✗ Off season — better months exist

Hilley–Barsey Trek in September

Weather, temperatures, packing and honest advice — from the team that runs this trail.

The quick answer

We don't recommend Hilley–Barsey in September. The trail is at its best in Mar, Apr, May — and there are better options this month (listed below). The trek runs 3 days from Hilley, West Sikkim, reaching 10,000 ft at its highest point, and is graded Easy-Moderate (2/5). The fee is ₹7,999 + 5% GST with permits, meals, camping and certified trek leaders included.

Weather & trail conditions in September

The monsoon washes the sky clean, leaving the sharpest mountain views of the year. Trails are dry, rivers settle down, and nights get progressively colder as winter approaches. On Hilley–Barsey, expect daytime temperatures around 19°C on the trail and roughly 8°C at the highest camps after dark in September.

September in the Himalayas

Daytime

~19°C

Night at camp

~8°C

Highest point

10,000 ft

Grade

Easy-Moderate

What to pack for September

✓ Layered warm wear — October nights differ hugely from September's
✓ A padded jacket for camps above 10,000 ft
✓ High-ankle trekking shoes for dry, rocky trails
✓ A good camera — this is the season of clear summit views

Don't own the gear? Rent shoes, jackets and more on our rentals page — sanitised after every trek.

Booking notes for September

Post-monsoon season opens — photographers book these batches months out. The best months for Hilley–Barsey are Mar, Apr, May.

Frequently asked

Is September a good time for the Hilley–Barsey trek?

We don't recommend Hilley–Barsey in September. The trail is at its best in Mar, Apr, May — and there are better options this month (listed below).

How cold is Hilley–Barsey in September?

Plan for daytime temperatures around 19°C and nights near 8°C at the higher camps. Our sleeping bags are rated for well below these temperatures.

Can beginners do Hilley–Barsey in September?

Yes — Hilley–Barsey is graded Easy-Moderate, one of our most beginner-friendly trails. That said, prefer the Mar, Apr, May window for the best first experience.