Olongapo weather in January

In January, Olongapo sees average daytime highs of 28°C and overnight lows near 23°C, with 17 mm of rain across 2.5 wet days and about 11.2 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 32% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 h 06 min at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Olongapo's 4th-clearest and 2nd-windiest month. For the whole year in context, see Olongapo's year-round climate.

Daytime high
28°
10th warmest
Overnight low
23°
2nd coldest
Rainfall
17 mm
2.5 wet days
Daylight
11 h 12 min
6:32 AM – 5:44 PM
Cloud cover
55%
4th clearest
Wind
13 km/h
2nd windiest
Solar energy
4.83 kWh/m²
Travel score
6.9
out of 10

Olongapo is highly urbanized city in Central Luzon, Philippines.

Density
1,196/km²
people per km²
Founded
1750

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical January day in Olongapo reaches about 28°C in the afternoon and slips back to 23°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12824
22824
32823
42823
52823
62823
72823
82823
92823
102823
112823
122823
132823
142823
152823
162823
172823
182823
192823
202823
212823
222823
232823
242823
252823
262823
272823
282823
292823
302823
312823

How January really feels in Olongapo

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Olongapo weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°172.511.26.9
Feb29° / 23°192.811.56.7
Mar30° / 24°233.811.96.1
Apr31° / 25°275.512.35.2
May30° / 26°1851912.73.8
Jun29° / 26°36125.712.93.2
Jul28° / 25°57129.512.83.1
Aug28° / 25°56529.412.53.3
Sep28° / 25°43627.712.13.2
Oct29° / 25°22520.311.74.1
Nov29° / 25°869.311.35.4
Dec29° / 24°676.611.16.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 27% of January, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25644
35743
45743
55842
65842
75842
85842
95743
105743
115743
125743
135644
145743
155743
165743
175743
185842
195842
205941
216040
226040
236139
246238
256238
266337
276337
286436
296436
306436
316436

Chance of precipitation in January

Any precipitation

Olongapo gets around 17 mm of rain over 2.5 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 10% and peaks near 12% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
112
212
311
410
510
69
79
89
99
109
119
129
139
149
1510
1610
1710
1810
1910
2010
2110
229
239
249
259
269
279
289
299
309
319

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the muggy band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
185141
285240
385339
475439
575538
675538
775637
885537
985537
1085537
1185438
1285438
1385438
1485339
1585339
1685339
1785339
1885339
1985339
2085339
2185339
2285339
2385438
2495338
2595437
2695437
2795536
28105436
29105535
30105535
31105535

Wind in January

Winds average 13 km/h in January.

Across January, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 06 min at the start of January to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:28 AM to 6:32 AM, and sunset from 5:36 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:285:36
211.16:285:37
311.16:295:37
411.16:295:38
511.16:295:38
611.26:305:39
711.26:305:39
811.26:305:40
911.26:305:41
1011.26:315:41
1111.26:315:42
1211.26:315:42
1311.26:315:43
1411.26:325:43
1511.26:325:44
1611.26:325:44
1711.26:325:45
1811.26:325:46
1911.26:325:46
2011.26:325:47
2111.26:325:47
2211.36:325:48
2311.36:325:48
2411.36:325:49
2511.36:325:49
2611.36:325:50
2711.36:325:50
2811.36:325:51
2911.36:325:51
3011.36:325:52
3111.36:325:52

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.83 kWh/m².

For context, solar energy here swings from a low near 4.35 kWh/m² to a high of 6.6 kWh/m² in April across the year — January's 4.83 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.1Bright
Planning a trip in January

Hazard calendar for Olongapo

In seasonPeak

In January, Olongapo sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Olongapo sits in the Pacific typhoon belt; the season peaks July–October.

Olongapo's monsoon runs June–September, when most of the year's rain falls.

Pacific typhoon
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Olongapo?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.9
Sightseeing
1st-best month of the year
8.0
Beach & pool
3rd-best month of the year

January is a reasonable time to visit Olongapo for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Olongapo in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Olongapo sees daytime highs around 28°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Olongapo in January

The nearest coast averages about 27°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in May at about 30°C and coldest in February near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Olongapo in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Olongapo peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 18UV 14Nov 23UV 8
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov8Very high
Dec9Very high

Air quality in Olongapo in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Olongapo is worst in November — around 30 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateNov 1530 µg/m³Aug 1421 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb26Moderate
Mar29Moderate
Apr28Moderate
May23Moderate
Jun22Moderate
Jul21Moderate
Aug21Moderate
Sep22Moderate
Oct29Moderate
Nov30Moderate
Dec29Moderate
Location & terrain

Where is Olongapo?

Olongapo sits at 14.8°N, 120.3°E, 11 m above sea level, in Philippines. The nearest listed city is Subic, 8.0 km away.

Topography around Olongapo

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Olongapo.

Within 3 km, the terrain around Olongapo has only modest variations in elevation — a maximum elevation change of 232 m around an average of 28 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 931 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,005 m.

The land around Olongapo is covered by water (38%), trees (31%) and artificial surfaces (27%) within 3 km, trees (65%) within 16 km, and water (49%) and trees (27%) within 80 km.

3 km
232 m
16 km
931 m
80 km
2,005 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Subic 8.0 km · Castillejos 15 km · Morong 17 km · Dinalupihan 19 km · San Marcelino 21 km · Hermosa 24 km · San Antonio 25 km · Orani 28 km

Philippines travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 60 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$4,171
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
48%
of population, 2024
Homicide rate
4.3
per 100k, 2023
Road deaths
12
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 569
Religion
Roman Catholic 79%other 8%Muslim 6%other Christian 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Olongapo (14.8292°, 120.2828°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).