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Season & Weather Guide
The pre-monsoon (May-June) and post-monsoon (Sep-Oct) windows are the only safe periods to avoid lethal landslides and deep snow.
Seasonal Verdict
The brief windows of pre-monsoon (late May to June) and post-monsoon (September to October) are the only viable periods for this demanding ascent. Monsoon months trigger lethal landslides on the approach to Yamunotri.
Season at a Glance
Editor's Notes
Mid-June offers a chance to see the Brahma Kamal flowers in bloom near the dark waters of the Kund.
Month by Month
Conditions
Fatal. Sub-zero blizzards.
Crowds
none
Pass closed
Route inaccessible due to massive snowpack.
Conditions
Closed.
Crowds
none
Pass closed
Route inaccessible.
Conditions
Closed.
Crowds
none
Extreme avalanche risk
Deep snow still covers the moraine. Only for specialized winter mountaineering expeditions.
Conditions
Dangerous. Soft snow on steep ascent.
Crowds
none
Avalanche danger
Snow begins melting. Yamunotri shrine opens late April / early May.
Conditions
Good weather, but crowded at Yamunotri due to Char Dham yatra. The glacier is stable.
Crowds
low
Excellent window. Hard snow patches aid walking over the otherwise loose scree.
Conditions
Peak trekking season. Snow has mostly melted making scree visible and stable.
Crowds
low
Peak season. Watch out for pre-monsoon showers late in the month.
Conditions
Monsoon rainy. Lethal landslides on Yamunotri highway. River crossings impossible.
Crowds
none
Monsoon risk
Dangerous. Heavy monsoon triggers fatal landslides on the route to Janki Chatti.
Conditions
Monsoon peak. Trail washes out.
Crowds
none
Monsoon danger
Strictly avoid due to torrential rain and rockfall.
Conditions
The Gold Standard. Zero rain. 100% clarity. Flora is blooming. Best weather.
Crowds
low
Post-monsoon window opens. Crystal clear skies and blooming flora.
Conditions
Autumn Gold. Extreme cold at the lake. Icy trails.
Crowds
low
Stunning clarity but rapidly dropping temperatures. The lake begins to freeze.
Conditions
Winter start. Lethal snow and icy sections.
Crowds
none
Extreme wind-chill
Shrine closes. Winter sets in. Trekking discouraged.
Conditions
Closed.
Crowds
none
Pass closed
Route entirely closed off.
Plan Your Trek:
Compare routes side-by-side to find the perfect match for your fitness, dates, and budget.
Timing makes or breaks a trek. Send this to your group before you decide.
Step 3: Route Intelligence
Now see exactly how the route unfolds day by day, including terrain types and daily altitude profiles.
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