The temperatures in Devon in September are usually low and can range between 13°C and 17°C.
You can expect about 3 to 8 days of rain in Devon 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 Devon in September 2025.
If you’re planning to visit Devon in the near future, we highly recommend that you review the 14 day weather forecast for Devon before you arrive.
Temperatures
17° / 13°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
68
mm
Sun Hours
9.5
Hrs
