La Fortuna weather in December
December in La Fortuna: hot, rainy, with clean air — a great time to visit.
#5 of 12 months in La Fortuna · #266 of 604 destinations to visit in December · comfort 72/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
La Fortuna climate normals — December
| Daytime high | 26°C / 78°F | 🥵 hot |
|---|---|---|
| Nighttime low | 20°C / 68°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 142 mm / 5.6 in | 🌧 rainy |
| Rainy days | 19 days | |
| Humidity | 90% | 💦 very humid |
| Dew point | 21°C / 69°F | |
| Sunshine | 10 h/day | |
| Daylight | 11.5 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 20 | 🍃 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 December — FAQ
- Is December a good time to visit La Fortuna?
- December in La Fortuna: hot, rainy, with clean air — a great time to visit. It ranks #5 of 12 months for La Fortuna on SeasonMap's comfort score (72/100).
- What is the weather like in La Fortuna in December?
- In December, La Fortuna averages a daily high of 25.7°C and a low of 20.1°C, with about 142 mm of rain over roughly 19 rainy days.
- What is the air quality in La Fortuna in December?
- La Fortuna has a mean US Air Quality Index of about 20 in December.