Kathmandu Airport weather by month
Averages and records for each calendar month at Kathmandu Airport, Nepal, from 1971 to 2025. The warmest month is June, averaging 28.8°C; the coolest is January at 18.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 18.2°C | 2.2°C | 26.0°C5 January 2006 | −3.5°C11 January 1978 | 35 / 52 |
| February | 20.5°C | 3.8°C | 29.2°C25 February 2006 | −2.4°C4 February 1978 | 35 / 52 |
| March | 24.7°C | 7.5°C | 31.6°C28 March 1992 | 0.5°C13 March 1978 | 39 / 52 |
| April | 27.8°C | 11.3°C | 35.6°C26 April 1999 | 3.5°C7 April 1997 | 39 / 53 |
| May | 28.4°C | 15.6°C | 36.6°C7 May 1989 | 8.8°C5 May 1987 | 38 / 53 |
| June | 28.8°C | 19.0°C | 35.3°C15 June 2024 | 12.2°C14 June 1988 | 38 / 52 |
| July | 28.0°C | 20.0°C | 34.6°C28 July 2015 | 15.3°C5 July 1990 | 37 / 52 |
| August | 28.3°C | 19.8°C | 35.2°C4 August 2010 | 16.3°C11 August 1993 | 36 / 52 |
| September | 27.5°C | 18.3°C | 32.6°C19 September 2024 | 11.8°C29 September 1982 | 34 / 51 |
| October | 26.1°C | 13.2°C | 31.9°C15 October 1989 | 2.3°C24 October 2012 | 36 / 51 |
| November | 22.8°C | 7.4°C | 28.5°C9 November 2008 | 1.3°C28 November 1975 | 33 / 52 |
| December | 19.5°C | 3.3°C | 25.2°C3 December 1988 | −2.0°C31 December 1976 | 32 / 51 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 32 to 39 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
- Kathmandu/Tribhuvan Intl
- Gorakhpur Arpt, India
- Gorakhpur, India
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.