Weather will likely play an important role when you plan your trip to Uehara, but bear in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually July and August, with an average temperature of 29°C, while the coldest months are January and February, with an average of 20°C. The rainiest months in Uehara are August, September, May and June, with each month seeing an average of 263 mm of rainfall.