Planning for the weather is a good way to make your trip to Zhanjiang relaxing and enjoyable, especially when you’re splurging. The hottest months are usually June and July, with an average temperature of 29°C, while the coldest months are January and December, with an average of 20°C. The rainiest months in Zhanjiang are August, July, June and September, with each month seeing an average of 246 mm of rainfall.