Weather in Kathmandu in September
September in Kathmandu is mild with average temperatures around 22.0°C (71.6°F). Expect significant rainfall with 169mm across approximately 21 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
24.9°C
76.8°F
Low
19.1°C
66.4°F
Precipitation
169 mm
6.6 inches
~21 rainy days
Conditions
Humidity
86%
Comparison to Adjacent Months
September is 70mm drier than August.
September is 2.4°C warmer than October, 123mm wetter than October.