Climate Insights for Aoste

The climate in Aoste is temperate. The average annual temperature is 12°C and approximately 1297mm of precipitation falls per year. Aoste receives a notable amount of rainfall throughout the year, including during its driest month. Aoste is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to 0°C. Snowfall occurs from January to December, with around 83cm accumulating over the season.

Temperatures in Aoste vary considerably across the year, with a 28°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 22°C. January is the coolest month, with minimum temperatures around 0°C and an average of 3°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Aoste is a fairly wet location, receiving approximately 1297mm of precipitation annually, which averages out to around 108mm per month. The wettest month is May, averaging 147mm of rainfall. December and November also tend to see above-average precipitation. The driest month is August, with just 78mm. That's 68mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 83cm accumulating over the season. December typically sees the most snow at around 22cm.

Aoste is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently autumn in Aoste, which began on September 23, 2026. Aoste is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 28°C, while the coldest stretch bottoms out in January near 0°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The best time to visit Aoste is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 80mm per month. By contrast, January can be quite cold with temperatures dropping to 0°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Aoste based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.