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El Castillo de La Fortuna Weather in August
El Castillo de La Fortuna in August sees high temperatures, with highs around 28°C (82°F) and overnight lows of 21°C (70°F). With the rainy season in full effect, expect around 254 mm (10 in) of rainfall and regular showers throughout the month.
Rainfall in El Castillo de La Fortuna in August
As part of the rainy season, El Castillo de La Fortuna sees around 23 days of rain in August, with an average of 254 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 El Castillo de La Fortuna in August
August in El Castillo de La Fortuna brings typical temperatures with highs around 28°C (82°F) and lows of 21°C (70°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 21°C (70°F), evenings stay pleasantly warm.
Sunshine in El Castillo de La Fortuna in August
The city usually sees around 171 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).If you prefer enjoying temperate temperatures and rain-free days, January, February and March 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.
El Castillo de La Fortuna Temperature in August
Min Temperature
21°C (70°F)
Max Temperature
28°C (82°F)
Chance of Rain
76%
Precipitation
254 mm (10 in)
Rainy days
23 days
Sunshine
171 hours *
Percentage Sunshine
*
* Data from: Puntarenas, Costa Rica (51 KM, 32 Miles).
El Castillo de La Fortuna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in El Castillo de La Fortuna - and find the best time to visit.
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in El Castillo de La 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 records for El Castillo de La Fortuna in August
Browse day-by-day weather records for El Castillo de La Fortuna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
El Castillo de La Fortuna historical weather extremes in August
Based on 30 years of weather observations (1996-2026), these are the most extreme conditions recorded in El Castillo de La Fortuna.
- The warmest day in August was on August 23, 2019, with a maximum of 34°C (93°F).
- The coldest August day was on August 26, 2020, with a maximum of 22°C (72°F).
- El Castillo de La Fortuna registered its coldest August night on August 2, 2018, with temperatures dropping to 14°C (57°F).
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 El Castillo de La Fortuna in August
Warm but pleasant conditions in El Castillo de La Fortuna in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in El Castillo de La Fortuna in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
El Castillo de La Fortuna 3-Day Forecast
More climate data for El Castillo de La Fortuna
See the full El Castillo de 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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