You can plan your beach trip with a look at year-round temperatures in Seekirchen am Wallersee: The hottest months are usually July and August, with an average temperature of 16°C, while the coldest months are January and February, with an average of 1°C. The snowiest months in Seekirchen am Wallersee are December, January, November and February, with each month seeing an average of 13 cm of snowfall.