São João da Boa Vista weather in August

In August, São João da Boa Vista sees average daytime highs of 26°C and overnight lows near 13°C, with 26 mm of rain across 3.7 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 25°C in the first days to 27°C by the end. The sky is clear or mostly clear about 65% of the time in August, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of August to 11 h 30 min by month's end. Set against the rest of the year, August is São João da Boa Vista's 1st-clearest and 2nd-windiest month. For the whole year in context, see São João da Boa Vista's year-round climate.

Daytime high
26°
9th warmest
Overnight low
13°
3rd coldest
Rainfall
26 mm
3.7 wet days
Daylight
11 h 12 min
7:34 AM – 6:48 PM
Cloud cover
32%
1st clearest
Wind
8 km/h
2nd windiest
Solar energy
4.96 kWh/m²
Travel score
8.2
out of 10

São João da Boa Vista 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 25°C in the first days to 27°C by the end.

A typical August day in São João da Boa Vista reaches about 26°C in the afternoon and slips back to 13°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°C. Set against its neighbours, August runs about 2°C warmer than July and about 2°C cooler than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12513
22513
32513
42513
52513
62513
72513
82513
92513
102513
112513
122513
132513
142513
152613
162613
172613
182614
192614
202614
212614
222614
232614
242614
252614
262714
272714
282714
292714
302714
312715

São João da Boa Vista 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
Jan28° / 19°2822413.24.2
Feb28° / 19°21120.112.84.4
Mar28° / 18°1832012.25.0
Apr27° / 17°8010.211.56.7
May24° / 14°576.4117.7
Jun24° / 13°324.210.78.3
Jul24° / 12°273.310.88.5
Aug26° / 13°263.711.28.2
Sep27° / 16°778.711.96.9
Oct28° / 18°12214.712.55.5
Nov27° / 18°19119.413.14.9
Dec28° / 19°24523.413.34.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% 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 23%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27525
37426
47426
57426
67426
77426
87525
97525
107525
117525
127723
137723
147723
157822
167921
177921
187921
197921
207921
217921
227921
237921
247921
257921
267921
277921
287921
297921
307921
317822

Chance of precipitation in August

Any precipitation

São João da Boa Vista gets around 26 mm of rain over 3.7 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 12% and peaks near 18% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
110
210
310
410
510
610
710
810
910
1011
1111
1211
1311
1411
1511
1611
1711
1812
1912
2012
2112
2213
2313
2414
2514
2615
2715
2816
2917
3017
3118

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
182162
282162
382162
482162
582162
681163
780173
880173
980173
1080173
1180173
1280173
1380173
1480173
1581163
1681163
1781163
1881163
1980173
2080173
2179183
2279183
2378193
2478193
2577203
2676204
2775214
2874215
2973225
3072226
3170237

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 8 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
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 hours 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 30 minutes over August. Sunrise moves from 7:44 AM to 7:21 AM, and sunset from 6:43 PM to 6:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:446:43
211.07:436:43
311.07:436:44
411.07:426:44
511.07:426:44
611.17:416:45
711.17:406:45
811.17:406:45
911.17:396:46
1011.17:386:46
1111.17:386:47
1211.27:376:47
1311.27:366:47
1411.27:366:48
1511.27:356:48
1611.27:346:48
1711.37:336:49
1811.37:336:49
1911.37:326:49
2011.37:316:50
2111.37:306:50
2211.47:296:50
2311.47:286:51
2411.47:286:51
2511.47:276:51
2611.47:266:52
2711.57:256:52
2811.57:246:52
2911.57:236:53
3011.57:226:53
3111.57:216:53

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.96 kWh/m².

For context, solar energy here swings from a low near 3.85 kWh/m² to a high of 5.91 kWh/m² in November across the year — August's 4.96 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.6Bright
54.6Bright
64.6Bright
74.7Bright
84.7Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
154.9Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.1Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.2Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.4Bright
315.4Bright
Planning a trip in August

Hazard calendar for São João da Boa Vista

In seasonPeak

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

São João da Boa Vista's monsoon runs November–March, when most of the year's rain falls.

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

Is August a good time to visit São João da Boa Vista?

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

8.2
Sightseeing
3rd-best month of the year
7.7
Beach & pool
1st-best month of the year

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

What to pack for São João da Boa Vista in August

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

In August, São João da Boa Vista sees daytime highs around 26°C and nights near 13°C. Worth packing: light clothes and sun protection. About 4 days see rain.

light clothessun protection

UV index in São João da Boa Vista 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 São João da Boa Vista peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (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 10UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep8Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in São João da Boa Vista 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 São João da Boa Vista is worst in September — around 24 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1522 µg/m³Nov 239 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar10Good
Apr11Good
May11Good
Jun11Good
Jul11Good
Aug15Moderate
Sep24Moderate
Oct13Moderate
Nov9Good
Dec9Good
Location & terrain

Where is São João da Boa Vista?

São João da Boa Vista sits at 22.0°S, 46.8°W, 774 m above sea level, in Brazil. The nearest listed city is Vargem Grande do Sul, 18 km away.

Topography around São João da Boa Vista

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São João da Boa Vista.

Within 3 km, the terrain around São João da Boa Vista has only modest variations in elevation — a maximum elevation change of 119 m around an average of 766 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,001 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,260 m.

The land around São João da Boa Vista is covered by artificial surfaces (40%), grassland (27%) and trees (24%) within 3 km, trees (37%), grassland (33%) and cropland (26%) within 16 km, and trees (36%), grassland (32%) and cropland (29%) within 80 km.

3 km
119 m
16 km
1,001 m
80 km
1,260 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Vargem Grande do Sul 18 km · Aguaí 21 km · Espírito Santo do Pinhal 26 km · Andradas 26 km · Poços de Caldas 32 km · Casa Branca 37 km · Jacutinga 40 km · São José do Rio Pardo 43 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 São João da Boa Vista (-21.9692°, -46.7981°, 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. 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).