Climate Insights for Weil am Rhein

The climate in Weil am Rhein is temperate. The average annual temperature is 11°C and approximately 1223mm of precipitation falls per year. Weil am Rhein receives a notable amount of rainfall throughout the year, including during its driest month. Weil am Rhein 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 79cm accumulating over the season.

Temperatures in Weil am Rhein vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 25°C and the mean temperature sits around 20°C. The coldest month is January, when overnight lows fall to -1°C and the daily average is 2°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.

Weil am Rhein is a fairly wet location, receiving approximately 1223mm of precipitation annually, which averages out to around 102mm per month. The wettest month is June, averaging 133mm of rainfall. May and January also tend to see above-average precipitation. The driest month is February, with just 75mm. That's 58mm less than June, 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 79cm accumulating over the season. January typically sees the most snow at around 24cm.

Weil am Rhein is relatively calm, with an average annual wind speed of 8km/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 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 9km/h in winter, 8km/h in spring, 6km/h in summer, 7km/h in autumn.

It is currently summer in Weil am Rhein, which began on June 21, 2026. Weil am Rhein 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 25°C, while the coldest stretch bottoms out in January near -1°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Weil am Rhein is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 89mm per month. By contrast, July can be uncomfortably hot with highs reaching 25°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.

The table below shows monthly climate averages for Weil am Rhein 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.