Santa Maria das Barreiras weather in August

In August, Santa Maria das Barreiras sees average daytime highs of 35°C and overnight lows near 23°C, with 4 mm of rain across 1 wet days and about 11.7 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 71% of the time in August, and the air most often feels humid.

Daylight stretches from about 11 h 36 min at the start of August to 11 h 48 min by month's end. Set against the rest of the year, August is Santa Maria das Barreiras's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Santa Maria das Barreiras's year-round climate.

Daytime high
35°
1st warmest
Overnight low
23°
3rd coldest
Rainfall
4 mm
1 wet days
Daylight
11 h 42 min
6:32 AM – 6:14 PM
Cloud cover
31%
2nd clearest
Wind
8 km/h
2nd windiest
Solar energy
5.78 kWh/m²
Travel score
3.2
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical August day in Santa Maria das Barreiras reaches about 35°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 37°C. Set against its neighbours, August runs about 1°C warmer than July and on par with September.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13522
23522
33522
43522
53522
63522
73522
83522
93522
103522
113522
123522
133522
143523
153523
163523
173523
183523
193523
203523
213523
223523
233523
243523
253523
263523
273523
283523
293523
303523
313523

How August really feels in Santa Maria das Barreiras

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.

Santa Maria das Barreiras weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°31128.412.52.7
Feb30° / 23°28425.812.32.7
Mar30° / 23°28528.312.12.7
Apr31° / 23°19421.911.83.1
May32° / 23°7411.411.63.9
Jun33° / 22°51.111.54.4
Jul34° / 22°10.411.54.0
Aug35° / 23°4111.73.2
Sep35° / 24°375.611.93.0
Oct33° / 24°12916.712.23.1
Nov31° / 23°21622.812.42.9
Dec31° / 23°25426.112.52.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28812
38812
48713
58713
68614
78614
88515
98515
108515
118515
128515
138515
148515
158515
168515
178515
188515
198515
208515
218515
228515
238515
248515
258515
268515
278317
288317
298317
308218
318218

Chance of precipitation in August

Any precipitation

Santa Maria das Barreiras gets around 4 mm of rain over 1 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 3% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
21
31
41
51
61
71
82
92
102
113
123
133
143
153
163
173
184
194
204
214
224
234
244
255
265
275
286
296
307
318

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
123945121
223946121
323846121
423846122
523746132
623646132
723646143
823545143
923544154
1033443164
1133442165
1233442175
1333441175
1433340185
1533340195
1633240196
1733239206
1833139206
1933139216
2033039226
2132939237
2232739247
2322639267
2422538278
2522438288
2622237309
27221373110
28220363211
29219353312
30118343313
31117333415

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
228calm
238calm
248calm
258calm
268calm
278calm
288calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 36 min at the start of August to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over August. Sunrise moves from 6:37 AM to 6:24 AM, and sunset from 6:13 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:376:13
211.66:366:13
311.66:366:13
411.66:366:13
511.66:366:14
611.66:356:14
711.66:356:14
811.76:356:14
911.76:346:14
1011.76:346:14
1111.76:346:14
1211.76:336:14
1311.76:336:14
1411.76:336:14
1511.76:326:14
1611.76:326:14
1711.76:316:14
1811.76:316:14
1911.76:306:14
2011.76:306:14
2111.76:306:14
2211.86:296:14
2311.86:296:14
2411.86:286:14
2511.86:286:14
2611.86:276:14
2711.86:266:14
2811.86:266:14
2911.86:256:14
3011.86:256:14
3111.86:246:13

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.78 kWh/m².

For context, solar energy here swings from a low near 4.68 kWh/m² to a high of 5.98 kWh/m² in September across the year — August's 5.78 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in August

Hazard calendar for Santa Maria das Barreiras

In seasonPeak

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

Santa Maria das Barreiras's monsoon runs November–April, 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 Santa Maria das Barreiras?

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

3.2
Sightseeing
4th-best month of the year
6.9
Beach & pool
3rd-best month of the year

August is a weaker month for outdoor sightseeing in Santa Maria das Barreiras. The water and warmth also suit a beach or pool day.

What to pack for Santa Maria das Barreiras in August

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

In August, Santa Maria das Barreiras sees daytime highs around 35°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Santa Maria das Barreiras in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Maria das Barreiras peaks around February 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 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 highExtremeExtremeFeb 21UV 15Jun 21UV 9
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug10Extreme
Sep12Extreme
Oct10Very high
Nov12Extreme
Dec11Extreme

Air quality in Santa Maria das Barreiras 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 Santa Maria das Barreiras is worst in September — around 81 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (February, 11 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateUnhealthyModerateSep 1675 µg/m³Feb 1411 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb11Good
Mar12Moderate
Apr12Good
May13Moderate
Jun14Moderate
Jul14Moderate
Aug34Moderate
Sep81Unhealthy
Oct32Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Santa Maria das Barreiras?

Santa Maria das Barreiras sits at 8.9°S, 49.7°W, 165 m above sea level, in Brazil. The nearest listed city is Conceição do Araguaia, 83 km away.

Topography around Santa Maria das Barreiras

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Maria das Barreiras.

Within 3 km, the terrain around Santa Maria das Barreiras has only modest variations in elevation — a maximum elevation change of 21 m around an average of 158 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 293 m; within 80 km, significant variations in elevation — a maximum elevation change of 368 m.

The land around Santa Maria das Barreiras is covered by trees (34%), water (31%) and grassland (24%) within 3 km, trees (53%) and grassland (33%) within 16 km, and grassland (52%) and trees (40%) within 80 km.

3 km
21 m
16 km
293 m
80 km
368 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Conceição do Araguaia 83 km · Santana do Araguaia 87 km · Redenção 100 km · Guaraí 132 km · Floresta do Araguaia 147 km · Colinas do Tocantins 163 km · Miracema do Tocantins 164 km · Paraíso do Tocantins 172 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 Santa Maria das Barreiras (-8.8717°, -49.7128°, elevation 165 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).