Weather in Southend-on-Sea for September 2025
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Until now, September 2025 in Southend-on-Sea is slightly cooler than the historical average by -0.8 °C.
Expect cooler weather in the next days in Southend-on-Sea with the forecast suggesting a temperature of 16.9 °C, lower than the historical average.
In general, the average temperature in Southend-on-Sea at the beginning of September is 20.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15 °C by the end of September.
Southend-on-Sea in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 90.7 mm.
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Southend-on-Sea Weather September
Temperatures trend during September in Southend-on-Sea
September weather in Southend-on-Sea day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 20° /15° | 3.4 mm | 5 | |
| 2 Sept. |  Light rain shower | 21° /15° | 1.3 mm | 5 | |
| 3 Sept. | Light rain shower | 21° /15° | 1.9 mm | 5 | |
| 4 Sept. | Light rain shower | 19° /15° | 2.3 mm | 5 | |
| 5 Sept. | Overcast | 20° /14° | 1.9 mm | 5 | |
| 6 Sept. |  Sunny | 22° /16° | 0.8 mm | 5 | |
| 7 Sept. |  Partly cloudy | 22° /16° | 4.9 mm | 5 | |
| 8 Sept. | Overcast | 22° /15° | 1.6 mm | 5 | |
| 9 Sept. | Patchy rain possible | 20° /14° | 0.1 mm | 5 | |
| 10 Sept. | Partly cloudy | 22° /15° | 1.5 mm | 5 | |
| 11 Sept. |  Cloudy | 19° /13° | 0.7 mm | 4 | |
| 12 Sept. | Overcast | 17° /12° | 0.4 mm | 4 | |
| 13 Sept. | Overcast | 17° /11° | 1.5 mm | 4 | |
| 14 Sept. | Partly cloudy | 19° /11° | 0.7 mm | 5 | |
| 15 Sept. | Patchy rain possible | 19° /14° | 0.3 mm | 0.9 | |
| 16 Sept. | Partly cloudy | 19° /13° | 0 mm | 0.8 | |
| 17 Sept. |  Moderate rain | 18° /13° | 5.3 mm | 0.1 | |
| 18 Sept. | Cloudy | 22° /18° | 0.1 mm | 0.9 | |
| 19 Sept. | Partly cloudy | 23° /17° | 0 mm | 0.9 | |
| 20 Sept. | Partly cloudy | 19° /17° | 0.1 mm | 5 | |
| 21 Sept. | Patchy rain possible | 14° /11° | 0.2 mm | 3 | |
| 22 Sept. | Patchy rain possible | 14° /11° | 0.4 mm | 3 | |
| 23 Sept. | Partly cloudy | 17° /13° | 0 mm | 4 | |
| 24 Sept. | Moderate rain | 15° /14° | 7.1 mm | 3 | |
| 25 Sept. | Moderate rain | 13° /12° | 6.2 mm | 3 | |
| 26 Sept. | Patchy rain possible | 14° /12° | 0.1 mm | 3 | |
| 27 Sept. | Patchy rain possible | 15° /11° | 0.3 mm | 3 | |
| 28 Sept. | Patchy rain possible | 15° /10° | 0.4 mm | 3 | |
| 29 Sept. |  Light rain | 16° /12° | 1.3 mm | 4 | |
| 30 Sept. | Cloudy | 17° /11° | 10.2 mm | 4 | |
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Southend-on-Sea in September - FAQ
September rainfall patterns in Southend-on-Sea
UV exposure in Southend-on-Sea during September
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Where is Southend-on-Sea?Get accurate weather forecasts for Southend-on-Sea, located at latitude 51.538 and longitude 0.714. Stay updated with localized weather information tailored for Southend-on-Sea.