San José weather in September
Are you planning a trip to San José in September and wondering what kind of weather to expect? This page has all the details you need.
What is the weather like in San José in September?
San José is a region in Costa Rica. September in San José generally has warm temperatures, with heavy precipitation.
The average maximum temperatures are warm and range from 23°C in La Ese to 26°C in Colón. Nighttime temperatures generally drop to 18°C in Colón and 16°C in La Ese.
In September, precipitation varies across different areas. From heavy rainfall in Heredia with an average of 426 mm to heavy rainfall in San Isidro with 655 mm. San José enjoys a balanced 149 hours of sunlight. Ensuring it's neither too overcast nor too sunny.
For a closer look at September's conditions in San José, see the map below. For a more detailed look at San José's yearly weather, check out our San José climate page.
Where to go in San José in September
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Popular destinations in San José
What is the weather like in September for the 5 most popular destinations in San José?
Average weather in San José
In September San José generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 16°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Average weather in Heredia
In September Heredia generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 17°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Average weather in Santa Ana
In September Santa Ana generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 17°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Average weather in San Gerardo de Dota
In September San Gerardo de Dota generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 16°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Average weather in San Isidro
In September San Isidro generally has high temperatures with maximum daytime temperatures around 24°C, minimum nighttime temperatures around 17°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Is your destination not in the list? Have a look at other destinations in San José, in Costa Rica.
Is September the best time to visit San José?
Given the typically poor weather conditions in San José, September may not be the ideal time to visit San José.
Generally speaking, the best visiting conditions can be found in January, February and March offering mostly perfect weather in San José. On the other hand, the weather in May, June, July, August, September, October and November tend to be poor.
Interested in more climate information?
We have much more information about the climate in San José.
Interested in the weather conditions in a specific month? Select the month below.
Weather and climate has detailed information for every country in the world. Are you going to Costa Rica? Get detailed historical weather averages for many cities in Costa Rica.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.