Careiro weather in August

In August, Careiro sees average daytime highs of 32°C and overnight lows near 23°C, with 145 mm of rain across 19.2 wet days and about 11.9 hours of daylight. It is the 3rd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 30% of the time in August, and the air most often feels miserable.

Daylight stretches from about 11 h 48 min at the start of August to 11 h 54 min by month's end. Set against the rest of the year, August is Careiro's 1st-clearest and 3rd-windiest month. For the whole year in context, see Careiro's year-round climate.

Daytime high
32°
3rd warmest
Overnight low
23°
7th coldest
Rainfall
145 mm
19.2 wet days
Daylight
11 h 54 min
6:09 AM – 6:02 PM
Cloud cover
57%
1st clearest
Wind
5 km/h
3rd windiest
Solar energy
5.08 kWh/m²
Travel score
3.1
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical August day in Careiro reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, August runs about 1°C warmer than July and on par with September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224
313224

How August really feels in Careiro

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
15 feel dangerously hot (≥ 39°C)
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.

Careiro weather by month

How August compares with the rest of the year at a glance. August is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°35528.712.22.6
Feb30° / 23°35126.112.12.7
Mar30° / 24°43229.4122.6
Apr30° / 23°43728.811.92.6
May30° / 23°36329.311.82.6
Jun31° / 23°21323.611.83.1
Jul31° / 23°15221.511.83.4
Aug32° / 23°14519.211.93.1
Sep33° / 24°17521.1122.7
Oct32° / 24°18922.412.12.6
Nov32° / 24°22424.812.22.5
Dec31° / 24°32628.312.22.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 24% of August, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26238
36139
46238
56139
66040
75941
85842
95743
105644
115644
125545
135446
145347
155347
165347
175248
185248
195248
205248
215347
225248
235149
245149
255050
265050
274951
284951
294852
304852
314753

Chance of precipitation in August

Any precipitation

Careiro gets around 145 mm of rain over 19.2 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 63% and peaks near 70% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
157
257
357
458
558
658
759
859
960
1060
1161
1261
1362
1462
1562
1663
1763
1863
1964
2064
2164
2265
2365
2466
2566
2667
2768
2868
2969
3069
3170

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
124256
224256
324157
424157
524157
624157
724058
814059
914059
1013960
1113960
1213960
1313861
1413861
1513861
1613762
1713663
1813663
1913564
2013465
2113366
2213366
2313366
2413267
2513267
2613267
2713267
2813168
2913168
3013168
3113168

Wind in August

Winds average 5 km/h in August.

Across August, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 48 min at the start of August to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over August. Sunrise moves from 6:13 AM to 6:04 AM, and sunset from 6:03 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:136:03
211.86:126:03
311.86:126:03
411.86:126:03
511.86:126:03
611.86:126:03
711.86:126:03
811.96:116:02
911.96:116:02
1011.96:116:02
1111.96:116:02
1211.96:106:02
1311.96:106:02
1411.96:106:02
1511.96:106:02
1611.96:096:02
1711.96:096:02
1811.96:096:02
1911.96:086:01
2011.96:086:01
2111.96:086:01
2211.96:076:01
2311.96:076:01
2411.96:076:01
2511.96:066:00
2611.96:066:00
2711.96:056:00
2811.96:056:00
2911.96:056:00
3011.96:045:59
3111.96:045:59

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.08 kWh/m².

For context, solar energy here swings from a low near 3.81 kWh/m² to a high of 5.4 kWh/m² in October across the year — August's 5.08 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in August

Is August a good time to visit Careiro?

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

3.1
Sightseeing
2nd-best month of the year
5.1
Beach & pool
1st-best month of the year

August is a weaker month for outdoor sightseeing in Careiro.

What to pack for Careiro in August

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

In August, Careiro sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

UV index in Careiro in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Careiro peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 12 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 12UV 15Nov 12UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct10Extreme
Nov10Very high
Dec12Extreme

Air quality in Careiro 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 Careiro is worst in September — around 36 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (June, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateModerateSep 2035 µg/m³Jun 1111 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar15Moderate
Apr15Moderate
May12Good
Jun11Good
Jul14Moderate
Aug27Moderate
Sep36Poor
Oct33Moderate
Nov25Moderate
Dec18Moderate
Location & terrain

Where is Careiro?

Careiro sits at 3.8°S, 60.4°W, 25 m above sea level, in Brazil. The nearest listed city is Manaquiri, 39 km away.

Topography around Careiro

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

Within 3 km, the terrain around Careiro has only modest variations in elevation — a maximum elevation change of 35 m around an average of 37 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 115 m.

The land around Careiro is covered by trees (96%) within 3 km, trees (88%) within 16 km, and trees (85%) within 80 km.

3 km
35 m
16 km
43 m
80 km
115 m
treesgrasslandwaterwetland
August weather nearby: Manaquiri 39 km · Iranduba 57 km · Manacapuru 59 km · Manaus 83 km · Careiro da Várzea 88 km · Borba 111 km · Beruri 112 km · Autazes 139 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 Careiro (-3.7681°, -60.3692°, elevation 25 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).