September weather forecast and climate
Kathmandu, Nepal

Beautiful ancient monuments in the Durbar square in Kathmandu, Nepal
Beautiful ancient monuments in the Durbar square in Kathmandu, Nepal

What is the temperature in September in Kathmandu?

The average high-temperature, in September, in Kathmandu, Nepal, is 28.1°C (82.6°F), while the average low-temperature is 18.5°C (65.3°F).

How many days does it rain in September in Kathmandu?

In Kathmandu, during September, the rain falls for 15 days and regularly aggregates up to 199.8mm (7.9") of precipitation.
Average temperature in September - Kathmandu, Nepal
  • Average high temperature in September: 28.1°C

The warmest month (with the highest average high temperature) is June (29.1°C).
The month with the lowest average high temperature is January (19.1°C).

  • Average low temperature in September: 18.5°C

The month with the highest average low temperature is July (20.2°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).

Average humidity in September - Kathmandu, Nepal
  • Average humidity in September: 82%

The month with the highest relative humidity is November (85%).
The month with the lowest relative humidity is April (53%).

Average rainfall in September - Kathmandu, Nepal
  • Average rainfall in September: 199.8mm

The wettest month (with the highest rainfall) is July (363.4mm).
The driest month (with the lowest rainfall) is November (8.3mm).

Average rainfall days in September - Kathmandu, Nepal
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is July (23 days).
Months with the lowest number of rainy days are November and December (1 days).

Average daylight in September / Average sunshine in September - Kathmandu, Nepal
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.9h).
The month with shortest days is December (Average daylight: 10.4h).

  • Average sunshine in September: 4.4h

The month with most sunshine is February (Average sunshine: 9.1h).
Months with least sunshine are July and September (Average sunshine: 4.4).

Average UV index in September - Kathmandu, Nepal
  • Average UV index in September: 11

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January and December (UV index 5).

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