There's nothing like an all-inclusive holiday in Soltau to rejuvenate you, especially when you know what kind of weather to expect. Here's some information to help you decide when to book: The hottest months are usually August and July, with an average temperature of 17°C, while the coldest months are January and February, with an average of 3°C. April and February are the driest months, while July and August are the rainiest months.