Eight weeks a year the high passes are open. You are inside them now.
The high Himalaya runs on a calendar that has nothing to do with convenience. The passes into Ladakh and Spiti clear somewhere in late May or June depending on the winter, and start closing again from late September. August sits in the back half of that window — the roads are open, the rain shadow means the monsoon mostly does not reach you, and the light is the best it gets.
It is also the one part of India where the monsoon is irrelevant. While Mumbai is underwater, Leh is dry, cold at night and cloudless.
Leh is at about 3,500m and you can fly into it from Delhi in ninety minutes. That is the trap. Arriving by air from sea level and doing anything on day one is how most visitors lose two or three days of a short trip to headaches and nausea.
Give it 48 hours of doing almost nothing before you go higher or walk far. If you have the time, the road up through Manali does the acclimatisation for you and is one of the great drives anywhere. Khardung La and Chang La are both well over 5,000m — they are a stop, not a hike.
Anyone over sixty, or with a cardiac or respiratory history, should clear the trip with a doctor first. This is not a formality at these elevations.
August brackets itself with two of the few dates that genuinely move the whole country. Raksha Bandhan falls on 9 August this year, and it is the single biggest reason NRI siblings post things to India all month — rakhis need to be in the post a good two to three weeks ahead from the US or the UK, and most people leave it too late.
Independence Day on the 15th is a national holiday. Government offices, banks and most businesses shut, which matters if your trip involves paperwork — PAN, Aadhaar, property registration, bank KYC. Plan around it rather than into it.
Permits: Indian nationals and OCI holders need an Inner Line Permit for several areas around Ladakh including Nubra, Pangong and Tso Moriri. It is straightforward and available online or in Leh, but it is per-area and checked at posts.
Connectivity: only postpaid Indian SIMs work in Ladakh. Prepaid tourist SIMs from Delhi do not, and nor does most international roaming. If you are going to be out of contact for a week, tell someone before rather than after.
Cash: ATMs in Leh run dry in peak season and much of the Nubra and Pangong circuit takes cash only. Draw what you need in Leh. And carry an Indian rupee card rather than leaning on a foreign one — card acceptance thins out fast past Leh, and where it works it carries the usual foreign-card spread.