San Carlos Weather in September

The climate in San Carlos during September can be summarized as hot, humid and very wet.

September is in the fall / autumn in San Carlos and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 22°C (72°F) is normal.

On average September is the wettest month of the year in San Carlos with around 300mm 11.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.8 hours of sunshine per day.

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 Carlos in September 2024.