Kolkata/Bose Intl climate by month
Averages and records for each calendar month at Kolkata/Bose Intl, India, from 1944 to 2025. The warmest month is April, averaging 35.8°C; the coolest is January at 26.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 26.0°C | 12.8°C | 33.0°C9 January 1973 | 6.6°C9 January 2013 | 34 / 60 |
| February | 29.1°C | 16.2°C | 37.3°C26 February 2006 | 7.0°C10 February 1974 | 23 / 61 |
| March | 33.6°C | 21.6°C | 40.4°C26 March 2006 | 11.7°C7 March 1993 | 32 / 59 |
| April | 35.8°C | 24.7°C | 42.0°C20 April 2024 | 15.8°C5 April 1990 | 33 / 60 |
| May | 35.7°C | 26.1°C | 47.0°C17 May 1979 | 12.0°C24 May 1973 | 31 / 58 |
| June | 34.5°C | 26.4°C | 45.0°C2 June 1958 | 16.0°C8 June 1977 | 33 / 57 |
| July | 33.0°C | 26.3°C | 39.2°C3 July 1982 | 22.8°C5 July 1958 | 38 / 59 |
| August | 32.8°C | 26.3°C | 39.0°C30 August 1981 | 21.1°C15 August 1986 | 42 / 59 |
| September | 33.0°C | 25.8°C | 43.0°C30 September 1973 | 22.2°C28 September 2008 | 34 / 57 |
| October | 32.5°C | 23.6°C | 37.0°C1 October 2024 | 15.7°C28 October 2002 | 32 / 58 |
| November | 29.9°C | 18.3°C | 35.0°C4 November 1981 | 8.0°C29 November 1976 | 33 / 58 |
| December | 26.7°C | 14.0°C | 32.2°C4 December 2014 | 8.3°C30 December 1989 | 36 / 57 |
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 23 to 42 years each.
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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.