Araruama weather in August

In August, Araruama sees average daytime highs of 24°C and overnight lows near 19°C, with 42 mm of rain across 7.2 wet days and about 11.2 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 54% of the time in August, and the air most often feels humid.

Daylight stretches from about 10 h 54 min at the start of August to 11 h 30 min by month's end. Set against the rest of the year, August is Araruama's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Araruama's year-round climate.

Daytime high
24°
11th warmest
Overnight low
19°
2nd coldest
Rainfall
42 mm
7.2 wet days
Daylight
11 h 12 min
7:17 AM – 6:30 PM
Cloud cover
41%
2nd clearest
Wind
14 km/h
3rd windiest
Solar energy
4.41 kWh/m²
Travel score
7.7
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical August day in Araruama reaches about 24°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, August runs on par with July and on par with September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32418
42418
52418
62418
72418
82418
92419
102419
112419
122419
132419
142419
152419
162419
172419
182419
192419
202419
212419
222519
232519
242519
252519
262519
272519
282519
292519
302519
312519

How August really feels in Araruama

Once humidity and wind are folded in, August averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Araruama weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°17815.413.25.0
Feb29° / 24°12211.712.85.2
Mar28° / 23°16316.112.25.2
Apr27° / 22°8511.511.56.4
May25° / 20°7410.910.96.9
Jun25° / 19°436.910.67.7
Jul24° / 18°457.810.77.7
Aug24° / 19°427.211.27.7
Sep25° / 20°741011.97.0
Oct26° / 21°9411.112.56.5
Nov26° / 22°17215.913.15.6
Dec28° / 23°18916.913.45.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 15% of August, with mostly cloudy or overcast conditions the remaining 32%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16931
26832
36832
46832
56832
66733
76733
86733
96733
106832
116832
126832
136832
146832
156931
166931
176931
186931
196931
206931
217030
227030
236931
246931
256931
266832
276832
286832
296832
306832
316832

Chance of precipitation in August

Any precipitation

Araruama gets around 42 mm of rain over 7.2 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 24% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
124
224
324
424
524
624
724
824
924
1024
1124
1224
1324
1423
1524
1624
1724
1824
1924
2023
2123
2223
2323
2423
2523
2623
2723
2824
2924
3024
3124

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
131746340
231746340
331746340
431746340
531746340
631746340
731746340
831745340
931745351
1031745351
1131744351
1231744351
1331744351
1431744361
1531744361
1631744361
1731744361
1831644371
1931643371
2031543381
2121543391
2221443401
2321443401
2421442411
2521342421
2621341431
2721340441
2821340441
2921339441
3021339451
3121339451

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 54 min 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 36 minutes over August. Sunrise moves from 7:27 AM to 7:04 AM, and sunset from 6:23 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.97:276:23
211.07:276:24
311.07:266:24
411.07:266:25
511.07:256:25
611.07:246:26
711.07:246:26
811.17:236:26
911.17:236:27
1011.17:226:27
1111.17:216:28
1211.17:206:28
1311.17:206:28
1411.27:196:29
1511.27:186:29
1611.27:176:30
1711.27:176:30
1811.27:166:30
1911.37:156:31
2011.37:146:31
2111.37:136:31
2211.37:126:32
2311.37:116:32
2411.47:116:32
2511.47:106:33
2611.47:096:33
2711.47:086:34
2811.47:076:34
2911.57:066:34
3011.57:056:34
3111.57:046:35

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.41 kWh/m².

For context, solar energy here swings from a low near 3.53 kWh/m² to a high of 6.32 kWh/m² in February across the year — August's 4.41 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.0Moderate
24.0Bright
34.0Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.4Bright
174.4Bright
184.4Bright
194.5Bright
204.5Bright
214.5Bright
224.6Bright
234.6Bright
244.6Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Araruama

In seasonPeak

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

Araruama's rainy season runs October–March, when most of the year's rain falls.

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

Is August a good time to visit Araruama?

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

7.7
Sightseeing
1st-best month of the year
6.7
Beach & pool
2nd-best month of the year

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

What to pack for Araruama in August

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

In August, Araruama sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Araruama in August

The nearest coast averages about 22°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 28 km away) is warmest in March at about 26°C and coldest in September near 22°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug22Refreshing
Sep22Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Araruama in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Araruama peaks around January 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 14UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5Moderate
Aug8Very high
Sep7High
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Araruama?

Araruama sits at 22.9°S, 42.3°W, 20 m above sea level, in Brazil. The nearest listed city is Iguaba Grande, 12 km away.

Topography around Araruama

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

Within 3 km, the terrain around Araruama has only modest variations in elevation — a maximum elevation change of 67 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 584 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Araruama is covered by artificial surfaces (50%) and water (22%) within 3 km, water (37%), grassland (32%) and trees (21%) within 16 km, and water (45%) and trees (31%) within 80 km.

3 km
67 m
16 km
584 m
80 km
2,252 m
treesgrasslandartificial surfaceswaterwetland
August weather nearby: Iguaba Grande 12 km · Saquarema 13 km · São Pedro da Aldeia 25 km · Silva Jardim 25 km · Cabo Frio 33 km · Rio Bonito 33 km · Arraial do Cabo 34 km · Tanguá 41 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 Araruama (-22.8728°, -42.3431°, elevation 20 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).