Climate and average weather in Ilagan
In Ilagan, the summers are muggy, hot, wet, and mostly cloudy and the winters are warm and mostly cloudy.
Over the course of the year, the temperature in Ilagan typically varies from 19°C to 32°C, and is rarely below 17°C or above 34°C. June is the hottest month of the year, while January is the coldest.
Based on the travel score, the best time of year to visit Ilagan for warm-weather activities is from mid November to mid April.
- Hottest
- Jun
- 32°
- Coldest
- Jan
- 19°
- Wettest
- Jul
- 364 mm
- Driest
- Mar
- 102 mm
- Rain / yr
- 2741 mm
- 282 wet days
- Daylight
- 11.0–13.0 h
- shortest–longest
- Elevation
- 55 m
- 17.1°N
- Clearest
- Apr
- 58% cloud
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.
Ilagan weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid November to mid April.
Temperature through the year
Daily average highs and lows in Ilagan, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Ilagan stay fairly even through the year, without a distinct hot or cool season. The warmest month is June, with an average high of 32°C and low of 23°C; the coolest is January, with an average low of 19°C and high of 25°C.
Days typically run about 7°C warmer than nights, with the widest day–night swing (around 9°C) in May.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 26 | 28 | 30 | 31 | 32 | 31 | 30 | 30 | 28 | 27 | 25 |
| Avg low (°C) | 19 | 19 | 20 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 25 | 19 |
| Feb | 26 | 19 |
| Mar | 28 | 20 |
| Apr | 30 | 22 |
| May | 31 | 23 |
| Jun | 32 | 23 |
| Jul | 31 | 23 |
| Aug | 30 | 23 |
| Sep | 30 | 23 |
| Oct | 28 | 22 |
| Nov | 27 | 21 |
| Dec | 25 | 20 |
How hot and cold Ilagan really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Ilagan feels like about 37°C (around June 14). About 184 days a year carry some heat stress, peaking in June.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 25 | 25 | 29 | 33 | 36 | 36 | 35 | 35 | 34 | 31 | 28 | 25 |
| Air high (°C) | 25 | 26 | 28 | 30 | 31 | 32 | 31 | 30 | 30 | 28 | 27 | 25 |
| Feels-like low (°C) | 19 | 19 | 20 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 | 20 |
| Air low (°C) | 19 | 19 | 20 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 | 20 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 25 | 25 | 19 | 19 |
| Feb | 25 | 26 | 19 | 19 |
| Mar | 29 | 28 | 20 | 20 |
| Apr | 33 | 30 | 22 | 22 |
| May | 36 | 31 | 23 | 23 |
| Jun | 36 | 32 | 23 | 23 |
| Jul | 35 | 31 | 23 | 23 |
| Aug | 35 | 30 | 23 | 23 |
| Sep | 34 | 30 | 23 | 23 |
| Oct | 31 | 28 | 22 | 22 |
| Nov | 28 | 27 | 21 | 21 |
| Dec | 25 | 25 | 20 | 20 |
Average hourly temperature in Ilagan
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on June afternoons, near 32°C, and coldest before dawn in January, near 19°C.
Ilagan weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 25° / 19° | 119 | 20.4 | 11.1 | 5.1 |
| Feb | 26° / 19° | 106 | 18.4 | 11.4 | 5.1 |
| Mar | 28° / 20° | 102 | 17.9 | 11.9 | 5.2 |
| Apr | 30° / 22° | 116 | 17.1 | 12.4 | 4.1 |
| May | 31° / 23° | 233 | 24.1 | 12.8 | 2.9 |
| Jun | 32° / 23° | 230 | 25.9 | 13 | 2.5 |
| Jul | 31° / 23° | 364 | 28.7 | 12.9 | 2.6 |
| Aug | 30° / 23° | 329 | 28.3 | 12.6 | 2.6 |
| Sep | 30° / 23° | 301 | 26.9 | 12.1 | 2.9 |
| Oct | 28° / 22° | 267 | 25.6 | 11.6 | 3.7 |
| Nov | 27° / 21° | 263 | 24 | 11.2 | 4.2 |
| Dec | 25° / 20° | 313 | 24.8 | 11 | 4.4 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Ilagan gets about 2741 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.
The wetter season lasts 7.3 months, from around May 16 to Dec 23, peaking in July at about 94% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Mar 18.
July is the wettest month by volume, with 364 mm over about 29 wet days; March is the driest, with 102 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 66 | 65 | 58 | 59 | 77 | 87 | 93 | 92 | 89 | 83 | 80 | 78 |
| Rain days | 20 | 18 | 18 | 17 | 24 | 26 | 29 | 28 | 27 | 26 | 24 | 25 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 66 | 20 |
| Feb | 65 | 18 |
| Mar | 58 | 18 |
| Apr | 59 | 17 |
| May | 77 | 24 |
| Jun | 87 | 26 |
| Jul | 93 | 29 |
| Aug | 92 | 28 |
| Sep | 89 | 27 |
| Oct | 83 | 26 |
| Nov | 80 | 24 |
| Dec | 78 | 25 |
Monthly rainfall
Over a full year, Ilagan collects about 2741 mm of rain across 282 wet days — roughly 228 mm in an average month.
