If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Ninh Hoa: The hottest months are usually June and May, with an average temperature of 28°C, while the coldest months are January and February, with an average of 24°C. The rainiest months in Ninh Hoa are November, October, December and September, with each month seeing an average of 259 mm of rainfall.