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Compare Costa Rica weather in February, from dry and sunny Tamarindo to wetter Puerto Viejo, plus Jacó, Arenal and San José.
La Fortuna Weather in August
La Fortuna in August sees high daytime temperatures of 27°C (81°F) and nighttime lows of 22°C (72°F). As part of the rainy season, showers are frequent and often heavy. Budget around 217 mm (8.5 in) of rainfall for the month.
Rainfall in La Fortuna in August
La Fortuna is in the rainy season in August, with rain on around 20 days and an average of 217 mm (8.5 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in La Fortuna in August
In August, La Fortuna sees high temperatures, with highs of 27°C (81°F). Nights drop to around 22°C (72°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.If you prefer dry days with pleasant temperatures, February, March and April typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
La Fortuna Temperature in August
Min Temperature
22°C (72°F)
Max Temperature
27°C (81°F)
Chance of Rain
67%
Precipitation
217 mm (8.5 in)
Rainy days
20 days
La Fortuna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in La Fortuna - and find the best time to visit.
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in La Fortuna typically stay consistent throughout August, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows around 19°C (66°F).
Average temperatures in August
Daily Historical Precipitation
43-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather records for La Fortuna in August
Browse day-by-day weather records for La Fortuna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
La Fortuna historical weather extremes in August
According to our 30 years of weather records for La Fortuna, the following extremes were recorded between 1996 and 2026.
- La Fortuna recorded its highest August temperature of 33°C (91°F) on August 18, 1997.
- La Fortuna experienced its chilliest August day on August 26, 2020, reaching only 22°C (72°F).
- The lowest overnight temperature recorded in August was 14°C (57°F) (August 2, 2018).
Best Places in Costa Rica in August
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in La Fortuna in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!
What To Do in La Fortuna in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
La Fortuna 3-Day Forecast
More climate data for La Fortuna
See the full La Fortuna climate overview or explore weather in Costa Rica.
Popular in August
Where to go in August - average daytime high across popular destinations.
Tamarindo
31°C (88°F) Cahuita29°C (84°F) Santa Teresa29°C (84°F) Herradura28°C (82°F) Puerto Viejo de Talamanca29°C (84°F) Fortuna28°C (82°F) Jacó28°C (82°F) San José24°C (75°F) Bucket list
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