Kathmandu · AutumnMonth summary
Kathmandu weather in September
⚠️ Fair
🌡️ Temperature min / max
66°F – 79°F
🌧 Rainy days
95% of days
☀️ Sunshine
9.6h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
6.4/10
📅 📅 Best month
November (8.0/10)
Quick decision
Should you visit Kathmandu in September?
⚠️ Fair
✅ Yes if: you're willing to accept showers in exchange for lower prices and fewer tourists.
❌ No if: you're planning 100% outdoor activities — rain is frequent.
Our take: September is an average time for Kathmandu. November (8.0/10) is clearly preferable.
By trip type
Kathmandu in September by trip type
- 🏙️ 🏙️ City break / culture : ⚠️ Possible
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : ✅ Low season
Local context
What to expect in September
Autumn marks the end of peak season in Kathmandu. Temperatures drop (26°F) and rain returns (95% of days). With 95% of rainy days, always have indoor alternatives planned. Not the best window, but acceptable if dates are constrained. November (8.0/10) is significantly better if possible.
Browse by month
All months for Kathmandu
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 41°F | 63°F | 13% | 0.0in | 9.2h | 7.2/10 |
| 🌤️ February | 45°F | 66°F | 21% | 0.0in | 10.1h | 7.4/10 |
| 🌤️ March | 50°F | 72°F | 35% | 0.1in | 11.0h | 7.7/10 |
| 🌤️ April | 57°F | 77°F | 42% | 0.1in | 11.3h | 7.8/10 |
| ⛅ May | 61°F | 79°F | 78% | 0.3in | 11.6h | 7.1/10 |
| 🌦️ June | 66°F | 79°F | 90% | 0.6in | 10.9h | 7.0/10 |
| 🌧️ July | 68°F | 79°F | 100% | 1.1in | 8.0h | 5.8/10 |
| 🌧️ August | 68°F | 81°F | 100% | 0.9in | 8.6h | 6.4/10 |
| 🌧️ September | 66°F | 79°F | 95% | 0.6in | 9.6h | 6.4/10 |
| 🌤️ October | 59°F | 75°F | 43% | 0.1in | 10.0h | 7.5/10 |
| 🌤️ November | 50°F | 70°F | 9% | 0.0in | 9.9h | 8.0/10 |
| 🌤️ December | 43°F | 64°F | 6% | 0.0in | 9.3h | 7.4/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Kathmandu averages 79°F, 95% rainy days and 9.6h of sunshine per day. Overall weather score: 6.4/10.
See methodology →
Comparison
September vs November (best month)
The best month is November (score 8.0/10). Difference:
- 🌡️ Max temperature : -5°F
- 🌧 Rainy days : -86%
- ☀️ Sunshine : +0.3h/day
FAQ
FAQ — Kathmandu in September
Is September a good time to visit Kathmandu?
September is an acceptable time for Kathmandu (score 6.4/10). Conditions are decent but not optimal — consider November (8.0/10) if possible.
Does it rain a lot in Kathmandu in September?
Yes, 95% of days see rain in September. Plan some indoor activities as backup.
Accommodation
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