Weather is probably a major factor when you plan your trip to Deqin, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and July, with an average temperature of 15°C, while the coldest months are January and February, with an average of 2°C. The rainiest months in Deqin are July, August, June and September, with each month seeing an average of 210 mm of rainfall.