Ilagan weather in May

In May, Ilagan sees average daytime highs of 31°C and overnight lows near 23°C, with 233 mm of rain across 24.1 wet days and about 12.8 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 11% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of May to 12 h 54 min by month's end. Set against the rest of the year, May is Ilagan's 4th-clearest and 10th-windiest month. For the whole year in context, see Ilagan's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
23°
9th coldest
Rainfall
233 mm
24.1 wet days
Daylight
12 h 48 min
5:25 AM – 6:13 PM
Cloud cover
74%
4th clearest
Wind
4 km/h
10th windiest
Solar energy
5.87 kWh/m²
Travel score
2.9
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 May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical May day in Ilagan reaches about 31°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, May runs about 1°C warmer than April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13122
23122
33122
43122
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303223
313223

How May really feels in Ilagan

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

Ilagan weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 7th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 70%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24555
34555
44357
54258
64060
74060
83961
93664
103565
113565
123367
133268
143169
153070
162971
172773
182674
192575
202476
212476
222278
232278
242179
252080
262080
271981
281981
291981
302080
312080

Chance of precipitation in May

Any precipitation

Ilagan gets around 233 mm of rain over 24.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 77% and peaks near 87% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
161
262
363
464
565
667
768
869
970
1071
1172
1273
1375
1476
1577
1679
1780
1881
1982
2083
2184
2285
2385
2486
2586
2687
2787
2887
2987
3086
3186

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
18911
28902
37912
47912
56913
66913
76913
85914
95914
104915
114906
124906
133907
143907
153898
162908
172899
182899
1918910
2018811
2118811
2218712
2318712
2418613
2518514
2618415
2718415
2808416
2908317
3008218
3108119

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 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
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:31 AM to 5:22 AM, and sunset from 6:08 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:316:08
212.65:316:08
312.65:306:09
412.75:306:09
512.75:296:09
612.75:296:09
712.75:286:10
812.75:286:10
912.75:276:10
1012.75:276:11
1112.75:276:11
1212.85:266:11
1312.85:266:12
1412.85:256:12
1512.85:256:12
1612.85:256:13
1712.85:246:13
1812.85:246:13
1912.85:246:14
2012.85:246:14
2112.95:236:14
2212.95:236:15
2312.95:236:15
2412.95:236:16
2512.95:226:16
2612.95:226:16
2712.95:226:17
2812.95:226:17
2912.95:226:17
3012.95:226:18
3112.95:226:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.87 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 — May's 5.87 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Bright
106.0Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Hazard calendar for Ilagan

In seasonPeak

In May, 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 May a good time to visit Ilagan?

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

2.9
Sightseeing
8th-best month of the year
4.5
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Ilagan.

What to pack for Ilagan in May

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

In May, Ilagan sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Ilagan in May

The nearest coast averages about 29°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 13 (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
May 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).