Dorset (Weymouth)
September
Weather in Dorset for September 2025
Your guide to Dorset weather in September - trends and predictions
In general, the average temperature in Dorset at the beginning of September is 19.3 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.3 °C by the end of September.
Dorset in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 90.8 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
17°/14°
Temperatures
29 km/h
Avg max wind
79 %
Avg humidity
Dorset in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2  19° | 3  19° | 4 19° | 5 19° | 6  20° | 7 20° |
| 8 19° | 9 20° | 10 19° | 11 17° | 12 16° | 13 15° | 14 16° |
| 15 18° | 16 19° | 17 18° | 18 19° | 19 19° | 20 18° | 21 17° |
| 22 16° | 23 16° | 24 17° | 25 16° | 26 16° | 27  16° | 28 16° |
| 29 17° | 30  16° |
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Temperatures trend during September in Dorset
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. | Partly cloudy | 19° /15° | 2.9 mm | 5 | |
| 2 Sept. | Light rain shower | 19° /14° | 0.8 mm | 4 | |
| 3 Sept. | Sunny | 19° /15° | 0.7 mm | 5 | |
| 4 Sept. | Sunny | 19° /15° | 0.5 mm | 5 | |
| 5 Sept. | Sunny | 19° /14° | 5.5 mm | 5 | |
| 6 Sept. | Overcast | 20° /16° | 10.4 mm | 5 | |
| 7 Sept. | Sunny | 20° /16° | 1.1 mm | 5 | |
| 8 Sept. | Partly cloudy | 19° /16° | 8.8 mm | 5 | |
| 9 Sept. | Partly cloudy | 20° /16° | 1 mm | 6 | |
| 10 Sept. | Patchy rain possible | 19° /14° | 1.7 mm | 5 | |
| 11 Sept. | Partly cloudy | 17° /14° | 0.2 mm | 4 | |
| 12 Sept. | Overcast | 16° /12° | 0.3 mm | 4 | |
| 13 Sept. | Overcast | 15° /10° | 0 mm | 4 | |
| 14 Sept. | Sunny | 16° /13° | 0 mm | 5 | |
| 15 Sept. | Sunny | 18° /14° | 0 mm | 5 | |
| 16 Sept. | Patchy rain possible | 19° /14° | 0.3 mm | 5 | |
| 17 Sept. | Light rain shower | 18° /13° | 4 mm | 5 | |
| 18 Sept. | Light rain shower | 19° /14° | 2.2 mm | 5 | |
| 19 Sept. | Light rain shower | 19° /14° | 1.4 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /14° | 5.4 mm | 4 | |
| 21 Sept. | Light rain shower | 17° /13° | 7.1 mm | 4 | |
| 22 Sept. | Light rain shower | 16° /13° | 3.1 mm | 4 | |
| 23 Sept. | Patchy rain possible | 16° /13° | 0.4 mm | 4 | |
| 24 Sept. | Overcast | 17° /14° | 1.2 mm | 4 | |
| 25 Sept. | Overcast | 16° /14° | 3 mm | 4 | |
| 26 Sept. | Patchy rain possible | 16° /13° | 12.9 mm | 4 | |
| 27 Sept. | Patchy light drizzle | 16° /12° | 4.4 mm | 4 | |
| 28 Sept. | Light drizzle | 16° /11° | 0.7 mm | 4 | |
| 29 Sept. | Overcast | 17° /13° | 5.9 mm | 4 | |
| 30 Sept. | Cloudy | 16° /13° | 4.8 mm | 4 | |
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Important Notice
Our weather forecast for Dorset 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 Dorset forecast closer to your planned date for the most up-to-date weather information.
Dorset in September - FAQ
What are the expected maximum and minimum temperatures in Dorset during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Dorset during September?
Moderate rainfall is anticipated in Dorset during September, with a total of 90.8 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Dorset during September?
The average wind speed in Dorset during September is 29 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Dorset
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