Planning for the weather is a good way to make your trip to Catemaco relaxing and enjoyable, especially when you're splurging. The hottest months are usually May and April, with an average temperature of 26°C, while the coldest months are January and February, with an average of 21°C. The rainiest months in Catemaco are October, September, November and August, with each month seeing an average of 358 mm of rainfall.