Taking the local weather in Hønefoss into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually July and June, with an average temperature of 14°C, while the coldest months are January and February, with an average of -5°C. The snowiest months in Hønefoss are January, December, February and October, with each month seeing an average of 43 cm of snowfall.