Planning for the weather is a good way to make your trip to Bellwald relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August with an average temp of 47°F, while the coldest months are January and February with an average of 18°F. The rainiest months in Bellwald are July, August, June, and May, with each month seeing an average of 7 inches of rainfall.