Ariquemes weather in October

In October, Ariquemes sees average daytime highs of 33°C and overnight lows near 23°C, with 142 mm of rain across 20.2 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 9% 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 18 min by month's end. Set against the rest of the year, October is Ariquemes's 6th-clearest and 6th-windiest month. For the whole year in context, see Ariquemes's year-round climate.

Daytime high
33°
4th warmest
Overnight low
23°
12th coldest
Rainfall
142 mm
20.2 wet days
Daylight
12 h 12 min
5:50 AM – 6:04 PM
Cloud cover
74%
6th clearest
Wind
5 km/h
6th windiest
Solar energy
5.6 kWh/m²
Travel score
2.7
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical October day in Ariquemes reaches about 33°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 30°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
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233323
243223
253223
263223
273223
283223
293223
303223
313223

How October really feels in Ariquemes

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.

Ariquemes weather by month

How October compares with the rest of the year at a glance. October is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°28227.612.52.8
Feb30° / 23°2792612.32.7
Mar30° / 23°27428.212.12.7
Apr30° / 23°18523.811.83.1
May30° / 22°9115.811.64.1
Jun32° / 21°204.411.44.9
Jul33° / 21°132.511.54.3
Aug34° / 21°325.411.73.3
Sep34° / 23°861411.92.8
Oct33° / 23°14220.212.22.7
Nov31° / 23°20823.212.52.8
Dec30° / 23°24626.812.62.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 19% of October, with mostly cloudy or overcast conditions the remaining 72%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33763
43763
53664
63565
73565
83466
93466
103367
113268
123169
133070
142971
152872
162872
172773
182674
192575
202575
212476
222377
232377
242278
252179
262080
271981
282080
292080
301981
311981

Chance of precipitation in October

Any precipitation

Ariquemes gets around 142 mm of rain over 20.2 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 65% and peaks near 73% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
158
259
359
460
560
661
761
861
961
1061
1161
1262
1362
1462
1563
1664
1764
1865
1966
2066
2167
2268
2369
2469
2570
2671
2771
2872
2972
3072
3173

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 89% 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 (%)
1128845
2118855
3118855
4017875
5016876
6016876
7015886
8015886
9014896
10014896
11013906
12013906
13003916
14002926
15002926
16002926
17001936
18001927
19001927
20001927
21001927
22001927
23001918
24001918
25001918
26001909
27001909
28002899
290028810
300028810
310028711

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 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
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 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over October. Sunrise moves from 5:59 AM to 5:45 AM, and sunset from 6:04 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:596:04
212.15:586:04
312.15:576:04
412.15:576:04
512.15:566:04
612.15:566:04
712.15:556:04
812.25:556:04
912.25:546:04
1012.25:536:04
1112.25:536:04
1212.25:526:04
1312.25:526:04
1412.25:516:04
1512.25:516:04
1612.25:506:04
1712.25:506:04
1812.25:506:04
1912.25:496:04
2012.35:496:04
2112.35:486:04
2212.35:486:05
2312.35:486:05
2412.35:476:05
2512.35:476:05
2612.35:476:05
2712.35:466:05
2812.35:466:06
2912.35:466:06
3012.35:456:06
3112.35:456:06

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.6 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.4 kWh/m² to a high of 5.6 kWh/m² in October across the year — October's 5.6 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in October

Hazard calendar for Ariquemes

In seasonPeak

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

Ariquemes's rainy season runs October–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 Ariquemes?

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

2.7
Sightseeing
10th-best month of the year
4.7
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Ariquemes.

What to pack for Ariquemes in October

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

In October, Ariquemes sees daytime highs around 33°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Ariquemes 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 Ariquemes peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 13 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeMar 10UV 15Sep 13UV 3
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug6High
Sep3Moderate
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Ariquemes 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 Ariquemes is worst in September — around 101 µg/m³ PM2.5 (unhealthy), about 10.3× the cleanest month (May, 10 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyModerateSep 1496 µg/m³May 1710 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb12Moderate
Mar14Moderate
Apr11Good
May10Good
Jun11Good
Jul15Moderate
Aug68Unhealthy
Sep101Unhealthy
Oct41Poor
Nov21Moderate
Dec15Moderate
Location & terrain

Where is Ariquemes?

Ariquemes sits at 9.9°S, 63.0°W, 139 m above sea level, in Brazil. The nearest listed city is Alto Paraíso, 36 km away.

Topography around Ariquemes

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

Within 3 km, the terrain around Ariquemes has only modest variations in elevation — a maximum elevation change of 148 m around an average of 132 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 197 m; within 80 km, significant variations in elevation — a maximum elevation change of 443 m.

The land around Ariquemes is covered by artificial surfaces (56%), grassland (21%) and trees (20%) within 3 km, grassland (52%) and trees (41%) within 16 km, and grassland (56%) and trees (42%) within 80 km.

3 km
148 m
16 km
197 m
80 km
443 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Alto Paraíso 36 km · Jaru 86 km · Buritis 92 km · Machadinho d'Oeste 127 km · Ouro Preto do Oeste 129 km · Candeias do Jamari 142 km · Porto Velho 159 km · Ji Paraná 161 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 Ariquemes (-9.9133°, -63.0408°, elevation 139 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).