Oas weather in January

In January, Oas sees average daytime highs of 29°C and overnight lows near 23°C, with 108 mm of rain across 14.8 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 9th-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 15% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 12 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is Oas's 4th-clearest and 1st-windiest month. For the whole year in context, see Oas's year-round climate.

Daytime high
29°
12th warmest
Overnight low
23°
2nd coldest
Rainfall
108 mm
14.8 wet days
Daylight
11 h 18 min
6:16 AM – 5:34 PM
Cloud cover
68%
4th clearest
Wind
9 km/h
1st windiest
Solar energy
4.34 kWh/m²
Travel score
4.9
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 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 Oas reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°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, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923
312923

How January really feels in Oas

Once humidity and wind are folded in, January averages 23 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
23
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Oas weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 23% of January, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23961
34060
44060
53961
63961
73961
83862
93763
103763
113664
123664
133664
143565
153565
163565
173565
183664
193763
203763
213763
223961
233961
244060
254159
264159
274258
284258
294258
304258
314258

Chance of precipitation in January

Any precipitation

Oas gets around 108 mm of rain over 14.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 48% and peaks near 51% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
151
251
350
450
550
650
750
850
951
1050
1150
1250
1350
1450
1550
1650
1749
1849
1948
2048
2147
2246
2346
2445
2544
2643
2743
2843
2943
3043
3143

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11106722
21106821
3197020
4197119
5097417
6097516
7097516
8097615
9097714
100107614
110107713
120107713
130107812
140107812
150107812
160107812
170117712
180117712
190117712
200127612
210127612
220137512
230137611
240147511
250147511
260147511
270157411
280157411
290157510
300157510
310157510

Wind in January

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

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 12 min at the start of January to 11 h 24 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 6:12 AM to 6:17 AM, and sunset from 5:26 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:125:26
211.26:135:27
311.26:135:27
411.26:135:28
511.26:145:28
611.26:145:29
711.36:145:29
811.36:155:30
911.36:155:30
1011.36:155:31
1111.36:155:32
1211.36:165:32
1311.36:165:33
1411.36:165:33
1511.36:165:34
1611.36:165:34
1711.36:175:35
1811.36:175:35
1911.36:175:36
2011.36:175:36
2111.36:175:37
2211.36:175:37
2311.36:175:38
2411.46:175:38
2511.46:175:39
2611.46:175:39
2711.46:175:40
2811.46:175:40
2911.46:175:41
3011.46:175:41
3111.46:175:42

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.34 kWh/m².

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 — January's 4.34 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.3Bright
184.3Bright
194.3Bright
204.4Bright
214.4Bright
224.4Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.6Bright
284.6Bright
294.6Bright
304.7Bright
314.7Bright
Planning a trip in January

Hazard calendar for Oas

In seasonPeak

In January, 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 January a good time to visit Oas?

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

4.9
Sightseeing
1st-best month of the year
6.1
Beach & pool
3rd-best month of the year

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

What to pack for Oas in January

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

In January, Oas sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 15 days see rain.

light clothesrain gear

Sea temperature near Oas in January

The nearest coast averages about 26°C in January — 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 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 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 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 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
January 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).