Planning for the weather is a good way to make your trip to Nakanojo relaxing and enjoyable, especially when you’re splurging. The hottest months are usually August and July with an average temp of 71°F, while the coldest months are January and February with an average of 35°F. The rainiest months in Nakanojo are July, September, June, and October, with each month seeing an average of 11 inches of rainfall.