Weather in Dorset for September 2026
Until now, September 2026 in Dorset has been nearly identical to the historical average, with a temperature of 17.9 °C (showing only a slight deviation of 0.3 °C).
The forecast for the next days in Dorset predicts temperatures to be around 19 °C, close to the historical average.
In general, the average temperature in Dorset at the beginning of September is 19 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 18.7 °C by the end of September.
Dorset experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 88.1 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
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 | 18° /15° | 3.4 mm | 4 | |
| 2 Sept. | Light rain shower | 19° /15° | 2.4 mm | 3 | |
| 3 Sept. | Light rain shower | 19° /16° | 2.6 mm | 4 | |
| 4 Sept. | Patchy rain possible | 19° /15° | 4.1 mm | 4 | |
| 5 Sept. |  Overcast | 18° /14° | 2.8 mm | 4 | |
| 6 Sept. | Overcast | 20° /16° | 5.2 mm | 4 | |
| 7 Sept. |  Sunny | 20° /16° | 0.9 mm | 4 | |
| 8 Sept. |  Partly cloudy | 18° /15° | 10.6 mm | 4 | |
| 9 Sept. | Partly cloudy | 19° /15° | 1.4 mm | 5 | |
| 10 Sept. | Patchy rain possible | 18° /13° | 1.9 mm | 4 | |
| 11 Sept. | Partly cloudy | 17° /14° | 1.4 mm | 4 | |
| 12 Sept. | Overcast | 16° /12° | 1.6 mm | 3 | |
| 13 Sept. | Overcast | 16° /12° | 2 mm | 3 | |
| 14 Sept. | Sunny | 18° /14° | 0.9 mm | 4 | |
| 15 Sept. | Sunny | 18° /14° | 0.4 mm | 5 | |
| 16 Sept. | Patchy rain possible | 18° /14° | 0.4 mm | 4 | |
| 17 Sept. | Light rain shower | 18° /14° | 2.9 mm | 4 | |
| 18 Sept. | Patchy rain possible | 18° /14° | 1.2 mm | 4 | |
| 19 Sept. | Light rain shower | 19° /14° | 1 mm | 5 | |
| 20 Sept. | Overcast | 18° /17° | 0.8 mm | 3.8 | |
| 21 Sept. | Sunny | 18° /15° | 0 mm | 4.2 | |
| 22 Sept. | Sunny | 18° /17° | 0 mm | 4.1 | |
| 23 Sept. | Overcast | 20° /16° | 0 mm | 3.4 | |
| 24 Sept. | Sunny | 18° /15° | 0.2 mm | 5 | |
| 25 Sept. | Sunny | 18° /17° | 0 mm | 5 | |
| 26 Sept. | Overcast | 19° /17° | 0 mm | 5 | |
| 27 Sept. | Sunny | 19° /17° | 0 mm | 5 | |
| 28 Sept. | Sunny | 19° /18° | 0 mm | 5 | |
| 29 Sept. | Sunny | 19° /17° | 0 mm | 5 | |
| 30 Sept. | Overcast | 19° /17° | 8 mm | 4 | |
| Next | |||||
Dorset in September - FAQ
What are the expected maximum and minimum temperatures in Dorset during September?
How much rainfall should be expected in Dorset during September?
What are the typical wind conditions in Dorset during September?
Dorset water temperatures in September
The average water temperature of the Atlantic Ocean near Dorset in September is 17.4 °C. At the beginning of September temperatures are around 17.2 °C; by the end of the month they get a bit warmer and reach 18.1 °C.
- What is the water temperature in Dorset in September?
- The average water temperature in Dorset in September is 17.4 °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
Quick links
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.