Isabela weather in August

In August, Isabela sees average daytime highs of 30°C and overnight lows near 24°C, with 293 mm of rain across 27.7 wet days and about 12.3 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 2% of the time in August, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of August to 12 h 12 min by month's end. Set against the rest of the year, August is Isabela's 10th-clearest and 4th-windiest month. For the whole year in context, see Isabela's year-round climate.

Daytime high
30°
9th warmest
Overnight low
24°
8th coldest
Rainfall
293 mm
27.7 wet days
Daylight
12 h 18 min
5:42 AM – 6:02 PM
Cloud cover
88%
10th clearest
Wind
8 km/h
4th windiest
Solar energy
4.77 kWh/m²
Travel score
2.7
out of 10

Isabela is municipality of the Philippines in the province of Negros Occidental.

Density
89/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical August day in Isabela reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, August runs on par with July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024
313024

How August really feels in Isabela

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

Isabela weather by month

How August compares with the rest of the year at a glance. August is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°8813.211.54.4
Feb31° / 23°819.911.74.4
Mar32° / 24°7810.511.94.0
Apr33° / 25°7911.412.23.2
May33° / 25°1952412.52.5
Jun31° / 24°29627.912.62.4
Jul30° / 24°34129.312.52.6
Aug30° / 24°29327.712.32.7
Sep30° / 24°30928.412.12.6
Oct30° / 24°27528.211.82.7
Nov31° / 24°16820.511.53.3
Dec30° / 24°1681811.43.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 6% of August, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3595
4694
5694
6694
7793
8793
9892
10991
11991
12991
13991
14991
15991
161090
17892
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
31991

Chance of precipitation in August

Any precipitation

Isabela gets around 293 mm of rain over 27.7 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
290
389
489
588
687
787
887
987
1087
1187
1287
1387
1488
1589
1689
1790
1891
1991
2092
2192
2292
2392
2492
2592
2693
2793
2893
2993
3093
3193

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12377
22278
32278
42278
52278
62278
72278
82278
92278
102278
112278
122179
132179
142179
152080
162080
172080
182080
192080
202080
212080
221981
231981
241981
251981
261882
271882
281882
291882
301882
311882

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 30 min at the start of August to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over August. Sunrise moves from 5:41 AM to 5:42 AM, and sunset from 6:08 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:416:08
212.45:416:07
312.45:416:07
412.45:416:07
512.45:416:07
612.45:416:06
712.45:416:06
812.45:416:06
912.45:416:05
1012.45:426:05
1112.45:426:04
1212.45:426:04
1312.45:426:04
1412.45:426:03
1512.35:426:03
1612.35:426:02
1712.35:426:02
1812.35:426:01
1912.35:426:01
2012.35:426:00
2112.35:426:00
2212.35:425:59
2312.35:425:59
2412.35:425:58
2512.35:425:58
2612.35:425:57
2712.25:425:57
2812.25:425:56
2912.25:425:55
3012.25:425:55
3112.25:425:54

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.77 kWh/m².

For context, solar energy here swings from a low near 4.22 kWh/m² to a high of 6.17 kWh/m² in April across the year — August's 4.77 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Isabela

In seasonPeak

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

Isabela sits in the Pacific typhoon belt; the season peaks July–October.

Isabela's rainy season runs May–December, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Isabela?

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

2.7
Sightseeing
7th-best month of the year
3.8
Beach & pool
9th-best month of the year

August is a weaker month for outdoor sightseeing in Isabela.

What to pack for Isabela in August

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

In August, Isabela sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Isabela in August

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

The sea at the nearest coast (about 15 km away) is warmest in June at about 30°C and coldest in February near 27°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Isabela in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Isabela peaks around March 24 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 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 highMar 24UV 14Nov 21UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec10Very high

Air quality in Isabela in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Isabela is worst in September — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 2317 µg/m³Feb 1113 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb13Moderate
Mar14Moderate
Apr15Moderate
May16Moderate
Jun16Moderate
Jul17Moderate
Aug16Moderate
Sep17Moderate
Oct17Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Isabela?

Isabela sits at 10.2°N, 123.0°E, 30 m above sea level, in Philippines. The nearest listed city is Tinongan, 5.0 km away.

Topography around Isabela

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

Within 3 km, the terrain around Isabela has significant variations in elevation — a maximum elevation change of 323 m around an average of 30 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,233 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,458 m.

The land around Isabela is covered by cropland (61%) and trees (32%) within 3 km, trees (50%) and cropland (38%) within 16 km, and trees (45%) and water (41%) within 80 km.

3 km
323 m
16 km
1,233 m
80 km
2,458 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Tinongan 5.0 km · La Castellana 14 km · Binalbagan 14 km · Hinigaran 17 km · Himamaylan 17 km · Suay 23 km · La Carlota 25 km · Kabankalan 31 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 Isabela (10.2048°, 122.9888°, elevation 30 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).