Other facts from our historical weather data: Which is the warmest month in Omarama? February has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Omarama? The coldest month is July with an average maximum temperature of 5°C (41°F). Which is the wettest month in Omarama? December tops the wettest month list with 106mm (4.2 in) of rainfall. Which is the driest month in Omarama? August is the driest month with 69mm (2.7 in) of precipitation. Which is the sunniest month in Omarama? January is the sunniest month with an average of 231 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.