Climate in Aosta Valley Italy
Average daytime and nighttime temperatures
All climate diagrams on this site result from the collected data from two measuring weather stations in Aosta Valley.
Weather stations at an altitude above 3490m have not been included.
All data correspond to the average monthly values of the last 20 years.
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Aosta Valley is the coldest region in Italy with an average high temperature of only 0°C. The climate is predominantly frosty cold and in the winter months the mercury does not even reach the positive range. In the cold season, the maximum temperatures are well below zero. Due to the warmer temperatures, the best time for traveling is from May to October. Winter athletes will find their favorite weather conditions from November to April.
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› Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 8 hours per day, July is the sunniest month in the region of Aosta Valley. In December, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 12 rain days, May offers the most rain days, while September has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 24.6 mm, the least amount of rain falls in July. November, on the other hand, has the most rain.
Climate charts for other regions in Italy

Most important cities in the region »Aosta Valley«
Only very small villages are located here. The two biggest are Aosta and Chatillon.City | Population | Geo position | |
---|---|---|---|
Aosta | 32,295 | 45° 44' 16"N | 7° 19' 2"E |
Chatillon | 4,334 | 45° 44' 60"N | 7° 37' 0"E |
Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants: geonames.org, United Nations Statistics Division and own research.