Aosta Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Aosta.
Climate overview of Aosta
Aosta, Valle d'Aosta, Italy, experiences significant temperature variation throughout the year. Summers bring daytime highs of 17°C (63°F) in July, while winters cool to -5°C (23°F) in January.
The city has a wet climate, receiving around 1300 mm (51 in) of rain/snowfall per year. Despite the high annual total, it has mild summers and very cold winters. November is the wettest month. July is the sunniest month, averaging 9.2 hours of sunshine per day.
Aosta Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Aosta - and find the best time to visit.
Monthly Temperature in Aosta
Depending on the time of the year, temperatures range from moderate to very cold in Aosta. On average, daytime temperatures range from a moderate 17°C (63°F) in July to a very cold -5°C (23°F) in January.
Nighttime temperatures range from 7°C (45°F) in July to -12°C (10°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Aosta
Aosta has a relatively rain/snowy climate with high precipitation levels, averaging 1300 mm (51 in) of rain/snowfall annually. The wettest period in Aosta occurs in November, which receives around 134 mm (5.3 in) of precipitation. During the driest month, February, Aosta experiences moderate snowfall, totaling 90 mm (3.5 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Aosta Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Aosta
In Aosta, summer days are longer and more sunny, with daily sunshine hours peaking at 9.2 hours in July. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 2.3 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Aosta
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Mild summers and very cold winters
- Coldest conditions: January, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Aosta
What is the best time to visit Aosta?
August typically offers the most optimal weather in Aosta. In contrast, January, February, March, April, May, September, October, November and December tend to have less optimal conditions. Aosta has mild summers and very cold winters.
What temperatures can I expect in Aosta?
Daytime highs range from -5°C (23°F) in January to 17°C (63°F) in July. Nighttime lows range from -12°C (10°F) to 7°C (45°F). Temperatures vary considerably through the year.
How much rain does Aosta get?
Annual rainfall is around 1300 mm (51 in). November is the wettest month with 134 mm (5.3 in), while February is the driest with 90 mm (3.5 in). In the coldest months, precipitation may fall as snow.
How sunny is Aosta?
Aosta receives around 2,002 hours of sunshine per year. July is the sunniest month with 275 hours, while January is the cloudiest with just 70 hours. Overall, Aosta enjoys abundant sunshine.
Aosta 3-Day Forecast
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