Planning for the weather is a good way to make your trip to Nilaveli relaxing and enjoyable, especially when you’re splurging. The hottest months are usually April and March with an average temp of 82°F, while the coldest months are January and February with an average of 78°F. The rainiest months in Nilaveli are November, October, December, and April, with each month seeing an average of 9 inches of rainfall.