La Fortuna weather in August
August in La Fortuna: hot, soaked, with clean air — a fair time to visit.
#10 of 12 months in La Fortuna · #521 of 604 destinations to visit in August · comfort 55/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
La Fortuna climate normals — August
| Daytime high | 27°C / 81°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 71°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 312 mm / 12.3 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 92% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 7.9 h/day | |
| Daylight | 12.5 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 19 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is La Fortuna?
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La Fortuna in August — FAQ
- Is August a good time to visit La Fortuna?
- August in La Fortuna: hot, soaked, with clean air — a fair time to visit. It ranks #10 of 12 months for La Fortuna on SeasonMap's comfort score (55/100).
- What is the weather like in La Fortuna in August?
- In August, La Fortuna averages a daily high of 27.2°C and a low of 21.4°C, with about 311.5 mm of rain over roughly 28.2 rainy days.
- What is the air quality in La Fortuna in August?
- La Fortuna has a mean US Air Quality Index of about 19 in August.