La Fortuna is Costa Rica's adventure capital, a small town in the northern highlands where the cone-shaped Arenal Volcano dominates the skyline from every angle. The town serves as a gateway to rainforest canopy walks, thundering waterfalls, volcanic hot springs heated by underground geothermal activity, and wildlife encounters with sloths, toucans, and howler monkeys. Between adrenaline-charged days of zip-lining and whitewater rafting, you can slow down with a casado at a family-run soda, take a chocolate and coffee farm tour, or soak in mineral-rich thermal pools while the volcano watches over you.
The best time to visit La Fortuna is late November through late April, when dry skies give you the clearest volcano views, the driest trails, and the most reliable conditions for outdoor adventures. December through February is the prime window: rain is virtually nonexistent, humidity stays low, and the landscape is lush from the recently ended wet season. March is the single busiest month for tourism, so if thinner crowds matter more than bone-dry weather, aim for December or January instead. Late April still falls within the ideal window, though afternoon showers begin to appear. For budget travelers willing to gamble on rain, June and July offer lower accommodation prices while still delivering warm, functional adventure days between showers.
Spring in La Fortuna, Costa Rica
March kicks off with some of the driest, hottest weather La Fortuna sees all year, and the trails around Arenal Volcano National Park are in superb condition. Highs average 95.2°F (35.1°C), so mornings are the time to tackle the 500-step descent to La Fortuna Waterfall or the hanging bridges at Mistico Park, where you can spot sloths and toucans from the canopy-level walkways. March is also the busiest month for tourism, so book your hot springs visits and zip-line tours in advance to avoid sellouts.
By mid-April, heat reaches its peak for the year, with highs climbing to 97.1°F (36.2°C) and lows holding near 72.4°F (22.4°C). The air feels thick on windless afternoons, but the volcanic hot springs are surprisingly refreshing at night when temperatures cool. Holy Week, which typically falls in late March or April, brings closures at many shops and offices from Thursday through Sunday, though tourist-facing businesses stay open. It's a good time to join a chocolate and coffee farm tour in the cooler early hours before the heat sets in.
May marks the shift into green season. Rain chances jump to about 26%, afternoon showers become more common, and humidity climbs. Lows stay comfortable at 72.1°F (22.3°C), and the landscape turns even more vivid green. Crowd levels drop significantly, and accommodations become easier to find. Pack a light rain jacket and water shoes if you plan to go whitewater rafting on the rivers that swell with the early rains.
Summer in La Fortuna, Costa Rica
Summer is La Fortuna's green season in full swing, and the rainforest earns its name. Afternoon storms roll through regularly, with rain chances ranging from 28% to 36% across these months. Mornings, however, frequently dawn clear and calm, giving you a reliable window to hike the 1968 lava trails at Arenal Volcano National Park or take a wildlife boat safari through the Caño Negro Wildlife Refuge, where monkeys, caimans, and rare birds are easier to spot along the swollen river channels.
Highs average 91.1°F (32.8°C) and lows settle near 73.4°F (23°C), keeping nights warm and muggy. Humidity sits in the 60-68% range, so lightweight, moisture-wicking clothing is your best friend. The upside of all this moisture: waterfalls are at their most dramatic, the forest canopy is impossibly lush, and you'll share the hanging bridges and zip-line cables with far fewer visitors. Tourism slows considerably, making this the time to score lower rates on lodges and guided tours.
Late July coincides with the Annexation of Nicoya, a national holiday that brings parades and celebrations across Costa Rica. In La Fortuna, community gatherings and live music add a festive layer to the town's small-town atmosphere. Plan outdoor adventures for the morning, then let the afternoon rain be your excuse to soak in a thermal pool or explore local restaurants serving hearty olla de carne and fresh tropical fruit smoothies.
Fall in La Fortuna, Costa Rica
Fall is La Fortuna's quietest and wettest stretch. September sees rain on roughly half of all days, making it the wettest month, and trails through the national park can turn muddy and slippery. Clouds tend to wrap Arenal Volcano for much of the day, so clear summit views are uncommon. If you visit during mid-September, you'll catch Costa Rica's Independence Day celebrations: school parades, handmade paper lanterns called faroles, and traditional dances wind through town on the evening of September 14th and continue the next day.
Highs average a comfortable 89°F (31.7°C) with lows near 71.9°F (22.2°C), so the heat is less intense than the dry season months. Humidity, on the other hand, peaks above 70%, and the air feels heavy, especially in the afternoons before the rain breaks. October remains very wet at 46% rain frequency, though the showers start to ease as November approaches. This is the slowest tourism period, and lodging prices reflect it: you'll find the most affordable rates of the year.
By November, conditions begin to improve noticeably. Rain frequency drops to about 16%, skies start to clear, and the forest is at peak lushness from months of steady moisture. Late November marks the start of the ideal weather window, and early visitors in the last week of the month get the benefit of green-season pricing with increasingly dry-season weather. Bring waterproof hiking boots and a packable rain shell, and lean into activities that benefit from the rain, like canyoning down swollen waterfalls with outfitters in the Arenal area.
Winter in La Fortuna, Costa Rica
Winter is when La Fortuna is at its best. The dry season arrives in full force: January and February see virtually 0% chance of significant rain, humidity drops into the low 40s, and the skies open up for some of the year's clearest views of Arenal Volcano's iconic cone. Highs average 92.4°F (33.6°C) while lows dip to 69.8°F (21°C), creating warm days and pleasantly cool evenings, the perfect contrast for a post-hike soak in one of the many volcanic hot springs scattered along the road between town and the national park.
December brings festive energy to La Fortuna's central park, which lights up with holiday decorations and hosts community celebrations with fireworks, live music, and food vendors. Costa Ricans celebrate most enthusiastically on the evenings of December 24th and 31st, and the town fills with both local families and international visitors. This is the busiest tourism period alongside February and March, so advance booking for popular tours like zip-lining, the waterfall hike, and Mistico Hanging Bridges is essential.
January's moderate winds, the strongest of the year, help keep the heat manageable and make mornings especially crisp for early volcano hikes or a float down the Peñas Blancas River to spot wildlife. February remains bone-dry and is one of the peak months for visitors. The Maleku Indigenous Reserve, about an hour north, offers cultural tours where you can learn about one of Costa Rica's Indigenous communities and their deep connection to the Arenal region and Río Celeste. Pack sunscreen, a wide-brimmed hat, and lightweight layers for evenings when the temperature dips below 70°F (21°C).
At a Glance
Monthly weather, visitor crowds, air quality, holidays, and daylight hours to help you plan your trip.
Travel Tips & Safety for La Fortuna, Costa Rica
Most visitors fly into Juan Santamaría International Airport in San José, which is roughly three hours from La Fortuna by road. Renting a car gives you the most flexibility, as many attractions and hot springs resorts sit along the highway between town and the volcano. Shared shuttles and private transfers are reliable alternatives, and most adventure tour operators include hotel pickup in their packages.
Tap water in La Fortuna is safe to drink, which is a genuine rarity in Central America. At small family-run restaurants called sodas, you can eat well on a budget; try a casado for lunch and gallo pinto for breakfast to get the full local experience. Tipping 10% is customary at sit-down restaurants, though some add a service charge automatically.
La Fortuna is one of the safer towns in Costa Rica, but standard precautions apply: keep valuables out of sight in parked cars, avoid the central park after dark when it's poorly lit, and watch your belongings in crowded tourist areas. Costa Rica is known for occasional pickpocketing in tourist zones, so use a money belt or zippered bag for important documents.