It doesn’t fall evenly. July is the wettest month with 364 mm, while March is the driest at just 102 mm. The three wettest months alone bring about 37% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 119 | 106 | 102 | 116 | 233 | 230 | 364 | 329 | 301 | 267 | 263 | 313 |
| Rain days | 20 | 18 | 18 | 17 | 24 | 26 | 29 | 28 | 27 | 26 | 24 | 25 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 119 | 20 |
| Feb | 106 | 18 |
| Mar | 102 | 18 |
| Apr | 116 | 17 |
| May | 233 | 24 |
| Jun | 230 | 26 |
| Jul | 364 | 29 |
| Aug | 329 | 28 |
| Sep | 301 | 27 |
| Oct | 267 | 26 |
| Nov | 263 | 24 |
| Dec | 313 | 25 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Ilagan, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around February 7 and lasts for 3.3 months, ending around May 17. The clearest month is April, when the sky is clear, mostly clear, or partly cloudy 51% of the time on average.
The cloudier part of the year begins around June 27 and lasts for 3.8 months, ending around October 19. The cloudiest month is August, when it is overcast or mostly cloudy 89% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 22 | 33 | 45 | 51 | 30 | 25 | 16 | 11 | 17 | 26 | 30 | 20 |
| Cloudier (%) | 78 | 67 | 55 | 49 | 70 | 75 | 84 | 89 | 83 | 74 | 70 | 80 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 22 | 78 |
| Feb | 33 | 67 |
| Mar | 45 | 55 |
| Apr | 51 | 49 |
| May | 30 | 70 |
| Jun | 25 | 75 |
| Jul | 16 | 84 |
| Aug | 11 | 89 |
| Sep | 17 | 83 |
| Oct | 26 | 74 |
| Nov | 30 | 70 |
| Dec | 20 | 80 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 2, brings about 13 hours of light; the shortest, around January 1, only 11 hours — a swing of roughly 2 hours.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.1 | 11.4 | 11.9 | 12.4 | 12.8 | 13.0 | 12.9 | 12.6 | 12.1 | 11.6 | 11.2 | 11.0 |
| Sunrise (AM) | 6:29 | 6:24 | 6:06 | 5:41 | 5:25 | 5:22 | 5:30 | 5:39 | 5:44 | 5:49 | 6:02 | 6:19 |
| Sunset (PM) | 5:34 | 5:50 | 5:58 | 6:04 | 6:13 | 6:23 | 6:26 | 6:14 | 5:50 | 5:26 | 5:13 | 5:18 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 11.1 | 6:29 | 5:34 |
| Feb | 11.4 | 6:24 | 5:50 |
| Mar | 11.9 | 6:06 | 5:58 |
| Apr | 12.4 | 5:41 | 6:04 |
| May | 12.8 | 5:25 | 6:13 |
| Jun | 13.0 | 5:22 | 6:23 |
| Jul | 12.9 | 5:30 | 6:26 |
| Aug | 12.6 | 5:39 | 6:14 |
| Sep | 12.1 | 5:44 | 5:50 |
| Oct | 11.6 | 5:49 | 5:26 |
| Nov | 11.2 | 6:02 | 5:13 |
| Dec | 11.0 | 6:19 | 5:18 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Ilagan averages about 3 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 8 days.
The sunnier stretch runs 3.3 months, from around Feb 9 to May 18. The sunniest month is April, with roughly 7 sunny days (gloomy).
The greyest month is July, down near 2 sunny days — about 78% fewer than the April peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 2 | 3 | 6 | 7 | 4 | 3 | 2 | 1 | 1 | 3 | 3 | 2 |
| Sky | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 2 | Gloomy |
| Feb | 3 | Gloomy |
| Mar | 6 | Gloomy |
| Apr | 7 | Gloomy |
| May | 4 | Gloomy |
| Jun | 3 | Gloomy |
| Jul | 2 | Gloomy |
| Aug | 1 | Gloomy |
| Sep | 1 | Gloomy |
| Oct | 3 | Gloomy |
| Nov | 3 | Gloomy |
| Dec | 2 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
Ilagan is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.
