Weather in Bournemouth for September 2025
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Until now, September 2025 in Bournemouth is slightly cooler than the historical average by -1.7 °C.
Expect cooler weather in the next days in Bournemouth with the forecast suggesting a temperature of 16.9 °C, lower than the historical average.
In general, the average temperature in Bournemouth at the beginning of September is 20.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.9 °C by the end of September.
Bournemouth in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 83.4 mm.
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Bournemouth Weather September
Temperatures trend during September in Bournemouth
September weather in Bournemouth day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 21° /14° | 7 mm | 5 | |
| 2 Sept. | Light rain shower | 20° /13° | 4.1 mm | 4 | |
| 3 Sept. |  Sunny | 20° /13° | 2.9 mm | 5 | |
| 4 Sept. | Light rain shower | 21° /13° | 2.5 mm | 5 | |
| 5 Sept. | Sunny | 21° /13° | 3.7 mm | 5 | |
| 6 Sept. |  Overcast | 21° /14° | 5.2 mm | 5 | |
| 7 Sept. | Sunny | 22° /14° | 1.2 mm | 6 | |
| 8 Sept. |  Partly cloudy | 21° /14° | 7.5 mm | 5 | |
| 9 Sept. | Partly cloudy | 21° /14° | 0.6 mm | 5 | |
| 10 Sept. | Patchy rain possible | 21° /13° | 1.3 mm | 5 | |
| 11 Sept. |  Mist | 18° /12° | 1 mm | 4 | |
| 12 Sept. | Light rain shower | 17° /10° | 2.1 mm | 4 | |
| 13 Sept. | Overcast | 16° /9° | 2.4 mm | 4 | |
| 14 Sept. | Sunny | 18° /10° | 0.8 mm | 5 | |
| 15 Sept. | Patchy rain possible | 17° /14° | 0.7 mm | 1 | |
| 16 Sept. | Patchy rain possible | 18° /13° | 0.5 mm | 0.7 | |
| 17 Sept. | Patchy rain possible | 18° /14° | 2.2 mm | 0.5 | |
| 18 Sept. | Patchy rain possible | 20° /16° | 0.1 mm | 0.8 | |
| 19 Sept. | Sunny | 21° /15° | 0 mm | 0.9 | |
| 20 Sept. | Patchy rain possible | 19° /15° | 0.3 mm | 4 | |
| 21 Sept. | Patchy rain possible | 15° /13° | 1.2 mm | 3 | |
| 22 Sept. | Patchy rain possible | 15° /12° | 4.6 mm | 3 | |
| 23 Sept. | Patchy rain possible | 16° /10° | 0.4 mm | 3 | |
| 24 Sept. | Patchy rain possible | 16° /10° | 0.2 mm | 3 | |
| 25 Sept. | Patchy rain possible | 14° /8° | 0.2 mm | 3 | |
| 26 Sept. | Sunny | 16° /8° | 0 mm | 4 | |
| 27 Sept. | Sunny | 16° /9° | 0 mm | 4 | |
| 28 Sept. | Partly cloudy | 16° /10° | 0 mm | 4 | |
| 29 Sept. |  Cloudy | 16° /10° | 2.3 mm | 4 | |
| 30 Sept. | Cloudy | 17° /10° | 5.3 mm | 4 | |
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Bournemouth in September - FAQ
Bournemouth water temperatures in September
The average water temperature of the Atlantic Ocean near Bournemouth in September is 17.6 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Bournemouth in September?
- The average water temperature in Bournemouth in September is 17.6 °C.
- Can you swim in Bournemouth 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 Bournemouth
UV exposure in Bournemouth during September
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Where is Bournemouth?Get accurate weather forecasts for Bournemouth, located at latitude 50.72 and longitude -1.88. Stay updated with localized weather information tailored for Bournemouth.