Ladakh’s short tourist season (July to early September) typically sees mild to hot T-shirt weather by day and pleasant, occasionally chilly nights. Early July is great for flowers but August is better for crossing high passes, which can still be snowbound into mid-July. On higher treks night-time temperatures can dip below 0°C even in midsummer. By September, snow is likely on higher ground although major passes usually stay open until October. Access roads close entirely in winter (often from November) when temperatures can fall below -20°C and most tourist infrastructure shuts down.
Ladakh enjoys sunshine an average of 300 days a year, but storms can brew suddenly. Although rare, heavy rain can cause devastating mudslides.