Devon (Exeter)
September
Weather in Devon for September 2025
Your guide to Devon weather in September - trends and predictions
In general, the average temperature in Devon at the beginning of September is 21.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.1 °C by the end of September.
Expect significant rainfall in Devon during September, with an average of 17 rainy days.
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13
Dry days
17
Rainy days
0
Snow days
20°/12°
Temperatures
22 km/h
Avg max wind
81 %
Avg humidity
Devon in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2  22° | 3  21° | 4 21° | 5 21° | 6 20° | 7 22° |
| 8  22° | 9 21° | 10 20° | 11 17° | 12  16° | 13 16° | 14  18° |
| 15 19° | 16 21° | 17 18° | 18 20° | 19  20° | 20 19° | 21 17° |
| 22 17° | 23 16° | 24 17° | 25 17° | 26 17° | 27 15° | 28 15° |
| 29 16° | 30 16° |
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Temperatures trend during September in Devon
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Overcast | 21° /12° | 1.6 mm | 5 | |
| 2 Sept. | Light rain shower | 22° /11° | 0.4 mm | 5 | |
| 3 Sept. | Sunny | 21° /11° | 0.2 mm | 5 | |
| 4 Sept. | Sunny | 21° /12° | 0 mm | 5 | |
| 5 Sept. | Sunny | 21° /11° | 6.7 mm | 6 | |
| 6 Sept. | Patchy rain possible | 20° /14° | 12.2 mm | 5 | |
| 7 Sept. | Patchy rain possible | 22° /14° | 3.2 mm | 5 | |
| 8 Sept. | Partly cloudy | 22° /15° | 18 mm | 6 | |
| 9 Sept. | Partly cloudy | 21° /13° | 0.7 mm | 6 | |
| 10 Sept. | Light rain shower | 20° /12° | 1.4 mm | 5 | |
| 11 Sept. | Light rain shower | 17° /10° | 1.5 mm | 4 | |
| 12 Sept. | Mist | 16° /8° | 0.4 mm | 4 | |
| 13 Sept. | Overcast | 16° /8° | 0 mm | 4 | |
| 14 Sept. | Cloudy | 18° /8° | 0 mm | 5 | |
| 15 Sept. | Overcast | 19° /9° | 0 mm | 5 | |
| 16 Sept. | Patchy rain possible | 21° /12° | 0.9 mm | 5 | |
| 17 Sept. | Light rain shower | 18° /11° | 4.8 mm | 5 | |
| 18 Sept. | Light rain shower | 20° /11° | 1.4 mm | 5 | |
| 19 Sept. | Light drizzle | 20° /12° | 0.5 mm | 5 | |
| 20 Sept. | Light rain shower | 19° /11° | 6.9 mm | 5 | |
| 21 Sept. | Light rain shower | 17° /9° | 6.5 mm | 4 | |
| 22 Sept. | Light drizzle | 17° /10° | 5.3 mm | 4 | |
| 23 Sept. | Overcast | 16° /9° | 0.5 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /12° | 1 mm | 4 | |
| 25 Sept. | Cloudy | 17° /11° | 1.6 mm | 4 | |
| 26 Sept. | Light drizzle | 17° /11° | 3.1 mm | 4 | |
| 27 Sept. | Light rain shower | 15° /8° | 3.6 mm | 4 | |
| 28 Sept. | Patchy rain possible | 15° /8° | 0.7 mm | 4 | |
| 29 Sept. | Cloudy | 16° /9° | 12.8 mm | 4 | |
| 30 Sept. | Overcast | 16° /9° | 1.9 mm | 4 | |
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Important Notice
Our weather forecast for Devon in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Devon forecast closer to your planned date for the most up-to-date weather information.
Devon in September - FAQ
What are the expected maximum and minimum temperatures in Devon during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Devon during September?
In September, Devon can expect light to moderate rainfall, totaling 44.2 mm across approximately 17 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Devon during September?
The average wind speed in Devon during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Devon
Explore the daily rainfall trends and prepare for Devons September weather 💧
UV exposure in Devon during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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