Guarulhos weather in August

In August, Guarulhos sees average daytime highs of 23°C and overnight lows near 13°C, with 40 mm of rain across 5.2 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 48% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of August to 11 h 30 min by month's end. Set against the rest of the year, August is Guarulhos's 1st-clearest and 5th-windiest month. For the whole year in context, see Guarulhos's year-round climate.

Daytime high
23°
9th warmest
Overnight low
13°
2nd coldest
Rainfall
40 mm
5.2 wet days
Daylight
11 h 12 min
7:35 AM – 6:46 PM
Cloud cover
47%
1st clearest
Wind
10 km/h
5th windiest
Solar energy
4.28 kWh/m²
Travel score
7.8
out of 10

Guarulhos is settlement in Brazil.

Air quality
Elevated
PM2.5 15.2 µg/m³ · 2019

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 24°C by the end.

A typical August day in Guarulhos reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 28°C. Set against its neighbours, August runs about 1°C warmer than July and about 1°C cooler than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32313
42313
52313
62313
72313
82313
92313
102313
112313
122313
132313
142313
152313
162313
172313
182313
192313
202413
212413
222413
232413
242413
252413
262414
272414
282414
292414
302414
312414

Guarulhos weather by month

How August compares with the rest of the year at a glance. August is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°23223.813.34.3
Feb28° / 19°17920.212.84.5
Mar27° / 19°15420.112.25.0
Apr25° / 17°6410.711.56.6
May23° / 14°647.810.97.1
Jun22° / 13°475.610.67.5
Jul22° / 12°545.610.77.5
Aug23° / 13°405.211.27.8
Sep24° / 15°909.811.96.9
Oct25° / 16°11614.712.65.9
Nov25° / 17°15216.813.15.4
Dec27° / 18°18120.913.44.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26040
35941
45941
55941
65941
75941
85941
95941
105941
116040
125941
135941
145941
155941
166040
176040
186139
196139
206139
216139
226238
236238
246238
256238
266238
276238
286238
296238
306139
316040

Chance of precipitation in August

Any precipitation

Guarulhos gets around 40 mm of rain over 5.2 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
217
317
417
517
616
716
816
916
1016
1116
1216
1316
1416
1516
1617
1717
1817
1917
2017
2117
2217
2318
2418
2518
2618
2719
2819
2920
3020
3121

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
160373
260373
359383
459383
558393
658393
757394
856404
956404
1055405
1155405
1255405
1354415
1453416
1553416
1653416
1753416
1852426
1952426
2051436
2150446
2249456
2348457
2447467
2546467
2646468
2745478
2845479
2944479
30434710
31434711

Wind in August

Winds average 10 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 54 min at the start of August to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over August. Sunrise moves from 7:45 AM to 7:21 AM, and sunset from 6:39 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.97:456:39
210.97:456:40
310.97:446:40
411.07:436:41
511.07:436:41
611.07:426:41
711.07:416:42
811.07:416:42
911.07:406:43
1011.17:396:43
1111.17:396:44
1211.17:386:44
1311.17:376:44
1411.17:366:45
1511.27:366:45
1611.27:356:46
1711.27:346:46
1811.27:336:46
1911.27:326:47
2011.37:316:47
2111.37:316:48
2211.37:306:48
2311.37:296:48
2411.37:286:49
2511.47:276:49
2611.47:266:49
2711.47:256:50
2811.47:246:50
2911.57:236:50
3011.57:226:51
3111.57:216:51

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.28 kWh/m².

For context, solar energy here swings from a low near 3.31 kWh/m² to a high of 5.64 kWh/m² in December across the year — August's 4.28 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.9Moderate
43.9Moderate
53.9Moderate
64.0Moderate
74.0Moderate
84.0Bright
94.0Bright
104.1Bright
114.1Bright
124.1Bright
134.2Bright
144.2Bright
154.2Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.7Bright
314.7Bright
Planning a trip in August

Hazard calendar for Guarulhos

In seasonPeak

None of Guarulhos's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Guarulhos's rainy season runs October–March, when most of the year's rain falls.

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

Is August a good time to visit Guarulhos?

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

7.8
Sightseeing
1st-best month of the year
6.2
Beach & pool
1st-best month of the year

August is one of the better times to visit Guarulhos for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Guarulhos in August

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

In August, Guarulhos sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes. About 5 days see rain.

light clothes

Sea temperature near Guarulhos in August

The nearest coast averages about 21°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 62 km away) is warmest in February at about 27°C and coldest in August near 21°C.

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

20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr26Warm
May24Refreshing
Jun22Refreshing
Jul21Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec25Warm

UV index in Guarulhos in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Guarulhos peaks around February 8 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 8UV 14Jul 14UV 5
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar10Extreme
Apr9Very high
May7High
Jun6High
Jul5Moderate
Aug7Very high
Sep8Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Guarulhos 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 Guarulhos is worst in June — around 22 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 10 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Guarulhos's WHO annual average of 15.2 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2322 µg/m³Dec 2010 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar13Moderate
Apr15Moderate
May20Moderate
Jun22Moderate
Jul22Moderate
Aug19Moderate
Sep17Moderate
Oct13Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Guarulhos?

Guarulhos sits at 23.5°S, 46.5°W, 774 m above sea level, in Brazil. The nearest listed city is Cangaiba, 4.0 km away.

Topography around Guarulhos

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

Within 3 km, the terrain around Guarulhos has only modest variations in elevation — a maximum elevation change of 92 m around an average of 757 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 493 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,031 m.

The land around Guarulhos is covered by artificial surfaces (81%) within 3 km, artificial surfaces (58%) and trees (35%) within 16 km, and trees (56%) within 80 km.

3 km
92 m
16 km
493 m
80 km
2,031 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Cangaiba 4.0 km · Jaçanã 4.0 km · Vila Galvão 5.0 km · Vila Medeiros 5.0 km · Ermelino Matarazzo 7.0 km · Ponte Rasa 7.0 km · Tucuruvi 8.0 km · Vila Maria 8.0 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 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 Guarulhos (-23.4628°, -46.5333°, elevation 774 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. 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).