Heavy woolens for winter. Shorts for hiking and walking around town are fine. Out of respect, please don't wear shorts in public buildings or monasteries. Have a pair of long pants or longer skirt for these locations. Days are normally warm.
Nights can be quite chilly.
In winter, the temperature is below freezing point. Monsoon shower in summer with heavy rains in July and August. For up to date conditions, check our weather link. They may decrease ventilation, intensify hypoxemia and make symptoms worse. Drink plenty of fluids.