Cocos Island Airport climate by month
Averages and records for each calendar month at Cocos Island Airport, Christmas Island, from 1952 to 2025. The warmest month is March, averaging 30.0°C; the coolest is August at 28.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 29.8°C | 24.8°C | 33.1°C27 January 2025 | 21.0°C2 January 2007 | 69 / 73 |
| February | 29.9°C | 24.9°C | 32.8°C23 February 2017 | 20.1°C28 February 1966 | 62 / 74 |
| March | 30.0°C | 25.1°C | 32.7°C21 March 1998 | 19.8°C11 March 1984 | 66 / 74 |
| April | 29.7°C | 25.2°C | 32.8°C11 April 1998 | 19.6°C16 April 1966 | 59 / 74 |
| May | 29.3°C | 25.0°C | 32.0°C8 May 2023 | 19.4°C16 May 1965 | 62 / 74 |
| June | 28.5°C | 24.4°C | 32.0°C1 June 2025 | 20.1°C24 June 1968 | 55 / 74 |
| July | 28.1°C | 23.9°C | 31.6°C6 July 2024 | 20.4°C15 July 1973 | 60 / 74 |
| August | 28.0°C | 23.8°C | 31.0°C10 August 2024 | 18.3°C21 August 1955 | 64 / 74 |
| September | 28.2°C | 23.8°C | 30.5°C25 September 2024 | 19.0°C4 September 1977 | 58 / 73 |
| October | 28.7°C | 24.1°C | 31.0°C25 October 1998 | 20.6°C2 October 1966 | 64 / 73 |
| November | 29.1°C | 24.3°C | 32.1°C28 November 2022 | 19.3°C26 November 1973 | 64 / 73 |
| December | 29.4°C | 24.5°C | 33.2°C3 December 2024 | 20.4°C27 December 2018 | 66 / 73 |
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 55 to 69 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.