Other facts from our historical weather data: Which is the warmest month in Olivença? February has an average maximum temperature of 30°C (86°F) and is the warmest month of the year. Which is the coldest month in Olivença? The coldest month is August with an average maximum temperature of 26°C (79°F). Which is the wettest month in Olivença? November tops the wettest month list with 152mm (6 in) of rainfall. Which is the driest month in Olivença? September is the driest month with 78mm (3.1 in) of precipitation. Which is the sunniest month in Olivença? March is the sunniest month with an average of 235 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.