Taking the local weather in Sitka 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 August and July, with an average temperature of 12°C, while the coldest months are February and March, with an average of 0°C. The snowiest months in Sitka are February, December, January and March, with each month seeing an average of 25 cm of snowfall.