City of Isabela weather in April

In April, City of Isabela sees average daytime highs of 29°C and overnight lows near 25°C, with 118 mm of rain across 22 wet days and about 12.1 hours of daylight. It is the 1st-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 19% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of April to 12 h 12 min by month's end. Set against the rest of the year, April is City of Isabela's 2nd-clearest and 12th-windiest month. For the whole year in context, see City of Isabela's year-round climate.

Daytime high
29°
1st warmest
Overnight low
25°
11th coldest
Rainfall
118 mm
22 wet days
Daylight
12 h 06 min
5:48 AM – 5:57 PM
Cloud cover
67%
2nd clearest
Wind
6 km/h
12th windiest
Solar energy
6.25 kWh/m²
Travel score
3.8
out of 10

City of Isabela is city of the Philippines in the province of Basilan.

Density
301/km²
people per km²
Founded
1848

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical April day in City of Isabela reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, April runs on par with March and on par with May.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926

How April really feels in City of Isabela

Once humidity and wind are folded in, April averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

City of Isabela weather by month

How April compares with the rest of the year at a glance. April is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°1151711.74.8
Feb28° / 25°9413.911.84.9
Mar29° / 25°10417.7124.6
Apr29° / 25°1182212.13.8
May29° / 26°18326.112.33.4
Jun28° / 25°22426.112.43.5
Jul28° / 25°20426.212.43.8
Aug28° / 25°17824.812.23.9
Sep28° / 25°16923.6123.8
Oct28° / 25°21226.311.93.6
Nov28° / 25°1762411.73.7
Dec28° / 25°14122.411.64.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 19% of April, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24456
34456
44456
54456
64456
74555
84555
94456
104456
114357
124159
134159
144060
153961
163961
173763
183664
193565
203466
213367
223268
233268
243268
253169
263268
273268
283169
293169
303070

Chance of precipitation in April

Any precipitation

City of Isabela gets around 118 mm of rain over 22 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 75% and peaks near 81% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
166
267
367
467
567
668
768
868
969
1070
1171
1272
1373
1474
1575
1676
1777
1878
1978
2079
2180
2280
2380
2481
2581
2681
2781
2881
2981
3081

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 77% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
18911
28911
38812
48713
58614
68614
78515
88416
98317
108218
118119
128119
138020
147921
157822
167723
177624
187525
197426
207327
217228
227129
237030
246931
256733
266634
276436
286337
296139
306040

Wind in April

Winds average 6 km/h in April, the calmest month.

Across April, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 06 min at the start of April to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over April. Sunrise moves from 5:55 AM to 5:43 AM, and sunset from 5:58 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:555:58
212.15:555:58
312.15:545:58
412.15:545:58
512.15:535:58
612.15:535:58
712.15:525:58
812.15:525:58
912.15:515:57
1012.15:515:57
1112.15:505:57
1212.15:505:57
1312.15:495:57
1412.15:495:57
1512.15:485:57
1612.15:485:57
1712.25:475:57
1812.25:475:57
1912.25:475:57
2012.25:465:56
2112.25:465:56
2212.25:455:56
2312.25:455:56
2412.25:455:56
2512.25:445:56
2612.25:445:56
2712.25:445:56
2812.25:435:56
2912.25:435:56
3012.25:435:56

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.25 kWh/m².

For context, solar energy here swings from a low near 5.11 kWh/m² to a high of 6.26 kWh/m² in March across the year — April's 6.25 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.0Intense
256.0Intense
266.0Intense
276.0Bright
286.0Bright
295.9Bright
305.9Bright
Planning a trip in April

Hazard calendar for City of Isabela

In seasonPeak

In April, City of Isabela sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

City of Isabela 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 April a good time to visit City of Isabela?

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

3.8
Sightseeing
6th-best month of the year
4.9
Beach & pool
4th-best month of the year

April is a weaker month for outdoor sightseeing in City of Isabela.

What to pack for City of Isabela in April

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

In April, City of Isabela sees daytime highs around 29°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near City of Isabela in April

The nearest coast averages about 29°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in June at about 29°C and coldest in February near 28°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Warm
Mar28Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in City of Isabela in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in City of Isabela peaks around March 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 17UV 14Nov 22UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec10Extreme

Air quality in City of Isabela in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in City of Isabela is worst in March — around 39 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (August, 15 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1938 µg/m³Aug 1015 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb33Moderate
Mar39Poor
Apr36Poor
May25Moderate
Jun19Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct26Moderate
Nov30Moderate
Dec28Moderate
Location & terrain

Where is City of Isabela?

City of Isabela sits at 6.7°N, 122.0°E, 10 m above sea level, in Philippines. The nearest listed city is Maluso, 21 km away.

SioconJoloIpilPagadian

Topography around City of Isabela

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

Within 3 km, the terrain around City of Isabela has only modest variations in elevation — a maximum elevation change of 187 m around an average of 38 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 942 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,347 m.

The land around City of Isabela is covered by trees (60%) and water (21%) within 3 km, trees (49%) and water (48%) within 16 km, and water (83%) within 80 km.

3 km
187 m
16 km
942 m
80 km
1,347 m
treesgrasslandartificial surfaceswatermangroves
April weather nearby: Maluso 21 km · Zamboanga City 26 km · Recodo 28 km · Al-Barka 33 km · Siocon 113 km · Jolo 129 km · Ipil 138 km · Pagadian 204 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 City of Isabela (6.7041°, 121.9712°, elevation 10 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).