Hermosillo Weather in August

The climate in Hermosillo during August can be summarized as very hot and a little damp.

August is in the summer in Hermosillo and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a hot 38°C (100°F), whilst at night 25°C (76°F) is normal.

On average August is the wettest month of the year in Hermosillo with around 88mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.5 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 Hermosillo in August 2025.