Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Kathmandu, Nepal

  • Average high temperature in September: 28.1°C

Warmest month (with highest average high temperature) is June (29.1°C).
Month with lowest average high temperature is January (19.1°C).

  • Average low temperature in September: 18.5°C

Month with highest average low temperature is July (20.2°C).
Coldest month (with lowest average low temperature) is January (2.4°C).

  • Average humidity in September: 82%

Month with highest relative humidity is November (85%).
Month with lowest relative humidity is April (53%).

  • Average rainfall in September: 199.8mm

Wettest month (with highest rainfall) is July (363.4mm).
Driest month (with lowest rainfall) is November (8.3mm).

  • Average rainfall days in September: 15 days

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

  • Average daylight in September: 12h

Months with longest days are May, June and July (Average daylight: 14h).
Month with shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 4.4h

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: 11

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