Oas weather in December

In December, Oas sees average daytime highs of 29°C and overnight lows near 24°C, with 193 mm of rain across 19.5 wet days and about 11.2 hours of daylight. It is the 11th-warmest and 7th-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 17% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 18 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Oas's 5th-clearest and 2nd-windiest month. For the whole year in context, see Oas's year-round climate.

Daytime high
29°
11th warmest
Overnight low
24°
4th coldest
Rainfall
193 mm
19.5 wet days
Daylight
11 h 12 min
6:05 AM – 5:19 PM
Cloud cover
71%
5th clearest
Wind
9 km/h
2nd windiest
Solar energy
3.98 kWh/m²
Travel score
4.1
out of 10

Oas is municipality of the Philippines in the province of Albay.

Density
246/km²
people per km²
Founded
1605

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

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 Oas reaches about 29°C in the afternoon and slips back to 24°C overnight — a 6°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 about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923
312923

How December really feels in Oas

Once humidity and wind are folded in, December 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 December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Oas weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°10814.811.34.9
Feb29° / 23°801111.64.9
Mar31° / 23°7912.911.94.4
Apr32° / 24°6611.712.33.7
May32° / 25°20321.612.62.8
Jun31° / 25°3172712.82.4
Jul30° / 25°47430.112.72.4
Aug30° / 25°42529.812.42.5
Sep30° / 24°41328.912.12.5
Oct31° / 24°2702711.72.8
Nov30° / 24°17020.611.43.6
Dec29° / 24°19319.511.24.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23763
33763
43763
53763
63664
73664
83664
93763
103763
113763
123664
133664
143664
153664
163565
173565
183664
193664
203565
213565
223565
233664
243565
253664
263664
273763
283763
293862
303862
313961

Chance of precipitation in December

Any precipitation

Oas gets around 193 mm of rain over 19.5 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 63% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
266
367
468
569
669
770
870
970
1070
1170
1269
1369
1468
1566
1665
1764
1862
1961
2060
2159
2258
2357
2456
2555
2654
2754
2853
2953
3052
3152

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 51% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1014059
2014158
3014158
4014257
5014257
6014257
7014356
8014356
9014455
10014455
11014554
12014653
13014752
14014851
15024950
16025048
17035047
18035245
19045343
20055342
21055540
22065638
23075736
24075934
25085933
26086131
27196030
28196228
29196327
301106425
311106524

Wind in December

Winds average 9 km/h in December.

Across December, 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 December

DaylightNight

Daylight runs from about 11 h 18 min at the start of December to 11 h 12 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 5:58 AM to 6:12 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)
111.35:585:14
211.35:585:14
311.35:595:14
411.35:595:15
511.36:005:15
611.36:005:15
711.26:015:16
811.26:015:16
911.26:025:16
1011.26:025:17
1111.26:035:17
1211.26:035:17
1311.26:045:18
1411.26:045:18
1511.26:055:18
1611.26:055:19
1711.26:065:19
1811.26:065:20
1911.26:075:20
2011.26:075:21
2111.26:085:21
2211.26:085:22
2311.26:095:22
2411.26:095:22
2511.26:105:23
2611.26:105:23
2711.26:115:24
2811.26:115:24
2911.26:125:25
3011.26:125:26
3111.26:125:26

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.98 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.98 kWh/m² to a high of 6.42 kWh/m² in April across the year — December's 3.98 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.0Bright
84.0Bright
94.0Bright
104.0Bright
114.0Bright
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
274.1Bright
284.1Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in December

Hazard calendar for Oas

In seasonPeak

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

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

Oas's rainy season runs June–October, when most of the year's rain falls.

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

Is December a good time to visit Oas?

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

4.1
Sightseeing
4th-best month of the year
5.4
Beach & pool
5th-best month of the year

December is a reasonable time to visit Oas for sightseeing.

What to pack for Oas in December

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

In December, Oas sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. About 20 days see rain.

light clothesrain gear

Sea temperature near Oas in December

The nearest coast averages about 27°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 42 km away) is warmest in June at about 30°C and coldest in January near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Oas 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 Oas peaks around August 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 18UV 14Dec 15UV 9
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar12Extreme
Apr14Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Oas 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 Oas is worst in September — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (April, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateSep 921 µg/m³Apr 1210 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar12Good
Apr10Good
May14Moderate
Jun19Moderate
Jul20Moderate
Aug21Moderate
Sep21Moderate
Oct16Moderate
Nov12Moderate
Dec12Moderate
Location & terrain

Where is Oas?

Oas sits at 13.3°N, 123.5°E, 33 m above sea level, in Philippines. The nearest listed city is Polangui, 4.0 km away.

Topography around Oas

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

Within 3 km, the terrain around Oas has only modest variations in elevation — a maximum elevation change of 41 m around an average of 31 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,291 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,411 m.

The land around Oas is covered by cropland (67%) and trees (22%) within 3 km, trees (75%) within 16 km, and water (57%) and trees (35%) within 80 km.

3 km
41 m
16 km
1,291 m
80 km
2,411 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Polangui 4.0 km · Libon 8.0 km · San Jose 12 km · Bato 17 km · Buhi 19 km · Nabua 21 km · Iriga City 21 km · Baao 26 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 Oas (13.2593°, 123.4963°, elevation 33 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).