Taking the local weather in Alotau 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 February, with an average temperature of 27°C, while the coldest months are August and July, with an average of 25°C. The rainiest months in Alotau are January, February, March and December, with each month seeing an average of 371 mm of rainfall.