What to expect in Kathmandu in September
September is a mixed month in Kathmandu. You get 26° / 17°, but manageable crowds at the big attractions. Worth it for the right traveller.
Kathmandu weather in September
Typical conditions in Kathmandu during September, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 26°C 79°F |
|---|---|
| Average low | 17°C 63°F |
| Rainfall | Moderate 50/100 |
| How it feels | Warm and comfortable |
Average highs sit around 26°C with lows near 17°C. Rainfall is moderate; the odd shower is likely.
Crowds & demand
Crowd levels are Low for Kathmandu — plenty of space at the main sights.
Prices & value
Prices run low season this month: some of the best deals of the year.
What to pack
Light layers for 26°C days and something with sleeves for evenings, which cool to around 17°C.
What it costs
This is one of the cheaper months to visit Kathmandu. Flights and accommodation sit near their yearly floor, and you can usually book late without being punished for it. Compared with the most expensive month of the year, you are looking at roughly 46% less.
Who this month suits
- Anyone travelling on a budget
- People who would rather have space than perfect conditions
- Visitors who want to catch a festival
Events & what’s on
Look out for Dashain while you’re there.
- Dashain — Nepal's longest festival empties the city as families gather for tika blessings.
Kathmandu in September compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| July | 28° / 19° | Low | $ | 72 |
| August | 27° / 19° | Low | $ | 74 |
| September · This month | 26° / 17° | Low | $ | 71 |
| October | 23° / 12° | High | $$ | 57 |
| November | 19° / 7° | High | $$ | 56 |
These months score higher for Kathmandu on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in September
If the destination is negotiable but the month is not, these places are at their best in September.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated August 2026
