San Rafael Abajo Weather in September
What's the weather like in San Rafael Abajo (San José) in September 2025?
The climate in San Rafael Abajo during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in San Rafael Abajo and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 20°C (68°F) is normal.
| Daytime temperature | 26.9°C 80.4°F |
|---|---|
| Nightly temperature | 19.9°C 67.8°F |
| Average temperature | 23.4°C 74.1°F |
| Daily sunshine | 5.9 hrs |
| Avg rainfall | 359 mm 14.1 ins |
| Rainy days | 23 days |
| Sea temperature | 28.6°C 83.5°F |
| Humidity | 86% |
| Windspeed | 9.7kph 6 mph |
On average September is the 2nd wettest month of the year in San Rafael Abajo with around 359mm 14.1 inches of rain making it a very wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.9 hours of sunshine per day.
September temperatures in San Rafael Abajo
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Rafael Abajo in September 2025.
Other monthly averages
Best places to visit in September
San Rafael Abajo weather stats
| Hottest month: | April | 29°C 84.2°F |
|---|---|---|
| Driest month: | January | 0mm 0ins |
| Sunniest month: | February | 8.5hrs |
| Coldest month: | October | 26.6°C 79.9°F |
| Wettest month: | October | 392mm 15.4ins |
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