Weather in Weymouth for September 2026
Until now, September 2026 in Weymouth is slightly cooler than the historical average by 1 °C.
The forecast for the next days in Weymouth predicts temperatures to be around 18 °C, close to the historical average.
In general, the average temperature in Weymouth at the beginning of September is 19 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.9 °C by the end of September.
Weymouth 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
Weymouth Weather September
Temperatures trend during September in Weymouth
September weather in Weymouth 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. | Sunny | 18° /16° | 0 mm | 4.5 | |
| 13 Sept. | Overcast | 19° /18° | 3.5 mm | 4.5 | |
| 14 Sept. | Sunny | 19° /17° | 0 mm | 4.3 | |
| 15 Sept. | Sunny | 20° /16° | 0.1 mm | 5 | |
| 16 Sept. | Sunny | 18° /15° | 0.1 mm | 5 | |
| 17 Sept. | Overcast | 17° /14° | 0.1 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /15° | 0.5 mm | 4 | |
| 19 Sept. | Light rain shower | 17° /16° | 7.7 mm | 4 | |
| 20 Sept. | Patchy rain possible | 16° /14° | 3 mm | 5 | |
| 21 Sept. | Patchy rain possible | 18° /15° | 17.1 mm | 5 | |
| 22 Sept. | Overcast | 18° /16° | 0.1 mm | 5 | |
| 23 Sept. | Patchy rain possible | 19° /17° | 0.6 mm | 5 | |
| 24 Sept. | Overcast | 19° /18° | 0 mm | 4 | |
| 25 Sept. |  Cloudy | 19° /17° | 0 mm | 5 | |
| 26 Sept. | Patchy rain possible | 16° /12° | 8.6 mm | 4 | |
| 27 Sept. |  Patchy light drizzle | 16° /12° | 3.2 mm | 4 | |
| 28 Sept. | Patchy rain possible | 16° /12° | 0.5 mm | 4 | |
| 29 Sept. | Overcast | 16° /12° | 3.9 mm | 4 | |
| 30 Sept. | Cloudy | 16° /12° | 3.2 mm | 4 | |
| Next | |||||
Weymouth in September - FAQ
What are the expected maximum and minimum temperatures in Weymouth during September?
How much rainfall should be expected in Weymouth during September?
What are the typical wind conditions in Weymouth during September?
Weymouth water temperatures in September
The average water temperature of the Atlantic Ocean near Weymouth in September is 17.4 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Weymouth in September?
- The average water temperature in Weymouth in September is 17.4 °C.
- Can you swim in Weymouth 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 Weymouth
Quick links
Where is Weymouth?Get accurate weather forecasts for Weymouth, located at latitude 50.614 and longitude -2.46. Stay updated with localized weather information tailored for Weymouth.