Weather will likely play an important role when you plan your trip to San Juan La Laguna, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and February, with an average temperature of 24°C, while the coldest months are December and January, with an average of 23°C. The rainiest months in San Juan La Laguna are September, May, June and October, with each month seeing an average of 570 mm of rainfall.