Igarapé-Açu weather in October

In October, Igarapé-Açu sees average daytime highs of 33°C and overnight lows near 24°C, with 22 mm of rain across 5.5 wet days and about 12 hours of daylight. It is the 2nd-warmest and 12th-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 32% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of October to 12 hours by month's end. Set against the rest of the year, October is Igarapé-Açu's 4th-clearest and 1st-windiest month. For the whole year in context, see Igarapé-Açu's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
24°
10th coldest
Rainfall
22 mm
5.5 wet days
Daylight
12 hours
5:55 AM – 5:56 PM
Cloud cover
52%
4th clearest
Wind
12 km/h
1st windiest
Solar energy
6 kWh/m²
Travel score
3.9
out of 10

Igarapé-Açu 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 33°C through the month.

A typical October day in Igarapé-Açu reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 34°C. Set against its neighbours, October runs on par with September and on par with November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313324

How October really feels in Igarapé-Açu

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.

Igarapé-Açu weather by month

How October compares with the rest of the year at a glance. October is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°21325.912.12.8
Feb30° / 23°28426.6122.7
Mar30° / 23°37330.2122.6
Apr30° / 23°34829.5122.6
May31° / 23°24527.211.92.8
Jun31° / 23°11421.111.93.3
Jul31° / 23°851811.93.7
Aug32° / 23°4312.4124.0
Sep33° / 23°277.7124.0
Oct33° / 24°225.5123.9
Nov33° / 24°336.612.13.7
Dec32° / 24°8014.512.13.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 36% of October, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27822
37624
47525
57525
67426
77327
87228
97228
107030
117030
126832
136832
146733
156733
166733
176733
186634
196634
206634
216535
226535
236535
246535
256436
266337
276238
286238
296238
306139
316040

Chance of precipitation in October

Any precipitation

Igarapé-Açu gets around 22 mm of rain over 5.5 wet days in October, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
218
318
418
518
618
717
818
918
1018
1118
1218
1318
1418
1518
1618
1718
1818
1918
2018
2118
2218
2318
2418
2518
2618
2718
2818
2918
3018
3118

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1298
2298
3298
4298
5298
6298
7397
8397
9397
10397
11397
12397
13397
14397
15496
16496
17496
18496
19496
20496
21496
22496
23496
24496
25496
26496
27496
28496
29496
30496
31496

Wind in October

Winds average 12 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in October

DaylightNight

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

Days grow by about 0 minutes over October. Sunrise moves from 5:59 AM to 5:53 AM, and sunset from 6:00 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:596:00
212.05:595:59
312.05:585:59
412.05:585:59
512.05:585:59
612.05:575:58
712.05:575:58
812.05:575:58
912.05:575:58
1012.05:565:57
1112.05:565:57
1212.05:565:57
1312.05:555:57
1412.05:555:57
1512.05:555:56
1612.05:555:56
1712.05:555:56
1812.05:545:56
1912.05:545:56
2012.05:545:56
2112.05:545:56
2212.05:545:56
2312.05:545:55
2412.05:535:55
2512.05:535:55
2612.05:535:55
2712.05:535:55
2812.05:535:55
2912.05:535:55
3012.05:535:55
3112.05:535:55

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.82 kWh/m² to a high of 6 kWh/m² in October across the year — October's 6 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.0Intense
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
226.0Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in October

Hazard calendar for Igarapé-Açu

In seasonPeak

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

Igarapé-Açu's monsoon runs January–May, 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 Igarapé-Açu?

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

3.9
Sightseeing
3rd-best month of the year
6.9
Beach & pool
1st-best month of the year

October is a weaker month for outdoor sightseeing in Igarapé-Açu. The water and warmth also suit a beach or pool day.

What to pack for Igarapé-Açu in October

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

In October, Igarapé-Açu sees daytime highs around 33°C and nights near 24°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Igarapé-Açu in October

The nearest coast averages about 28°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 62 km away) is warmest in June at about 29°C and coldest in February near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr28Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct28Tropical
Nov28Tropical
Dec28Tropical

UV index in Igarapé-Açu 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 Igarapé-Açu peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 15Jul 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec11Extreme

Air quality in Igarapé-Açu 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 Igarapé-Açu is worst in November — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (July, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 2020 µg/m³Jul 128 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar20Moderate
Apr15Moderate
May10Good
Jun8Good
Jul8Good
Aug9Good
Sep11Good
Oct13Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Igarapé-Açu?

Igarapé-Açu sits at 1.1°S, 47.6°W, 39 m above sea level, in Brazil. The nearest listed city is Santa Maria do Pará, 25 km away.

Topography around Igarapé-Açu

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

Within 3 km, the terrain around Igarapé-Açu has only modest variations in elevation — a maximum elevation change of 49 m around an average of 44 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, only modest variations in elevation — a maximum elevation change of 112 m.

The land around Igarapé-Açu is covered by trees (53%) and grassland (37%) within 3 km, trees (64%) and grassland (36%) within 16 km, and trees (58%) and grassland (21%) within 80 km.

3 km
49 m
16 km
70 m
80 km
112 m
treesgrasslandartificial surfaceswaterwetlandmangroves
October weather nearby: Santa Maria do Pará 25 km · Castanhal 39 km · Maracanã 44 km · Marapanim 47 km · Capanema 49 km · Curuçá 51 km · Santo Antônio do Tauá 57 km · São Miguel do Guamá 57 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 Igarapé-Açu (-1.1289°, -47.62°, elevation 39 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).