Cachoeiras de Macacu weather in October

In October, Cachoeiras de Macacu sees average daytime highs of 25°C and overnight lows near 18°C, with 159 mm of rain across 16.5 wet days and about 12.5 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 19% 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 Cachoeiras de Macacu's 9th-clearest and 2nd-windiest month. For the whole year in context, see Cachoeiras de Macacu's year-round climate.

Daytime high
25°
7th warmest
Overnight low
18°
6th coldest
Rainfall
159 mm
16.5 wet days
Daylight
12 h 30 min
6:20 AM – 6:52 PM
Cloud cover
70%
9th clearest
Wind
6 km/h
2nd windiest
Solar energy
5.15 kWh/m²
Travel score
5.6
out of 10

Cachoeiras de Macacu 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 25°C through the month.

A typical October day in Cachoeiras de Macacu reaches about 25°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, October runs about 1°C warmer than September and on par with November.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12517
22517
32517
42517
52517
62517
72517
82517
92517
102517
112517
122617
132618
142618
152618
162618
172618
182618
192618
202618
212618
222618
232618
242618
252618
262618
272618
282618
292618
302618
312618

Cachoeiras de Macacu weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 21°36224.113.23.9
Feb29° / 20°2772012.84.0
Mar28° / 20°2872412.24.3
Apr26° / 18°13416.411.55.6
May24° / 16°871210.96.7
Jun24° / 15°497.710.77.5
Jul23° / 14°487.110.87.6
Aug24° / 14°517.711.27.5
Sep25° / 16°10812.311.96.6
Oct25° / 18°15916.512.55.6
Nov26° / 19°29721.613.14.7
Dec27° / 20°36724.713.44.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53070
63169
73169
83169
93169
103268
113268
123268
133268
143169
153268
163169
173169
183070
193070
203070
213070
222971
232971
242872
252872
262872
272674
282674
292575
302575
312476

Chance of precipitation in October

Any precipitation

Cachoeiras de Macacu gets around 159 mm of rain over 16.5 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 53% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
150
250
350
449
549
648
747
847
947
1046
1147
1247
1347
1448
1549
1649
1750
1852
1953
2054
2156
2258
2359
2460
2561
2662
2763
2864
2964
3065
3166

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 41% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
162442280
262342290
362242290
452242300
552142310
652142320
742042330
842041341
941941351
1041940371
1141939381
1231938391
1331837401
1431837411
1531836431
1621735441
1721735451
1821634461
1921634472
2011534482
2111534482
2211533492
2311533492
2411533492
2511533492
2611533483
2711534483
2811434483
2911434483
3011334483
3111333494

Wind in October

Winds average 6 km/h in October.

Across October, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
285calm
295calm
305calm
315calm

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
312.26:316:46
412.36:316:47
512.36:306:47
612.36:296:48
712.36:286:48
812.46:276:48
912.46:266:49
1012.46:256:49
1112.46:246:49
1212.46:236:50
1312.56:226:50
1412.56:216:51
1512.56:216:51
1612.56:206:52
1712.66:196:52
1812.66:186:52
1912.66:176:53
2012.66:176:53
2112.66:166:54
2212.76:156:54
2312.76:146:55
2412.76:146:55
2512.76:136:56
2612.76:126:56
2712.86:126:57
2812.86:116:57
2912.86:106:58
3012.86:106:58
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 5.15 kWh/m².

For context, solar energy here swings from a low near 3.44 kWh/m² to a high of 5.99 kWh/m² in February across the year — October's 5.15 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.9Bright
64.9Bright
75.0Bright
85.0Bright
95.0Bright
105.1Bright
115.1Bright
125.1Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in October

Hazard calendar for Cachoeiras de Macacu

In seasonPeak

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

Cachoeiras de Macacu's rainy season runs November–March, 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 Cachoeiras de Macacu?

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

5.6
Sightseeing
6th-best month of the year
5.2
Beach & pool
7th-best month of the year

October is a reasonable time to visit Cachoeiras de Macacu for sightseeing.

What to pack for Cachoeiras de Macacu in October

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

In October, Cachoeiras de Macacu sees daytime highs around 25°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 17 days see rain.

rain gearlight clothessun protection

UV index in Cachoeiras de Macacu 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 Cachoeiras de Macacu peaks around January 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 21UV 14Jul 11UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr10Very high
May7High
Jun6High
Jul6High
Aug8Very high
Sep7Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Cachoeiras de Macacu 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 Cachoeiras de Macacu 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 Cachoeiras de Macacu?

Cachoeiras de Macacu sits at 22.5°S, 42.7°W, 63 m above sea level, in Brazil. The nearest listed city is Nova Friburgo, 24 km away.

Topography around Cachoeiras de Macacu

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

Within 3 km, the terrain around Cachoeiras de Macacu has large variations in elevation — a maximum elevation change of 710 m around an average of 239 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,264 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.

The land around Cachoeiras de Macacu is covered by trees (80%) within 3 km, trees (86%) within 16 km, and trees (46%) and grassland (33%) within 80 km.

3 km
710 m
16 km
2,264 m
80 km
2,252 m
treesgrasslandartificial surfaceswaterwetland
October weather nearby: Nova Friburgo 24 km · Rio Bonito 28 km · Tanguá 30 km · São Pedro 32 km · Teresópolis 34 km · Silva Jardim 34 km · Guapimirim 35 km · Itaboraí 38 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 Cachoeiras de Macacu (-22.4625°, -42.6531°, elevation 63 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).