Gressoney-Saint-Jean Weather & Climate: Best Time to Visit

The climate in Gressoney-Saint-Jean is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a pleasant 18°C (64°F) in July, the warmest time of the year, to a very cold -2°C (28°F) during cooler months like January.

At night, you can expect temperatures ranging from 8°C (46°F) in July to around -11°C (12°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Gressoney-Saint-Jean has a notably wet climate with abundant precipitation, recording 1690 mm (67 in) of rain/snowfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives heavy rainfall, averaging 186 mm (7.3 in) of precipitation, recorded across 19 rainy days. In contrast, the driest month February brings less snowfall, with 80 mm (3.1 in) over 14 snowy days. For more details, please visit our Gressoney-Saint-Jean 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 Gressoney-Saint-Jean. While July receives considerable daily sunshine with up to 6.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.8 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 Gressoney-Saint-Jean.

The city experiences its highest humidity in August, reaching 70%. In January, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year