Rosario weather in August

In August, Rosario sees average daytime highs of 30°C and overnight lows near 25°C, with 270 mm of rain across 26 wet days and about 12.5 hours of daylight. It is the 6th-warmest and 3rd-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 36 min at the start of August to 12 h 18 min by month's end. Set against the rest of the year, August is Rosario's 12th-clearest and 8th-windiest month. For the whole year in context, see Rosario's year-round climate.

Daytime high
30°
6th warmest
Overnight low
25°
9th coldest
Rainfall
270 mm
26 wet days
Daylight
12 h 30 min
5:45 AM – 6:13 PM
Cloud cover
89%
12th clearest
Wind
8 km/h
8th windiest
Solar energy
5.36 kWh/m²
Travel score
2.8
out of 10

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 Rosario reaches about 30°C in the afternoon and slips back to 25°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)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123025
133025
143025
153025
163025
173025
183025
193025
203025
213025
223025
233025
243125
253125
263125
273125
283125
293125
303125
313125

How August really feels in Rosario

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.

Rosario weather by month

How August compares with the rest of the year at a glance. August is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°4910.211.35.6
Feb29° / 23°447.611.55.5
Mar31° / 24°509.811.94.8
Apr32° / 25°5210.612.33.8
May33° / 25°15020.812.62.8
Jun32° / 25°21924.912.82.6
Jul31° / 25°33927.712.72.7
Aug30° / 25°2702612.52.8
Sep30° / 24°32927.112.12.7
Oct30° / 24°23624.611.73.2
Nov30° / 24°14519.911.43.9
Dec29° / 24°1871711.24.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in August, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of August, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2793
3793
4793
5793
6892
7892
8991
9991
10991
11991
121090
131090
141090
151090
161090
171090
181090
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
311090

Chance of precipitation in August

Any precipitation

Rosario gets around 270 mm of rain over 26 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 84% and peaks near 90% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
289
388
486
585
684
783
883
982
1081
1181
1281
1381
1481
1581
1681
1782
1883
1983
2084
2184
2285
2385
2485
2585
2685
2785
2885
2985
3085
3185

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11189
21090
31090
41090
51090
61090
7991
81090
91090
101090
111090
121090
131189
141189
151189
161189
171189
181189
191189
201189
211189
221090
231090
241090
25991
26991
27991
28991
29892
30892
31892

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.

0246810151015202531
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
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 36 min at the start of August to 12 h 18 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 5:43 AM to 5:47 AM, and sunset from 6:19 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:436:19
212.65:436:19
312.65:436:19
412.65:436:18
512.65:446:18
612.65:446:18
712.65:446:17
812.55:446:17
912.55:446:16
1012.55:456:16
1112.55:456:15
1212.55:456:15
1312.55:456:15
1412.55:456:14
1512.55:456:13
1612.55:456:13
1712.45:466:12
1812.45:466:12
1912.45:466:11
2012.45:466:11
2112.45:466:10
2212.45:466:09
2312.45:466:09
2412.45:466:08
2512.45:466:08
2612.35:466:07
2712.35:476:06
2812.35:476:06
2912.35:476:05
3012.35:476:04
3112.35:476:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.36 kWh/m².

For context, solar energy here swings from a low near 4.14 kWh/m² to a high of 6.7 kWh/m² in April across the year — August's 5.36 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in August

Hazard calendar for Rosario

In seasonPeak

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

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

Rosario's rainy season runs June–October, 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 Rosario?

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

2.8
Sightseeing
8th-best month of the year
4.1
Beach & pool
9th-best month of the year

August is a weaker month for outdoor sightseeing in Rosario.

What to pack for Rosario in August

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

In August, Rosario sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Rosario 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 offshore 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
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Rosario in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Rosario peaks around August 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 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 highAug 17UV 14Dec 11UV 9
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar12Extreme
Apr13Extreme
May13Extreme
Jun13Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec9Very high
Location & terrain

Where is Rosario?

Rosario sits at 13.6°N, 121.2°E, 13 m above sea level, in Philippines. The nearest listed city is Batangas, 22 km away.

Topography around Rosario

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

Within 3 km, the terrain around Rosario has significant variations in elevation — a maximum elevation change of 299 m around an average of 24 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 986 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,538 m.

The land around Rosario is covered by trees (47%) and water (40%) within 3 km, trees (50%) and water (48%) within 16 km, and trees (44%) and water (44%) within 80 km.

3 km
299 m
16 km
986 m
80 km
2,538 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
August weather nearby: Batangas 22 km · Calapan 25 km · Bauan 29 km · San Pascual 29 km · Puerto Galera 32 km · Lipa City 35 km · Cuenca 35 km · Bignay Uno 39 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 Rosario (13.6323°, 121.2207°, elevation 13 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).