Other facts from our historical weather data: Which is the hottest month in Cachoeira? February has an average maximum temperature of 32°C (90°F) and is the hottest month of the year. Which is the coolest month in Cachoeira? The coolest month is August with an average maximum temperature of 27°C (81°F). Which is the wettest month in Cachoeira? June tops the wettest month list with 117mm (4.6 in) of rainfall. Which is the driest month in Cachoeira? October is the driest month with 59mm (2.3 in) of precipitation. Which is the sunniest month in Cachoeira? 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.