Taking the local weather in Namisuni 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 February and March, with an average temperature of 22°C, while the coldest months are June and July, with an average of 20°C. The rainiest months in Namisuni are April, May, March and November, with each month seeing an average of 352 mm of rainfall.