Season & Weather Guide
Best Time — Pin Bhabha Pass Trek
Seasonal Overview
The pass is only crossable in summer. July to September is the prime window, capturing the intense green of Kinnaur and the stark beauty of Spiti.
Peak Season
july, august, september
Off Season
october, november, december, january, february, march
Season Selection
Key point
Late August provides the most violent contrast between the heavy rain of Kinnaur and the bone-dry desert of Spiti.
Month-by-Month Trail Guide
January
Conditions
Pass is buried under 15+ feet of snow. Impossible.
Crowds
none
Route inaccessible.
February
Conditions
Pass is buried.
Crowds
none
Route inaccessible.
March
Conditions
Avalanche season.
Crowds
none
Route inaccessible.
April
Conditions
Lower valleys open, pass is deadly.
Crowds
none
Wait for conditions to clear.
May
RecommendedConditions
First expeditions push through heavy snow. Very tough.
Crowds
low
Carry microspikes and gaiters. Hard snow.
June
RecommendedConditions
Snow melting rapidly. Excellent climbing.
Crowds
medium
Very pleasant trekking weather. Snow is soft but navigable.
July
RecommendedConditions
Kinnaur side is green but muddy. Spiti side is perfect.
Crowds
high
Expect heavy rain in Kinnaur; pack everything in waterproof dry bags.
August
RecommendedConditions
Kinnaur receives rain. River crossings are dangerous.
Crowds
medium
Rivers are high. Strictly follow guide instructions at water crossings.
September
RecommendedConditions
The holy grail window. Sharp views, safe rivers.
Crowds
high
The finest visibility of the year. The rain shadow effect is vividly visible.
October
Conditions
Freezing winds hit. The pass starts icing over.
Crowds
low
Extremely cold winds at the pass. Wear summit down jackets.
November
Conditions
Highly dangerous due to extreme cold and ice.
Crowds
none
Only for deep winter alpine experts.
December
Conditions
Heavy winter storms close the route.
Crowds
none
Route closes.
Important Tips
Late September is the safest time, as the heavy monsoon in Kinnaur recedes, making the muddy ascents solid and safe.
Timing makes or breaks a trek. Send this to your group before you decide.
Planning a 2026 trek?
Now that you know when to go, find the best local operators with availability for your preferred dates.
Check peak season packages