Biak/Kaisiepo Arpt climate by month
Averages and records for each calendar month at Biak/Kaisiepo Arpt, Indonesia, from 1957 to 2025. The warmest month is October, averaging 30.7°C; the coolest is July at 30.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 30.5°C | 23.6°C | 36.6°C22 January 1991 | 20.6°C18 January 2008 | 14 / 45 |
| February | 30.2°C | 23.3°C | 36.0°C8 February 2000 | 21.1°C23 February 1958 | 11 / 44 |
| March | 30.4°C | 23.7°C | 33.3°C10 March 2018 | 20.2°C10 March 2006 | 15 / 45 |
| April | 30.5°C | 23.6°C | 33.2°C18 April 2008 | 20.2°C9 April 1995 | 11 / 45 |
| May | 30.6°C | 24.4°C | 33.0°C6 May 1980 | 20.0°C1 May 1999 | 15 / 44 |
| June | 30.3°C | 23.6°C | 33.0°C6 June 1995 | 20.0°C10 June 1980 | 16 / 47 |
| July | 30.0°C | 23.4°C | 33.0°C11 July 1980 | 19.0°C10 July 1980 | 16 / 47 |
| August | 30.2°C | 23.6°C | 34.0°C19 August 1980 | 20.0°C2 August 1979 | 18 / 48 |
| September | 30.3°C | 23.5°C | 34.4°C25 September 1992 | 20.0°C10 September 1979 | 13 / 47 |
| October | 30.7°C | 23.8°C | 34.2°C3 October 1996 | 21.6°C2 October 1996 | 16 / 47 |
| November | 30.7°C | 23.7°C | 34.0°C5 November 1979 | 20.1°C3 November 1984 | 13 / 45 |
| December | 30.6°C | 23.7°C | 33.4°C25 December 1986 | 20.0°C31 December 1980 | 17 / 46 |
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 11 to 18 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.