Climate Insights for Exeter

The climate in Exeter is warm and mild. The average annual temperature is 18°C and approximately 571mm of precipitation falls per year. March is the wettest month, receiving around 137mm of rainfall. Exeter is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are December, February, January, when temperatures can drop to 5°C.

Temperatures in Exeter vary considerably across the year, with a 32°C difference between the coldest and warmest months. July is the hottest month, with daytime highs reaching 37°C and an average of 29°C. December is the coolest month, with minimum temperatures around 5°C and an average of 10°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Exeter is a relatively dry area, receiving approximately 571mm of precipitation annually, which averages out to around 48mm per month. The wettest month is March, averaging 137mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 136mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Exeter is relatively calm, with an average annual wind speed of 9km/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 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently spring in Exeter, which began on March 20, 2026. Exeter 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 37°C, while the coldest stretch bottoms out in December near 5°C. Summer is next, beginning on June 21, 2026 — 86 days from now.

The best time to visit Exeter is during April, May and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 26mm per month. By contrast, July can be uncomfortably hot with highs reaching 37°C, while December is the coldest period with lows dropping to 5°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Exeter 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.