Cacoal weather in October

In October, Cacoal sees average daytime highs of 32°C and overnight lows near 23°C, with 157 mm of rain across 21.8 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 13% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of October to 12 h 24 min by month's end. Set against the rest of the year, October is Cacoal's 6th-clearest and 8th-windiest month. For the whole year in context, see Cacoal's year-round climate.

Daytime high
32°
3rd warmest
Overnight low
23°
12th coldest
Rainfall
157 mm
21.8 wet days
Daylight
12 h 18 min
5:43 AM – 5:59 PM
Cloud cover
70%
6th clearest
Wind
5 km/h
8th windiest
Solar energy
5.88 kWh/m²
Travel score
2.8
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical October day in Cacoal reaches about 32°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°C. Set against its neighbours, October runs about 1°C cooler than September and about 2°C warmer than November.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53323
63323
73323
83323
93223
103223
113223
123223
133223
143223
153223
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303123
313123

How October really feels in Cacoal

Once humidity and wind are folded in, October averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Cacoal weather by month

How October compares with the rest of the year at a glance. October is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°30829.312.62.8
Feb29° / 22°29726.412.42.8
Mar30° / 22°27028.212.12.9
Apr30° / 22°15122.311.83.4
May30° / 21°7713.411.54.7
Jun31° / 20°173.511.35.5
Jul32° / 20°112.111.45.1
Aug33° / 21°264.811.64.0
Sep33° / 22°9014.211.93.1
Oct32° / 23°15721.812.32.8
Nov31° / 23°2392512.52.8
Dec30° / 23°28427.912.72.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 20% of October, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34654
44456
54357
64258
74258
84159
94060
103961
113862
123862
133664
143664
153565
163466
173268
183268
193169
202971
212971
222773
232674
242575
252575
262377
272377
282278
292278
302179
312179

Chance of precipitation in October

Any precipitation

Cacoal gets around 157 mm of rain over 21.8 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 70% and peaks near 78% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
164
265
365
466
566
666
766
867
967
1067
1167
1267
1367
1468
1568
1669
1769
1870
1970
2071
2172
2273
2373
2474
2575
2676
2776
2877
2977
3078
3178

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11214812
21213822
31212832
41212832
51211842
60110872
70110872
8019882
9019882
10018892
11018892
12018892
13007912
14007912
15006922
16006922
17006922
18005932
19005932
20004942
21004942
22004942
23004942
24004942
25003952
26003952
27003952
28003943
29003943
30003943
31003943

Wind in October

Winds average 5 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
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 06 min at the start of October to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over October. Sunrise moves from 5:52 AM to 5:37 AM, and sunset from 5:58 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:525:58
212.15:515:58
312.15:505:58
412.15:505:58
512.15:495:58
612.25:495:58
712.25:485:58
812.25:475:58
912.25:475:58
1012.25:465:58
1112.25:465:58
1212.25:455:58
1312.25:455:58
1412.25:445:58
1512.25:445:58
1612.35:435:59
1712.35:435:59
1812.35:425:59
1912.35:425:59
2012.35:415:59
2112.35:415:59
2212.35:405:59
2312.35:406:00
2412.35:406:00
2512.35:396:00
2612.45:396:00
2712.45:386:00
2812.45:386:01
2912.45:386:01
3012.45:376:01
3112.45:376:01

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.88 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.58 kWh/m² to a high of 5.88 kWh/m² in October across the year — October's 5.88 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in October

Hazard calendar for Cacoal

In seasonPeak

In October, Cacoal sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Cacoal's monsoon runs October–April, when most of the year's rain falls.

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

Is October a good time to visit Cacoal?

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

2.8
Sightseeing
9th-best month of the year
4.6
Beach & pool
7th-best month of the year

October is a weaker month for outdoor sightseeing in Cacoal.

What to pack for Cacoal in October

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

In October, Cacoal sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Cacoal 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 Cacoal peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 22UV 15Sep 14UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep3Moderate
Oct11Extreme
Nov14Extreme
Dec14Extreme

Air quality in Cacoal 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 Cacoal is worst in September — around 53 µg/m³ PM2.5 (poor), about 6.8× the cleanest month (July, 8 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateSep 1550 µg/m³Jul 98 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar12Good
Apr10Good
May9Good
Jun8Good
Jul8Good
Aug31Moderate
Sep53Poor
Oct21Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Cacoal?

Cacoal sits at 11.4°S, 61.4°W, 197 m above sea level, in Brazil. The nearest listed city is Pimenta Bueno, 38 km away.

Topography around Cacoal

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

Within 3 km, the terrain around Cacoal has only modest variations in elevation — a maximum elevation change of 80 m around an average of 189 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 262 m; within 80 km, significant variations in elevation — a maximum elevation change of 434 m.

The land around Cacoal is covered by artificial surfaces (45%), trees (27%) and grassland (25%) within 3 km, grassland (68%) and trees (27%) within 16 km, and grassland (60%) and trees (39%) within 80 km.

3 km
80 m
16 km
262 m
80 km
434 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Pimenta Bueno 38 km · Espigão dOeste 48 km · Rolim de Moura 56 km · Presidente Médici 58 km · Alta Floresta d'Oeste 81 km · Ji Paraná 83 km · Ouro Preto do Oeste 114 km · São Miguel do Guaporé 141 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 Cacoal (-11.4386°, -61.4472°, elevation 197 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).