Weather in Exeter in September 2025
Average weather
Average temperature in Exeter in September
The temperature in September is +72°F on average, with a range between a maximum of +84°F during the day and a minimum of +45°F at night.
The average maximum temperature goes down 18% by the end of the month, compared with the beginning of the month, from +73°F to +66°F.
Is Exeter warm or cold in September?
Exeter is typically mild in September.
Maximum temperatures go down compared to the previous month from +68°F to +64°F. The minimum temperature also goes down from +55°F to +52°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
September is one of the warmest months in Exeter, here is the comparison with other months:
Climate in Exeter in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +68°F | +64°F | +59°F | ||||
| Min. temperature | ||||||
| +41°F | +34°F | +25°F | ||||
| Max. temperature | ||||||
| +91°F | +84°F | +77°F | ||||
| Rainfall | ||||||
| 82 mm | 77 mm | 120 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 83% | 85% | 87% | ||||
| Air pressure | ||||||
| 1015 HPa | 1015 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 2 | 2 | 2 | ||||
| Cloudy days | ||||||
| 11 | 12 | 11 | ||||
| Rainy days | ||||||
| 17 | 15 | 18 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +68°F in the day, the average maximum temperature lowers to +64°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 82 mm to 77 mm. Humidity rises from 83% to 85%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 2 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Exeter is gradually increasing during September, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in Exeter?
Climate Change Over the Years
The climate in Exeter in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1986 (+54°F) and the highest in 2022 (+62°F). The driest year was 2011 with only 572 mm of rainfall, and the wettest year was 2023 with 5354 mm.
FAQ
Is September a good time to visit Exeter?
Can you sunbathe in Exeter in September?
Is Exeter rainy in September?
Is it sunny in Exeter in September?
Other cities in United Kingdom
Monthly weather in Exeter
Source of the data
For this page, we’ve looked at the typical weather in Exeter, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.