The temperatures in Southend-on-Sea in September are usually low and can range between 12°C and 19°C.
You can expect about 3 to 8 days of rain in Southend-on-Sea during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Southend-on-Sea in September 2025.
If you’re planning to visit Southend-on-Sea in the near future, we highly recommend that you review the 14 day weather forecast for Southend-on-Sea before you arrive.
Temperatures
19° / 12°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
41
mm
Sun Hours
9.1
Hrs
