December brings the dry season back to Manuel Antonio, along with the return of humpback whales and the Christmas and New Year holiday peak. Here is what to expect and how to plan around the crowds.
What You Should Know
- December is the start of the dry season in Manuel Antonio: the rains fade, sunny days return, and the forest is still green from the wet months. It is one of the most rewarding months for weather and scenery.
- It is a month of two halves. Early-to-mid December is settling, sunny, and still reasonably priced; late December (roughly Dec 20 to Jan 5) is the Christmas and New Year holiday peak, the busiest and most expensive stretch of the year.
- Humpback whales return: the northern-hemisphere season generally begins around December, so whale watching becomes possible again after the autumn gap.
- The main tradeoff is the holiday surge. Book lodging, the national park, and tours far ahead for late December; early December is far easier on crowds and the wallet.
Manuel Antonio in December: The Honest Picture
⭐ Best December window: early-to-mid December (about Dec 1 to 18). The dry season is settling in, the forest is still green from the wet months, and prices and crowds are far below the late-month Christmas and New Year peak.
| Factor | December Rating |
|---|---|
| Weather | 8/10 — dry season returns, sunny |
| Crowds | 4/10 — holiday peak late month |
| Prices | 3/10 — rising to the holiday peak |
| Wildlife & National Park | 9/10 — lush early, active mornings |
| Snorkeling | 8/10 — improving toward dry-season clarity |
| Surf | 6/10 — smaller dry-season swell returning |
| Rain | 8/10 — mostly dry; occasional early showers |
| Families | 8/10 — good weather; holiday season for kids |
| Couples | 8/10 — sunny, festive, green |
💰 Average December hotel prices (Manuel Antonio/Quepos, mid-range):
Early December: ~$170/night · Christmas/New Year (Dec 20–Jan 5): ~$300+/night
Rough mid-range estimates; rates vary by property and booking lead time.
December is when the dry season returns to Manuel Antonio, and it arrives with the forest still green from the wet months. Sunny days come back, the rains fade, and the scenery is at a rare best-of-both-worlds peak: lush like the green season, bright like the dry. The catch is the calendar. Early-to-mid December is a wonderful, relatively quiet window; late December is the Christmas and New Year holiday peak, the busiest and priciest stretch of the entire year.
Visiting Manuel Antonio in December means choosing your half. Travel early in the month and you get sunny, green, uncrowded days at reasonable prices, plus the return of humpback whales. Travel over the holidays and you get the same great weather but with packed beaches, a national park at its daily cap, and peak rates that require booking months ahead.
We'd lean toward early-to-mid December for travelers who want dry-season weather, green scenery, and value without the holiday crush. The honest tradeoff is that late December is spectacular but demands planning and budget. This guide covers the weather week by week, how December compares to the rest of the year, the returning whales, the holiday peak, and the activities that shine this month.
Who December suits best:
- Scenery lovers: the forest is still green from the wet season while the sun returns, a rare combination.
- Early-month value seekers: the first two-plus weeks offer dry-season weather before holiday prices take hold.
- Holiday travelers: late December delivers a festive, sunny peak, if you book far ahead and accept peak prices.
- Budget or quiet-trip travelers over the holidays: less ideal. Christmas and New Year are the most crowded, expensive days of the year.
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Manuel Antonio Weather in December
| Metric | December |
|---|---|
| Avg High | 31°C (88°F) |
| Avg Low | 22°C (72°F) |
| Water Temp | 28–29°C (82–84°F) |
| Rain Days | ~9 (decreasing) |
| Humidity | Moderate |
| Wind | Low to moderate |
| Rain Level | Low (dry season returning) |
Temperature and Humidity
December is warm and increasingly dry, with daytime highs around 31°C (88°F) and overnight lows near 22°C (72°F), among the coolest nights of the year. Humidity drops from the wet-season months, so December feels fresher and more comfortable than the deep green season. Mornings are bright and pleasant; midday sun strengthens as the dry season settles in.
Rain Pattern
December is a drying-out month. Early December can still see the occasional afternoon shower as the wet season releases its grip, but rain becomes infrequent through the month, and by late December most days are fully dry, classic dry-season weather. Some years a brief cool front brings cloud or a passing shower, but extended rain is uncommon.
Sea and Outdoor Conditions
The Pacific stays warm at 28 to 29°C (82 to 84°F). Snorkeling visibility improves through December toward its dry-season best as river runoff fades, so it is a much better month for it than the autumn. Surf eases to the smaller dry-season swell, good for beginners. Trails firm up and dry out, making the hiking comfortable, and the forest stays green from the recent rains.
