Rio Bonito weather in October

In October, Rio Bonito sees average daytime highs of 26°C and overnight lows near 20°C, with 108 mm of rain across 12.5 wet days and about 12.5 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 24% 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 Rio Bonito's 9th-clearest and 1st-windiest month. For the whole year in context, see Rio Bonito's year-round climate.

Daytime high
26°
7th warmest
Overnight low
20°
6th coldest
Rainfall
108 mm
12.5 wet days
Daylight
12 h 30 min
6:19 AM – 6:52 PM
Cloud cover
65%
9th clearest
Wind
10 km/h
1st windiest
Solar energy
5.39 kWh/m²
Travel score
6.1
out of 10

Rio Bonito 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 26°C through the month.

A typical October day in Rio Bonito reaches about 26°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, October runs about 1°C warmer than September and on par with November.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12620
22620
32620
42620
52620
62620
72620
82620
92620
102620
112620
122620
132620
142620
152720
162720
172720
182720
192720
202721
212721
222721
232721
242721
252721
262721
272721
282721
292721
302721
312721

How October really feels in Rio Bonito

Once humidity and wind are folded in, October 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

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

Rio Bonito weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°23718.713.24.0
Feb30° / 23°17314.912.84.2
Mar29° / 23°21120.112.24.2
Apr28° / 21°11014.311.55.7
May26° / 19°8311.710.96.6
Jun25° / 18°467.210.67.5
Jul25° / 18°447.610.77.6
Aug25° / 18°447.911.27.5
Sep26° / 19°8110.711.96.7
Oct26° / 20°10812.512.56.1
Nov27° / 21°2051813.15.1
Dec29° / 23°24319.813.44.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33862
43862
53961
63961
73961
84060
94060
104060
114060
124060
134060
143961
153862
163862
173862
183763
193763
203664
213664
223565
233565
243466
253367
263367
273466
283268
293268
303268
313169

Chance of precipitation in October

Any precipitation

Rio Bonito gets around 108 mm of rain over 12.5 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 42% and peaks near 50% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
142
242
341
440
539
638
738
837
937
1037
1137
1238
1338
1438
1539
1639
1740
1841
1941
2042
2143
2244
2345
2445
2546
2647
2747
2848
2949
3049
3150

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1193144150
2193044160
3193044160
4192944170
5192944180
6192844180
7182745190
8182645200
9182545210
10182545220
11172446220
12072346230
13072247240
14062247240
15062147250
16062048260
17052048270
18051949270
19041849280
20041849290
21041848300
22031848310
23031848310
24031847320
25031847320
26031846320
27031746330
28031745331
29031745341
30031744341
31031744351

Wind in October

Winds average 10 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:33 AM to 6:09 AM, and sunset from 6:46 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:336:46
212.26:326:46
312.36:316:46
412.36:306:47
512.36:296:47
612.36:286:47
712.36:276:48
812.46:266:48
912.46:266:49
1012.46:256:49
1112.46:246:49
1212.46:236:50
1312.56:226:50
1412.56:216:51
1512.56:206:51
1612.56:196:52
1712.66:196:52
1812.66:186:52
1912.66:176:53
2012.66:166:53
2112.66:156:54
2212.76:156:54
2312.76:146:55
2412.76:136:55
2512.76:136:56
2612.76:126:56
2712.86:116:57
2812.86:116:57
2912.86:106:58
3012.86:096:59
3112.86:096:59

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.39 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 6.16 kWh/m² in February across the year — October's 5.39 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in October

Hazard calendar for Rio Bonito

In seasonPeak

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

Rio Bonito's rainy season runs November–April, when most of the year's rain falls.

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

Is October a good time to visit Rio Bonito?

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

6.1
Sightseeing
6th-best month of the year
5.9
Beach & pool
7th-best month of the year

October is a reasonable time to visit Rio Bonito for sightseeing.

What to pack for Rio Bonito in October

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

In October, Rio Bonito sees daytime highs around 26°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Rio Bonito 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 46 km away) is warmest in March at about 26°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
Jan25Warm
Feb25Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug22Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Rio Bonito in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rio Bonito peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighHighVery highExtremeJan 13UV 14Jul 13UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5Moderate
Aug8Very high
Sep7High
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Rio Bonito in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Rio Bonito is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1518 µg/m³Mar 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr12Good
May15Moderate
Jun16Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Rio Bonito?

Rio Bonito sits at 22.7°S, 42.6°W, 67 m above sea level, in Brazil. The nearest listed city is Tanguá, 11 km away.

Topography around Rio Bonito

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

Within 3 km, the terrain around Rio Bonito has large variations in elevation — a maximum elevation change of 765 m around an average of 161 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 932 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Rio Bonito is covered by trees (64%) and grassland (23%) within 3 km, trees (60%) and grassland (38%) within 16 km, and trees (41%), water (31%) and grassland (22%) within 80 km.

3 km
765 m
16 km
932 m
80 km
2,252 m
treesgrasslandartificial surfaceswaterwetland
October weather nearby: Tanguá 11 km · Silva Jardim 23 km · Saquarema 26 km · Itaboraí 26 km · Cachoeiras de Macacu 28 km · Maricá 32 km · Araruama 33 km · Iguaba Grande 42 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 Rio Bonito (-22.7086°, -42.6097°, elevation 67 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. 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).