
Season & Weather Guide
August only for reliable weather across two summit days. Short viable window.
August and September provide the most reliable windows for this double-summit expedition. August offers optimal hard snowpack and maximum weather stability across both peaks, while September provides crisp visibility but colder recovery nights.
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Season Selection
Key point
Book for the first two weeks of August. This gives you the best odds of a stable 5-day weather window to complete both summits.
Season at a Glance
Conditions
Extreme winter conditions.
Crowds
none
Sub-zero temperatures and impassable deep snow.
Closed. Extreme winter conditions.
Conditions
Extreme winter conditions.
Crowds
none
Sub-zero temperatures and impassable deep snow.
Closed. Extreme winter conditions.
Conditions
Deep unconsolidated snow.
Crowds
none
Extreme cold and deep unconsolidated snow.
Early season. Deep snow accumulations.
Conditions
Deep unconsolidated snow.
Crowds
none
High avalanche risk and unstable snowpack.
Early season. Deep snow accumulations.
Conditions
Unstable conditions for double summit.
Crowds
none
Deep unstable snow and high avalanche risk on steep slopes.
Prime pre-monsoon window. Good snow stability.
Conditions
Soft snowpack on both summits.
Crowds
none
Dangerously soft snow rendering a double summit too risky.
Prime pre-monsoon window. Good snow stability.
Conditions
Soft snow on the second summit day.
Crowds
none
Soft snow on the second summit day increasing fatigue and objective hazard.
Peak season in rain shadow. River crossings swell.
Conditions
Optimal. Hard snowpack on both summits. Maximum weather stability.
Crowds
low
Peak season in rain shadow. River crossings swell.
Conditions
Good conditions but cold recovery nights between summits.
Crowds
low
Crystal clear skies. Best visibility of the year.
Conditions
High jetstream winds.
Crowds
none
Severe jet stream impact and extreme cold making recovery impossible.
Crystal clear skies. Best visibility of the year.
Conditions
Winter onset.
Crowds
none
Sub-zero extreme temperatures and severe jet stream winds.
Winter setting in. Sub-zero temperatures rapid.
Conditions
Extreme winter conditions.
Crowds
none
Sub-zero temperatures and impassable deep snow.
Closed. Extreme winter conditions.
Best Light Season
Night Skies
Lens Recommendation
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Check peak season packages