Other facts from our historical weather data: Which months have the greatest rainfall in Dunfanaghy? Most rainfall (rainy season) is seen in January, October, November and December. Which is the warmest month in Dunfanaghy? August has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Dunfanaghy? The coldest month is February with an average maximum temperature of 9°C (48°F). Which is the wettest month in Dunfanaghy? December tops the wettest month list with 179mm (7 in) of rainfall. Which is the driest month in Dunfanaghy? May is the driest month with 98mm (3.9 in) of precipitation. Which is the sunniest month in Dunfanaghy? May is the sunniest month with an average of 203 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.