Ciudad Constitución Weather in September

The climate in Ciudad Constitución during September can be summarized as hot, humid and reasonably dry.

September is in the fall / autumn in Ciudad Constitución and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (93°F), whilst at night 21°C (70°F) is normal.

On average September is the wettest month of the year in Ciudad Constitución with around 36mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.6 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 Constitución in September 2025.