Planning for the weather is a good way to make your trip to Hienghene relaxing and enjoyable, especially when you're splurging. The hottest months are usually February and January, with an average temperature of 25°C, while the coldest months are August and September, with an average of 21°C. The rainiest months in Hienghene are March, January, February and April, with each month seeing an average of 182 mm of rainfall.