
Season & Weather Guide
May–June (pre-monsoon) and September–October. Avoid July–August monsoon entirely — rockfall and unstable ice make Tentu La genuinely lethal.
May and June offer the most stable pre-monsoon conditions for the heavily crevassed approach. September and October provide optimal visibility but colder conditions for the exposed summit ridge. The monsoon brings extreme objective hazards.
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Season Selection
Key point
June is the finest month. The Tentu La ice is at its most consolidated after winter freeze, and you have the longest daylight hours — critical for a safe summit return on a Grade D route.
Season at a Glance
Conditions
Extreme winter conditions.
Crowds
none
Extreme winter cold and high avalanche risk on the Tentu Col approach.
Closed. Extreme winter conditions.
Conditions
Extreme winter conditions.
Crowds
none
Extreme winter cold and high avalanche risk on the Tentu Col approach.
Closed. Extreme winter conditions.
Conditions
Deep unconsolidated snow.
Crowds
none
High avalanche risk on the steep 75-80° gradient of Tentu La.
Early season. Deep snow accumulations.
Conditions
Early season with deep snow and avalanche risk.
Crowds
none
High avalanche risk on the steep 75-80° gradient of Tentu La.
Early season. Deep snow accumulations.
Conditions
Best pre-monsoon window. Hard frozen Tentu La.
Crowds
low
Prime pre-monsoon window. Good snow stability.
Conditions
Prime season. Tentu La manageable. Long daylight hours.
Crowds
low
Prime pre-monsoon window. Good snow stability.
Conditions
Monsoon onset. Heavy rain at Beas Kund.
Crowds
none
Monsoon downpours trigger extreme rockfall on the approach and make ice unstable on Tentu La.
Peak season in rain shadow. River crossings swell.
Conditions
Peak monsoon. Extremely dangerous.
Crowds
none
Monsoon downpours trigger extreme rockfall on the approach and make ice unstable on Tentu La.
Peak season in rain shadow. River crossings swell.
Conditions
Post-monsoon. Stable skies. Best clarity of the year.
Crowds
low
Crystal clear skies. Best visibility of the year.
Conditions
Cold and clear. Fresh snow on Tentu La possible. Last viable window.
Crowds
low
Crystal clear skies. Best visibility of the year.
Conditions
Winter onset with rapid temperature drops.
Crowds
none
Severe cold and winter snowfall make the exposed summit ridge unsafe.
Winter setting in. Sub-zero temperatures rapid.
Conditions
Extreme winter conditions.
Crowds
none
Extreme winter cold and high avalanche risk on the Tentu Col approach.
Closed. Extreme winter conditions.
Best Light Season
Night Skies
Lens Recommendation
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