Weather will likely play an important role when you plan your trip to Shimajiri, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 28°C, while the coldest months are January and February, with an average of 19°C. The rainiest months in Shimajiri are June, May, August and October, with each month seeing an average of 293 mm of rainfall.