Weather will likely play an important role when you plan your trip to Yuan, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and March, with an average temperature of 27°C, while the coldest months are January and December, with an average of 22°C. The rainiest months in Yuan are August, July, September and May, with each month seeing an average of 283 mm of rainfall.