Honiara/Henderson Arpt climate by month
Averages and records for each calendar month at Honiara/Henderson Arpt, Solomon Islands, from 1949 to 2025. The warmest month is October, averaging 32.0°C; the coolest is March at 31.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 31.7°C | 22.7°C | 36.0°C3 January 2016 | 19.5°C6 January 1993 | 20 / 36 |
| February | 31.5°C | 23.0°C | 37.4°C18 February 2020 | 19.0°C16 February 1984 | 16 / 37 |
| March | 31.3°C | 22.8°C | 35.6°C27 March 2021 | 19.8°C23 March 1993 | 18 / 36 |
| April | 31.5°C | 23.2°C | 34.2°C23 April 2023 | 20.6°C27 April 1995 | 18 / 37 |
| May | 31.8°C | 22.6°C | 35.1°C4 May 2023 | 19.0°C28 May 2007 | 21 / 37 |
| June | 31.5°C | 22.4°C | 38.0°C2 June 1985 | 18.9°C16 June 2008 | 17 / 38 |
| July | 31.4°C | 21.5°C | 34.8°C22 July 2024 | 17.4°C12 July 1993 | 19 / 36 |
| August | 31.3°C | 21.8°C | 34.9°C20 August 1992 | 16.6°C10 August 1993 | 19 / 38 |
| September | 31.6°C | 21.9°C | 34.7°C18 September 2023 | 16.9°C29 September 1994 | 15 / 37 |
| October | 32.0°C | – | 34.8°C26 October 1998 | 17.0°C17 October 1984 | 19 / 37 |
| November | 31.8°C | – | 35.3°C11 November 2021 | 18.2°C4 November 1993 | 18 / 35 |
| December | 31.8°C | 22.8°C | 37.7°C3 December 1999 | 20.1°C6 December 2014 | 17 / 36 |
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 15 to 21 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.