The temperatures in Douarnenez in August are comfortable with low of 14°C and and high up to 21°C.
You can expect about 3 to 8 days of rain in Douarnenez 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 Douarnenez in August 2026.
If you’re planning to visit Douarnenez in the near future, we highly recommend that you review the 14 day weather forecast for Douarnenez before you arrive.
Temperatures
21° / 14°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
85
mm
Sun Hours
9.7
Hrs
