Planning for the weather is a good way to make your trip to Kotu relaxing and enjoyable, especially when you’re splurging. The hottest months are usually November and October, with an average temperature of 27°C, while the coldest months are February and March, with an average of 24°C. The rainiest months in Kotu are August, September, July and October, with each month seeing an average of 202 mm of rainfall.