Planning for the weather is a good way to make your trip to Daegu relaxing and enjoyable, especially when you’re splurging. The hottest months are usually August and July, with an average temperature of 23°C, while the coldest months are January and December, with an average of 2°C. The rainiest months in Daegu are July, August, September and June, with each month seeing an average of 193 mm of rainfall.