Taking the local weather in Stráž pod Ralskem into account can help you maximise your time at the pool during your trip. The hottest months are usually July and August, with an average temperature of 17°C, while the coldest months are January and February, with an average of 1°C. The snowiest months in Stráž pod Ralskem are December, November, January and February, with each month seeing an average of 19 cm of snowfall.