Other facts from our historical weather data: Which is the warmest month in Thurles? July has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Thurles? The coldest month is February with an average maximum temperature of 9°C (48°F). Which is the wettest month in Thurles? December tops the wettest month list with 92mm (3.6 in) of rainfall. Which is the driest month in Thurles? March is the driest month with 72mm (2.8 in) of precipitation. Which is the sunniest month in Thurles? 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.