Other facts from our historical weather data: Which months have the greatest rainfall in Xalapa? Most rainfall (rainy season) is seen in April, June, August, September and October. Which is the warmest month in Xalapa? May has an average maximum temperature of 26°C (79°F) and is the warmest month of the year. Which is the coldest month in Xalapa? The coldest month is January with an average maximum temperature of 20°C (68°F). Which is the wettest month in Xalapa? September tops the wettest month list with 232mm (9.1 in) of rainfall. Which is the driest month in Xalapa? December is the driest month with 53mm (2.1 in) of precipitation. Which is the sunniest month in Xalapa? July is the sunniest month with an average of 216 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.