Swindon
September
Weather in Swindon for September 2025
Your guide to Swindon weather in September - trends and predictions
In general, the average temperature in Swindon at the beginning of September is 21.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.4 °C by the end of September.
The climate of Swindon in September is notably wet, with an average of 15 rainy days, and a total of 86.1 mm of precipitation.
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Temperatures
Rain 🌧️
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15
Dry days
15
Rainy days
0
Snow days
18°/11°
Temperatures
21 km/h
Avg max wind
79 %
Avg humidity
Swindon in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2  21° | 3 20° | 4  20° | 5 21° | 6  24° | 7 24° |
| 8 23° | 9 23° | 10 22° | 11 17° | 12  15° | 13 16° | 14 18° |
| 15 20° | 16  20° | 17 19° | 18 19° | 19 20° | 20 18° | 21 19° |
| 22 16° | 23  16° | 24 17° | 25 16° | 26 17° | 27 14° | 28 15° |
| 29 14° | 30 15° |
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Temperatures trend during September in Swindon
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. | Patchy rain possible | 21° /12° | 8.3 mm | 5 | |
| 2 Sept. | Overcast | 21° /13° | 0.2 mm | 5 | |
| 3 Sept. | Overcast | 20° /11° | 0.3 mm | 5 | |
| 4 Sept. | Sunny | 20° /12° | 0.2 mm | 6 | |
| 5 Sept. | Sunny | 21° /12° | 14.1 mm | 6 | |
| 6 Sept. | Partly cloudy | 24° /14° | 4.2 mm | 6 | |
| 7 Sept. | Sunny | 24° /14° | 0.2 mm | 6 | |
| 8 Sept. | Partly cloudy | 23° /15° | 15.6 mm | 6 | |
| 9 Sept. | Sunny | 23° /13° | 0.3 mm | 6 | |
| 10 Sept. | Partly cloudy | 22° /12° | 1.2 mm | 6 | |
| 11 Sept. | Light rain shower | 17° /10° | 0.9 mm | 4 | |
| 12 Sept. | Fog | 15° /7° | 0.8 mm | 4 | |
| 13 Sept. | Overcast | 16° /7° | 0 mm | 4 | |
| 14 Sept. | Overcast | 18° /9° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 20° /9° | 0 mm | 5 | |
| 16 Sept. | Light drizzle | 20° /11° | 0.3 mm | 5 | |
| 17 Sept. | Light rain shower | 19° /11° | 2.7 mm | 4 | |
| 18 Sept. | Light drizzle | 19° /10° | 0.3 mm | 5 | |
| 19 Sept. | Light drizzle | 20° /11° | 0.6 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /11° | 7.3 mm | 5 | |
| 21 Sept. | Light rain shower | 19° /10° | 2.7 mm | 5 | |
| 22 Sept. | Light rain shower | 16° /10° | 2.8 mm | 4 | |
| 23 Sept. | Cloudy | 16° /9° | 0.1 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /11° | 0.5 mm | 4 | |
| 25 Sept. | Patchy rain possible | 16° /10° | 2.1 mm | 4 | |
| 26 Sept. | Patchy light drizzle | 17° /10° | 3.6 mm | 4 | |
| 27 Sept. | Fog | 14° /8° | 4.7 mm | 4 | |
| 28 Sept. | Overcast | 15° /7° | 1 mm | 4 | |
| 29 Sept. | Partly cloudy | 14° /8° | 5.5 mm | 4 | |
| 30 Sept. | Overcast | 15° /9° | 5.5 mm | 4 | |
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Important Notice
Our weather forecast for Swindon 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 Swindon forecast closer to your planned date for the most up-to-date weather information.
Swindon in September - FAQ
What are the expected maximum and minimum temperatures in Swindon during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Swindon during September?
Moderate rainfall is anticipated in Swindon during September, with a total of 86.1 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Swindon during September?
The average wind speed in Swindon during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Swindon
Explore the daily rainfall trends and prepare for Swindons September weather 💧
UV exposure in Swindon during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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