Nepal weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Nepal in September. Check more long-term weather averages for Nepal in September before you book your next holiday to Nepal in 2025/2026.

  • 28°C maximum daytime temperature in September in Nepal (Kathmandu)28
    28°C max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in September in Nepal (Kathmandu)10
    10 days with some rainfall
  • 18°C minimum night-time temperature in September in Nepal (Kathmandu)18
    18°C min night temperature
  • 12 hours of daylight per day in September in Nepal (Kathmandu)12
    12 hours of daylight per day
  • Low heat & humidity in September in Nepal (Kathmandu)L
    Low heat & humidity
  • 323 mm monthly rainfall in September in Nepal (Kathmandu)323
    323 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Nepal (Kathmandu)11
    11 (Extreme) UV index

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The September weather guide for Nepal (Kathmandu) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Nepal destinations

Below are average maximum temperatures at popular countries, regions and places in Nepal in September. Select a holiday destination to see more weather parameters.

All Nepal destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Nepal in September?

Daytime temperatures usually reach 28°C in Kathmandu, Nepal in September with low heat and humidity, falling to 18°C at night.

How sunny is it in Nepal in September?

There are normally 4 hours of bright sunshine each day in Kathmandu, Nepal in September - that's 31% of daylight hours.

Does it rain in Nepal in September?

There are usually 10 days with some rain in Kathmandu, Nepal in September and the average monthly rainfall is 323mm.

What is the chance of a cyclone in Nepal in September?

On average less than 1 day in September in Kathmandu, Nepal is likely to be affected by the passage of one or more tropical storms.

Nepal September sunrise & sunset times

Browse the sunrise and sunset times for Nepal in September 2025. Select a month to view Nepal sunrise and sunset times for the next 12 months. The Nepal sunrise and sunset times shown below are for Kathmandu.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:43 18:25
Monday, 15th September 2025 05:49 18:09
Tuesday, 30th September 2025 05:56 17:51

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