The temperatures in Surrey 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 Surrey 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 Surrey in September 2025.
If you’re planning to visit Surrey in the near future, we highly recommend that you review the 14 day weather forecast for Surrey before you arrive.
Temperatures
19° / 12°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
144
mm
Sun Hours
10.0
Hrs
