Christmas Island Aerodrome climate by month
Averages and records for each calendar month at Christmas Island Aerodrome, Christmas Island, from 1972 to 2025. The warmest month is March, averaging 28.3°C; the coolest is August at 26.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 28.0°C | 22.6°C | 31.0°C25 January 2022 | 18.8°C27 January 1982 | 40 / 45 |
| February | 27.9°C | 22.5°C | 31.5°C13 February 1983 | 18.4°C3 February 1989 | 30 / 46 |
| March | 28.3°C | 22.9°C | 33.1°C18 March 2011 | 18.6°C15 March 1982 | 40 / 46 |
| April | 28.2°C | 23.4°C | 31.4°C11 April 1983 | 18.3°C14 April 1978 | 37 / 47 |
| May | 27.8°C | 23.7°C | 30.4°C11 May 2022 | 19.3°C13 May 1977 | 38 / 45 |
| June | 27.0°C | 23.1°C | 29.8°C14 June 2022 | 18.3°C2 June 2004 | 33 / 45 |
| July | 26.3°C | 22.5°C | 28.8°C1 July 1998 | 17.2°C10 July 1978 | 35 / 44 |
| August | 26.0°C | 22.1°C | 29.5°C19 August 1984 | 17.7°C4 August 1997 | 35 / 44 |
| September | 26.2°C | 22.3°C | 30.9°C11 September 1981 | 18.5°C13 September 1982 | 38 / 44 |
| October | 26.8°C | 22.6°C | 31.4°C18 October 1981 | 18.2°C21 October 1986 | 37 / 44 |
| November | 27.2°C | 22.7°C | 31.8°C30 November 1981 | 18.0°C11 November 1976 | 37 / 45 |
| December | 27.7°C | 22.5°C | 31.5°C27 December 2023 | 18.0°C7 December 1985 | 39 / 45 |
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 30 to 40 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.