Taking into account the local weather in Hasliberg Wasserwendi can help you maximize your time at the pool during your trip. The hottest months are usually July and August with an average temp of 58 °F, while the coldest months are January and February with an average of 30°F. The rainiest months in Hasliberg Wasserwendi are June, August, May, and July, with each month seeing an average of 9 inches of rainfall.