Planning for the weather is a good way to make your trip to Dechang County relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 19°C, while the coldest months are January and December, with an average of 8°C. The rainiest months in Dechang County are June, July, August and September, with each month seeing an average of 244 mm of rainfall.