Subic weather in December

In December, Subic sees average daytime highs of 29°C and overnight lows near 22°C, with 78 mm of rain across 8.9 wet days and about 11.1 hours of daylight. It is the 8th-warmest and 8th-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 28% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 12 min at the start of December to 11 h 06 min by month's end. Set against the rest of the year, December is Subic's 5th-clearest and 1st-windiest month. For the whole year in context, see Subic's year-round climate.

Daytime high
29°
8th warmest
Overnight low
22°
3rd coldest
Rainfall
78 mm
8.9 wet days
Daylight
11 h 06 min
6:22 AM – 5:29 PM
Cloud cover
61%
5th clearest
Wind
9 km/h
1st windiest
Solar energy
4.27 kWh/m²
Travel score
5.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in Subic reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922
312922

How December really feels in Subic

Once humidity and wind are folded in, December averages 7 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
7
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Subic weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 8th-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45446
55347
65347
75446
85347
95347
105347
115248
125248
135149
145149
155050
165050
175050
185050
194951
204951
214951
224951
234951
244951
255050
265149
275248
285347
295347
305446
315545

Chance of precipitation in December

Any precipitation

Subic gets around 78 mm of rain over 8.9 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 36% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
336
435
535
635
734
834
934
1033
1133
1232
1331
1431
1530
1629
1728
1827
1927
2026
2125
2225
2324
2423
2523
2622
2721
2820
2920
3019
3119

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1123751
2124741
3126721
4127711
5128692
6128701
7129691
8130681
9130681
10131671
11132661
12132661
13233641
14234631
15235621
16336601
17337591
18338581
19439561
20440551
21541531
22642511
23643501
24644491
25745481
26746461
27747451
28749441
29750431
30751420
31752410

Wind in December

Winds average 9 km/h in December, the windiest month of the year.

Across December, 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.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 12 min at the start of December to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:13 AM to 6:28 AM, and sunset from 5:24 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:135:24
211.26:145:24
311.26:145:25
411.26:155:25
511.26:165:25
611.26:165:25
711.26:175:26
811.16:175:26
911.16:185:26
1011.16:185:27
1111.16:195:27
1211.16:195:27
1311.16:205:28
1411.16:205:28
1511.16:215:29
1611.16:225:29
1711.16:225:29
1811.16:235:30
1911.16:235:30
2011.16:245:31
2111.16:245:31
2211.16:255:32
2311.16:255:32
2411.16:255:33
2511.16:265:33
2611.16:265:34
2711.16:275:34
2811.16:275:35
2911.16:285:35
3011.16:285:36
3111.16:285:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.27 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 — December's 4.27 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Subic

In seasonPeak

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

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

Subic'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 December a good time to visit Subic?

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

5.6
Sightseeing
3rd-best month of the year
7.2
Beach & pool
4th-best month of the year

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

What to pack for Subic in December

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

In December, Subic sees daytime highs around 29°C and nights near 22°C. Pack light clothes. Worth having: rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near Subic in December

The nearest coast averages about 28°C in December — 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 Subic in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Subic 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 Subic in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Subic 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 Subic?

Subic sits at 14.9°N, 120.2°E, 10 m above sea level, in Philippines. The nearest listed city is Castillejos, 7.0 km away.

Topography around Subic

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

Within 3 km, the terrain around Subic has significant variations in elevation — a maximum elevation change of 280 m around an average of 34 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 Subic is covered by trees (50%) and water (28%) within 3 km, trees (52%) and grassland (21%) within 16 km, and water (48%) and trees (28%) within 80 km.

3 km
280 m
16 km
1,082 m
80 km
2,021 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Castillejos 7.0 km · Olongapo 8.0 km · San Marcelino 13 km · San Antonio 17 km · San Narciso 22 km · Morong 23 km · Dinalupihan 24 km · Hermosa 30 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 Subic (14.8787°, 120.2319°, elevation 10 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).