Planning for the weather is a good way to make your trip to Poza Rica relaxing and enjoyable, especially when you're splurging. The hottest months are usually May and June with an average temp of 80°F, while the coldest months are January and February with an average of 68°F. The rainiest months in Poza Rica are September, October, August, and June, with each month seeing an average of 9 inches of rainfall.