Planning for the weather is an important factor for making your trip to Heyuan a success, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 27°C, while the coldest months are January and December, with an average of 15°C. The rainiest months in Heyuan are June, May, August and July, with each month seeing an average of 296 mm of rainfall.