Southend-on-Sea
September
Weather in Southend-on-Sea for September 2025
Your guide to Southend-on-Sea weather in September - trends and predictions
In general, the average temperature in Southend-on-Sea at the beginning of September is 20.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 17.4 °C by the end of September.
Southend-on-Sea sees moderate rainfall in September, averaging 9 rainy days.
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21
Dry days
9
Rainy days
0
Snow days
20°/15°
Temperatures
23 km/h
Avg max wind
74 %
Avg humidity
Southend-on-Sea in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  21° | 3 20° | 4  19° | 5 20° | 6 22° | 7  21° |
| 8 22° | 9 20° | 10 23° | 11  19° | 12 17° | 13 17° | 14 19° |
| 15 21° | 16 20° | 17 19° | 18  20° | 19  19° | 20  19° | 21 19° |
| 22 18° | 23 18° | 24 18° | 25 19° | 26 19° | 27 17° | 28 16° |
| 29 16° | 30 17° |
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Temperatures trend during September in Southend-on-Sea
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. | Overcast | 20° /16° | 4.5 mm | 5 | |
| 2 Sept. | Light rain shower | 21° /16° | 0.3 mm | 5 | |
| 3 Sept. | Overcast | 20° /15° | 0.9 mm | 5 | |
| 4 Sept. | Sunny | 19° /15° | 2.3 mm | 5 | |
| 5 Sept. | Overcast | 20° /16° | 2.9 mm | 5 | |
| 6 Sept. | Sunny | 22° /17° | 1.2 mm | 6 | |
| 7 Sept. | Partly cloudy | 21° /16° | 6.9 mm | 6 | |
| 8 Sept. | Overcast | 22° /16° | 2.3 mm | 5 | |
| 9 Sept. | Sunny | 20° /15° | 0.2 mm | 5 | |
| 10 Sept. | Partly cloudy | 23° /15° | 2 mm | 6 | |
| 11 Sept. | Cloudy | 19° /13° | 0.2 mm | 4 | |
| 12 Sept. | Overcast | 17° /12° | 0.4 mm | 4 | |
| 13 Sept. | Overcast | 17° /11° | 0 mm | 5 | |
| 14 Sept. | Partly cloudy | 19° /11° | 0 mm | 6 | |
| 15 Sept. | Sunny | 21° /13° | 0 mm | 6 | |
| 16 Sept. | Sunny | 20° /14° | 0 mm | 6 | |
| 17 Sept. | Patchy rain possible | 19° /14° | 0.1 mm | 4 | |
| 18 Sept. | Moderate or heavy rain with thunder | 20° /14° | 2.1 mm | 5 | |
| 19 Sept. | Light drizzle | 19° /15° | 1.3 mm | 5 | |
| 20 Sept. | Moderate rain | 19° /15° | 12.4 mm | 4 | |
| 21 Sept. | Patchy light drizzle | 19° /14° | 4.4 mm | 4 | |
| 22 Sept. | Light rain shower | 18° /14° | 12.9 mm | 4 | |
| 23 Sept. | Patchy rain possible | 18° /12° | 1.6 mm | 4 | |
| 24 Sept. | Overcast | 18° /13° | 0.5 mm | 4 | |
| 25 Sept. | Patchy rain possible | 19° /13° | 7.1 mm | 5 | |
| 26 Sept. | Light rain | 19° /13° | 8.7 mm | 5 | |
| 27 Sept. | Cloudy | 17° /11° | 3.9 mm | 4 | |
| 28 Sept. | Overcast | 16° /9° | 0 mm | 4 | |
| 29 Sept. | Light rain | 16° /12° | 1.3 mm | 4 | |
| 30 Sept. | Cloudy | 17° /11° | 10.2 mm | 4 | |
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Important Notice
Our weather forecast for Southend-on-Sea 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 Southend-on-Sea forecast closer to your planned date for the most up-to-date weather information.
Southend-on-Sea in September - FAQ
What are the expected maximum and minimum temperatures in Southend-on-Sea during September?
During September, expect a variety of temperatures with highs around 20° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Southend-on-Sea during September?
In September, Southend-on-Sea can expect light to moderate rainfall, totaling 47.7 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Southend-on-Sea during September?
The average wind speed in Southend-on-Sea during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
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