Planning for the weather is a good way to make your trip to Mossburn relaxing and enjoyable, especially when you're splurging. The hottest months are usually February and January, with an average temperature of 9°C, while the coldest months are July and August, with an average of 2°C. The rainiest months in Mossburn are October, September, May and January, with each month seeing an average of 344 mm of rainfall.