Weather will likely play an important role when you plan your trip to Jumla, 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 14°C, while the coldest months are January and February, with an average of 1°C. The rainiest months in Jumla are July, August, June and September, with each month seeing an average of 405 mm of rainfall.