Granollers Weather & Climate: Best Time to Visit

The climate in Granollers is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in August, the warmest time of the year, to a moderate 13°C (55°F) during cooler months like January.

At night, you can expect temperatures ranging from 19°C (66°F) in August to around 4°C (39°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Granollers receives mid-range precipitation levels, with 751 mm (30 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives high rainfall, averaging 102 mm (4 in) of precipitation, recorded across 11 rainy days. In contrast, the driest month July brings less rainfall, with 43 mm (1.7 in) over 6 rainy days. For more details, please visit our Granollers Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Granollers. While July receives considerable daily sunshine with up to 10.4 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.6 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 high throughout the year in Granollers.

The city experiences its highest humidity in September, reaching 74%. In July, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year