Olongapo climate

Name: Olongapo
Address: PH

Olongapo is warmest in April, with average highs of 33 °C, and coldest in January, when nights average 23 °C. July is the wettest month (562 mm) and January the driest (16 mm). Figures are 1991–2020 climate normals.

Across a full year Olongapo averages 2,574 mm of rain and 365 days above 25 °C.

Philippines · population 221,178 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month April 33 °C
Coldest month January 23 °C
Driest month January 16 mm
Wettest month July 562 mm
Least cloud March 41 % cloud
Hottest on record April 38 °C
Coldest on record January 19 °C
Warmest sea May 30 °C

What to expectOlongapo through the year

Olongapo has a clear annual cycle: average daily highs run from 29 °C in January to 33 °C in April, a swing of 3.2 °C in mean temperature across the year.

Counted across a normal year, 365 days a year reach 25 °C, 165 of them reach 30 °C. The warmest reading in the 1991–2020 record is 38 °C, in April.

Rain is strongly seasonal. July averages 562 mm against 16 mm in January — 36 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Olongapo is warmest in May at 30 °C and coldest in February at 27 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	28.9 °C	16 mm	50 %
February	29.9 °C	19 mm	45 %
March	31.3 °C	25 mm	41 %
April	32.6 °C	31 mm	41 %
May	31.7 °C	195 mm	69 %
June	30.1 °C	370 mm	82 %
July	29.0 °C	562 mm	89 %
August	28.7 °C	552 mm	91 %
September	28.9 °C	432 mm	88 %
October	29.6 °C	222 mm	72 %
November	29.7 °C	83 mm	59 %
December	29.0 °C	68 mm	56 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.9 °C	23.0 °C	25.5 °C	33.6 °C	18.9 °C	31	5
February	29.9 °C	23.1 °C	26.0 °C	34.7 °C	19.9 °C	28	13
March	31.3 °C	24.0 °C	27.2 °C	36.2 °C	20.4 °C	31	26
April	32.6 °C	25.3 °C	28.6 °C	37.7 °C	22.0 °C	30	29
May	31.7 °C	26.0 °C	28.5 °C	37.6 °C	23.7 °C	31	25
June	30.1 °C	25.5 °C	27.5 °C	35.1 °C	23.9 °C	30	16
July	29.0 °C	25.1 °C	26.8 °C	33.7 °C	23.8 °C	31	9
August	28.7 °C	25.1 °C	26.6 °C	32.1 °C	23.5 °C	31	6
September	28.9 °C	24.9 °C	26.6 °C	32.7 °C	23.3 °C	30	7
October	29.6 °C	24.8 °C	26.9 °C	33.4 °C	22.0 °C	31	12
November	29.7 °C	24.6 °C	26.8 °C	32.7 °C	20.0 °C	30	12
December	29.0 °C	23.9 °C	26.1 °C	34.0 °C	19.3 °C	31	7

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	16 mm	3	11 h/day	50 %	75 %	19 km/h	27.4 °C
February	19 mm	3	12 h/day	45 %	73 %	18 km/h	27.2 °C
March	25 mm	5	12 h/day	41 %	72 %	17 km/h	27.9 °C
April	31 mm	6	12 h/day	41 %	72 %	15 km/h	29.0 °C
May	195 mm	20	13 h/day	69 %	80 %	14 km/h	30.0 °C
June	370 mm	25	13 h/day	82 %	87 %	15 km/h	29.9 °C
July	562 mm	29	13 h/day	89 %	89 %	16 km/h	29.4 °C
August	552 mm	29	13 h/day	91 %	90 %	17 km/h	28.9 °C
September	432 mm	27	12 h/day	88 %	90 %	15 km/h	29.0 °C
October	222 mm	20	12 h/day	72 %	85 %	15 km/h	29.0 °C
November	83 mm	9	11 h/day	59 %	81 %	17 km/h	28.8 °C
December	68 mm	7	11 h/day	56 %	78 %	20 km/h	28.2 °C

How Olongapo compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Olongapo	33 °C	23 °C	2,574 mm	365
Angeles City · Philippines	33 °C	20 °C	1,883 mm	363
San Fernando · Philippines	33 °C	22 °C	1,691 mm	363
Mariveles · Philippines	32 °C	24 °C	2,366 mm	365
Malolos · Philippines	32 °C	22 °C	1,726 mm	363

Where Olongapo ranks

Ranking	Position	Value
Best beach destinations in Asia in January	36th of 50	97/100
Best beach destinations in Asia in February	38th of 50	96/100
Best beach destinations in the world in January	47th of 50	97/100

Planning a trip? See the best time to visit Olongapo.

QuestionsCommon questions about Olongapo’s climate

When is the best time to visit Olongapo?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, April is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Olongapo get?

In April, the warmest month, daily highs average 33 °C. About 165 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average 23 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Olongapo?

July, averaging 562 mm over 29 days with rain. The driest month is January with 16 mm. The year as a whole averages 2,574 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Olongapo rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 14.829°, 120.283° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.