Altamira weather in October

In October, Altamira sees average daytime highs of 33°C and overnight lows near 24°C, with 60 mm of rain across 11.2 wet days and about 12.1 hours of daylight. It is the 2nd-warmest and 9th-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 28% 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 h 06 min by month's end. Set against the rest of the year, October is Altamira's 4th-clearest and 3rd-windiest month. For the whole year in context, see Altamira's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
24°
12th coldest
Rainfall
60 mm
11.2 wet days
Daylight
12 h 06 min
6:12 AM – 6:16 PM
Cloud cover
58%
4th clearest
Wind
8 km/h
3rd windiest
Solar energy
6.18 kWh/m²
Travel score
3.4
out of 10

Altamira 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 Altamira 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 31°C and 34°C. Set against its neighbours, October runs on par with September and about 1°C warmer than November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
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 Altamira

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.

Altamira weather by month

How October compares with the rest of the year at a glance. October is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°24828.112.22.8
Feb29° / 23°27326.512.12.8
Mar30° / 23°32829.1122.8
Apr30° / 23°28128.211.92.7
May30° / 23°19026.211.93.0
Jun31° / 23°7116.611.83.9
Jul31° / 22°4610.211.84.4
Aug33° / 23°317.311.93.9
Sep33° / 24°347123.7
Oct33° / 24°6011.212.13.4
Nov32° / 24°1001512.13.3
Dec31° / 24°15221.912.23.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 27% of October, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36337
46238
56139
66139
76040
86040
95941
105941
115842
125842
135644
145644
155644
165545
175545
185545
195446
205347
215347
225248
235149
245149
255050
265050
274852
284753
294654
304555
314456

Chance of precipitation in October

Any precipitation

Altamira gets around 60 mm of rain over 11.2 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 36% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
128
229
330
431
532
632
733
834
934
1035
1135
1236
1337
1437
1538
1638
1738
1838
1938
2038
2138
2238
2339
2439
2539
2640
2740
2841
2941
3042
3142

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 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
19901
29901
39901
48911
58911
68911
78911
87912
97912
107912
117912
127903
136913
146913
156913
166913
176913
186913
196913
206913
216904
226904
236904
246904
257894
267894
277885
286895
296895
306886
316886

Wind in October

Winds average 8 km/h in October.

Across October, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in October

DaylightNight

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

Days grow by about 6 minutes over October. Sunrise moves from 6:17 AM to 6:09 AM, and sunset from 6:19 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:176:19
212.06:176:18
312.06:166:18
412.06:166:18
512.06:156:18
612.06:156:18
712.06:156:17
812.06:146:17
912.16:146:17
1012.16:146:17
1112.16:136:17
1212.16:136:17
1312.16:136:16
1412.16:126:16
1512.16:126:16
1612.16:126:16
1712.16:116:16
1812.16:116:16
1912.16:116:16
2012.16:116:16
2112.16:106:16
2212.16:106:16
2312.16:106:16
2412.16:106:16
2512.16:106:16
2612.16:106:16
2712.16:096:16
2812.16:096:16
2912.16:096:16
3012.16:096:16
3112.16:096:16

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 — the sunniest month for solar.

For context, solar energy here swings from a low near 3.84 kWh/m² to a high of 6.18 kWh/m² in October 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
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.0Intense
286.0Intense
296.0Intense
306.0Bright
316.0Bright
Planning a trip in October

Hazard calendar for Altamira

In seasonPeak

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

Altamira's monsoon runs December–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 Altamira?

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

3.4
Sightseeing
5th-best month of the year
6.0
Beach & pool
4th-best month of the year

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

What to pack for Altamira in October

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

In October, Altamira sees daytime highs around 33°C and nights near 24°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Altamira 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 Altamira peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 16UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec11Extreme

Air quality in Altamira 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 Altamira is worst in November — around 40 µg/m³ PM2.5 (poor), about 4.7× the cleanest month (June, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateNov 1238 µg/m³Jun 229 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar15Moderate
Apr13Moderate
May10Good
Jun9Good
Jul9Good
Aug12Good
Sep18Moderate
Oct34Moderate
Nov40Poor
Dec23Moderate
Location & terrain

Where is Altamira?

Altamira sits at 3.2°S, 52.2°W, 101 m above sea level, in Brazil. The nearest listed city is Brasil Novo, 39 km away.

Topography around Altamira

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

Within 3 km, the terrain around Altamira has only modest variations in elevation — a maximum elevation change of 105 m around an average of 116 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 210 m; within 80 km, significant variations in elevation — a maximum elevation change of 405 m.

The land around Altamira is covered by trees (31%), artificial surfaces (29%) and grassland (21%) within 3 km, grassland (44%) and trees (42%) within 16 km, and trees (65%) and grassland (29%) within 80 km.

3 km
105 m
16 km
210 m
80 km
405 m
treesgrasslandartificial surfacesbare terrainwater
October weather nearby: Brasil Novo 39 km · Vitória do Xingu 42 km · Senador José Porfírio 74 km · Medicilândia 80 km · Anapu 116 km · Porto de Moz 162 km · Uruará 179 km · Pacajá 188 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 Altamira (-3.2033°, -52.2064°, elevation 101 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).