San Isidro Climate by Month
The weather in San Isidro is characterized by a steady average temperature throughout the year.
It is also known for its large amounts of rainfall.
Now, let’s break down all the climate details for a clearer picture.
Average day and night temperature
The climate in San Isidro remains fairly constant, offering comfortable temperatures throughout the year. Typically, daytime temperatures range from a comfortable 25°C in April to a comfortable 23°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 16°C, particularly during the colder months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
San Isidro is known for its substantial rainfall, with annual precipitation reaching 5207 mm. The climate in San Isidro shows significant variation throughout the year. Expect heavy rainfall in October, with an average of 737 mm of precipitation over 23 rainy days. In contrast, February offers drier and sunnier days, with around 104 mm of rainfall over 9 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, San Isidro serves as an ideal destination. Expect longer, more sun-filled days in January with an average of 9.0 hours of sunshine daily, and embrace the darker days in June, offering only 4.9 hours of daily sunlight.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in San Isidro.
Relative humidity over the year
The best time of year to visit San Isidro in Costa Rica
Other facts from our historical weather data:April has an average maximum temperature of 25°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 23°C.
October tops the wettest month list with 737 mm of rainfall.
February is the driest month with 104 mm of precipitation.
March is the sunniest month with an average of 270 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
