Oeiras do Pará weather in September

In September, Oeiras do Pará sees average daytime highs of 33°C and overnight lows near 25°C, with 29 mm of rain across 6.7 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 54% 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 Oeiras do Pará's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Oeiras do Pará's year-round climate.

Daytime high
33°
2nd warmest
Overnight low
25°
10th coldest
Rainfall
29 mm
6.7 wet days
Daylight
12 hours
6:14 AM – 6:13 PM
Cloud cover
42%
2nd clearest
Wind
9 km/h
2nd windiest
Solar energy
6.39 kWh/m²
Travel score
3.6
out of 10

Oeiras do Pará is settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

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 Oeiras do Pará reaches about 33°C in the afternoon and slips back to 25°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 35°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73325
83325
93325
103325
113325
123325
133325
143325
153325
163325
173425
183425
193425
203425
213425
223425
233425
243425
253425
263425
273425
283425
293425
303425

How September really feels in Oeiras do Pará

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
30 feel dangerously hot (≥ 39°C)
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.

Oeiras do Pará weather by month

How September compares with the rest of the year at a glance. September 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° / 24°27927.912.12.6
Feb30° / 24°35926.812.12.6
Mar30° / 24°46030.3122.5
Apr30° / 24°42529.2122.5
May31° / 24°2952811.92.6
Jun32° / 24°13421.111.93.1
Jul32° / 24°8316.911.93.5
Aug33° / 24°4511.211.93.6
Sep33° / 25°296.7123.6
Oct34° / 25°296.9123.5
Nov33° / 25°558.712.13.4
Dec32° / 25°13318.212.13.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 27% of September, with mostly cloudy or overcast conditions the remaining 19%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28416
38416
48416
58416
68317
78317
88317
98317
108317
118218
128119
138119
148218
158218
168218
178119
188119
198119
208020
218020
228020
238020
248020
258020
268020
277921
287921
297822
307822

Chance of precipitation in September

Any precipitation

Oeiras do Pará gets around 29 mm of rain over 6.7 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 23% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
131
230
329
429
528
627
726
825
925
1024
1124
1224
1323
1423
1523
1622
1722
1822
1921
2021
2121
2220
2320
2420
2520
2619
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 68% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
105842
205941
305941
406040
506139
606238
716237
816336
916336
1016435
1116435
1216534
1316534
1416633
1516732
1606832
1706931
1807030
1907129
2007129
2107228
2207327
2307426
2407426
2507525
2607624
2707624
2807723
2907723
3007822

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 6:20 AM to 6:08 AM, and sunset from 6:18 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:206:18
212.06:206:18
312.06:196:17
412.06:196:17
512.06:196:17
612.06:186:17
712.06:186:16
812.06:176:16
912.06:176:16
1012.06:176:15
1112.06:166:15
1212.06:166:15
1312.06:156:14
1412.06:156:14
1512.06:146:14
1612.06:146:13
1712.06:146:13
1812.06:136:13
1912.06:136:12
2012.06:126:12
2112.06:126:12
2212.06:126:12
2312.06:116:11
2412.06:116:11
2512.06:106:11
2612.06:106:10
2712.06:096:10
2812.06:096:10
2912.06:096:09
3012.06:086:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.39 kWh/m².

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 6.51 kWh/m² in October across the year — September's 6.39 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Oeiras do Pará

In seasonPeak

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

Oeiras do Pará'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 Oeiras do Pará?

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

3.6
Sightseeing
1st-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Oeiras do Pará in September

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

In September, Oeiras do Pará sees daytime highs around 33°C and nights near 25°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Oeiras do Pará 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 Oeiras do Pará peaks around March 15 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 15UV 15Jul 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov10Extreme
Dec10Extreme

Air quality in Oeiras do Pará 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 Oeiras do Pará is worst in November — around 34 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (June, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1433 µg/m³Jun 1110 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb18Moderate
Mar18Moderate
Apr15Moderate
May11Good
Jun10Good
Jul13Moderate
Aug14Moderate
Sep17Moderate
Oct26Moderate
Nov34Moderate
Dec19Moderate
Location & terrain

Where is Oeiras do Pará?

Oeiras do Pará sits at 2.0°S, 49.9°W, 6 m above sea level, in Brazil. The nearest listed city is Curralinho, 22 km away.

Topography around Oeiras do Pará

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

Within 3 km, the terrain around Oeiras do Pará has only modest variations in elevation — a maximum elevation change of 31 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 34 m; within 80 km, only modest variations in elevation — a maximum elevation change of 55 m.

The land around Oeiras do Pará is covered by trees (63%) and water (24%) within 3 km, trees (76%) within 16 km, and trees (79%) within 80 km.

3 km
31 m
16 km
34 m
80 km
55 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Curralinho 22 km · Bagre 41 km · Cametá 48 km · São Sebastião da Boa Vista 48 km · Limoeiro do Ajuru 54 km · Mocajuba 75 km · Breves 78 km · Muaná 88 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 Oeiras do Pará (-2.0031°, -49.8544°, elevation 6 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).