Sefton (Southport)
September
Weather in Sefton for September 2025
Your guide to Sefton weather in September - trends and predictions
In general, the average temperature in Sefton at the beginning of September is 20.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.6 °C by the end of September.
Expect significant rainfall in Sefton during September, with an average of 20 rainy days.
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10
Dry days
20
Rainy days
0
Snow days
18°/13°
Temperatures
26 km/h
Avg max wind
79 %
Avg humidity
Sefton in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  18° | 2  19° | 3  17° | 4  20° | 5 21° | 6 23° | 7 23° |
| 8 22° | 9 18° | 10  19° | 11 15° | 12 14° | 13  15° | 14  16° |
| 15 17° | 16 16° | 17  19° | 18 18° | 19 19° | 20 19° | 21 18° |
| 22 17° | 23 14° | 24 16° | 25 15° | 26 15° | 27 14° | 28 14° |
| 29 14° | 30 14° |
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Temperatures trend during September in Sefton
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. | Light drizzle | 18° /12° | 2.8 mm | 5 | |
| 2 Sept. | Patchy rain possible | 19° /14° | 2.6 mm | 5 | |
| 3 Sept. | Partly cloudy | 17° /13° | 0.2 mm | 5 | |
| 4 Sept. | Sunny | 20° /12° | 0.1 mm | 5 | |
| 5 Sept. | Sunny | 21° /13° | 0.2 mm | 6 | |
| 6 Sept. | Partly cloudy | 23° /15° | 0 mm | 6 | |
| 7 Sept. | Light rain shower | 23° /16° | 1.6 mm | 6 | |
| 8 Sept. | Patchy rain possible | 22° /16° | 2.1 mm | 5 | |
| 9 Sept. | Patchy rain possible | 18° /15° | 0.9 mm | 4 | |
| 10 Sept. | Moderate or heavy rain shower | 19° /13° | 6.7 mm | 4 | |
| 11 Sept. | Light drizzle | 15° /12° | 8.3 mm | 4 | |
| 12 Sept. | Partly cloudy | 14° /11° | 2.2 mm | 4 | |
| 13 Sept. | Cloudy | 15° /8° | 0 mm | 4 | |
| 14 Sept. | Overcast | 16° /11° | 0 mm | 4 | |
| 15 Sept. | Partly cloudy | 17° /13° | 1.2 mm | 5 | |
| 16 Sept. | Patchy rain possible | 16° /12° | 0.3 mm | 5 | |
| 17 Sept. | Moderate rain | 19° /12° | 6.4 mm | 5 | |
| 18 Sept. | Light rain shower | 18° /11° | 4.1 mm | 5 | |
| 19 Sept. | Light rain shower | 19° /11° | 7.1 mm | 5 | |
| 20 Sept. | Light rain shower | 19° /11° | 3.4 mm | 5 | |
| 21 Sept. | Light rain shower | 18° /11° | 1.6 mm | 5 | |
| 22 Sept. | Light rain shower | 17° /12° | 4.6 mm | 4 | |
| 23 Sept. | Patchy rain possible | 14° /12° | 2.5 mm | 3 | |
| 24 Sept. | Light drizzle | 16° /11° | 4.2 mm | 4 | |
| 25 Sept. | Patchy light drizzle | 15° /11° | 0.6 mm | 4 | |
| 26 Sept. | Light drizzle | 15° /10° | 13.8 mm | 4 | |
| 27 Sept. | Light rain shower | 14° /9° | 4 mm | 4 | |
| 28 Sept. | Patchy rain possible | 14° /10° | 1.5 mm | 4 | |
| 29 Sept. | Patchy rain possible | 14° /9° | 2.5 mm | 4 | |
| 30 Sept. | Light rain | 14° /10° | 12.5 mm | 4 | |
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Important Notice
Our weather forecast for Sefton 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 Sefton forecast closer to your planned date for the most up-to-date weather information.
Sefton in September - FAQ
What are the expected maximum and minimum temperatures in Sefton during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Sefton during September?
Moderate rainfall is anticipated in Sefton during September, with a total of 94.7 mm spread over approximately 20 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Sefton during September?
The average wind speed in Sefton during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Sefton
Explore the daily rainfall trends and prepare for Seftons September weather 💧
UV exposure in Sefton during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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