There's nothing like an all-inclusive holiday in Warmensteinach to revive you, especially when you know what to expect from the elements. Here's some information to help you choose when to book: 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. April and March are the driest months, while August and December are the rainiest months.