Weather in Brighton for September 2026
Until now, September 2026 in Brighton is slightly cooler than the historical average by 1.2 °C.
The forecast for the next days in Brighton predicts temperatures to be around 18 °C, close to the historical average.
In general, the average temperature in Brighton at the beginning of September is 20.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.9 °C by the end of September.
Brighton experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 93.4 mm.
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Brighton Weather September
Temperatures trend during September in Brighton
September weather in Brighton day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 20° /16° | 6.5 mm | 4 | |
| 2 Sept. | Patchy rain possible | 19° /16° | 2.4 mm | 4 | |
| 3 Sept. | Patchy rain possible | 20° /16° | 2.1 mm | 4 | |
| 4 Sept. | Light rain shower | 20° /15° | 2.9 mm | 4 | |
| 5 Sept. |  Sunny | 19° /14° | 6.6 mm | 5 | |
| 6 Sept. |  Overcast | 21° /16° | 3.3 mm | 4 | |
| 7 Sept. | Sunny | 22° /17° | 0.7 mm | 4 | |
| 8 Sept. | Sunny | 19° /15° | 6.5 mm | 4 | |
| 9 Sept. | Sunny | 19° /14° | 0 mm | 5 | |
| 10 Sept. | Light rain shower | 19° /15° | 2.1 mm | 4 | |
| 11 Sept. | Sunny | 17° /13° | 1.9 mm | 4 | |
| 12 Sept. | Sunny | 19° /17° | 0 mm | 4.3 | |
| 13 Sept. | Patchy rain possible | 20° /18° | 4.5 mm | 3.1 | |
| 14 Sept. | Sunny | 19° /18° | 0 mm | 4.4 | |
| 15 Sept. | Sunny | 20° /17° | 2 mm | 5 | |
| 16 Sept. | Sunny | 18° /13° | 0.6 mm | 5 | |
| 17 Sept. | Overcast | 18° /14° | 0 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /15° | 0.1 mm | 4 | |
| 19 Sept. | Overcast | 18° /16° | 15 mm | 5 | |
| 20 Sept. | Sunny | 17° /13° | 2.1 mm | 5 | |
| 21 Sept. | Patchy rain possible | 18° /15° | 5.4 mm | 5 | |
| 22 Sept. | Overcast | 17° /15° | 0 mm | 4 | |
| 23 Sept. | Patchy rain possible | 19° /18° | 0.6 mm | 5 | |
| 24 Sept. | Overcast | 20° /18° | 0 mm | 5 | |
| 25 Sept. | Patchy rain possible | 17° /13° | 4 mm | 4 | |
| 26 Sept. | Light rain shower | 16° /13° | 6 mm | 4 | |
| 27 Sept. | Patchy rain possible | 16° /12° | 5.2 mm | 3 | |
| 28 Sept. | Patchy rain possible | 16° /11° | 0.1 mm | 4 | |
| 29 Sept. | Patchy rain possible | 16° /11° | 1 mm | 4 | |
| 30 Sept. |  Cloudy | 17° /12° | 3.9 mm | 4 | |
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Brighton in September - FAQ
What are the expected maximum and minimum temperatures in Brighton during September?
How much rainfall should be expected in Brighton during September?
What are the typical wind conditions in Brighton during September?
Brighton water temperatures in September
The average water temperature of the Atlantic Ocean near Brighton in September is 15 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Brighton in September?
- The average water temperature in Brighton in September is 15 °C.
- Can you swim in Brighton 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 Brighton
UV exposure in Brighton during September
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