San Marcelino weather in August

In August, San Marcelino sees average daytime highs of 28°C and overnight lows near 24°C, with 523 mm of rain across 30 wet days and about 12.5 hours of daylight. It is the 12th-warmest and 2nd-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 1% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 42 min at the start of August to 12 h 18 min by month's end. Set against the rest of the year, August is San Marcelino's 12th-clearest and 5th-windiest month. For the whole year in context, see San Marcelino's year-round climate.

Daytime high
28°
12th warmest
Overnight low
24°
9th coldest
Rainfall
523 mm
30 wet days
Daylight
12 h 30 min
5:48 AM – 6:19 PM
Cloud cover
93%
12th clearest
Wind
8 km/h
5th windiest
Solar energy
4.06 kWh/m²
Travel score
3.0
out of 10

San Marcelino is municipality of the Philippines in the province of Zambales.

Density
45/km²
people per km²
Founded
1843

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in San Marcelino reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, August runs on par with July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152824
162824
172824
182824
192824
202824
212824
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How August really feels in San Marcelino

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

San Marcelino weather by month

How August compares with the rest of the year at a glance. August is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°24511.26.2
Feb30° / 21°294.711.55.8
Mar31° / 22°437.611.94.9
Apr32° / 24°5612.212.33.9
May31° / 25°22423.512.72.9
Jun30° / 24°36528.312.92.7
Jul29° / 24°54430.312.82.8
Aug28° / 24°5233012.53.0
Sep29° / 24°40528.712.12.9
Oct30° / 24°24122.811.73.5
Nov30° / 23°10513.911.34.7
Dec29° / 22°788.911.15.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in August, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of August, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1397
2397
3496
4496
5595
6595
7595
8595
9694
10694
11694
12694
13793
14793
15793
16793
17793
18793
19793
20694
21694
22595
23595
24595
25595
26496
27496
28496
29496
30496
31496

Chance of precipitation in August

Any precipitation

San Marcelino gets around 523 mm of rain over 30 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 97% and peaks near 99% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
199
298
398
498
598
698
797
897
997
1097
1197
1297
1396
1496
1596
1696
1796
1896
1996
2096
2197
2296
2396
2496
2596
2696
2796
2895
2995
3095
3195

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14753
24654
34654
44555
54456
64456
74357
84357
94357
104456
114456
124456
134555
144555
154555
164555
174654
184654
194654
204753
214753
224753
234753
244753
254753
264753
274654
284654
294654
304654
314654

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 42 min at the start of August to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 5:45 AM to 5:50 AM, and sunset from 6:26 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:456:26
212.75:456:25
312.75:466:25
412.65:466:25
512.65:466:24
612.65:466:24
712.65:476:23
812.65:476:23
912.65:476:22
1012.65:476:22
1112.65:476:21
1212.65:486:21
1312.55:486:20
1412.55:486:20
1512.55:486:19
1612.55:486:19
1712.55:486:18
1812.55:496:17
1912.55:496:17
2012.55:496:16
2112.45:496:16
2212.45:496:15
2312.45:496:14
2412.45:496:14
2512.45:506:13
2612.45:506:12
2712.45:506:12
2812.35:506:11
2912.35:506:10
3012.35:506:09
3112.35:506:09

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.06 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.36 kWh/m² in April across the year — August's 4.06 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
64.0Moderate
74.0Moderate
84.0Bright
94.0Bright
104.0Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
314.2Bright
Planning a trip in August

Hazard calendar for San Marcelino

In seasonPeak

In August, San Marcelino sits inside its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.

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

San Marcelino'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 August a good time to visit San Marcelino?

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

3.0
Sightseeing
8th-best month of the year
3.6
Beach & pool
12th-best month of the year

August is a weaker month for outdoor sightseeing in San Marcelino.

What to pack for San Marcelino in August

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

In August, San Marcelino sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

Sea temperature near San Marcelino in August

The nearest coast averages about 29°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore 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 San Marcelino in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Marcelino peaks around August 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 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 17UV 14Dec 11UV 8
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in San Marcelino in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Marcelino 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 San Marcelino?

San Marcelino sits at 15.0°N, 120.2°E, 45 m above sea level, in Philippines. The nearest listed city is Castillejos, 6.0 km away.

Topography around San Marcelino

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

Within 3 km, the terrain around San Marcelino has only modest variations in elevation — a maximum elevation change of 79 m around an average of 37 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,082 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,021 m.

The land around San Marcelino is covered by cropland (45%) and trees (37%) within 3 km, trees (42%) and grassland (25%) within 16 km, and water (45%) and trees (31%) within 80 km.

3 km
79 m
16 km
1,082 m
80 km
2,021 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Castillejos 6.0 km · San Antonio 8.0 km · San Narciso 9.0 km · Subic 13 km · Olongapo 21 km · Dinalupihan 33 km · Morong 35 km · Botolan 38 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 San Marcelino (14.9742°, 120.1573°, elevation 45 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).