Other facts from our historical weather data: Which is the warmest month in Chincha Alta? March has an average maximum temperature of 26°C (79°F) and is the warmest month of the year. Which is the coldest month in Chincha Alta? The coldest month is August with an average maximum temperature of 22°C (72°F). Which is the wettest month in Chincha Alta? February tops the wettest month list with 54mm (2.1 in) of rainfall. Which is the driest month in Chincha Alta? August is the driest month with 1mm (0 in) of precipitation. 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.