Pass Window

When is it climbable?

May-June and September-October. Avoid monsoon due to landslide-prone roads to Munsiyari.

Season at a Glance

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Peak
Recommended
Shoulder
Closed

Editor's Notes

Editor's Insight

May to June offers blooming alpine meadows, while September to October provides crisp, clear visibility of the Nanda Devi massif.

Month by Month

What each month looks like

January

Pass Closed

Conditions

Deep winter. The high pass is completely buried and impassable.

Crowds

none

Impassable winter snowpack.

-20C to -5CSnow: Very HighSky Clarity:

Closed. Extreme winter conditions.

February

Pass Closed

Conditions

Deep winter. The high pass is completely buried and impassable.

Crowds

none

Impassable winter snowpack.

-18C to -3CSnow: Very HighSky Clarity:

Closed. Extreme winter conditions.

March

Pass Closed

Conditions

Deep winter. The high pass is completely buried and impassable.

Crowds

none

Impassable winter snowpack.

-13C to 2CSnow: HighSky Clarity:

Early season. Deep snow accumulations.

April

Pass Closed

Conditions

Shoulder season. Highly unstable snow conditions and narrow weather windows.

Crowds

low

Unstable snow conditions.

-9C to 6CSnow: HighSky Clarity:

Early season. Deep snow accumulations.

May

Pass Open

Conditions

Crowds

low

-5C to 10CSnow: MediumSky Clarity:

Prime pre-monsoon window. Good snow stability.

June

Pass Open

Conditions

Best visibility of Nanda Devi. Meadows are lush.

Crowds

low

-2C to 13CSnow: MediumSky Clarity:

Prime pre-monsoon window. Good snow stability.

July

Conditions

Monsoon season. Extreme objective hazards including rockfall, avalanches, and swollen rivers.

Crowds

low

Severe monsoon hazards.

0C to 11CSnow: LowSky Clarity:

Monsoon danger. Landslides and severe rains.

August

Conditions

Monsoon season. Extreme objective hazards including rockfall, avalanches, and swollen rivers.

Crowds

none

Severe monsoon hazards.

-1C to 10CSnow: LowSky Clarity:

Monsoon danger. Landslides and severe rains.

September

Pass Open

Conditions

Best air clarity. Snow-free pass crossing.

Crowds

low

-5C to 8CSnow: LowSky Clarity:

Crystal clear skies. Best visibility of the year.

October

Pass Open

Conditions

Crowds

low

-10C to 4CSnow: LowSky Clarity:

Crystal clear skies. Best visibility of the year.

November

Pass Closed

Conditions

Shoulder season. Highly unstable snow conditions and narrow weather windows.

Crowds

none

Unstable snow conditions.

-15C to -1CSnow: HighSky Clarity:

Winter setting in. Sub-zero temperatures rapid.

December

Pass Closed

Conditions

Deep winter. The high pass is completely buried and impassable.

Crowds

none

Impassable winter snowpack.

-19C to -4CSnow: Very HighSky Clarity:

Closed. Extreme winter conditions.

Photography & Light Conditions

Sunrise Spot

Martoli Ridge

Recommended Lenses

2470200

Astrophotography

5/10

Timing makes or breaks a trek. Send this to your group before you decide.

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