Hammerfest: during the year, the average temperature throughout the year is around 3°C. The coldest period of the year is in the month of February where the temperature can drop to -2°C. The hottest month of the year is instead in July where the maximum temperature can reach 12°C. The water temperature, during the hottest months can reach an average of 10°C, during the coldest months it can drop to 4°C.