The temperatures in Marennes in August are comfortable with low of 16°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Marennes 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 Marennes in August 2025.
If you’re planning to visit Marennes in the near future, we highly recommend that you review the 14 day weather forecast for Marennes before you arrive.
Temperatures
26° / 16°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
54
mm
Sun Hours
10.9
Hrs
