Taking the local weather in Wallis 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 January and March, with an average temperature of 28°C, while the coldest months are August and September, with an average of 27°C. The rainiest months in Wallis Island are February, January, December and March, with each month seeing an average of 424 mm of rainfall.