La Fortuna in May (2026): Green Season Begins, Lower Prices & Fewer Crowds

⭐ Best May window: May 5 to 31. The Labour Day weekend around May 1 brings a short burst of domestic travel; after that the town settles into its quietest, best-value stretch since the previous autumn, with the rain still building rather than at full green-season strength.

💰 Average May hotel prices (La Fortuna town, mid-range):
Whole month: ~$100–150/night, with the Labour Day weekend around May 1 running a little firmer
Rough mid-range estimates; rates vary by property and booking lead time.

May is the classic shoulder-month recommendation, and in our view it deserves the reputation. The dry season has just ended, so the rainforest is drinking after months of low rainfall and turns a green you simply do not see in March. The waterfall, which runs politely in April, starts to sound like a waterfall again. And the money is a different conversation entirely: rooms that cost $130 to $180 in April sit closer to $100 to $150 now, with far more of them available.

We'd book May if value and scenery matter more than a guaranteed volcano photograph. The tradeoff is that Arenal hides more often, and that afternoons are no longer dependable. What typically happens is a bright, usable morning followed by cloud building through midday and rain arriving somewhere between early and late afternoon, which is a pattern you can plan around rather than a washout. Our La Fortuna Waterfall guide and Arenal Volcano hike guide cover the two headline experiences that shift most between seasons.

Temperature and Humidity

Temperature is not what changes in May. Days run around 30°C (86°F) and nights settle to roughly 21°C (71°F), essentially the same numbers you get in January or October. What changes is how it feels. Humidity climbs as the rains return, so the same 30°C sits heavier than it does in the dry months, particularly on a steep trail or the waterfall staircase. Pack the same clothes you would any month here, but bring more of them, because things dry slowly once the air is saturated. The UV stays very high whether or not the sun is out.

Rain Pattern

May brings roughly 180mm of rain, up from about 70mm in April but still only half of what June delivers and well under half of October's 375mm. Just as important as the total is the shape of it. Early green-season rain in La Fortuna is typically convective: the morning is clear or lightly clouded, heat builds through the middle of the day, and the sky opens in the afternoon for an hour or two before easing. That is a very different animal from the long, grey, all-day systems of September and October. Our take: treat May afternoons as unreliable rather than lost, and plan the day accordingly.

Volcano Visibility and Trail Conditions

Arenal is good rather than excellent this month, about a 7 out of 10. The cone is often clear at sunrise and through the first hours of the day, but the cloud cap builds earlier and sits longer than it does in the dry season, so a mid-morning start that would have been fine in February can already be too late in May. On the ground, trails are in decent shape early in the month and get progressively softer as the rains accumulate. The lava field and hanging bridges circuits stay walkable throughout; ATV and horseback routes are the first to churn up. The biggest difference from April is underfoot on the waterfall staircase, which goes from bone dry to genuinely slick after a shower.

This is where May earns its recommendation. The month splits roughly into a short holiday blip and a long quiet stretch.

• May 1 (Labour Day): a national public holiday, and Costa Ricans travel for it. Expect a busier long weekend in town, fuller restaurants and firmer hotel rates for a few nights, then a sharp drop.
• May 2 to 20 (the sweet spot): the quietest, best-value stretch of the first half of the year. International arrivals have dropped off after Easter, domestic travel is back to normal, and the rain has not yet reached full strength. Tours run with small groups and same-day availability is common.
• May 21 to 31 (green season settling in): equally quiet, with rain becoming more consistent as the month closes and the pattern edges toward June's heavier totals.

Prices move with the crowds. Mid-range hotels in La Fortuna town come down to roughly $100 to $150 a night, against $130 to $180 through most of April and $130 to $200 in January. Tours discount less than accommodation does, but availability improves enormously, which is worth real money in a different way: you can decide the night before whether tomorrow looks like a waterfall day or a hot springs day. We'd give this the edge for anyone who dislikes booking a rigid itinerary months ahead.

If you want more certainty about seeing the volcano and can absorb the cost, our April guide covers the last of the dry season. If you want to push value further and accept real rain, the June guide covers the next step down the calendar.

Arenal is the single most weather-dependent sight in the region, and May is where the odds start to shift against you. Through the dry months a clear cone is the default; from May onward it becomes something you have to work for. We would put the month at about a 7 out of 10, well ahead of the September and October low point but a clear step below April.

The daily pattern is the thing to plan around. The cone is most often visible from around sunrise through mid-morning, before daytime heating drives cloud up the flanks. In dry season that window stretches comfortably into late morning; in May it can close by 9 or 10 AM. Skies frequently clear again briefly near sunset once the afternoon rain has passed, which is an underrated second chance. We'd book this if you can give the volcano two or even three mornings rather than one, because a single attempt in May is genuinely a coin toss.

The best vantage points do not change with the season: Mirador El Silencio and the 1968 lava-flow trails on the western flank look straight up at the cone, and the open stretches of the hanging bridges circuits give you canopy and volcano together. Remember that Arenal has been in a resting phase since 2010, so there is no visible lava at night in May or any other month; what you are here for is the shape of the mountain. Our Arenal Volcano hike guide compares the trails and viewpoints in detail, and the hanging bridges guide covers the circuits with the widest open views.

Around 180mm across the month, which sounds like a lot next to April's 70mm and reads very differently once you understand the distribution. May is not a wet month by La Fortuna standards; it is the first month of the wet half of the year, and the difference matters. June brings 300mm, July 345mm and October 375mm. May sits below all of them, and it sits there with a rain pattern that is far more predictable than the totals suggest.

