Taking the local weather in Sobetsu 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 19°C, while the coldest months are February and January, with an average of -2°C. The snowiest months in Sobetsu are January, February, March and December, with each month seeing an average of 77 cm of snowfall.