Olongapo weather in April

In April, Olongapo sees average daytime highs of 31°C and overnight lows near 25°C, with 27 mm of rain across 5.5 wet days and about 12.3 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 54% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of April to 12 h 30 min by month's end. Set against the rest of the year, April is Olongapo's 1st-clearest and 11th-windiest month. For the whole year in context, see Olongapo's year-round climate.

Daytime high
31°
1st warmest
Overnight low
25°
10th coldest
Rainfall
27 mm
5.5 wet days
Daylight
12 h 18 min
5:49 AM – 6:09 PM
Cloud cover
42%
1st clearest
Wind
9 km/h
11th windiest
Solar energy
6.6 kWh/m²
Travel score
5.2
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 April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical April day in Olongapo reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 32°C. Set against its neighbours, April runs about 1°C warmer than March and on par with May.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13025
23025
33025
43025
53025
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193126
203126
213126
223126
233126
243126
253126
263126
273126
283126
293126
303126

How April really feels in Olongapo

Once humidity and wind are folded in, April averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Olongapo weather by month

How April compares with the rest of the year at a glance. April is the 1st-warmest and 9th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in April, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of April, with mostly cloudy or overcast conditions the remaining 27%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37624
47624
57624
67624
77624
87525
97525
107525
117525
127327
137327
147327
157327
167228
177129
187129
197129
207129
217129
227129
237129
247129
257129
267129
277129
287030
296832
306733

Chance of precipitation in April

Any precipitation

Olongapo gets around 27 mm of rain over 5.5 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 30% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
116
217
317
417
516
616
716
816
916
1017
1117
1217
1317
1417
1518
1618
1718
1818
1919
2019
2120
2220
2321
2422
2523
2624
2725
2827
2928
3030

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 79% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
121772
220782
318802
417803
516813
614824
713825
812826
911827
1010828
119829
1288210
1388111
1478112
1568113
1668014
1758015
1857916
1948016
2047917
2147818
2237918
2337819
2437720
2537621
2627622
2727523
2827424
2927325
3027127

Wind in April

Winds average 9 km/h in April.

Across April, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 06 min at the start of April to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over April. Sunrise moves from 6:00 AM to 5:41 AM, and sunset from 6:07 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:006:07
212.15:596:07
312.25:586:07
412.25:586:08
512.25:576:08
612.25:566:08
712.25:556:08
812.25:556:08
912.25:546:08
1012.35:536:08
1112.35:536:08
1212.35:526:09
1312.35:516:09
1412.35:506:09
1512.35:506:09
1612.35:496:09
1712.35:486:09
1812.45:486:09
1912.45:476:10
2012.45:476:10
2112.45:466:10
2212.45:456:10
2312.45:456:10
2412.45:446:10
2512.45:446:11
2612.55:436:11
2712.55:426:11
2812.55:426:11
2912.55:416:11
3012.55:416:12

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.6 kWh/m² — the sunniest month for solar.

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 — April's 6.6 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in April

Hazard calendar for Olongapo

In seasonPeak

In April, 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 April a good time to visit Olongapo?

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

5.2
Sightseeing
6th-best month of the year
7.5
Beach & pool
4th-best month of the year

April 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 April

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

In April, Olongapo sees daytime highs around 31°C and nights near 25°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Olongapo in April

The nearest coast averages about 29°C in April — 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 April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 13 (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 April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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
April 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).