Other facts from our historical weather data: Which months have the greatest rainfall in Achumani? Most rainfall (rainy season) is seen in January, February and December. Which is the warmest month in Achumani? November has an average maximum temperature of 16°C (61°F) and is the warmest month of the year. Which is the coldest month in Achumani? The coldest month is July with an average maximum temperature of 14°C (57°F). Which is the wettest month in Achumani? January tops the wettest month list with 189mm (7.4 in) of rainfall. Which is the driest month in Achumani? June is the driest month with 43mm (1.7 in) of precipitation. Which is the sunniest month in Achumani? July is the sunniest month with an average of 279 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.