San Isidro Precipitation: Average Monthly Rainfall and Snowfall

This graph shows the average amount of rainfall per month in San Isidro (San José). The numbers are calculated over a 30-year period to provide a reliable average.

• A lot of rain (rainy season) falls in the months: January, February, March, April, May, June, July, August, September, October, November and December.
• On average, October is the wettest month with 737 mm of precipitation.
• On average, February is the driest month with 104 mm of precipitation.
• The average amount of annual precipitation is 5207 mm.