Most guests find that the rain runs to a schedule they can work with. Mornings are usually bright or lightly clouded, cloud builds through late morning, and the shower arrives somewhere in the afternoon, often heavy for an hour and then done. Full-day grey washouts do happen, but they are the exception in May rather than the rule they become in September. Tours cancel very rarely; what they do instead is get wet, which is a different problem and one a poncho solves.

Two practical consequences. First, front-load hard. Anything that depends on views or dry footing, the volcano hike, the bridges, the waterfall, ziplines, ATV, belongs in the morning. Anything rain-proof, hot springs, coffee tours, cooking classes, night walks, belongs in the afternoon and evening, where a downpour costs you nothing. Second, pack for wet: a proper rain jacket rather than a token shell, quick-dry clothing, a dry bag for cameras, and shoes with grip you actually trust on the 500-step waterfall staircase.

The single most useful thing to understand about La Fortuna's climate is that temperature barely moves all year, while rainfall swings roughly fivefold. Daytime highs sit between 29 and 32°C every month and nights hover around 21°C, so you pack the same clothes in January as in July. What actually changes your trip is how much rain falls, and when.

Full Month-by-Month Figures

What the Numbers Actually Mean

Three things stand out. First, March and April are the driest months by a wide margin, at roughly 70 to 75mm, which is why the dry season peaks then rather than in December. Second, October is the wettest at around 375mm, five times March, with September close behind. Third, the shoulder months do most of the work for value travelers: May and November sit between the extremes, offering greener rainforest and lower prices without the full weight of the wet season.

The temperature column is almost a flat line, and that is the point. Most people don't realize that choosing when to visit La Fortuna is a decision about rain and cloud, not about heat. If you want the volcano visible and the trails firm, come in the dry season. If you want thundering waterfalls, fuller rivers, and lower rates, the green season delivers, and you accept afternoon rain as the price.

ℹ️ Figures are rounded monthly averages from a single climate dataset and are indicative rather than exact. Published figures for La Fortuna vary noticeably between sources and weather stations, particularly for rainfall totals and rain-day counts, because the town sits on the Caribbean slope where conditions shift over short distances. Treat these as the shape of the year rather than a forecast.

Beyond the headline tours, May's green, freshly watered landscape suits the smaller things that fill out a La Fortuna trip:

• El Salto rope swing: a free local river swimming hole just outside town, with more water in it now than at any point since last year's rains.
• Free hot springs at the Tabacón river bridge, where thermal water runs under the road; a perfect answer to an afternoon shower, though the rocks are slicker in green season.
• Lake Arenal viewpoints and the dam road, an easy self-drive that keeps working when the weather turns, since you can wait out a shower in the car.
• Butterfly gardens and frog ponds, low-effort wildlife stops that come alive as the rains return and double as rain-proof fillers.
• La Fortuna central park and church, at its most pleasant in the calm evening hour after the rain passes.
• Birdwatching around the Peñas Blancas river valley, busy in May as the wet season kicks off nesting activity.
• Local sodas and the Friday farmers market, genuinely good value in a month when the town is quiet and prices are soft.

May is a light month on the festival calendar, with one date that matters.

• Labour Day (May 1): a national public holiday. Costa Ricans travel for the long weekend, so La Fortuna hotels and restaurants fill for a few nights and rates firm up briefly. Government offices and some banks close. Tours run normally.
• Start of green season: not an event, but the shift that shapes the month. Some hotels and operators publish green-season rates from May 1, which is why the price drop from April can feel abrupt rather than gradual.
• Rainy-season maintenance: a handful of smaller operators and hotels use the quiet start of green season for refurbishment. It rarely affects the major tours, but it is worth confirming a small property is open before you commit.

None of this should change your plans. Just avoid arriving on April 30 expecting the quietest version of La Fortuna, and give the first few days of the month a little more booking lead time than the rest.

• Start early, and mean it. The volcano's cloud cap builds sooner in May than in dry season, so a 7 AM start is worth far more than an 9 AM one.
• Book views in the morning, water in the afternoon. Volcano hike, bridges, waterfall and ziplines before noon; hot springs, coffee tours and cooking classes after.
• Give the volcano more than one attempt. A single morning in May is close to a coin toss. Two or three attempts turns a good view into a likely one.
• Bring real rain gear. A proper waterproof jacket, quick-dry clothes, a dry bag and a spare pair of shoes. A token windbreaker is not enough once green season starts.
• Take the waterfall staircase seriously. Around 500 steps down and back, and noticeably slicker after a shower than at any point in April. Grippy footwear matters more this month.
• Book less far ahead, decide closer in. Availability is good in May, so you can look at tomorrow's sky before committing. That flexibility is one of the month's real advantages.
• Use the sunset window. Skies often clear briefly after the afternoon rain passes, which is an easy second chance at the cone from town or your hotel.
• Expect humidity, not heat. The 30°C (86°F) high is unchanged from April, but the wetter air makes it feel heavier and slows drying, so plan laundry and layers accordingly.
• Keep Rio Celeste flexible. Heavy rain upstream clouds the blue water, so it is the one trip worth moving to a better-looking day.
• Visiting at a different time of year? Our La Fortuna in April guide covers the last of the dry season and better volcano odds, and our La Fortuna in June guide covers the next step into green season with heavier rain and lower prices.