San Antonio weather in September (Heredia, Costa Rica)
How is the weather in San Antonio in September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.
In September, San Antonio typically experiences high temperatures and heavy rainfall. Throughout the daytime, temperatures often hover around 25°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 17°C.
San Antonio in September falls under the rainy season with heavy rainfall, averaging around 458 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 24 days of the month will see rainfall.
The area enjoys a balanced 149 hours of sunlight. Ensuring it's neither too overcast nor too sunny.
If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit San Antonio. January, February, March and April generally stand out with the best circumstances. While May, June, July, August, September, October and November tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized San Antonio climate page with graphs.
San Antonio, monthly averages in September
Min Temperature
17°C
Max Temperature
25°C
Chance of Rain
80%
Precipitation
458 mm
Rainy days
24 days
Humidity
85% *
Sunshine
149 hours *
Percentage Sunshine
*
Where to go in Costa Rica in September
Find out more about the weather in Costa Rica in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in San Antonio in September?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
This site provides you with all the information you need about the climate in San Antonio.
Our site offers climate and forecast data for every country in the world. Are you going to Costa Rica? On this website you can find 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.
