Açailândia weather in October

In October, Açailândia sees average daytime highs of 33°C and overnight lows near 23°C, with 41 mm of rain across 7.2 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 8th-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 31% of the time in October, and the air most often feels muggy.

Daylight stretches from about 12 hours at the start of October to 12 h 12 min by month's end. Set against the rest of the year, October is Açailândia's 5th-clearest and 5th-windiest month. For the whole year in context, see Açailândia's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
23°
12th coldest
Rainfall
41 mm
7.2 wet days
Daylight
12 h 06 min
5:52 AM – 5:58 PM
Cloud cover
57%
5th clearest
Wind
8 km/h
5th windiest
Solar energy
6.18 kWh/m²
Travel score
3.6
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 Açailândia 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 31°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)
13423
23423
33423
43423
53423
63423
73423
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213323
223323
233323
243323
253323
263323
273323
283323
293323
303323
313323

How October really feels in Açailândia

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.

Açailândia weather by month

How October compares with the rest of the year at a glance. October is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°25527.412.32.9
Feb30° / 22°26025.212.22.9
Mar30° / 22°30028.8122.8
Apr30° / 22°21024.611.93.1
May31° / 22°1021511.84.0
Jun32° / 21°153.311.74.8
Jul33° / 21°91.711.74.5
Aug34° / 22°40.711.84.0
Sep34° / 23°142.9123.7
Oct33° / 23°417.212.13.6
Nov32° / 23°10114.512.23.5
Dec31° / 22°16621.512.33.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 26% of October, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37129
47129
57030
67030
76832
86733
96634
106535
116337
126139
136139
145941
155842
165644
175644
185446
195347
205248
215050
224951
234753
244654
254555
264456
274456
284357
294159
304159
314159

Chance of precipitation in October

Any precipitation

Açailândia gets around 41 mm of rain over 7.2 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 24% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
116
216
316
417
517
617
717
818
918
1019
1120
1220
1321
1422
1523
1623
1724
1825
1926
2026
2127
2228
2329
2429
2530
2631
2731
2832
2932
3033
3134

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 51% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
136334
236334
326335
426335
526236
626236
726137
826137
926038
1025939
1125840
1225741
1325642
1425543
1515445
1615346
1715247
1815049
1914851
2014752
2114554
2214455
2314257
2414158
2514059
2613960
2713861
2813861
2913762
3013663
3103565

Wind in October

Winds average 8 km/h in October.

Across October, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 hours at the start of October to 12 h 12 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 5:58 AM to 5:48 AM, and sunset from 6:00 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:586:00
212.05:576:00
312.15:576:00
412.15:566:00
512.15:566:00
612.15:555:59
712.15:555:59
812.15:555:59
912.15:545:59
1012.15:545:59
1112.15:535:59
1212.15:535:59
1312.15:535:59
1412.15:525:59
1512.15:525:58
1612.15:525:58
1712.15:515:58
1812.15:515:58
1912.15:515:58
2012.15:515:58
2112.15:505:58
2212.15:505:58
2312.15:505:58
2412.15:505:58
2512.15:495:58
2612.25:495:58
2712.25:495:58
2812.25:495:58
2912.25:495:59
3012.25:495:59
3112.25:485:59

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.18 kWh/m².

For context, solar energy here swings from a low near 4.47 kWh/m² to a high of 6.28 kWh/m² in September across the year — October's 6.18 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Bright
306.0Bright
315.9Bright
Planning a trip in October

Hazard calendar for Açailândia

In seasonPeak

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

Açailândia's monsoon runs December–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 Açailândia?

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

3.6
Sightseeing
6th-best month of the year
6.5
Beach & pool
5th-best month of the year

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

What to pack for Açailândia in October

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

In October, Açailândia sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Açailândia 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 Açailândia peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 11UV 15Jul 14UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Açailândia 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 Açailândia is worst in October — around 29 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (June, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 2329 µg/m³Jun 206 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb13Moderate
Mar13Moderate
Apr12Moderate
May9Good
Jun6Good
Jul7Good
Aug12Moderate
Sep23Moderate
Oct29Moderate
Nov29Moderate
Dec20Moderate
Location & terrain

Where is Açailândia?

Açailândia sits at 4.9°S, 47.5°W, 243 m above sea level, in Brazil. The nearest listed city is Itinga do Maranhão, 55 km away.

Topography around Açailândia

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

Within 3 km, the terrain around Açailândia has only modest variations in elevation — a maximum elevation change of 148 m around an average of 239 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 258 m; within 80 km, significant variations in elevation — a maximum elevation change of 354 m.

The land around Açailândia is covered by grassland (54%) and artificial surfaces (27%) within 3 km, grassland (51%) and trees (43%) within 16 km, and grassland (55%) and trees (41%) within 80 km.

3 km
148 m
16 km
258 m
80 km
354 m
treesgrasslandcroplandartificial surfaces
October weather nearby: Itinga do Maranhão 55 km · João Lisboa 57 km · Imperatriz 64 km · Rondon do Pará 65 km · Dom Eliseu 74 km · Bom Jesus das Selvas 89 km · Governador Edison Lobão 90 km · Araguatins 103 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 Açailândia (-4.9467°, -47.5047°, elevation 243 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).