Manuel Antonio in December: Crowds and Prices
December's crowds and prices climb sharply toward the Christmas and New Year holiday at the end of the month.
- December 1 to 18 (settling dry season): Sunny, green, and still reasonably priced, with moderate crowds. One of the most pleasant and best-value windows of the dry season, before the holiday surge.
- December 19 to 24 (holiday build): Crowds and rates climb quickly as Christmas approaches and domestic and international travelers arrive. Book ahead.
- December 25 to January 1 (Christmas and New Year peak): The busiest, most expensive stretch of the year. Beaches are packed, the national park reaches its daily cap, hotels book out months ahead, and prices peak. Festive and lively, but plan far in advance.
Expect mid-range Manuel Antonio hotels to run around $170 per night in early December, climbing to $300 or more during the Christmas and New Year peak, with beachfront and boutique properties well above that. Tour prices stay broadly stable year-round; the holiday premium and the park's daily cap show up in availability, so reserve everything early for late-December travel.
Is December a Good Time to Visit Manuel Antonio?
Yes, and early December especially so. The dry season returns with the forest still green, the weather is excellent, and whales come back, all before the holiday crowds. The one caveat is the late-December holiday peak, which is spectacular but the most crowded and expensive window of the year.
December vs Other Months
| Month | Weather | Crowds | Prices | Overall |
|---|---|---|---|---|
| October | 6/10 — wettest; can be stormy | 8/10 — very quiet | 8/10 — lowest | Wettest month, but whales early and great value |
| November | 7/10 — rains easing late month | 7/10 — quiet, rising late | 7/10 — low, rising late | Green-to-dry transition; great late-month value |
| December | 8/10 — dry season returns | 4/10 — holiday peak late month | 3/10 — rising to holiday peak | Dry-season start; book holidays far ahead |
| January | 10/10 — driest, sunniest | 3/10 — busiest month | 2/10 — peak rates | Peak conditions at peak cost |
| February | 10/10 — dry, sunny, low humidity | 4/10 — busy but post-holiday | 3/10 — high | Best all-around month for most travelers |
December vs January
Both are dry-season months with excellent weather. The difference is timing and scenery: early December is greener, fresher, and cheaper than January, and quieter outside the holidays, while January is drier and sunnier but at the year's peak crowds and prices. We'd give early December the edge for value and green scenery, and January the edge for the most reliable sun. Our Manuel Antonio in January guide covers that month in detail.
So, When Should You Visit?
For dry-season weather with green scenery and value, early-to-mid December is hard to beat. For a festive holiday peak with guaranteed sun, late December delivers, at the year's highest cost. For peak dry weather afterward, January and February are the sunniest. Our Manuel Antonio in November guide covers the value-packed transition month just before.
Dry Season Returns and the Whales Come Back
December's draw is the dry season returning to a still-green forest, plus the comeback of humpback whales after the autumn gap. For weather and scenery together, it is one of the best months of the year.
Green Forest, Returning Sun
December catches the forest still lush from the wet season just as the sun comes back and the trails dry out. Rivers and waterfalls still run strong, wildlife is active, and a dawn national park tour is excellent. Birdwatching is strong, and snorkeling visibility improves steadily as the runoff fades, recovering toward its dry-season best.
Humpback Whales Return
The northern-hemisphere humpback season generally begins around December on Costa Rica's Pacific, reopening whale watching after the November gap. Sightings build through the winter into the new year. The prime base is Marino Ballena National Park near Uvita, about an hour south of Manuel Antonio, where dedicated whale-watching trips run; some sailing tours near Quepos may also encounter them as the season starts.
Early-Month Value
For the first two-plus weeks of December, you get dry-season weather and green scenery at prices well below the holiday peak, with moderate crowds. We'd target early-to-mid December for the best balance of weather, scenery, and value in the entire dry season, before the Christmas surge arrives.
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The Holiday Peak: Christmas and New Year Crowds and Prices
December's one big planning factor is the Christmas and New Year holiday, which turns the back of the month into the busiest, most expensive window of the year.
What the Holiday Peak Looks Like
From roughly December 20 to January 5, Manuel Antonio fills up. Domestic and international travelers arrive together, the beaches are packed, the national park reaches its 600-person daily cap, restaurants run at capacity, and hotel rates hit their annual high. The atmosphere is festive and the weather is usually excellent, but it is the opposite of a quiet trip.
