Other facts from our historical weather data: Which is the hottest month in La Vega? August has an average maximum temperature of 32°C (90°F) and is the hottest month of the year. Which is the coolest month in La Vega? The coolest month is January with an average maximum temperature of 27°C (81°F). Which is the wettest month in La Vega? May tops the wettest month list with 134mm (5.3 in) of rainfall. Which is the driest month in La Vega? July is the driest month with 55mm (2.2 in) of precipitation. Which is the sunniest month in La Vega? August is the sunniest month with an average of 253 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.