The short answer. Summer in Spiti runs from about mid-June to late September, and it is the only season the circuit closes into a loop: eight days out of Manali, in through Kinnaur and back over Kunzum La. The valley is dry and bright, every village is reachable, and nights in Kaza drop to around freezing rather than −20 °C. The one thing to plan around is the monsoon on the Kinnaur approach in mid-July and August.
What changes when the snow goes
The winter trip is about cold and emptiness. The summer trip is about colour and reach. Kinnaur in June and July is apple country in full leaf, the Baspa valley above Sangla is as green as anywhere in the Himalaya, and where winter gives you a white monochrome, summer gives you the strips of barley and pea fields that the villages live on, set against bare ochre mountains.
Practically, three things change. The side roads above Kaza are open, so Komic, Hikkim and Langza are ordinary drives instead of snow days. Stays that shut for the winter are open again, so there is a real choice of where to sleep. And the nights are survivable in a fleece rather than in everything you own.
The eight days
Summer is the only season the circuit closes into a loop, and that is the reason to come. You leave Manali going one way and come back the other, over Kunzum La, without driving a kilometre twice.
- Day 1 — Manali. Briefing, stickering and the car check, and the drive briefing for everyone at the wheel.
- Day 2 — Manali to Jibhi. Over towards the Tirthan valley and down into deodar forest. The gentle first day that gets the convoy working together.
- Day 3 — Jibhi to Kalpa. Across to the Sutlej and up into Kinnaur, to Kalpa under the Kinner Kailash range. In June the orchards are in full leaf the whole way.
- Day 4 — Kalpa to Khab, Nako and Tabo. East on the Hindustan–Tibet road past the confluence at Khab and Nako's lake. This is the drive where you watch the Himalaya turn into Tibet.
- Day 5 — Tabo, Dhankar, Chicham, Key and Kaza. Dhankar's fort-monastery on its cliff, the high bridge at Chicham, and Key stacked up its hill before Kaza.
- Day 6 — the high villages. Komic at 4,587 m, the post office at Hikkim and the fossil beds at Langza, back to Kaza. In winter this is the hard day; in summer it is a long easy one.
- Day 7 — Kaza to Sissu, over Kunzum La. North out of Spiti over the pass at 4,590 m and down the Chandra valley into Lahaul. The side trip to Chandratal is on this road.
- Day 8 — Sissu to Manali. Through the Atal Tunnel and home, and a farewell dinner.
The winter version is a different trip on a different road, out and back from Shimla in seven days: Shimla to Spiti by road in winter.
What summer opens up
- Chandratal. The lake at about 4,300 metres, over on the Kunzum La side. Reachable only while that pass is open — roughly June to October.
- Kunzum La and the Manali road, which makes the in-one-way, out-the-other loop possible. See Manali to Spiti by road.
- The Pin valley, and the walk-in trails that snow closes.
- Village life outdoors. Summer is the working season: sowing, grazing, the long evenings when everyone is out. In January most of it happens indoors, around a stove.
The monsoon, and how to plan around it
Spiti barely gets the monsoon — it sits in the rain shadow, and that is why it looks the way it does. The Kinnaur approach is another matter. The Sutlej road is cut into steep, loose country, and a heavy spell in mid-July or August can bring the hillside down onto it. Closures are usually hours rather than days, and the road crews here are fast, but it is the one risk in the summer season worth naming.
If your dates cannot move, aim for mid-June or September. September is our own pick: the rain has pulled back, the air is clean, the light is low and long, and there is far less traffic than in June.
Altitude is the same in July as in January
This is the one thing summer does not make easier. Kaza is at about 3,800 metres and Komic at 4,587 whatever the weather, and warm sun makes people careless — walking fast, skipping water, going straight up on arrival. The Shimla approach still does the work for you by climbing over three days, and a medic still travels with the convoy and checks oxygen and pulse morning and evening. Drink more than you feel like, and take the first day slowly.
What to pack for summer
Lighter than winter, but not light. Days in the valley can be genuinely warm and the same night can touch freezing, and at 4,500 metres the sun will burn you through cloud.
- Layers: a fleece or light down for evenings, a windproof shell, a warm hat. Nights in Kaza are cold in any month.
- Serious sun protection — high-SPF cream, lip balm, sunglasses and a brimmed hat. This is not optional at this height.
- Shoes you can walk a village and a riverbed in.
- Your documents: photo ID or passport, six passport photographs for the permits, and your insurance certificate.
- Any prescription medicine in its original packaging, and motion-sickness tablets if hill roads bother you.
The full winter list, with the reasons for each item, is in what to pack for a winter Spiti expedition — the documents and personal sections apply in both seasons.
Who summer suits
A first trip to Spiti. Anyone travelling with children or with older parents. Photographers who want colour and long light rather than snow. Anyone whose plan includes Chandratal or the Manali crossing. And anyone who would rather spend the evenings outside than around a stove — which is a fair preference, and the one honest reason to choose June over January.
Questions we are asked
What is Spiti like in summer?
Dry, bright and fully open. Kinnaur is green with orchards and barley, the side roads above Kaza are clear so Komic, Hikkim and Langza are easy drives, and nights in Kaza fall to around freezing rather than the −20 °C of midwinter.
How many days do you need for Spiti in summer?
Our summer expedition is eight days from Manali, which is what the full loop takes without rushing it: in through Jibhi and Kinnaur, two nights in Kaza for the high villages, and out over Kunzum La.
Does it rain in Spiti during the monsoon?
Very little. Spiti lies in the rain shadow of the main range. The monsoon matters for the approach through Kinnaur, where heavy rain in mid-July and August can bring landslides down onto the Sutlej road.
What are the best summer months for Spiti?
Mid-June and September. June has everything freshly open including Kunzum La and Chandratal; September has clean air, long low light, the harvest on and far fewer vehicles.
What should I pack for Spiti in summer?
Layers for cold nights, a windproof shell, strong sun protection for 4,500 metres, walking shoes, photo ID or passport with two passport photographs for the permits, and your insurance certificate.
The summer circuit
Six days from Shimla through Kinnaur into Spiti between June and September, with a local driver-guide, a medic and a mechanic, and every permit and night arranged.