Cachoeira do Piriá weather in October

In October, Cachoeira do Piriá sees average daytime highs of 33°C and overnight lows near 23°C, with 27 mm of rain across 5.9 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 30% 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 Cachoeira do Piriá's 4th-clearest and 1st-windiest month. For the whole year in context, see Cachoeira do Piriá's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
23°
10th coldest
Rainfall
27 mm
5.9 wet days
Daylight
12 hours
5:50 AM – 5:52 PM
Cloud cover
52%
4th clearest
Wind
11 km/h
1st windiest
Solar energy
5.95 kWh/m²
Travel score
3.9
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 Cachoeira do Piriá 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 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
53323
63323
73323
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 Cachoeira do Piriá

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.

Cachoeira do Piriá 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°22025.512.12.8
Feb30° / 23°29626.412.12.6
Mar30° / 23°38530.1122.6
Apr30° / 23°37629.1122.6
May31° / 23°22727.511.92.8
Jun31° / 23°11921.211.93.4
Jul31° / 22°8818.211.94.0
Aug31° / 22°4211.111.94.4
Sep32° / 23°277.7124.1
Oct33° / 23°275.9123.9
Nov33° / 24°36712.13.7
Dec33° / 24°8614.512.13.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 40% of October, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27723
37723
47723
57525
67525
77525
87426
97426
107327
117228
127228
137228
147129
157129
167129
177030
187030
196931
206931
216832
226832
236634
246634
256535
266535
276436
286436
296436
306337
316238

Chance of precipitation in October

Any precipitation

Cachoeira do Piriá gets around 27 mm of rain over 5.9 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 20% and peaks near 20% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
120
220
320
420
520
620
720
820
920
1020
1120
1220
1320
1420
1520
1620
1720
1820
1920
2020
2120
2220
2320
2419
2519
2619
2719
2819
2919
3019
3119

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 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1397
2397
3496
4496
5496
6496
7496
8496
9496
10595
11595
12595
13595
14595
15595
16595
17694
18694
19694
20694
21694
22694
23694
24694
25793
26793
27793
28793
29694
30694
31694

Wind in October

Winds average 11 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 5:55 AM to 5:48 AM, and sunset from 5:56 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:555:56
212.05:545:55
312.05:545:55
412.05:545:55
512.05:535:55
612.05:535:54
712.05:535:54
812.05:525:54
912.05:525:54
1012.05:525:53
1112.05:515:53
1212.05:515:53
1312.05:515:53
1412.05:515:53
1512.05:505:53
1612.05:505:52
1712.05:505:52
1812.05:505:52
1912.05:495:52
2012.05:495:52
2112.05:495:52
2212.05:495:52
2312.05:495:52
2412.15:495:52
2512.15:485:52
2612.15:485:52
2712.15:485:52
2812.15:485:52
2912.15:485:52
3012.15:485:52
3112.15:485:52

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.95 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.03 kWh/m² to a high of 5.95 kWh/m² in October across the year — October's 5.95 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Bright
76.0Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in October

Hazard calendar for Cachoeira do Piriá

In seasonPeak

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

Cachoeira do Piriá'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 Cachoeira do Piriá?

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

3.9
Sightseeing
4th-best month of the year
6.9
Beach & pool
1st-best month of the year

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

What to pack for Cachoeira do Piriá in October

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

In October, Cachoeira do Piriá sees daytime highs around 33°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Cachoeira do Piriá 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 Cachoeira do Piriá peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Cachoeira do Piriá 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 Cachoeira do Piriá is worst in February — around 19 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (July, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2019 µg/m³Jul 127 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar19Moderate
Apr14Moderate
May8Good
Jun7Good
Jul7Good
Aug8Good
Sep10Good
Oct12Good
Nov18Moderate
Dec18Moderate
Location & terrain

Where is Cachoeira do Piriá?

Cachoeira do Piriá sits at 1.8°S, 46.5°W, 77 m above sea level, in Brazil. The nearest listed city is Santa Luzia do Pará, 47 km away.

Topography around Cachoeira do Piriá

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

Within 3 km, the terrain around Cachoeira do Piriá has only modest variations in elevation — a maximum elevation change of 117 m around an average of 35 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 128 m; within 80 km, only modest variations in elevation — a maximum elevation change of 206 m.

The land around Cachoeira do Piriá is covered by grassland (52%) and trees (46%) within 3 km, trees (57%) and grassland (43%) within 16 km, and trees (56%) and grassland (42%) within 80 km.

3 km
117 m
16 km
128 m
80 km
206 m
treesgrasslandartificial surfacesbare terrainmangroves
October weather nearby: Santa Luzia do Pará 47 km · Capitão Poço 57 km · Garrafão do Norte 60 km · Centro Novo do Maranhão 63 km · Ourém 67 km · Maracaçumé 72 km · Nova Esperança do Piriá 73 km · Viseu 77 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 Cachoeira do Piriá (-1.7597°, -46.545°, elevation 77 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).