Sissu and Keylong weather: today, this week and through the year
Live temperature and a five-day forecast for Sissu, Keylong and Solang, when Lahaul gets snow, Keylong’s record temperatures by month, and what the road beyond the Atal Tunnel is like in each season.
- ~3,120 m Sissu
- ~3,080 m Keylong
- Oct–Mar snow on the ground
- Live 3 places
Photo: UnpetitproleX, CC BY-SA 4.0
Updated November 2026 · HP Tourism registered travel agent · Reg. No. DTO-MND-11-243/2022 · certificates · हिंदी में: अटल टनल और सिस्सू का मौसम
Sissu (about 3,120 m) is the first village in Lahaul after the Atal Tunnel, about 40 km from Manali; Keylong (about 3,080 m), the district town, is 71 km from Manali through the tunnel. Both sit north of the Pir Panjal, so they are far colder than Manali and get heavy snow — the fields at Sissu are often white from October to March, even when Solang has none. Keylong’s IMD records run from about −30 °C (January) to 31.5 °C (August). May to September is the comfortable season; December to February brings the deepest snow, and after fresh snow police allow only 4×4s with chains beyond Solang Nala, or close the road until it is cleared.
- ColdestDecember–February — Keylong record lows of −25 to −30 °C.
- SnowOctober to March; deepest December–February.
- WarmestJuly–August — Keylong record highs above 31 °C.
- After snowBeyond Solang Nala only 4×4s with chains, or road closed.
- PermitsNone for the tunnel or Sissu; online permit only for Rohtang Pass.
Sissu, Keylong and Solang weather today
Sissu (3,120 m) and Keylong (3,080 m) in Lahaul, and Solang (2,480 m) on the Manali side of the tunnel — current temperature and the next days’ high, low, rain and snow.
Forecast data: MET Norway (CC BY 4.0), refreshed about once a day — last update —.
Lahaul weather by month (Sissu and Keylong)
There are no published IMD average temperatures for Sissu, and Keylong’s station publishes only record extremes. The table gives those Keylong records (1961 onwards) with what each month is like on the ground. Expect Sissu to behave much like Keylong — both are around 3,100 m in the Chandra–Bhaga valleys.
| Month | Keylong record high / low | What it is like | Road from Manali |
|---|---|---|---|
| January | 6.8° / −30 °C | Deep snow, frozen streams | Often 4×4-only or closed after snow |
| February | 10.0° / −28 °C | Heavy snow spells | As January |
| March | 13.9° / −20 °C | Late snow, very cold nights | Clearance after spells |
| April | 23.1° / −15 °C | Snow melting, slush | Mostly open; slippery |
| May | 25.7° / −7 °C | Cool, snow walls by the road | Open |
| June | 30.8° / −5 °C | Pleasant, green | Open; Lahaul–Leh road trips |
| July | 31.4° / −1 °C | Warmest, wildflowers | Open |
| August | 31.5° / −2 °C | Warm days, cool nights | Open |
| September | 26.3° / −4 °C | Clear and crisp | Open |
| October | 23.7° / −13 °C | First snow; cold nights | Open; first 4×4 days after snow |
| November | 16.2° / −21 °C | Dry cold, snow spells | Chains/4×4 after snow |
| December | 8.5° / −25 °C | Snowbound fields | Often 4×4-only or closed after snow |
Record extremes for Keylong (Kyelang), 1961 onwards, as listed on Wikipedia from IMD data — not monthly averages. Typical winter nights are well below freezing rather than at these record lows.
The Atal Tunnel road in winter: what to expect
The 9.02 km Atal Tunnel (opened 3 October 2020) runs under the Rohtang Pass from Dhundi, beyond Solang, to the Lahaul side near Sissu. On a clear day Manali to Sissu is about 40 km, roughly 1.5 hours; Manali to Keylong is 71 km (it was 116 km over Rohtang). Stopping or taking photos inside the tunnel is not allowed.
In winter the road has three states: open to all, 4×4 with chains only beyond Solang Nala after fresh snow, or closed until cleared after heavy snow; on snow days police may also fix timings. Start early — water on the road freezes again in the afternoon and the return queue builds up.
No permit is needed for the tunnel or Sissu; the online permit is only for the Rohtang Pass road. More on the trip: Atal Tunnel and Sissu snow trip and Rohtang permit and road status.
Sissu and Keylong in pictures
Sissu lake and waterfall, Keylong and the Bhaga valley — real photographs, each credited to its photographer.
Best time to visit Sissu and Keylong
Depending on what you are going for.
Snow day from Manali
Deepest snow at Sissu; check the 4×4 rule the evening before.
First snow
Clear days, road mostly open.
Thaw
Snow melting; slush and slippery patches.
Green Lahaul
Wildflowers, and road trips on to Leh or Spiti.
Families
Mildest weather; still cold at night.
Take care
Road may be closed until cleared.
Sissu trip: what the weather means for you
Clothing: Sissu is about 1,000 m higher than Manali — thermals, a down jacket, gloves and waterproof boots from October to April, and a warm layer even in summer evenings.
Nearby weather:Manali weather, Kullu weather, Leh weather and the live snow tracker.
Our Manali and Lahaul trips
Hotels, meals and a private car in one quote.
Planning Manali, Sissu or Lahaul?
Tell us your dates, where you are starting from and how many of you are travelling. We check the road status the evening before, book the right vehicle for the day, and send a written quote with hotels and a private car. Suzu Travels is a travel agent registered with HP Tourism, based in Bilaspur, Himachal Pradesh.
Sissu and Keylong weather: frequently asked questions
What is the weather in Sissu today?
The top of this page shows the current temperature and the next days’ forecast for Sissu, Keylong and Solang (MET Norway data).
When does it snow in Sissu?
From October to March; December to February bring the deepest snow. Sissu often has snow when Solang has none.
Is the Atal Tunnel open in winter?
Most days, yes. After fresh snow police allow only 4×4s with chains beyond Solang Nala, or close the road until it is cleared.
How cold does Keylong get?
Keylong’s recorded lows reach about −30 °C in January and −28 °C in February; typical winter nights are well below freezing.
How far is Sissu from Manali?
About 40 km through the Atal Tunnel — roughly 1.5 hours on a clear day. Keylong is 71 km from Manali.
Do I need a permit for Sissu?
No. The online permit is only for the Rohtang Pass road, not for the tunnel or Sissu.
Sources
- MET Norway Locationforecast (CC BY 4.0) — live forecast data
- Wikipedia: Keylong — climate extremes (IMD data)
- Suzu Travels: Atal Tunnel and Sissu snow trip from Manali
Photo credits
Sissu lake near the helipad — it freezes in winter — Photo: UnpetitproleX, CC BY-SA 4.0 · Ghepan Goh peak from Sissu — Photo: Avantikac98, CC BY-SA 4.0 · Keylong, Bhaga valley — Photo: Vyacheslav Argenberg, CC BY 4.0 · The Himalaya from Keylong — Photo: Kiran Kulkarni, CC BY-SA 4.0 · Sissu waterfall (Palden Lhamo Dhar) across the Chandra — Photo: Saad Faruque from Bangalore, India, CC BY 2.0 · From Shashur monastery, Keylong — Photo: Navneet Sharma, CC BY-SA 4.0 · Sissu wildflowers in July — Photo: Timothy Gonsalves, CC BY-SA 4.0 · Prayer stones, Ghepan monastery — Photo: Timothy A. Gonsalves, CC BY-SA 4.0 · Kardang in October — Photo: Timothy A. Gonsalves, CC BY-SA 4.0
