There's nothing like an all-inclusive holiday in Maria Alm am Steinernen Meer to refresh you, especially when you know what to expect from the elements. Here's some information to help you decide when to book: The hottest months are usually August and July, with an average temperature of 13°C, while the coldest months are January and February, with an average of -4°C. February and November are the driest months, while May and June are the rainiest months.