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Climate · Kathmandu

Kathmandu in September

Warm and wet, as the days shorten.

Typical weather, averaged over 30 years

September in Kathmandu is warm: highs near 80°F, lows near 65°F. Rain falls on almost every day, and the days shorten by 35 minutes from the first week to the last.September in Kathmandu is warm: highs near 27°C, lows near 18°C. Rain falls on almost every day, and the days shorten by 35 minutes from the first week to the last.

High
80°F27°Caverage
Low
65°F18°Caverage
Wet days
7a week · 97% of days
Daylight
12h 16mon average

Is September a good time to visit Kathmandu?

A good month, just outside Kathmandu's best months, which run from November.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 80°F in September, against 64°F to 82°F through the year.Highs near 27°C in September, against 18°C to 28°C through the year.

Chance of a wet day

97% of days in September, against 9% to 100% through the year.

Cloud cover

64% cover in September, against 16% to 81% through the year.

Daylight

12h 16m in September, against 10h 25m to 13h 52m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August81°27°low 67°low 19°7 wet days a weekRain on almost every day.
  2. September80°27°low 65°low 18°7 wet days a weekRain on almost every day.
  3. October77°25°low 60°low 16°4 wet days a weekRain on about four days a week.

Where Kathmandu sits, in September

Asia/Kathmandu
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
5:48 AMsets 6:10 PM
Above the sea
1,300 mupland
Latitude
27.7°Nnorthern hemisphere
Nearest of ours
Pumdibhumdi143 km north-west

The land around Kathmandu, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Nepal in September

high · low · wet days
See September on the planning mapThe whole year in Kathmandu

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Kathmandu. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,300 m) against the climate model's (1,614 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,300 m) against the climate model's (1,614 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.