Bagmati Province · Nepal
Kathmandu in September
In September, Kathmandu averages a daytime high of 28 °C and a night-time low of 18 °C, with about 328 mm of rain over the month. It falls outside Kathmandu's most comfortable months, October to April.
- Average high
- 28 °C
- Average low
- 18 °C
- Rain in the month
- 328 mm
- Daylight on 15 Sep
- 12 h 10 min
- Comfortable month
- No
- Places to stay
- 236
When to go
How September compares with the rest of the year in Kathmandu
September is tied for the 3rd warmest month in Kathmandu by average daytime high; across the year the highs run from 18 °C to 29 °C and the lows from 2 °C to 20 °C. By day, September is about the same as August, and October is 1 °C cooler than September.
September brings 328 mm of rain, more than the monthly average of 168 mm (2016 mm a year); it is the 3rd wettest month.
On 15 September the sun is up for about 12 h 10 min, against 10 h 20 min at the shortest and 13 h 50 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 18 °C | 2 °C | 16 mm | Yes |
| February | 19 °C | 4 °C | 26 mm | Yes |
| March | 25 °C | 8 °C | 36 mm | Yes |
| April | 28 °C | 12 °C | 67 mm | Yes |
| May | 29 °C | 16 °C | 214 mm | |
| June | 29 °C | 19 °C | 289 mm | |
| July | 28 °C | 20 °C | 523 mm | |
| August | 28 °C | 20 °C | 447 mm | |
| September | 28 °C | 18 °C | 328 mm | |
| October | 26 °C | 13 °C | 48 mm | Yes |
| November | 23 °C | 7 °C | 8 mm | Yes |
| December | 19 °C | 3 °C | 14 mm | Yes |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is September a good time to visit Kathmandu?
Not by the measure used here: about 328 mm of rain is 80 mm or more. The comfortable months in Kathmandu are October to April; the nearest are April, before, and October, after.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in Nepal in September
Nationwide public holidays; shops and offices may close on these dates.
Where to stay
Where to stay in Kathmandu
This guide lists 236 places to stay in Kathmandu, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 77; 1–3 km, 145; 3–10 km, 14.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.