Planning for the weather is a good way to make your trip to Ambanja relaxing and enjoyable, especially when you're splurging. The hottest months are usually December and March, with an average temperature of 27°C, while the coldest months are July and August, with an average of 25°C. The rainiest months in Ambanja are January, February, March and December, with each month seeing an average of 484 mm of rainfall.