A pass at this height has a short season.
Autumn
The most reliable window is late September to mid-October, as in published departures.
Spring
Possible in some years, but snow may linger at the pass.
Monsoon and winter
Not advised. Rain, cloud and landslides affect the approaches, and winter snow is deep.
Checking conditions
Your guide should seek current information from recent parties and local sources before the crossing.
Why the window is narrow
The pass lies above 5,000 m, and snow, wind and cold are factors for much of the year. In autumn, the monsoon has ended and the weather is more stable, but days shorten quickly. In spring, snow may linger. Planning around these limits, and keeping a spare day, is the key to a safe crossing.
What to watch for
- Fresh snowfall in the days before the crossing.
- Strong wind or rapidly changing cloud.
- Very low temperatures overnight.
- Unusual silence or warmth that may precede a storm.
Flexibility
Even in the best season, conditions can change. Be ready to wait a day or two, or to change route. A flexible schedule is the most valuable safety tool.
Month-by-month for the crossing
- April: snow likely on the pass.
- May: rare window; check conditions.
- June to August: monsoon; not advised.
- September: improving late in the month.
- October: the main window for published departures.
- November: short days and early snow.
- December to March: not feasible.
Common questions
When can I cross Teri La?
Mainly autumn, around late September to mid-October.
Is spring possible?
Sometimes, but snow can remain.
Can I cross in winter?
No.
Why autumn tends to win
The post-monsoon months bring clearer skies and firmer trails, which suits a remote pass crossing. Daytime visibility is good, but nights are cold, so pack accordingly.
Planning a flexible window
Weather on high passes changes quickly. Build a spare day or two into the schedule and let your guide judge the crossing conditions on the day.
Day length and cold
Late autumn days are shorter and nights colder. Plan an early start for the crossing.
Snow timing
Early snow can close the pass, so aim for stable windows and allow weather days.
