Porrentruy Weather & Climate: Best Time to Visit

Visitors to Porrentruy can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 25°C (77°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 5°C (41°F).

At night, temperatures range from around 14°C (57°F) in July to -2°C (28°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Porrentruy is known for its substantial rain/snowfall, with annual precipitation reaching 1443 mm (57 in). Despite minor fluctuations, Porrentruy enjoys fairly consistent precipitation throughout the year. In May, you can expect around 148 mm (5.8 in) of precipitation, while in February, Porrentruy receives about 99 mm (3.9 in). For more details, please visit our Porrentruy Precipitation page.

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

The average number of days each month with precipitation

Porrentruy can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 7.9 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Porrentruy.

The city experiences its highest humidity in November, reaching 82%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year