Olongapo/Subic Bay Intl climate by month
Averages and records for each calendar month at Olongapo/Subic Bay Intl, Philippines, from 1955 to 2026. The warmest month is April, averaging 34.9°C; the coolest is August at 30.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 31.2°C | 22.3°C | 36.1°C14 January 1988 | 16.1°C11 January 1983 | 36 / 36 |
| February | 32.2°C | 22.4°C | 36.1°C21 February 1977 | 16.7°C2 February 1962 | 36 / 36 |
| March | 33.6°C | 23.4°C | 38.9°C13 March 1988 | 18.3°C7 March 1972 | 36 / 36 |
| April | 34.9°C | 24.9°C | 38.9°C24 April 1986 | 18.9°C27 April 1991 | 37 / 37 |
| May | 34.2°C | 25.4°C | 41.1°C18 May 1988 | 21.7°C3 May 1966 | 38 / 38 |
| June | 32.0°C | 24.9°C | 40.0°C5 June 1987 | 21.1°C28 June 1960 | 37 / 37 |
| July | 31.3°C | 24.4°C | 36.1°C5 July 1973 | 20.0°C1 July 1964 | 36 / 37 |
| August | 30.4°C | 24.3°C | 37.2°C2 August 1987 | 20.0°C14 August 1964 | 37 / 37 |
| September | 31.1°C | 24.2°C | 37.2°C25 September 1987 | 21.1°C2 September 1971 | 36 / 37 |
| October | 31.8°C | 24.3°C | 36.7°C2 October 1964 | 20.6°C6 October 1971 | 37 / 37 |
| November | 31.9°C | 23.8°C | 37.2°C23 November 1968 | 18.3°C16 November 1968 | 35 / 36 |
| December | 31.3°C | 23.0°C | 36.1°C6 December 1985 | 17.2°C15 December 1988 | 35 / 35 |
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 35 to 38 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.