Porto Acre weather in October

In October, Porto Acre sees average daytime highs of 32°C and overnight lows near 23°C, with 152 mm of rain across 20.7 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 7th-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 10% 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 Porto Acre's 6th-clearest and 6th-windiest month. For the whole year in context, see Porto Acre's year-round climate.

Daytime high
32°
3rd warmest
Overnight low
23°
8th coldest
Rainfall
152 mm
20.7 wet days
Daylight
12 h 12 min
5:09 AM – 5:22 PM
Cloud cover
75%
6th clearest
Wind
6 km/h
6th windiest
Solar energy
5.46 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 Porto Acre 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 on par with September and about 1°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
163223
173223
183223
193223
203223
213223
223223
233223
243223
253223
263223
273223
283223
293223
303223
313223

How October really feels in Porto Acre

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.

Porto Acre weather by month

How October compares with the rest of the year at a glance. October is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°26427.612.52.7
Feb30° / 23°26925.412.32.7
Mar30° / 23°2822812.12.7
Apr30° / 22°18924.811.83.0
May30° / 22°10217.511.64.1
Jun30° / 21°418.611.55.0
Jul31° / 20°26511.55.0
Aug33° / 21°477.511.73.9
Sep33° / 22°9013.411.93.1
Oct32° / 23°15220.712.22.8
Nov31° / 23°21323.812.42.7
Dec31° / 23°26627.312.52.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 76%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23763
33763
43664
53466
63367
73367
83268
93070
102971
112971
122773
132773
142575
152476
162377
172278
182278
192080
202080
211882
221882
231783
241684
251684
261684
271684
281585
291486
301486
311486

Chance of precipitation in October

Any precipitation

Porto Acre gets around 152 mm of rain over 20.7 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 66% and peaks near 76% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
156
256
357
457
558
658
759
860
960
1061
1162
1262
1363
1464
1565
1666
1767
1868
1969
2070
2171
2271
2372
2473
2574
2674
2775
2876
2976
3076
3176

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 76% 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 (%)
11178110
21178011
31168111
41168012
51168012
61167913
71157914
80058114
90058015
100048016
110047917
120047818
130037918
140037819
150037720
160027721
170027622
180027622
190017623
200017524
210017425
220017326
230017326
240017227
250017128
260017128
270017029
280017029
290026830
300026830
310026830

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
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
296calm
306calm
316calm

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 5:17 AM to 5:04 AM, and sunset from 5:22 PM to 5:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:175:22
212.15:165:22
312.15:155:22
412.15:155:21
512.15:145:21
612.15:145:21
712.15:135:21
812.15:135:21
912.25:125:21
1012.25:125:21
1112.25:115:21
1212.25:115:21
1312.25:105:21
1412.25:105:22
1512.25:095:22
1612.25:095:22
1712.25:085:22
1812.25:085:22
1912.25:075:22
2012.25:075:22
2112.35:075:22
2212.35:065:22
2312.35:065:22
2412.35:065:22
2512.35:055:23
2612.35:055:23
2712.35:055:23
2812.35:045:23
2912.35:045:23
3012.35:045:24
3112.35:045:24

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.46 kWh/m².

For context, solar energy here swings from a low near 4.21 kWh/m² to a high of 5.53 kWh/m² in September across the year — October's 5.46 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in October

Hazard calendar for Porto Acre

In seasonPeak

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

Porto Acre'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 Porto Acre?

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

2.8
Sightseeing
7th-best month of the year
4.7
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Porto Acre.

What to pack for Porto Acre in October

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

In October, Porto Acre sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Porto Acre 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 Porto Acre peaks around January 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 10 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeJan 20UV 15Sep 10UV 5
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul8Very high
Aug6High
Sep5Moderate
Oct12Extreme
Nov13Extreme
Dec13Extreme

Air quality in Porto Acre 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 Porto Acre is worst in September — around 100 µg/m³ PM2.5 (unhealthy), about 12.4× the cleanest month (June, 8 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyModerateGoodSep 1394 µg/m³Jun 98 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun8Good
Jul14Moderate
Aug65Unhealthy
Sep100Unhealthy
Oct27Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Porto Acre?

Porto Acre sits at 9.6°S, 67.5°W, 121 m above sea level, in Brazil. The nearest listed city is Rio Branco, 53 km away.

Topography around Porto Acre

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

Within 3 km, the terrain around Porto Acre has only modest variations in elevation — a maximum elevation change of 70 m around an average of 140 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 105 m; within 80 km, only modest variations in elevation — a maximum elevation change of 145 m.

The land around Porto Acre is covered by trees (74%) and grassland (23%) within 3 km, trees (68%) and grassland (31%) within 16 km, and trees (65%) and grassland (35%) within 80 km.

3 km
70 m
16 km
105 m
80 km
145 m
treesgrasslandartificial surfaceswater
October weather nearby: Rio Branco 53 km · Senador Guiomard 66 km · Plácido de Castro 91 km · Boca do Acre 94 km · Sena Madureira 138 km · Xapuri 159 km · Brasiléia 207 km · Epitaciolândia 208 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 Porto Acre (-9.5883°, -67.5325°, elevation 121 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).