The temperatures in Anglesey in September are usually low and can range between 13°C and 15°C.
You can expect about 3 to 8 days of rain in Anglesey 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 Anglesey in September 2025.
If you’re planning to visit Anglesey in the near future, we highly recommend that you review the 14 day weather forecast for Anglesey before you arrive.
Temperatures
15° / 13°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
92
mm
Sun Hours
8.6
Hrs
