Climate Overview
The climate in Aix-les-Bains is temperate. The average annual temperature is 12°C and approximately 1561mm of precipitation falls per year. Aix-les-Bains receives a notable amount of rainfall throughout the year, including during its driest month. Aix-les-Bains is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to -1°C. Snowfall occurs from January to December, with around 147cm accumulating over the season.
Temperature
Temperatures in Aix-les-Bains vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 21°C. The coldest month is January, when overnight lows fall to -1°C and the daily average is 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.
Precipitation
Aix-les-Bains is a fairly wet location, receiving approximately 1561mm of precipitation annually, which averages out to around 130mm per month. The wettest month is December, averaging 180mm of rainfall. May and January also tend to see above-average precipitation. The driest month is August, with just 94mm. That's 86mm less than December, 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 147cm accumulating over the season. December typically sees the most snow at around 39cm.
Wind
Aix-les-Bains is relatively calm, with an average annual wind speed of 5km/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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4km/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.
Seasons
87 days until Winter
It is currently autumn in Aix-les-Bains, which began on September 23, 2026. Aix-les-Bains 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 July at around 26°C, while the coldest stretch bottoms out in January near -1°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 2 to 19°C. Rainfall is heavy, totalling around 397mm across the season with a monthly average of 132mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 14 to 26°C. Rainfall is heavy, totalling around 347mm across the season with a monthly average of 116mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 3 to 21°C. Rainfall is heavy, totalling around 382mm across the season with a monthly average of 127mm. Expect around 17cm of snow accumulation during this period. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -1 to 9°C. Rainfall is heavy, totalling around 434mm across the season with a monthly average of 145mm. Expect around 99cm of snow accumulation during this period. Winds are generally light, averaging 5km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Best Time to Visit
The best time to visit Aix-les-Bains is during August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 94mm per month. By contrast, July can be uncomfortably hot with highs reaching 26°C, while January is the coldest period with lows dropping to -1°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.
Monthly Climate Data
The table below shows monthly climate averages for Aix-les-Bains 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.
