Other facts from our historical weather data: Which is the warmest month in Quetzaltenango? April has an average maximum temperature of 23°C (73°F) and is the warmest month of the year. Which is the coldest month in Quetzaltenango? The coldest month is January with an average maximum temperature of 22°C (72°F). Which is the wettest month in Quetzaltenango? May tops the wettest month list with 461mm (18.1 in) of rainfall. Which is the driest month in Quetzaltenango? January is the driest month with 34mm (1.3 in) of precipitation. Which is the sunniest month in Quetzaltenango? March is the sunniest month with an average of 249 hours of sunshine. 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.