The temperatures in Derry in August are usually low and can range between 10°C and 17°C.
You can expect about 3 to 8 days of rain in Derry during the month of August. 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 Derry in August 2025.
If you’re planning to visit Derry in the near future, we highly recommend that you review the 14 day weather forecast for Derry before you arrive.
Temperatures
17° / 10°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
66
mm
Sun Hours
5.8
Hrs
