Other facts from our historical weather data: Which months have the greatest rainfall in Tikal? Most rainfall (rainy season) is seen in June and September. Which is the hottest month in Tikal? April has an average maximum temperature of 37°C (99°F) and is the hottest month of the year. Which is the coolest month in Tikal? The coolest month is January with an average maximum temperature of 30°C (86°F). Which is the wettest month in Tikal? September tops the wettest month list with 189mm (7.4 in) of rainfall. Which is the driest month in Tikal? February is the driest month with 26mm (1 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.