Tibet Travel Tips
The best time to trek in Tibet is in Spring and Autumn, from April to May and September to October. Throughout this period there's no rainfall that quits your hiking and it's not too hot to stroll in the wildness. Also, Summer is a good time for trekking in Tibet due to suitable temperature and sufficient oxygen content.
If you're going to visit Tibet in winter, you need to know the temperature in some places of Tibet is not as cold as your imagination due to intensive sunlight. During this period, most of the scenic spots are free, and the cost of accommodation and transportation is much lower so it's cost-effective.