Arraial do Cabo weather in October

In October, Arraial do Cabo sees average daytime highs of 23°C and overnight lows near 21°C, with 54 mm of rain across 7.7 wet days and about 12.5 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 37% of the time in October, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of October to 12 h 48 min by month's end. Set against the rest of the year, October is Arraial do Cabo's 9th-clearest and 2nd-windiest month. For the whole year in context, see Arraial do Cabo's year-round climate.

Daytime high
23°
9th warmest
Overnight low
21°
5th coldest
Rainfall
54 mm
7.7 wet days
Daylight
12 h 30 min
6:17 AM – 6:49 PM
Cloud cover
55%
9th clearest
Wind
25 km/h
2nd windiest
Solar energy
5.98 kWh/m²
Travel score
7.2
out of 10

Arraial do Cabo is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical October day in Arraial do Cabo reaches about 23°C in the afternoon and slips back to 21°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 24°C. Set against its neighbours, October runs on par with September and about 1°C cooler than November.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12221
22221
32221
42221
52221
62221
72221
82221
92321
102321
112321
122321
132321
142321
152321
162321
172321
182321
192322
202322
212322
222322
232322
242322
252322
262322
272322
282322
292322
302322
312322

Arraial do Cabo weather by month

How October compares with the rest of the year at a glance. October is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 24°888.313.37.1
Feb26° / 24°52612.87.3
Mar26° / 24°1051112.26.7
Apr25° / 24°579.511.57.2
May24° / 22°5810.110.97.3
Jun23° / 21°346.410.67.8
Jul22° / 21°356.610.77.7
Aug22° / 21°286.111.27.7
Sep22° / 21°477.111.97.4
Oct23° / 21°547.712.57.2
Nov24° / 22°10110.613.16.7
Dec25° / 23°969.713.46.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25347
35347
45347
55347
65446
75446
85347
95446
105446
115446
125446
135248
145248
155248
165248
175149
185248
195248
205149
215248
225149
235149
245050
254951
265050
275050
284951
294753
304753
314753

Chance of precipitation in October

Any precipitation

Arraial do Cabo gets around 54 mm of rain over 7.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
225
325
425
524
624
723
823
923
1022
1122
1222
1323
1423
1523
1623
1724
1824
1925
2025
2126
2226
2327
2428
2528
2629
2729
2829
2930
3030
3130

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 71% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1411245110
2411245011
3411235111
4411235111
5311225212
6310225312
7310215313
8310205413
9310195513
10310195414
1129185714
1229185615
1329175715
1429175715
1529165716
1629165617
1729165617
1828155718
1928155619
2028155619
2117155720
2217155621
2317155621
2417165422
2517165323
2617165323
2717165224
2817165125
2916165126
3016165126
3116164927

Wind in October

Winds average 25 km/h in October.

Across October, daily wind ranges from about 24 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
125breezy
225breezy
325breezy
425breezy
525breezy
625breezy
725breezy
825breezy
925breezy
1025breezy
1125breezy
1225breezy
1325breezy
1425breezy
1525breezy
1625breezy
1725breezy
1825breezy
1925breezy
2025breezy
2125breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy
3124breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 12 min at the start of October to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over October. Sunrise moves from 6:31 AM to 6:06 AM, and sunset from 6:43 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:316:43
212.26:306:44
312.36:296:44
412.36:286:44
512.36:276:45
612.36:266:45
712.36:256:46
812.46:246:46
912.46:236:46
1012.46:226:47
1112.46:216:47
1212.56:206:48
1312.56:196:48
1412.56:196:49
1512.56:186:49
1612.56:176:49
1712.66:166:50
1812.66:156:50
1912.66:146:51
2012.66:146:51
2112.66:136:52
2212.76:126:52
2312.76:116:53
2412.76:116:53
2512.76:106:54
2612.86:096:54
2712.86:096:55
2812.86:086:55
2912.86:076:56
3012.86:076:57
3112.86:066:57

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.98 kWh/m².

For context, solar energy here swings from a low near 3.58 kWh/m² to a high of 6.65 kWh/m² in February across the year — October's 5.98 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Intense
156.0Intense
166.0Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in October

Is October a good time to visit Arraial do Cabo?

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

7.2
Sightseeing
7th-best month of the year
5.3
Beach & pool
10th-best month of the year

October is one of the better times to visit Arraial do Cabo for general sightseeing.

What to pack for Arraial do Cabo in October

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

In October, Arraial do Cabo sees daytime highs around 23°C and nights near 21°C. Worth packing: light clothes, sun protection and a windbreaker. About 8 days see rain.

light clothessun protectiona windbreaker

Sea temperature near Arraial do Cabo in October

The nearest coast averages about 22°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 km away) is warmest in March at about 25°C and coldest in September near 21°C.

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

20°22°24°26°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb24Warm
Mar25Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug22Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Refreshing

UV index in Arraial do Cabo in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Arraial do Cabo peaks around January 15 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 15UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct11Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Arraial do Cabo?

Arraial do Cabo sits at 23.0°S, 42.0°W, 11 m above sea level, in Brazil. The nearest listed city is Cabo Frio, 9.0 km away.

Topography around Arraial do Cabo

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

Within 3 km, the terrain around Arraial do Cabo has only modest variations in elevation — a maximum elevation change of 164 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 375 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,806 m.

The land around Arraial do Cabo is covered by water (59%) within 3 km, water (84%) within 16 km, and water (55%) and trees (23%) within 80 km.

3 km
164 m
16 km
375 m
80 km
1,806 m
treesgrasslandartificial surfacesbare terrainwaterwetland
October weather nearby: Cabo Frio 9.0 km · São Pedro da Aldeia 16 km · Iguaba Grande 25 km · Buzios 29 km · Araruama 34 km · Saquarema 46 km · Rio das Ostras 50 km · Silva Jardim 51 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 Arraial do Cabo (-22.9661°, -42.0278°, elevation 11 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).