The stickiest month is February, when it feels muggy, oppressive or miserable about 82% of the time. Even in January, the mildest month, the air is dry or comfortable only 1% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 20 | 17 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 10 |
| Muggy (%) | 64 | 65 | 51 | 18 | 3 | 0 | 0 | 0 | 1 | 14 | 25 | 52 |
| Oppressive (%) | 14 | 17 | 43 | 81 | 88 | 84 | 89 | 86 | 93 | 85 | 74 | 39 |
| Miserable (%) | 0 | 0 | 0 | 1 | 9 | 16 | 11 | 14 | 6 | 1 | 0 | 0 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| Jan | 1 | 20 | 64 | 14 | 0 |
| Feb | 1 | 17 | 65 | 17 | 0 |
| Mar | 0 | 6 | 51 | 43 | 0 |
| Apr | 0 | 0 | 18 | 81 | 1 |
| May | 0 | 0 | 3 | 88 | 9 |
| Jun | 0 | 0 | 0 | 84 | 16 |
| Jul | 0 | 0 | 0 | 89 | 11 |
| Aug | 0 | 0 | 0 | 86 | 14 |
| Sep | 0 | 0 | 1 | 93 | 6 |
| Oct | 0 | 0 | 14 | 85 | 1 |
| Nov | 0 | 2 | 25 | 74 | 0 |
| Dec | 0 | 10 | 52 | 39 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Wind in Ilagan is steady company: average speeds sit near 5 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 4 | 4 | 6 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 5 | calm |
| Feb | 5 | calm |
| Mar | 5 | calm |
| Apr | 5 | calm |
| May | 4 | calm |
| Jun | 5 | calm |
| Jul | 4 | calm |
| Aug | 4 | calm |
| Sep | 4 | calm |
| Oct | 6 | calm |
| Nov | 5 | calm |
| Dec | 5 | calm |
Hazard calendar for Ilagan
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Ilagan sits in the Pacific typhoon belt; the season peaks July–October.
Best time to visit Ilagan
To characterize how pleasant the weather is in Ilagan throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late November, Ilagan is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Ilagan for general outdoor tourist activities is from mid November to mid April, with a peak score in the second week of March.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 5.0 | 5.1 | 5.1 | 4.1 | 2.9 | 2.5 | 2.6 | 2.6 | 2.9 | 3.7 | 4.2 | 4.4 |
| Rating | fair | fair | fair | fair | poor | poor | poor | poor | poor | fair | fair | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 5.0 | fair |
| Feb | 5.1 | fair |
| Mar | 5.1 | fair |
| Apr | 4.1 | fair |
| May | 2.9 | poor |
| Jun | 2.5 | poor |
| Jul | 2.6 | poor |
| Aug | 2.6 | poor |
| Sep | 2.9 | poor |
| Oct | 3.7 | fair |
| Nov | 4.2 | fair |
| Dec | 4.4 | fair |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Ilagan for hot-weather activities is from early February to mid May, with a peak score in the first week of April.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Ilagan, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around June (highs near 32°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 25°C), pack light clothes and rain gear.
In June, Ilagan sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.
Sea temperature near Ilagan
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 26 | 27 | 28 | 29 | 30 | 30 | 30 | 29 | 29 | 28 | 27 |
| Comfort | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Tropical |
| May | 29 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Warm |
| Dec | 27 | Warm |
UV index (midday) in Ilagan by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 14 | 13 | 10 | 8 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 11 | Extreme |
| Mar | 12 | Extreme |
| Apr | 13 | Extreme |
| May | 13 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Average hourly UV index in Ilagan
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in August the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 7 | 7 | 8 | 8 | 8.5 | 8.5 | 8.5 | 8.5 | 8 | 7 | 6.5 | 6.5 |
| UV ≥ 6 (h/day) | 4.5 | 5 | 6 | 6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 5 | 4 | 3.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 7 | 4.5 |
| Feb | 7 | 5 |
| Mar | 8 | 6 |
| Apr | 8 | 6 |
| May | 8.5 | 6.5 |
| Jun | 8.5 | 6.5 |
| Jul | 8.5 | 6.5 |
| Aug | 8.5 | 6.5 |
| Sep | 8 | 6.5 |
| Oct | 7 | 5 |
| Nov | 6.5 | 4 |
| Dec | 6.5 | 3.5 |
Growing season
Ilagan is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Ilagan banks about 5,469 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around June.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 363 | 343 | 427 | 473 | 528 | 525 | 523 | 519 | 489 | 470 | 421 | 387 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 363 |
| Feb | 343 |
| Mar | 427 |
| Apr | 473 |
| May | 528 |
| Jun | 525 |
| Jul | 523 |
| Aug | 519 |
| Sep | 489 |
| Oct | 470 |
| Nov | 421 |
| Dec | 387 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Ilagan receives about 4.5 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.5 and 6.0 kWh/m².
The brighter stretch of the year lasts 6.7 months, from around Mar 10 to Sep 30. The brightest month is June, averaging about 6.0 kWh/m² (bright).
The dimmest month is December, down near 2.6 kWh/m² — roughly 56% less than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.0 | 3.6 | 4.8 | 5.8 | 5.9 | 6.0 | 5.4 | 5.2 | 4.9 | 4.1 | 3.3 | 2.5 |
| Level | Moderate | Moderate | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 3.0 | Moderate |
| Feb | 3.6 | Moderate |
| Mar | 4.8 | Bright |
| Apr | 5.8 | Bright |
| May | 5.9 | Bright |
| Jun | 6.0 | Bright |
| Jul | 5.4 | Bright |
| Aug | 5.2 | Bright |
| Sep | 4.9 | Bright |
| Oct | 4.1 | Bright |
| Nov | 3.3 | Moderate |
| Dec | 2.5 | Moderate |
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.
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
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).