Bulan weather in January

In January, Bulan sees average daytime highs of 28°C and overnight lows near 24°C, with 172 mm of rain across 20.4 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 8th-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 15% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 11 h 18 min at the start of January to 11 h 24 min by month's end. Set against the rest of the year, January is Bulan's 5th-clearest and 1st-windiest month. For the whole year in context, see Bulan's year-round climate.

Daytime high
28°
12th warmest
Overnight low
24°
2nd coldest
Rainfall
172 mm
20.4 wet days
Daylight
11 h 18 min
6:14 AM – 5:34 PM
Cloud cover
72%
5th clearest
Wind
19 km/h
1st windiest
Solar energy
4.36 kWh/m²
Travel score
4.8
out of 10

Bulan is municipality of the Philippines in the province of Sorsogon.

Density
145/km²
people per km²

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 28°C through the month.

A typical January day in Bulan reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824
312824

How January really feels in Bulan

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.

Bulan weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°17220.411.34.8
Feb28° / 24°10715.711.65.0
Mar29° / 24°9015.611.94.9
Apr30° / 25°5912.212.34.7
May31° / 26°12818.812.63.6
Jun31° / 26°19124.412.72.9
Jul30° / 25°28427.612.72.8
Aug30° / 26°22225.212.43.1
Sep30° / 25°2482612.12.9
Oct30° / 25°21826.311.73.1
Nov29° / 25°18824.211.43.5
Dec28° / 25°24823.511.34.0

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 19% of January, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23169
33169
43268
53169
63169
73169
83268
93268
103169
113169
123268
133268
143268
153268
163367
173367
183367
193367
203466
213466
223565
233565
243664
253763
263763
273763
283862
293763
303862
313862

Chance of precipitation in January

Any precipitation

Bulan gets around 172 mm of rain over 20.4 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 66% and peaks near 69% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
169
269
369
469
569
669
769
869
969
1068
1168
1268
1368
1467
1567
1667
1766
1866
1966
2065
2165
2264
2363
2463
2563
2662
2762
2862
2962
3062
3161

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 64% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
184745
284943
385141
485339
585537
675835
775934
876132
976231
1076330
1176429
1276528
1376627
1476726
1576726
1676726
1786725
1886725
1986725
2086824
2186824
2296724
2396823
2496823
2596922
26106822
27106822
28106921
29106921
30106921
31107020

Wind in January

Winds average 19 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 18 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 6 minutes over January. Sunrise moves from 6:10 AM to 6:15 AM, and sunset from 5:26 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:105:26
211.36:105:26
311.36:105:27
411.36:115:27
511.36:115:28
611.36:115:28
711.36:125:29
811.36:125:29
911.36:125:30
1011.36:135:30
1111.36:135:31
1211.36:135:32
1311.36:135:32
1411.36:145:33
1511.36:145:33
1611.36:145:34
1711.36:145:34
1811.36:145:35
1911.36:145:35
2011.46:145:36
2111.46:155:36
2211.46:155:37
2311.46:155:37
2411.46:155:38
2511.46:155:38
2611.46:155:39
2711.46:155:39
2811.46:155:40
2911.46:155:40
3011.46:155:41
3111.46:155:41

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.36 kWh/m².

For context, solar energy here swings from a low near 4.02 kWh/m² to a high of 6.33 kWh/m² in April across the year — January's 4.36 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.3Bright
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
304.6Bright
314.7Bright
Planning a trip in January

Hazard calendar for Bulan

In seasonPeak

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

Bulan 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 January a good time to visit Bulan?

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

4.8
Sightseeing
3rd-best month of the year
5.1
Beach & pool
5th-best month of the year

January is a reasonable time to visit Bulan for sightseeing.

What to pack for Bulan in January

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

In January, Bulan sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. About 20 days see rain.

light clothesrain gear

Sea temperature near Bulan 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 offshore is warmest in June at about 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Warm
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Bulan 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 Bulan peaks around April 16 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 highApr 16UV 14Dec 15UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr14Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Bulan 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 Bulan is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (April, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1720 µg/m³Apr 169 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar11Good
Apr9Good
May11Good
Jun16Moderate
Jul20Moderate
Aug17Moderate
Sep18Moderate
Oct17Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Bulan?

Bulan sits at 12.7°N, 123.9°E, 5 m above sea level, in Philippines. The nearest listed city is Irosin, 17 km away.

Topography around Bulan

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

Within 3 km, the terrain around Bulan has only modest variations in elevation — a maximum elevation change of 37 m around an average of 5 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 820 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,412 m.

The land around Bulan is covered by water (44%), trees (24%) and cropland (20%) within 3 km, water (57%) and trees (37%) within 16 km, and water (61%) and trees (33%) within 80 km.

3 km
37 m
16 km
820 m
80 km
2,412 m
treesgrasslandcroplandartificial surfaceswatermangroves
January weather nearby: Irosin 17 km · Sorsogon 36 km · Gubat 39 km · Donsol 40 km · Masbate 43 km · Legaspi 54 km · Tagas 58 km · Malilipot 73 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 Bulan (12.6714°, 123.875°, elevation 5 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).