Taking the local weather in Yamato into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually August and July, with an average temperature of 27°C, while the coldest months are January and February, with an average of 16°C. The rainiest months in Yamato are June, May, August and September, with each month seeing an average of 323 mm of rainfall.