Weather will likely play an important role when you plan your trip to Ba Be, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and July, with an average temperature of 26°C, while the coldest months are January and December, with an average of 16°C. The rainiest months in Ba Be are June, August, July and May, with each month seeing an average of 414 mm of rainfall.