Other facts from our historical weather data: Which months have the greatest rainfall in Doolin? Most rainfall (rainy season) is seen in January, October, November and December. Which is the warmest month in Doolin? August has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Doolin? The coldest month is February with an average maximum temperature of 10°C (50°F). Which is the wettest month in Doolin? November tops the wettest month list with 177mm (7 in) of rainfall. Which is the driest month in Doolin? April is the driest month with 98mm (3.9 in) of precipitation. Which is the sunniest month in Doolin? May is the sunniest month with an average of 182 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.