Climate Insights for Agen

The climate in Agen is temperate. The average annual temperature is 15°C and approximately 788mm of precipitation falls per year. Agen receives a notable amount of rainfall throughout the year, including during its driest month. Agen 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, February, December, when temperatures can drop to 3°C.

Temperatures in Agen vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 3°C and an average of 6°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.

Agen is a relatively dry area, receiving approximately 788mm of precipitation annually, which averages out to around 66mm per month. The wettest month is June, averaging 95mm of rainfall. May and November also tend to see above-average precipitation. The driest month is July, with just 35mm. That's 60mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Agen is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently spring in Agen, which began on March 20, 2026. Agen 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 30°C, while the coldest stretch bottoms out in January near 3°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Agen is during May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 64mm per month. By contrast, January can be quite cold with temperatures dropping to 3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Agen 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. 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.