San Mariano weather in December

In December, San Mariano sees average daytime highs of 28°C and overnight lows near 22°C, with 383 mm of rain across 25.9 wet days and about 11.6 hours of daylight. It is the 10th-warmest and 4th-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 5% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of December to 11 h 36 min by month's end. Set against the rest of the year, December is San Mariano's 5th-clearest and 4th-windiest month. For the whole year in context, see San Mariano's year-round climate.

Daytime high
28°
10th warmest
Overnight low
22°
5th coldest
Rainfall
383 mm
25.9 wet days
Daylight
11 h 36 min
5:45 AM – 5:19 PM
Cloud cover
82%
5th clearest
Wind
5 km/h
4th windiest
Solar energy
4.07 kWh/m²
Travel score
3.6
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

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

A typical December day in San Mariano reaches about 28°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 26°C and 30°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122822
132822
142822
152822
162822
172822
182822
192822
202822
212822
222822
232822
242822
252822
262822
272822
282822
292822
302822
312822

How December really feels in San Mariano

Once humidity and wind are folded in, December 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

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

San Mariano weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 21°38724.411.64.1
Feb28° / 21°34119.711.84.2
Mar29° / 21°32222.311.94.0
Apr30° / 22°31922.812.23.5
May30° / 22°47326.612.33.0
Jun29° / 22°52425.312.43.2
Jul29° / 22°33922.312.43.6
Aug30° / 22°28020.712.23.7
Sep30° / 22°25220.3123.6
Oct30° / 22°2982311.83.4
Nov29° / 22°37925.111.73.3
Dec28° / 22°38325.911.63.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31882
41783
51783
61783
71783
81783
91783
101783
111783
121783
131783
141783
151783
161783
171783
181684
191684
201684
211684
221684
231684
241783
251783
261783
271783
281783
291882
301981
311981

Chance of precipitation in December

Any precipitation

San Mariano gets around 383 mm of rain over 25.9 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 84% and peaks near 86% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
182
282
382
483
583
683
783
884
984
1085
1185
1285
1386
1486
1586
1686
1786
1886
1985
2085
2185
2284
2384
2483
2583
2682
2782
2882
2981
3081
3181

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1892
2892
3793
4793
5793
6793
7694
8694
9694
10595
11595
12595
13595
14595
15595
16694
17694
18793
19793
20892
21991
22991
231090
241189
251189
261288
271387
281387
291486
301486
311585

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 36 min at the start of December to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:38 AM to 5:52 AM, and sunset from 5:14 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:385:14
211.65:385:14
311.65:395:14
411.65:395:15
511.65:405:15
611.65:405:15
711.65:415:16
811.65:415:16
911.65:425:16
1011.65:425:17
1111.65:435:17
1211.65:435:17
1311.65:445:18
1411.65:445:18
1511.65:455:19
1611.65:455:19
1711.65:465:20
1811.65:465:20
1911.65:475:20
2011.65:475:21
2111.65:485:21
2211.65:485:22
2311.65:495:22
2411.65:495:23
2511.65:495:23
2611.65:505:24
2711.65:505:24
2811.65:515:25
2911.65:515:25
3011.65:525:26
3111.65:525:26

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.07 kWh/m².

For context, solar energy here swings from a low near 4.03 kWh/m² to a high of 5.46 kWh/m² in April across the year — December's 4.07 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.0Bright
134.0Bright
144.0Bright
154.0Bright
164.0Bright
174.0Bright
184.0Bright
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
314.0Bright
Planning a trip in December

Hazard calendar for San Mariano

In seasonPeak

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

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

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

Is December a good time to visit San Mariano?

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

3.6
Sightseeing
5th-best month of the year
4.2
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in San Mariano.

What to pack for San Mariano in December

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

In December, San Mariano sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

Sea temperature near San Mariano in December

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

The sea at the nearest coast (about 44 km away) is warmest in June at about 30°C and coldest in February near 28°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Warm
Mar28Tropical
Apr29Tropical
May29Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in San Mariano in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Mariano peaks around March 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 22UV 14Dec 14UV 11
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in San Mariano 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 San Mariano is worst in September — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateSep 1817 µg/m³Feb 1711 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar11Good
Apr12Good
May13Moderate
Jun14Moderate
Jul15Moderate
Aug15Moderate
Sep17Moderate
Oct16Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is San Mariano?

San Mariano sits at 7.5°N, 126.0°E, 224 m above sea level, in Philippines. The nearest listed city is Nabunturan, 13 km away.

Topography around San Mariano

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

Within 3 km, the terrain around San Mariano has significant variations in elevation — a maximum elevation change of 586 m around an average of 246 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,307 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,636 m.

The land around San Mariano is covered by trees (96%) within 3 km, trees (91%) within 16 km, and trees (74%) and water (21%) within 80 km.

3 km
586 m
16 km
1,307 m
80 km
2,636 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Nabunturan 13 km · Compostela 22 km · New Corella 22 km · Maco 22 km · Magugpo Poblacion 22 km · Cabayangan 31 km · Monkayo 36 km · Panabo 41 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 Mariano (7.5°, 126°, elevation 224 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).