Planning for the weather is an important factor for making your trip to Xul-Ha a success, especially when you're splurging. The hottest months are usually May and August, with an average temperature of 27°C, while the coldest months are January and December, with an average of 24°C. The rainiest months in Xul-Ha are June, September, October and August, with each month seeing an average of 204 mm of rainfall.