Other facts from our historical weather data: Which is the warmest month in Étretat? August has an average maximum temperature of 21°C (70°F) and is the warmest month of the year. Which is the coldest month in Étretat? The coldest month is February with an average maximum temperature of 9°C (48°F). Which is the wettest month in Étretat? December tops the wettest month list with 143mm (5.6 in) of rainfall. Which is the driest month in Étretat? July is the driest month with 65mm (2.6 in) of precipitation. Which is the sunniest month in Étretat? July is the sunniest month with an average of 240 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.