Planning for the weather is a good way to make your trip to Katong relaxing and enjoyable, especially when you’re splurging. The hottest months are usually May and April with an average temp of 83°F, while the coldest months are January and February with an average of 80°F. The rainiest months in Katong are November, December, April, and October, with each month seeing an average of 13 inches of rainfall.