Capitão Poço weather in September

In September, Capitão Poço sees average daytime highs of 33°C and overnight lows near 23°C, with 26 mm of rain across 7.1 wet days and about 12 hours of daylight. It is the 3rd-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 38% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Capitão Poço's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Capitão Poço's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
23°
6th coldest
Rainfall
26 mm
7.1 wet days
Daylight
12 hours
6:03 AM – 6:02 PM
Cloud cover
47%
2nd clearest
Wind
11 km/h
2nd windiest
Solar energy
5.94 kWh/m²
Travel score
3.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Capitão Poço 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, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
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

How September really feels in Capitão Poço

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Capitão Poço weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°20025.912.12.6
Feb31° / 23°27626.312.12.6
Mar30° / 23°37730.2122.5
Apr30° / 23°35129122.5
May31° / 23°20626.711.92.8
Jun31° / 22°10319.611.93.5
Jul31° / 22°7316.811.93.9
Aug32° / 22°3610.411.94.2
Sep33° / 23°267.1123.9
Oct33° / 23°265.9123.7
Nov33° / 24°377.312.13.5
Dec33° / 24°8414.912.13.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 42% of September, with mostly cloudy or overcast conditions the remaining 20%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18317
28317
38317
48218
58218
68218
78218
88218
98119
108119
118119
128119
138119
148119
158119
168020
178020
188020
198020
207921
217921
227921
237921
247921
257822
267822
277822
287822
297723
307624

Chance of precipitation in September

Any precipitation

Capitão Poço gets around 26 mm of rain over 7.1 wet days in September, the driest month. 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 29% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
129
229
328
428
527
627
726
826
926
1025
1125
1225
1325
1425
1524
1624
1723
1823
1923
2022
2122
2221
2321
2421
2520
2620
2719
2819
2919
3019

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1199
2199
3199
4298
5298
6298
7298
8298
9298
10397
11397
12397
13397
14397
15397
16397
17397
18397
19397
20397
21496
22496
23496
24496
25496
26496
27595
28595
29595
30595

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

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

Days grow by about 0 minutes over September. Sunrise moves from 6:09 AM to 5:57 AM, and sunset from 6:07 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:096:07
212.06:096:07
312.06:086:06
412.06:086:06
512.06:076:06
612.06:076:05
712.06:076:05
812.06:066:05
912.06:066:05
1012.06:056:04
1112.06:056:04
1212.06:056:04
1312.06:046:03
1412.06:046:03
1512.06:036:03
1612.06:036:02
1712.06:026:02
1812.06:026:02
1912.06:026:01
2012.06:016:01
2112.06:016:01
2212.06:006:00
2312.06:006:00
2412.06:006:00
2512.05:595:59
2612.05:595:59
2712.05:585:59
2812.05:585:59
2912.05:585:58
3012.05:575:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.94 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.03 kWh/m² in October across the year — September's 5.94 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Intense
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Capitão Poço

In seasonPeak

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

Capitão Poço'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 September a good time to visit Capitão Poço?

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

3.9
Sightseeing
2nd-best month of the year
6.8
Beach & pool
1st-best month of the year

September is a weaker month for outdoor sightseeing in Capitão Poço. The water and warmth also suit a beach or pool day.

What to pack for Capitão Poço in September

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

In September, Capitão Poço sees daytime highs around 33°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Capitão Poço in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Capitão Poço 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
Nov10Extreme
Dec11Extreme

Air quality in Capitão Poço in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Capitão Poço 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 Capitão Poço?

Capitão Poço sits at 1.7°S, 47.1°W, 69 m above sea level, in Brazil. The nearest listed city is Garrafão do Norte, 21 km away.

Topography around Capitão Poço

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

Within 3 km, the terrain around Capitão Poço has only modest variations in elevation — a maximum elevation change of 45 m around an average of 76 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, only modest variations in elevation — a maximum elevation change of 216 m.

The land around Capitão Poço is covered by grassland (55%) and trees (32%) within 3 km, grassland (54%) and trees (45%) within 16 km, and trees (57%) and grassland (43%) within 80 km.

3 km
45 m
16 km
125 m
80 km
216 m
treesgrasslandartificial surfaces
September weather nearby: Garrafão do Norte 21 km · Ourém 22 km · Santa Luzia do Pará 31 km · Irituia 42 km · São Miguel do Guamá 49 km · Cachoeira do Piriá 57 km · Nova Esperança do Piriá 59 km · Capanema 63 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 Capitão Poço (-1.7464°, -47.0594°, elevation 69 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).