When you're dreaming of a escape to Port Heiden, year-round temperatures and rainfall may be important factors to consider. The hottest months are usually August and July, with an average temperature of 10°C, while the coldest months are January and March, with an average of -3°C. The snowiest months in Port Heiden are December, February, April and March, with each month seeing an average of 84 cm of snowfall.