Taking the local weather in Ellison Bay 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 17°C, while the coldest months are February and January, with an average of -3°C. The snowiest months in Ellison Bay are January, March, April and February, with each month seeing an average of 22 cm of snowfall.