Weather is only one factor, but it can really affect your travel plans, especially if you're planning an extended stay in Ofu Island. The hottest months are usually March and April, with an average temperature of 28°C, while the coldest months are August and July, with an average of 27°C. The rainiest months in Ofu Island are February, January, December and November, with each month seeing an average of 339 mm of rainfall.