Porto Belo weather in August

In August, Porto Belo sees average daytime highs of 21°C and overnight lows near 15°C, with 87 mm of rain across 9 wet days and about 11 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 32% of the time in August, and the air most often feels humid.

Daylight stretches from about 10 h 42 min at the start of August to 11 h 24 min by month's end. Set against the rest of the year, August is Porto Belo's 4th-clearest and 6th-windiest month. For the whole year in context, see Porto Belo's year-round climate.

Daytime high
21°
11th warmest
Overnight low
15°
2nd coldest
Rainfall
87 mm
9 wet days
Daylight
11 hours
7:47 AM – 6:49 PM
Cloud cover
58%
4th clearest
Wind
11 km/h
6th windiest
Solar energy
3.43 kWh/m²
Travel score
6.5
out of 10

Porto Belo is human settlement in Santa Catarina, 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 21°C through the month.

A typical August day in Porto Belo reaches about 21°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, August runs on par with July and about 1°C cooler than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12014
22014
32014
42014
52014
62014
72014
82014
92014
102014
112014
122014
132014
142014
152015
162115
172115
182115
192115
202115
212115
222115
232115
242115
252115
262115
272115
282115
292115
302115
312115

Porto Belo weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°18619.313.54.9
Feb28° / 23°16417.8134.8
Mar27° / 22°12717.612.25.4
Apr25° / 20°8710.911.46.6
May23° / 17°10710.510.76.7
Jun21° / 15°949.310.36.5
Jul20° / 14°869.110.56.4
Aug21° / 15°879116.5
Sep21° / 16°13112.311.86.0
Oct23° / 18°11913.312.76.0
Nov25° / 20°1131413.36.1
Dec27° / 21°12615.113.75.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55149
65050
75050
85050
95050
105050
114951
124951
135050
145050
154951
164951
174951
184951
195050
205050
215050
224951
235050
244951
254951
264852
274753
284654
294555
304555
314456

Chance of precipitation in August

Any precipitation

Porto Belo gets around 87 mm of rain over 9 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 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
328
428
528
628
728
828
928
1028
1129
1229
1329
1430
1530
1630
1730
1830
1930
2030
2130
2230
2330
2430
2530
2630
2730
2830
2930
3030
3130

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 37% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13829311
23830311
33830311
43830312
53830312
63730302
73730302
83731303
93631303
103531313
113531313
123431323
133331333
143330344
153230354
163129364
173129374
183028384
192928404
202927414
212827424
222726434
232726434
242626444
252625444
262625445
272625445
282625445
292525446
302525436
312525437

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 42 min at the start of August to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over August. Sunrise moves from 7:59 AM to 7:32 AM, and sunset from 6:41 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.77:596:41
210.77:596:42
310.77:586:42
410.87:576:43
510.87:566:43
610.87:566:44
710.87:556:45
810.87:546:45
910.97:536:46
1010.97:536:46
1110.97:526:47
1210.97:516:47
1311.07:506:48
1411.07:496:48
1511.07:486:49
1611.07:476:49
1711.17:466:50
1811.17:466:50
1911.17:456:51
2011.17:446:51
2111.27:436:52
2211.27:426:52
2311.27:416:53
2411.27:406:53
2511.37:386:54
2611.37:376:54
2711.37:366:55
2811.37:356:55
2911.47:346:56
3011.47:336:56
3111.47:326:57

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.43 kWh/m².

For context, solar energy here swings from a low near 2.62 kWh/m² to a high of 5.88 kWh/m² in December across the year — August's 3.43 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.2Moderate
83.2Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.3Moderate
133.3Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.7Moderate
273.7Moderate
283.7Moderate
293.7Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Is August a good time to visit Porto Belo?

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

6.5
Sightseeing
3rd-best month of the year
3.7
Beach & pool
11th-best month of the year

August is a reasonable time to visit Porto Belo for sightseeing.

What to pack for Porto Belo in August

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

In August, Porto Belo sees daytime highs around 21°C and nights near 15°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Porto Belo in August

The nearest coast averages about 18°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in February at about 26°C and coldest in August near 18°C.

It's comfortable for a long swim from Oct 4 to Jun 11 — about 8.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr24Warm
May22Refreshing
Jun20Cool
Jul18Cool
Aug18Cool
Sep19Cool
Oct21Refreshing
Nov23Refreshing
Dec25Warm

UV index in Porto Belo in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Porto Belo peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 19UV 14Jul 11UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May5High
Jun5Moderate
Jul5Moderate
Aug6High
Sep8Very high
Oct9Very high
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Porto Belo?

Porto Belo sits at 27.2°S, 48.6°W, 3 m above sea level, in Brazil. The nearest listed city is Bombinhas, 6.0 km away.

Topography around Porto Belo

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

Within 3 km, the terrain around Porto Belo has significant variations in elevation — a maximum elevation change of 330 m around an average of 56 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 665 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,273 m.

The land around Porto Belo is covered by trees (48%) and water (33%) within 3 km, water (60%) and trees (25%) within 16 km, and trees (48%) and water (39%) within 80 km.

3 km
330 m
16 km
665 m
80 km
1,273 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Bombinhas 6.0 km · Itapema 9.0 km · Tijucas 12 km · Governador Celso Ramos 17 km · Camboriú 18 km · Balneário Camboriú 20 km · Itajaí 30 km · Navegantes 30 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 Porto Belo (-27.1578°, -48.5531°, elevation 3 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).