Seasonality Intelligence

When to Trek Nepal

Nepal has two prime trekking seasons — spring (Mar–May) and autumn (Sep–Nov) — plus hidden windows most trekkers miss. We show you crowd data, weather scores, and secret windows by route.

Spring

Mar–May

Best

Rhododendrons, clear skies, warm daytime. Peak crowding from mid-April.

Monsoon

Jun–Aug

Avoid (mostly)

Heavy rain, leeches, trail mud. Exception: Upper Mustang & Dolpo stay dry.

Autumn

Sep–Nov

Best

Clearest skies of the year. October is peak — busiest and most expensive.

Winter

Dec–Feb

Possible

Cold at altitude, high passes may close, but beautiful quiet on low routes.

Monthly Trek Score — All Routes

Combined weather + crowd + value index per month (1–5)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Best
Good
OK
Avoid

Route Seasonal Matrix

Season-by-season verdict for every major trekking route

RouteSpring Mar–MayMonsoon Jun–AugAutumn Sep–NovWinter Dec–Feb
Everest Base Camp★★★★★
Best — clear, rhododendrons peak
✗ Avoid
Avoid — leeches, fog, trail mud
★★★★★
Best — crystal clear skies, peak trekker season
★★★☆☆
Possible — cold, quiet, some snow on pass
Annapurna Circuit★★★★★
Spectacular rhododendron bloom below 3,500m
✗ Avoid
Very wet below 3,000m — leeches, landslides
★★★★★
Best weather window — clearest mountain views
★★★☆☆
Thorong La (5,416m) may close after heavy snow
Annapurna Base Camp★★★★
Beautiful but busy — moderate trail congestion
★★☆☆☆
Leeches below Modi Khola — rain above 2,500m
★★★★★
Perfect conditions — best clarity of the year
★★☆☆☆
ABC sometimes snowbound — lower sections fine
Poon Hill★★★★★
Rhododendron forests at peak — iconic pink trails
★★★☆☆
Possible — wet but lush; some views open briefly
★★★★★
Crystal panoramas of Annapurna and Dhaulagiri
★★★★
Quiet and beautiful — cold nights but manageable
Langtang Valley★★★★
Excellent — yak pastures green, good visibility
★★☆☆☆
Possible but leeches and rain common below 3,000m
★★★★★
Best season — stable weather, clear mountain views
★★★☆☆
Cold nights at Kyanjin (3,870m) — doable but cold
Upper Mustang★★★☆☆
Good — Tiji Festival in May, slightly dusty
★★★★★
BEST — rain shadow zone stays dry while rest of Nepal is wet!
★★★★
Good, windy — Lo Manthang beautiful in fall light
★★☆☆☆
Very cold, some lodges closed, limited services
Manaslu Circuit★★★★
Pre-monsoon is excellent — Larkya La clear
✗ Avoid
Extremely wet + Larkya La (5,160m) dangerous
★★★★★
Best — clear skies, dramatic high-altitude views
★★☆☆☆
Larkya La often snowbound — restricted access
Kanchenjunga★★★★
Apr–May — pre-monsoon clarity, rhododendrons
✗ Avoid
Heavy monsoon — trails flooded, dangerous crossings
★★★★★
October–November best — post-monsoon clarity
★★☆☆☆
Very remote + cold — not recommended without experience

Secret Windows — Less Crowds, Same Beauty

Shoulder season slots that give you the same views with 20–50% fewer trekkers

Late September — Before the October Rush

Sep 15–30

20–30% fewer trekkers than October peak. Skies clear post-monsoon but crowds haven't peaked yet.

~15% cheaper·Low–Moderate
EBCAnnapurna CircuitLangtang

Early March — Spring Pre-Season

Mar 1–20

Rhododendrons starting, very few trekkers, operators eager for business. Cold but clear.

~20% cheaper·Low
EBCLangtangPoon Hill

December Poon Hill

Dec 1–20

Snow-dusted rhododendron forests, almost no other trekkers, crisp mountain panoramas. Low altitude means manageable cold.

~25% cheaper·Very Low
Poon Hill / Ghorepani

June–August: Upper Mustang

Jun–Aug

Nepal's best-kept secret — monsoon rain shadow means completely dry while rest of Nepal is soaked. Unique Tibetan culture.

Same price·Low
Upper MustangDolpo (Lo Manthang)

Climate Intelligence Note — Updated Mar 2026

Climate change is shifting Nepal's optimal trekking windows. Since 2020, mid-October to December has become increasingly favourable for Everest and Annapurna routes — fewer pre-season storms, extended clear windows into November. Spring rhododendron bloom is now peaking ~1–2 weeks earlier than historical norms. This widget updates annually based on DHM Nepal meteorological data.