Hermosillo Weather & Climate: Best Time to Visit

Visitors to Hermosillo can expect significant temperature changes throughout the year. Average daytime temperatures reach a very hot 40°C (104°F) in June. In December, the coolest month of the year, temperatures drop to a comfortable 25°C (77°F).

At night, temperatures range from around 27°C (81°F) in June to 9°C (48°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

Hermosillo typically sees modest rainfall throughout the year, with an average annual precipitation of 273 mm (11 in). Hermosillo can be quite wet during August, receiving approximately 60 mm (2.4 in) of precipitation over 8 rainy days.

In contrast, during the driest month (May), you will experience much drier conditions, with 0.7 mm (0.03 in) of precipitation spread across 0 rainy days days. For more details, please visit our Hermosillo Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Hermosillo can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.0 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 6.0 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is moderate throughout the year in Hermosillo.

The city experiences its highest humidity in August, reaching 54%. In May, the humidity drops to its lowest level at 31%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year