Planning for the weather is an important factor for making your trip to Tuxtla Gutierrez a success, especially when you're splurging. The hottest months are usually April and May, with an average temperature of 25°C, while the coldest months are January and December, with an average of 21°C. The rainiest months in Tuxtla Gutierrez are September, August, June and July, with each month seeing an average of 266 mm of rainfall.