Other facts from our historical weather data: Which months have the greatest rainfall in Hella? Most rainfall (rainy season) is seen in January, February, March, September, November and December. Which is the warmest month in Hella? July has an average maximum temperature of 16°C (61°F) and is the warmest month of the year. Which is the coldest month in Hella? The coldest month is February with an average maximum temperature of 4°C (39°F). Which is the wettest month in Hella? February tops the wettest month list with 180mm (7.1 in) of rainfall. Which is the driest month in Hella? June is the driest month with 97mm (3.8 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.