How to Handle It
If you are visiting over the holidays, book everything early: lodging months ahead, and your park ticket and any small-group tours as soon as your dates are set. The park is closed every Tuesday year-round, so factor that into a tight holiday schedule. If you would rather avoid the crush, travel in early-to-mid December for the same great weather at a fraction of the crowds and cost, or wait until late January. Our Manuel Antonio in January guide covers the post-holiday peak-dry-season month that follows.
The Best Activities in Manuel Antonio in December
Everything is open in December, with dry-season conditions returning and whales coming back. Reserve ahead for late-month holiday travel. The table below rates each activity for the month.
| Activity | December Rating | Best Time of Day | Notes |
|---|---|---|---|
| National Park Tour | 9/10 | Early morning | Green and active; reserve SINAC ticket early for the holidays |
| Snorkeling & Sailing | 8/10 | Morning or afternoon | Visibility improving; whales returning offshore |
| Birdwatching | 9/10 | Early morning | Active mornings; drier as the month goes on |
| Waterfall Tours (Nauyaca) | 8/10 | Morning | Strong water volume; trails firming up |
| Naranjo River Rafting | 9/10 | Morning | El Chorro canyon section returns around Dec 15 |
| Mangrove Tour | 8/10 | Morning | Year-round; wildlife active and accessible |
| Night Tour | 8/10 | Evening | Still active; drier evenings late month |
| Ziplining | 8/10 | Morning | Dry, firm platforms; reliable sun late month |
| ATV Tour | 8/10 | Morning | Trails drying out and firming up |
| Horseback Riding | 8/10 | Morning | Drier trails; comfortable conditions |
| Surf Lessons | 7/10 | Morning | Smaller dry-season swell; good for beginners |
| Chocolate Tour | 8/10 | Afternoon | Covered; handy for an early-month shower |
Best in December
The national park tour, birdwatching, and Naranjo rafting are all strong, with rafting regaining its El Chorro canyon section (cliff jumping) around mid-December. Snorkeling and sailing improve as the water clears, with whales returning offshore. The whole calendar is open and conditions are on the upswing.
Reliable in Any Weather
For any lingering early-month shower, the sheltered mangrove tour, the covered chocolate tour, and the evening night walk all run regardless of the weather.
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More December Activities Worth Knowing About
These December-friendly experiences do not have their own dedicated guides on this site yet, but all are well established and suited to the return of the dry season.
Manuel Antonio Beaches (Espadilla and Biesanz)
Playa Espadilla and the sheltered Biesanz Bay are warm, calm, and increasingly clear in December as the dry season settles in. Early-month mornings are quietest; over the holidays the main beach fills with visitors. Biesanz snorkeling improves through the month as the water clears.
Marino Ballena and Uvita Whale Watching
About an hour south of Manuel Antonio, Marino Ballena National Park near Uvita is the prime whale-watching base, and December reopens the window as the northern humpback season begins. A half-day boat trip becomes a worthwhile addition again, often combined with the Whale's Tail sandbar at low tide.
Quepos and Marina Pez Vela
The town of Quepos and its marina liven up in December, especially around the holidays, with sportfishing improving in the calmer dry-season seas. The marina's restaurants make a festive evening out, and the area has a celebratory feel late in the month.
Holiday Atmosphere
December brings a festive feel to the coast, with holiday decorations, busy beaches, and a celebratory mood around Christmas and New Year. For travelers who enjoy the energy of a peak season, late December is lively and sunny, just be ready for the crowds and prices that come with it.
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From Our Experience
What we consistently see is that early-to-mid December is one of the smartest times to visit: the dry season has arrived, the forest is still green from the rains, the whales are back, and prices and crowds are a fraction of what they become a week or two later. Travelers who can avoid the Christmas peak get the best of the month for far less.
Tips for Visiting Manuel Antonio in December
- Aim for early-to-mid December if you can: the first two-plus weeks offer dry-season weather, green scenery, and the return of whales at prices and crowd levels well below the late-month holiday peak.
- Book far ahead for the holidays: for travel from about December 20 to January 5, reserve lodging months in advance and your park ticket and tours as soon as your dates are set; it is the busiest week of the year.
- Reserve the SINAC park ticket once your dates are set: entry is capped at 600 visitors per day, it sells out over the holidays, and the park is closed every Tuesday.
- Snorkeling is on the upswing: visibility improves through December as runoff fades, so the back half of the month is better than the start for clear water.
