Planning for the weather is a good way to make your trip to Bella Bella relaxing and enjoyable, especially when you're splurging. The hottest months are usually August and July, with an average temperature of 14°C, while the coldest months are February and December, with an average of 2°C. The rainiest months in Bella Bella are November, October, January and December, with each month seeing an average of 432 mm of rainfall.