Average monthly rainy days in Ostional
The number of days each month with rain, snow and hail in Ostional (Guanacaste), Costa Rica.
- Most rainy days are in May, June, July, August, September and October.
- On average, September is the most rainy with 23 days of rain/snow.
- On average, March is the driest month with 5 rainy days.
- The average annual number of rainy days is 173.
Forecast for Ostional
Sat May 04
31°C | 24°C
SW 
11 km/h
11 km/h3.6 mm
partly cloudy and chance of rain
Sun May 05
31°C | 24°C
S 11 km/h
11 km/h4 mm
partly cloudy and chance of rain
Mon May 06
30°C | 23°C
W 14 km/h
14 km/h2.1 mm
partly cloudy and chance of rain
