Fortuna Weather in August
Fortuna in August averages 28°C (82°F) during the day and 21°C (70°F) at night. August is part of the rainy season, so frequent rainfall is typical.
Rainfall in Fortuna in August
Fortuna is in the rainy season in August, with rain on around 22 days and an average of 263 mm (10 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Fortuna in August
Daytime temperatures in Fortuna reach 28°C (82°F) in August, dropping to 21°C (70°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights are mild at around 21°C (70°F), which is comfortable for most people.
Sunshine in Fortuna in August
The area experiences a moderate amount of sunshine, with approximately 171 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.Our weather planner can help you find worldwide destinations with pleasant weather during this period. February and March typically offer the best weather for Fortuna.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Costa Rica, check out our Fortuna's climate page.
Fortuna Temperature in August
Min Temperature
21°C (70°F)
Max Temperature
28°C (82°F)
Chance of Rain
74%
Precipitation
263 mm (10 in)
Rainy days
22 days
Sunshine
171 hours *
Percentage Sunshine
*
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Fortuna typically stay consistent throughout August, with daily highs averaging around 28°C (82°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 for Fortuna in August
Browse day-by-day weather records for Fortuna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Fortuna historical weather extremes in August
Based on weather observations in Fortuna between 1996 and 2025, these are the recorded extremes during August.
- On August 23, 2019, temperatures climbed to 34°C (93°F), marking the warmest August day on record.
- 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
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tolerable
unpleasant
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What to Wear in Fortuna in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Fortuna in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Costa Rica, check out our Fortuna's climate page.
See the full Fortuna climate overview or explore weather in Costa Rica.
