Ilagan weather in January

In January, Ilagan sees average daytime highs of 25°C and overnight lows near 19°C, with 119 mm of rain across 20.4 wet days and about 11.1 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 6% of the time in January, and the air most often feels muggy.

Daylight stretches from about 11 hours at the start of January to 11 h 12 min by month's end. Set against the rest of the year, January is Ilagan's 6th-clearest and 4th-windiest month. For the whole year in context, see Ilagan's year-round climate.

Daytime high
25°
12th warmest
Overnight low
19°
1st coldest
Rainfall
119 mm
20.4 wet days
Daylight
11 h 06 min
6:29 AM – 5:34 PM
Cloud cover
76%
6th clearest
Wind
5 km/h
4th windiest
Solar energy
3 kWh/m²
Travel score
5.1
out of 10

Ilagan is city of the Philippines and capital of the province of Isabela.

Density
141/km²
people per km²
Founded
1686

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 25°C through the month.

A typical January day in Ilagan reaches about 25°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 28°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12519
22519
32519
42519
52519
62519
72519
82519
92519
102519
112519
122519
132519
142519
152519
162519
172519
182519
192519
202519
212519
222519
232519
242519
252519
262519
272519
282519
292519
302519
312519

How January really feels in Ilagan

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.

Ilagan 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
Jan25° / 19°11920.411.15.1
Feb26° / 19°10618.411.45.1
Mar28° / 20°10217.911.95.2
Apr30° / 22°11617.112.44.1
May31° / 23°23324.112.82.9
Jun32° / 23°23025.9132.5
Jul31° / 23°36428.712.92.6
Aug30° / 23°32928.312.62.6
Sep30° / 23°30126.912.12.9
Oct28° / 22°26725.611.63.7
Nov27° / 21°2632411.24.2
Dec25° / 20°31324.8114.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
21981
32080
42080
52179
62179
72179
82179
92278
102278
112278
122278
132278
142278
152476
162476
172476
182476
192476
202476
212476
222476
232476
242476
252476
262476
272377
282377
292377
302278
312278

Chance of precipitation in January

Any precipitation

Ilagan gets around 119 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 71% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
171
271
370
469
568
667
766
866
965
1065
1164
1264
1364
1464
1564
1664
1764
1865
1965
2065
2165
2266
2366
2466
2566
2667
2767
2867
2967
3067
3167

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11186318
21186417
31186516
41186615
51196614
61196614
71196614
81206613
91206613
101206613
111206514
121206514
131216414
141216414
151216414
161216414
171216414
181216414
191216414
201216414
211216414
221216414
231216414
241216513
251216513
262216413
272226313
282226412
292226412
302226412
311236511

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 km/h on the calmest days to 5 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
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 hours at the start of January to 11 h 12 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 6:26 AM to 6:29 AM, and sunset from 5:25 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:265:25
211.06:265:26
311.06:275:26
411.06:275:27
511.06:275:28
611.06:275:28
711.06:285:29
811.06:285:29
911.06:285:30
1011.06:285:31
1111.06:295:31
1211.06:295:32
1311.16:295:32
1411.16:295:33
1511.16:295:33
1611.16:295:34
1711.16:295:35
1811.16:305:35
1911.16:305:36
2011.16:305:36
2111.16:305:37
2211.16:305:38
2311.16:305:38
2411.26:305:39
2511.26:305:39
2611.26:305:40
2711.26:295:40
2811.26:295:41
2911.26:295:42
3011.26:295:42
3111.26:295:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3 kWh/m².

For context, solar energy here swings from a low near 2.54 kWh/m² to a high of 5.99 kWh/m² in June across the year — January's 3 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.9Moderate
102.9Moderate
112.9Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
233.0Moderate
243.0Moderate
253.1Moderate
263.1Moderate
273.1Moderate
283.1Moderate
293.1Moderate
303.1Moderate
313.2Moderate
Planning a trip in January

Hazard calendar for Ilagan

In seasonPeak

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

Ilagan 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 Ilagan?

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

5.1
Sightseeing
2nd-best month of the year
4.5
Beach & pool
4th-best month of the year

January is a reasonable time to visit Ilagan for sightseeing.

What to pack for Ilagan in January

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

In January, Ilagan sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 20 days see rain.

rain gearlight clothes

Sea temperature near Ilagan 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 57 km away) is warmest in June at about 30°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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Tropical
May29Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct29Tropical
Nov28Warm
Dec27Warm

UV index in Ilagan in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Ilagan peaks around August 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 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 19UV 14Dec 11UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr13Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct10Extreme
Nov8Very high
Dec8Very high
Location & terrain

Where is Ilagan?

Ilagan sits at 17.1°N, 121.9°E, 55 m above sea level, in Philippines. The nearest listed city is Roxas, 29 km away.

Topography around Ilagan

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

Within 3 km, the terrain around Ilagan has only modest variations in elevation — a maximum elevation change of 85 m around an average of 36 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 722 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,277 m.

The land around Ilagan is covered by cropland (63%) within 3 km, cropland (57%) and trees (32%) within 16 km, and trees (55%) and cropland (23%) within 80 km.

3 km
85 m
16 km
722 m
80 km
2,277 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Roxas 29 km · Cabagan 34 km · San Mateo 44 km · Alicia 46 km · Tuguegarao 55 km · Ramon 55 km · Tabuk 58 km · Solana 60 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 Ilagan (17.1485°, 121.8892°, elevation 55 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).