Fonte Boa weather in August

In August, Fonte Boa sees average daytime highs of 31°C and overnight lows near 23°C, with 136 mm of rain across 23.3 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels miserable.

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

Daytime high
31°
4th warmest
Overnight low
23°
3rd coldest
Rainfall
136 mm
23.3 wet days
Daylight
11 h 54 min
6:31 AM – 6:26 PM
Cloud cover
64%
1st clearest
Wind
4 km/h
11th windiest
Solar energy
4.75 kWh/m²
Travel score
3.3
out of 10

Fonte Boa 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

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Fonte Boa reaches about 31°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263124
273124
283124
293124
303124
313124

How August really feels in Fonte Boa

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.

Fonte Boa weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°27326.812.12.8
Feb30° / 24°26923.812.12.8
Mar30° / 24°31628.4122.7
Apr30° / 24°34227.811.92.7
May30° / 24°35229.411.92.8
Jun29° / 23°23927.211.93.1
Jul30° / 23°16825.311.93.4
Aug31° / 23°13623.311.93.3
Sep31° / 24°15123.4123.0
Oct31° / 24°17524.712.12.8
Nov31° / 24°20525.512.12.7
Dec31° / 24°26428.512.12.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 25% of August, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24753
34753
44654
54654
64555
74456
84357
94258
104060
114060
123961
133961
143862
153862
163862
173763
183763
193664
203664
213664
223763
233763
243862
253763
263763
273763
283763
293664
303664
313466

Chance of precipitation in August

Any precipitation

Fonte Boa gets around 136 mm of rain over 23.3 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 76% and peaks near 78% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
173
273
372
472
572
673
773
874
974
1075
1175
1276
1376
1476
1577
1677
1777
1877
1977
2077
2177
2277
2377
2478
2578
2678
2778
2878
2978
3078
3178

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
123266
223266
313267
413267
513267
613267
713168
813168
913168
1013168
1113069
1213069
1312970
1412970
1512871
1612772
1712673
1812574
1912475
2012376
2112277
2212178
2312178
2412079
2511980
2601981
2701981
2801882
2901882
3001882
3101882

Wind in August

Winds average 4 km/h in August.

Across August, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 54 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 0 minutes over August. Sunrise moves from 6:34 AM to 6:26 AM, and sunset from 6:27 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:346:27
211.96:346:27
311.96:346:27
411.96:336:27
511.96:336:27
611.96:336:27
711.96:336:27
811.96:336:27
911.96:336:27
1011.96:326:27
1111.96:326:27
1211.96:326:26
1311.96:326:26
1411.96:316:26
1511.96:316:26
1611.96:316:26
1711.96:316:26
1811.96:306:26
1911.96:306:26
2011.96:306:25
2111.96:296:25
2211.96:296:25
2311.96:296:25
2411.96:286:25
2511.96:286:24
2611.96:286:24
2711.96:276:24
2811.96:276:24
2911.96:276:23
3011.96:266:23
3111.96:266:23

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.75 kWh/m².

For context, solar energy here swings from a low near 3.67 kWh/m² to a high of 5.23 kWh/m² in October across the year — August's 4.75 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
305.0Bright
315.0Bright
Planning a trip in August

Is August a good time to visit Fonte Boa?

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

3.3
Sightseeing
2nd-best month of the year
4.7
Beach & pool
1st-best month of the year

August is a weaker month for outdoor sightseeing in Fonte Boa.

What to pack for Fonte Boa in August

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

In August, Fonte Boa sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

UV index in Fonte Boa 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 Fonte Boa peaks around January 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeJan 21UV 14Jul 15UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme

Air quality in Fonte Boa 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 Fonte Boa is worst in March — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (June, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 1517 µg/m³Jun 1210 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb16Moderate
Mar17Moderate
Apr15Moderate
May10Good
Jun10Good
Jul11Good
Aug17Moderate
Sep16Moderate
Oct14Moderate
Nov14Moderate
Dec14Moderate
Location & terrain

Where is Fonte Boa?

Fonte Boa sits at 2.5°S, 66.1°W, 60 m above sea level, in Brazil. The nearest listed city is Maraã, 93 km away.

CarauariSão Gabriel da Cachoeira

Topography around Fonte Boa

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

Within 3 km, the terrain around Fonte Boa has only modest variations in elevation — a maximum elevation change of 46 m around an average of 52 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 53 m; within 80 km, only modest variations in elevation — a maximum elevation change of 60 m.

The land around Fonte Boa is covered by trees (51%), grassland (22%) and water (22%) within 3 km, trees (83%) within 16 km, and trees (94%) within 80 km.

3 km
46 m
16 km
53 m
80 km
60 m
treesgrasslandartificial surfaceswater
August weather nearby: Maraã 93 km · Uarini 121 km · Alvarães 163 km · Tefé 179 km · Tonantins 194 km · Santo Antônio do Içá 215 km · Carauari 278 km · São Gabriel da Cachoeira 288 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 Fonte Boa (-2.5139°, -66.0917°, elevation 60 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).