Weather in Dorset for September 2025
Until now, September 2025 in Dorset is slightly cooler than the historical average by -1.1 °C.
The forecast for the next days in Dorset predicts temperatures to be around 16 °C, close to the historical average.
In general, the average temperature in Dorset at the beginning of September is 19.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.7 °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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Dorset Weather September
Temperatures trend during September in Dorset
September weather in Dorset day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 19° /15° | 4.5 mm | 5 | |
| 2 Sept. | Light rain shower | 19° /14° | 3.1 mm | 4 | |
| 3 Sept. | Light rain shower | 19° /15° | 3.3 mm | 4 | |
| 4 Sept. |  Sunny | 19° /14° | 5.3 mm | 5 | |
| 5 Sept. | Sunny | 19° /14° | 3.7 mm | 5 | |
| 6 Sept. |  Overcast | 20° /15° | 6.9 mm | 5 | |
| 7 Sept. | Sunny | 20° /16° | 1.1 mm | 5 | |
| 8 Sept. |  Partly cloudy | 18° /15° | 5.9 mm | 5 | |
| 9 Sept. | Partly cloudy | 19° /15° | 1.8 mm | 5 | |
| 10 Sept. | Light rain shower | 18° /14° | 2.2 mm | 4 | |
| 11 Sept. | Partly cloudy | 17° /13° | 1.3 mm | 4 | |
| 12 Sept. | Overcast | 16° /12° | 2.1 mm | 4 | |
| 13 Sept. | Overcast | 15° /11° | 2.4 mm | 4 | |
| 14 Sept. | Sunny | 17° /13° | 1.2 mm | 4 | |
| 15 Sept. | Sunny | 17° /14° | 0.5 mm | 5 | |
| 16 Sept. | Patchy rain possible | 18° /14° | 0.4 mm | 4 | |
| 17 Sept. | Light rain shower | 18° /13° | 4 mm | 5 | |
| 18 Sept. | Patchy rain possible | 18° /17° | 0.2 mm | 0.8 | |
| 19 Sept. | Sunny | 18° /16° | 0 mm | 1 | |
| 20 Sept. | Patchy rain possible | 18° /15° | 0.2 mm | 0.7 | |
| 21 Sept. | Patchy rain possible | 15° /13° | 1.6 mm | 0.4 | |
| 22 Sept. | Patchy rain possible | 14° /12° | 2.8 mm | 3 | |
| 23 Sept. | Patchy rain possible | 15° /10° | 0.1 mm | 3 | |
| 24 Sept. | Patchy rain possible | 13° /10° | 1.5 mm | 3 | |
| 25 Sept. |  Moderate rain | 15° /13° | 5 mm | 3 | |
| 26 Sept. | Patchy rain possible | 17° /13° | 1.6 mm | 3 | |
| 27 Sept. | Patchy rain possible | 15° /12° | 0.2 mm | 3 | |
| 28 Sept. | Partly cloudy | 14° /11° | 0 mm | 4 | |
| 29 Sept. | Partly cloudy | 15° /11° | 0 mm | 4 | |
| 30 Sept. | Partly cloudy | 14° /11° | 0 mm | 4 | |
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Dorset in September - FAQ
Dorset water temperatures in September
The average water temperature of the Atlantic Ocean near Dorset in September is 17.3 °C. At the beginning of September temperatures are around 17.4 °C; by the end of the month they get a bit cooler and reach 16.4 °C.
- What is the water temperature in Dorset in September?
- The average water temperature in Dorset in September is 17.3 °C.
- Can you swim in Dorset in September?
- Brisk: quick dips and active swimming are fine, but pack a 2–3 mm spring suit if you plan longer sessions or early-morning outings.
September rainfall patterns in Dorset
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Where is Dorset?Get accurate weather forecasts for Dorset, located at latitude 50.614 and longitude -2.46. Stay updated with localized weather information tailored for Dorset.