San Antonio Climate by Month
The weather in San Antonio is characterized by a steady average temperature throughout the year.
It also experiences much rainfall throughout the year.
Now, let’s explore all the climate details to give you a full picture.
Average day and night temperature
In San Antonio temperatures are generally consistent throughout the year. Average daytime temperatures reach a comfortable 27°C in April. In January, the coolest month of the year, temperatures drop to a comfortable 25°C. At night, expect cooler temperatures, averaging 16°C during this month.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
San Antonio experiences significant rainfall throughout the year, averaging 3059 mm of precipitation annually. San Antonio can be quite wet during October, receiving approximately 467 mm of precipitation over 23 rainy days. In contrast March, experiences much drier conditions, with 43 mm of rainfall, spread across 8 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
San Antonio can be enjoyed more throughout the sunniest month of March under a blue sky, with approximately 9.5 hours of sunshine daily. In contrast, the city experiences much darker days in June, with only 4.8 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is moderate throughout the year in San Antonio.
Relative humidity over the year
The best time of year to visit San Antonio in Costa Rica
During the months of January, February, May, June, July, August, September, October, November and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
April has an average maximum temperature of 27°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 25°C.
October tops the wettest month list with 467 mm of rainfall.
March is the driest month with 43 mm of precipitation.
March is the sunniest month with an average of 284 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.
