Taking the local weather in Kikai Island 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 28°C, while the coldest months are January and February, with an average of 17°C. The rainiest months in Kikai Island are June, May, August and September, with each month seeing an average of 310 mm of rainfall.