If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Huizhou: The hottest months are usually July and August, with an average temperature of 28°C, while the coldest months are January and December, with an average of 17°C. The rainiest months in Huizhou are June, May, August and July, with each month seeing an average of 315 mm of rainfall.