Brighton
September
Weather in Brighton for September 2025
Your guide to Brighton weather in September - trends and predictions
In general, the average temperature in Brighton at the beginning of September is 20.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.6 °C by the end of September.
The climate of Brighton in September is notably wet, with an average of 12 rainy days.
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18
Dry days
12
Rainy days
0
Snow days
20°/16°
Temperatures
26 km/h
Avg max wind
77 %
Avg humidity
Brighton in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  21° | 2  19° | 3  20° | 4 20° | 5 20° | 6  21° | 7 23° |
| 8 20° | 9 21° | 10  21° | 11 17° | 12  17° | 13 17° | 14 17° |
| 15 19° | 16 21° | 17  19° | 18 20° | 19 20° | 20 19° | 21 18° |
| 22  17° | 23 16° | 24 17° | 25 17° | 26 17° | 27 16° | 28 16° |
| 29 16° | 30 17° |
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Temperatures trend during September in Brighton
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate rain | 21° /16° | 11.6 mm | 5 | |
| 2 Sept. | Patchy rain possible | 19° /16° | 0.5 mm | 5 | |
| 3 Sept. | Sunny | 20° /15° | 0.9 mm | 5 | |
| 4 Sept. | Sunny | 20° /15° | 2.8 mm | 5 | |
| 5 Sept. | Sunny | 20° /15° | 13.1 mm | 5 | |
| 6 Sept. | Cloudy | 21° /17° | 6.6 mm | 5 | |
| 7 Sept. | Sunny | 23° /17° | 0.4 mm | 6 | |
| 8 Sept. | Sunny | 20° /17° | 3.3 mm | 5 | |
| 9 Sept. | Sunny | 21° /16° | 0 mm | 5 | |
| 10 Sept. | Partly cloudy | 21° /15° | 1.8 mm | 5 | |
| 11 Sept. | Sunny | 17° /13° | 0 mm | 5 | |
| 12 Sept. | Overcast | 17° /12° | 0.6 mm | 4 | |
| 13 Sept. | Overcast | 17° /11° | 0 mm | 5 | |
| 14 Sept. | Partly cloudy | 17° /12° | 0 mm | 5 | |
| 15 Sept. | Sunny | 19° /14° | 0 mm | 6 | |
| 16 Sept. | Sunny | 21° /14° | 0 mm | 5 | |
| 17 Sept. | Light rain | 19° /14° | 0.6 mm | 5 | |
| 18 Sept. | Patchy rain possible | 20° /15° | 8.4 mm | 5 | |
| 19 Sept. | Light rain shower | 20° /15° | 1.9 mm | 5 | |
| 20 Sept. | Light rain shower | 19° /15° | 15.6 mm | 5 | |
| 21 Sept. | Light rain shower | 18° /14° | 6.7 mm | 5 | |
| 22 Sept. | Patchy light rain with thunder | 17° /14° | 2.5 mm | 4 | |
| 23 Sept. | Patchy rain possible | 16° /12° | 0.6 mm | 4 | |
| 24 Sept. | Overcast | 17° /14° | 1.2 mm | 4 | |
| 25 Sept. | Patchy rain possible | 17° /15° | 5.9 mm | 4 | |
| 26 Sept. | Light rain shower | 17° /14° | 9 mm | 4 | |
| 27 Sept. | Patchy rain possible | 16° /12° | 7.8 mm | 4 | |
| 28 Sept. | Patchy rain possible | 16° /11° | 0.2 mm | 4 | |
| 29 Sept. | Light rain shower | 16° /11° | 1.5 mm | 4 | |
| 30 Sept. | Cloudy | 17° /12° | 5.9 mm | 4 | |
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Important Notice
Our weather forecast for Brighton in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Brighton forecast closer to your planned date for the most up-to-date weather information.
Brighton in September - FAQ
What are the expected maximum and minimum temperatures in Brighton during September?
During September, expect a variety of temperatures with highs around 20° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Brighton during September?
Moderate rainfall is anticipated in Brighton during September, with a total of 84.7 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Brighton during September?
The average wind speed in Brighton during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Brighton
Explore the daily rainfall trends and prepare for Brightons September weather 💧
UV exposure in Brighton during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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