Ciudad Valles Weather in September

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

September is in the fall / autumn in Ciudad Valles and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 22°C (71°F) is normal.

On average September is the wettest month of the year in Ciudad Valles with around 399mm 15.7 inches of rain making it a very wet time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.

On the flip side this corresponds to an average of 6 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 Ciudad Valles in September 2025.