Climate Overview
The climate in Ambérieu-en-Bugey is temperate. The average annual temperature is 11°C and approximately 1562mm of precipitation falls per year. Ambérieu-en-Bugey receives a notable amount of rainfall throughout the year, including during its driest month. Ambérieu-en-Bugey 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 0°C. Snowfall occurs from January to December, with around 149cm accumulating over the season.
Temperature
Temperatures in Ambérieu-en-Bugey 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 27°C and the mean temperature sits around 21°C. The coldest month is January, when overnight lows fall to 0°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 September and October, with a 5°C shift in average temperatures.
Precipitation
Ambérieu-en-Bugey is a fairly wet location, receiving approximately 1562mm of precipitation annually, which averages out to around 130mm per month. The wettest month is December, averaging 192mm of rainfall. May and January also tend to see above-average precipitation. The driest month is July, with just 78mm. That's 114mm 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 149cm accumulating over the season. December typically sees the most snow at around 36cm.
Wind
Ambérieu-en-Bugey is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.
Seasons
84 days until Autumn
It is currently summer in Ambérieu-en-Bugey, which began on June 21, 2026. Ambérieu-en-Bugey 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 27°C, while the coldest stretch bottoms out in January near 0°C. Autumn is next, beginning on September 23, 2026 — 84 days from now.
Spring
Temperatures range from 3 to 19°C. Rainfall is heavy, totalling around 415mm across the season with a monthly average of 138mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 13 to 27°C. Rainfall is heavy, totalling around 304mm across the season with a monthly average of 101mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 3 to 22°C. Rainfall is heavy, totalling around 354mm across the season with a monthly average of 118mm. Expect around 21cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 0 to 9°C. Rainfall is heavy, totalling around 490mm across the season with a monthly average of 163mm. Expect around 98cm of snow accumulation during this period. Winds are generally light, averaging 2km/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 Ambérieu-en-Bugey is during July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 83mm 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.
Monthly Climate Data
The table below shows monthly climate averages for Ambérieu-en-Bugey 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.
