San Marcelino weather in January

In January, San Marcelino sees average daytime highs of 29°C and overnight lows near 21°C, with 24 mm of rain across 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 29°C through the month. The sky is clear or mostly clear about 26% 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 San Marcelino's 4th-clearest and 2nd-windiest month. For the whole year in context, see San Marcelino's year-round climate.

Daytime high
29°
10th warmest
Overnight low
21°
1st coldest
Rainfall
24 mm
5 wet days
Daylight
11 h 12 min
6:33 AM – 5:45 PM
Cloud cover
57%
4th clearest
Wind
9 km/h
2nd windiest
Solar energy
4.71 kWh/m²
Travel score
6.2
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical January day in San Marcelino reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52921
62921
72921
82921
92921
102921
112921
122921
132921
142921
152921
162921
172921
182921
192921
202921
212921
222921
232921
242921
252921
262921
272921
282921
292921
302921
312921

How January really feels in San Marcelino

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.

San Marcelino 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
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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 31% of January, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35644
45644
55743
65743
75743
85743
95743
105644
115644
125644
135644
145644
155545
165644
175743
185743
195743
205842
215842
225941
235842
245941
255941
266040
275941
285941
296040
306040
315941

Chance of precipitation in January

Any precipitation

San Marcelino gets around 24 mm of rain over 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 17% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
118
217
317
416
516
615
715
815
915
1015
1115
1216
1316
1416
1516
1616
1716
1817
1917
2017
2117
2217
2318
2418
2518
2618
2718
2818
2918
3018
3119

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
175340
275439
375538
475538
575637
675637
775736
875736
975736
1075736
1175736
1275736
1385537
1485537
1585537
1685537
1785537
1885636
1985636
2085636
2195536
2295536
2395536
24105436
25105535
26105535
27115435
28115534
29115534
30125434
31125434

Wind in January

Winds average 9 km/h in January.

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

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:29 AM to 6:33 AM, and sunset from 5:36 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:295:36
211.16:295:37
311.16:295:37
411.16:305:38
511.16:305:39
611.16:305:39
711.16:315:40
811.26:315:40
911.26:315:41
1011.26:315:41
1111.26:325:42
1211.26:325:42
1311.26:325:43
1411.26:325:44
1511.26:325:44
1611.26:335:45
1711.26:335:45
1811.26:335:46
1911.26:335:46
2011.26:335:47
2111.26:335:47
2211.26:335:48
2311.36:335:49
2411.36:335:49
2511.36:335:50
2611.36:335:50
2711.36:335:51
2811.36:335:51
2911.36:335:52
3011.36:335:52
3111.36:335:53

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.71 kWh/m².

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 — January's 4.71 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in January

Hazard calendar for San Marcelino

In seasonPeak

In January, San Marcelino sits inside its pacific typhoon 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 January a good time to visit San Marcelino?

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

6.2
Sightseeing
1st-best month of the year
7.7
Beach & pool
1st-best month of the year

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

What to pack for San Marcelino in January

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

In January, San Marcelino sees daytime highs around 29°C and nights near 21°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near San Marcelino 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 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 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 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 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 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
January 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).