Planning for the weather is an important factor for making your trip to Nan'ao County a success, especially when you're splurging. The hottest months are usually July and August with an average temp of 82°F, while the coldest months are January and February with an average of 62°F. The rainiest months in Nan'ao County are June, August, May, and July, with each month seeing an average of 11 inches of rainfall.