Caieiras weather in August

In August, Caieiras sees average daytime highs of 24°C and overnight lows near 12°C, with 37 mm of rain across 4.8 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 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 54% 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 Caieiras's 1st-clearest and 5th-windiest month. For the whole year in context, see Caieiras's year-round climate.

Daytime high
24°
9th warmest
Overnight low
12°
3rd coldest
Rainfall
37 mm
4.8 wet days
Daylight
11 h 12 min
7:36 AM – 6:47 PM
Cloud cover
42%
1st clearest
Wind
10 km/h
5th windiest
Solar energy
4.53 kWh/m²
Travel score
8.0
out of 10

Caieiras is human settlement in Brazil.

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 23°C in the first days to 25°C by the end.

A typical August day in Caieiras reaches about 24°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°C. Set against its neighbours, August runs about 2°C warmer than July and about 1°C cooler than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12312
22312
32312
42312
52312
62312
72312
82312
92312
102312
112312
122412
132412
142412
152412
162412
172412
182412
192412
202413
212413
222413
232413
242513
252513
262513
272513
282513
292513
302513
312513

Caieiras 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°26723.213.34.4
Feb28° / 19°1952012.84.5
Mar27° / 18°16118.812.25.2
Apr26° / 16°739.711.56.8
May23° / 14°667.310.97.3
Jun22° / 12°495.310.67.7
Jul22° / 12°494.610.77.8
Aug24° / 12°374.811.28.0
Sep25° / 14°919.111.97.0
Oct26° / 16°13214.412.55.9
Nov26° / 17°16916.313.15.5
Dec27° / 18°21020.613.44.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36337
46238
56238
66337
76337
86337
96337
106436
116436
126535
136535
146634
156634
166733
176634
186733
196733
206733
216832
226832
236832
246832
256832
266832
276832
286832
296733
306733
316634

Chance of precipitation in August

Any precipitation

Caieiras gets around 37 mm of rain over 4.8 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 16% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
115
215
315
415
515
615
715
815
915
1015
1115
1215
1315
1415
1515
1615
1715
1816
1916
2016
2116
2217
2317
2417
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 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
167303
267303
366313
466313
566313
666313
766313
864324
964324
1064324
1164324
1264324
1363325
1463325
1564315
1664315
1764315
1863325
1963325
2062326
2161336
2261336
2360346
2459347
2559347
2657358
2757358
2856359
2955369
30533710
31533710

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 7:46 AM to 7:22 AM, and sunset from 6:40 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.97:466:40
210.97:456:41
310.97:456:41
411.07:446:42
511.07:436:42
611.07:436:42
711.07:426:43
811.07:416:43
911.07:416:44
1011.17:406:44
1111.17:396:45
1211.17:396:45
1311.17:386:45
1411.17:376:46
1511.27:366:46
1611.27:366:47
1711.27:356:47
1811.27:346:47
1911.27:336:48
2011.37:326:48
2111.37:316:49
2211.37:306:49
2311.37:306:49
2411.37:296:50
2511.47:286:50
2611.47:276:50
2711.47:266:51
2811.47:256:51
2911.57:246:51
3011.57:236:52
3111.57:226:52

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.53 kWh/m².

For context, solar energy here swings from a low near 3.48 kWh/m² to a high of 5.72 kWh/m² in December across the year — August's 4.53 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.1Bright
44.1Bright
54.2Bright
64.2Bright
74.2Bright
84.3Bright
94.3Bright
104.3Bright
114.4Bright
124.4Bright
134.4Bright
144.5Bright
154.5Bright
164.5Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in August

Hazard calendar for Caieiras

In seasonPeak

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

Caieiras'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 Caieiras?

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

8.0
Sightseeing
1st-best month of the year
6.7
Beach & pool
1st-best month of the year

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

What to pack for Caieiras in August

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

In August, Caieiras sees daytime highs around 24°C and nights near 12°C. Worth packing: light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Caieiras in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Caieiras peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 21UV 15Jul 12UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep8Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Caieiras 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 Caieiras is worst in June — around 71 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (December, 31 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJun 2370 µg/m³Dec 2031 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb34Moderate
Mar41Poor
Apr48Poor
May62Unhealthy
Jun71Unhealthy
Jul70Unhealthy
Aug60Unhealthy
Sep53Poor
Oct39Poor
Nov32Moderate
Dec31Moderate
Location & terrain

Where is Caieiras?

Caieiras sits at 23.4°S, 46.7°W, 793 m above sea level, in Brazil. The nearest listed city is Perus, 5.0 km away.

Topography around Caieiras

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

Within 3 km, the terrain around Caieiras has only modest variations in elevation — a maximum elevation change of 247 m around an average of 779 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 570 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,708 m.

The land around Caieiras is covered by trees (61%) and artificial surfaces (23%) within 3 km, trees (64%) and artificial surfaces (21%) within 16 km, and trees (56%) and grassland (22%) within 80 km.

3 km
247 m
16 km
570 m
80 km
1,708 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Perus 5.0 km · Franco da Rocha 5.0 km · Jaraguá 9.0 km · Anhanguera 9.0 km · Francisco Morato 9.0 km · Brasilandia 11 km · Cachoeirinha 13 km · Cajamar 14 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 Caieiras (-23.3642°, -46.7406°, elevation 793 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. 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).