Planning for the weather is a good way to make your trip to Ruisui relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and August, with an average temperature of 25°C, while the coldest months are January and February, with an average of 17°C. The rainiest months in Ruisui are May, August, June and September, with each month seeing an average of 458 mm of rainfall.