The temperatures in Dublin in September are usually low and can range between 11°C and 16°C.
You can expect about 3 to 8 days of rain in Dublin 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 Dublin in September 2025.
If you’re planning to visit Dublin in the near future, we highly recommend that you review the 14 day weather forecast for Dublin before you arrive.
Temperatures
16° / 11°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
89
mm
Sun Hours
9.1
Hrs
