Planning for the weather is an important factor for making your trip to Tongjiang County a success, especially when you're splurging. The hottest months are usually August and July, with an average temperature of 25°C, while the coldest months are January and December, with an average of 8°C. The rainiest months in Tongjiang County are July, September, August and June, with each month seeing an average of 241 mm of rainfall.