Other facts from our historical weather data: Which is the warmest month in Valença? March has an average maximum temperature of 31°C (88°F) and is the warmest month of the year. Which is the coldest month in Valença? The coldest month is August with an average maximum temperature of 27°C (81°F). Which is the wettest month in Valença? June tops the wettest month list with 153mm (6 in) of rainfall. Which is the driest month in Valença? December is the driest month with 87mm (3.4 in) of precipitation. Which is the sunniest month in Valença? January is the sunniest month with an average of 246 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.