Other facts from our historical weather data: Which is the warmest month in Gualaceo? November has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Gualaceo? The coldest month is August with an average maximum temperature of 14°C (57°F). Which is the wettest month in Gualaceo? February tops the wettest month list with 249mm (9.8 in) of rainfall. Which is the driest month in Gualaceo? September is the driest month with 85mm (3.3 in) of precipitation. Which is the sunniest month in Gualaceo? July is the sunniest month with an average of 187 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.