- Whales are back: the northern humpback season generally begins in December, so a half-day trip toward Marino Ballena becomes worthwhile again.
- Pack a light layer for early-month showers and cool nights: December has the occasional lingering shower early on and the coolest nights of the year.
- Plan your transfer from San José around the morning, and holiday traffic: the roughly 3-hour drive is much busier over the holidays. Our San José to Manuel Antonio guide covers private transfers, shuttles, and the public bus.
- Came from November, or considering it? Our Manuel Antonio in November guide covers the green-to-dry transition with excellent late-month value before December.
- Heading into January? Our Manuel Antonio in January guide covers peak dry season after the holidays: the year's best weather and snorkeling visibility.
How We Put This Guide Together
The Costa Rica Day Trip team built this guide from seasonal weather patterns, national park access rules, the Costa Rican holiday calendar, whale-season timing, operator availability windows, and verified traveler review patterns across every major Manuel Antonio activity category. December is the start of the dry season and the holiday peak, so we focused on the factors that genuinely change with it: the returning sun and whales, the green-but-drying forest, and the Christmas and New Year surge. Ratings reflect documented seasonal conditions rather than a best-case picture. This guide was reviewed and updated in May 2026. Conditions and prices vary year to year, and the holiday weeks book out far in advance, so we recommend confirming tour availability and securing your national park ticket through SINAC well before your trip, especially for late-December travel. Every activity linked here has its own dedicated guide with operator comparisons and real review data.
Frequently Asked Questions
Is Manuel Antonio good in December?+
Yes, and early December especially. The dry season returns with the forest still green from the wet months, the weather is sunny and comfortable, snorkeling visibility improves, and humpback whales come back. The one caveat is the Christmas and New Year holiday peak in late December, which is festive and sunny but the busiest and most expensive window of the year. Early-to-mid December offers the same great weather with far fewer crowds.
What is the weather like in Manuel Antonio in December?+
December is warm and increasingly dry, with highs around 31°C (88°F) and lows near 22°C (72°F), some of the coolest nights of the year. Early December can see the occasional afternoon shower as the wet season ends, but rain becomes infrequent and most of the second half is fully dry. The Pacific stays warm at 28 to 29°C, and humidity is lower than the green-season months.
Can you see whales in Manuel Antonio in December?+
Yes, the season is reopening. The northern-hemisphere humpback season generally begins around December on Costa Rica's Pacific, after the autumn gap, and sightings build through the winter into the new year. The prime base is Marino Ballena National Park near Uvita, about an hour south, where dedicated whale-watching trips run. Some sailing tours near Quepos may also encounter whales as the season starts.
How busy is Manuel Antonio at Christmas and New Year?+
Very busy. From roughly December 20 to January 5, Manuel Antonio is at its annual peak: packed beaches, the national park at its 600-person daily cap, hotels booked out months ahead, and the highest prices of the year. The atmosphere is festive and the weather is usually excellent, but it is the opposite of a quiet trip. Book everything far in advance, or travel in early December to avoid the crush.
Is December expensive in Manuel Antonio?+
It depends on the week. Early December is reasonable, with mid-range hotels around $170 per night, while the Christmas and New Year peak (Dec 20 to Jan 5) climbs to $300 or more, the highest rates of the year. Tour prices stay broadly consistent year-round, so the holiday premium is in lodging and availability. Early-to-mid December offers the best value of the month by a wide margin.
What is the best week to visit Manuel Antonio in December?+
Early-to-mid December, roughly December 1 to 18. The dry season is settling in, the forest is still green from the wet months, whales are returning, and prices and crowds are far below the late-month holiday peak. If you want the festive holiday atmosphere, the Christmas and New Year week delivers it with great weather, but book months ahead and expect peak prices.
What activities are best in Manuel Antonio in December?+
The guided national park tour, birdwatching, and Naranjo River rafting are all strong, with rafting regaining its El Chorro canyon section around mid-December. Snorkeling and sailing improve as the water clears, with whales returning offshore. ATV, horseback, zipline, waterfall, mangrove, and night tours all run well as the trails dry out. Reserve ahead for late-December holiday travel.
Is December in the dry season in Manuel Antonio?+
December is the start of the dry season. The rains fade through the month, and by mid-to-late December most days are fully dry, classic dry-season weather, while the forest is still green from the recent wet season. Early December can still bring the occasional afternoon shower as the transition completes. The combination of green scenery and returning sun makes December one of the most scenic months of the year.
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