Planning for the weather is an important factor for making your trip to Tlacotalpan a success, especially when you're splurging. The hottest months are usually May and April, with an average temperature of 28°C, while the coldest months are January and February, with an average of 22°C. The rainiest months in Tlacotalpan are September, August, July and June, with each month seeing an average of 318 mm of rainfall.