Baião weather in September

In September, Baião sees average daytime highs of 34°C and overnight lows near 24°C, with 29 mm of rain across 6.2 wet days and about 12 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 50% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Baião's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Baião's year-round climate.

Daytime high
34°
1st warmest
Overnight low
24°
10th coldest
Rainfall
29 mm
6.2 wet days
Daylight
12 hours
6:13 AM – 6:13 PM
Cloud cover
45%
2nd clearest
Wind
9 km/h
2nd windiest
Solar energy
6.16 kWh/m²
Travel score
3.2
out of 10

Baião is human 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 34°C through the month.

A typical September day in Baião reaches about 34°C in the afternoon and slips back to 24°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 36°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13424
23424
33424
43424
53424
63424
73424
83424
93424
103424
113424
123424
133424
143424
153424
163424
173424
183424
193424
203424
213425
223525
233525
243525
253525
263525
273425
283425
293425
303425

How September really feels in Baião

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.

Baião weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°26827.412.12.6
Feb31° / 24°30926.412.12.5
Mar31° / 24°36129.8122.4
Apr31° / 24°31828.411.92.5
May31° / 24°19325.611.92.7
Jun32° / 24°7415.911.83.5
Jul33° / 23°5111.311.93.7
Aug34° / 24°337.211.93.4
Sep34° / 24°296.2123.2
Oct34° / 25°37812.13.0
Nov34° / 25°7511.112.13.0
Dec33° / 24°15119.112.22.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 28% of September, with mostly cloudy or overcast conditions the remaining 22%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28218
38119
48119
58119
68119
78119
88020
98020
108119
118119
128119
138119
148119
158020
167921
177921
187921
197822
207723
217624
227624
237624
247624
257525
267426
277426
287426
297327
307228

Chance of precipitation in September

Any precipitation

Baião gets around 29 mm of rain over 6.2 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 21% and peaks near 23% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
123
223
323
423
523
622
722
822
921
1021
1121
1221
1320
1420
1520
1619
1719
1819
1919
2019
2119
2220
2320
2420
2520
2620
2721
2821
2921
3022

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
138215
238215
338215
438215
538215
638215
738314
838314
938314
1038413
1138413
1238413
1338512
1428612
1528711
1628711
1728711
1828810
192899
202899
212899
222908
232908
242908
252908
262908
272908
282908
293898
303898

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min 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 6 minutes over September. Sunrise moves from 6:20 AM to 6:07 AM, and sunset from 6:17 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:206:17
211.96:206:17
312.06:196:16
412.06:196:16
512.06:186:16
612.06:186:15
712.06:176:15
812.06:176:15
912.06:176:15
1012.06:166:14
1112.06:166:14
1212.06:156:14
1312.06:156:13
1412.06:146:13
1512.06:146:13
1612.06:136:13
1712.06:136:12
1812.06:136:12
1912.06:126:12
2012.06:126:11
2112.06:116:11
2212.06:116:11
2312.06:106:11
2412.06:106:10
2512.06:096:10
2612.06:096:10
2712.06:096:09
2812.06:086:09
2912.06:086:09
3012.06:076:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.16 kWh/m².

For context, solar energy here swings from a low near 3.97 kWh/m² to a high of 6.3 kWh/m² in October across the year — September's 6.16 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Bright
46.0Bright
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Baião

In seasonPeak

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

Baião'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 Baião?

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

3.2
Sightseeing
4th-best month of the year
6.5
Beach & pool
2nd-best month of the year

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

What to pack for Baião in September

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

In September, Baião sees daytime highs around 34°C and nights near 24°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Baião 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 Baião peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 19 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highMar 16UV 15Nov 19UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec10Extreme

Air quality in Baião 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 Baião is worst in November — around 44 µg/m³ PM2.5 (poor), about 4.3× the cleanest month (June, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorModerateNov 1343 µg/m³Jun 1010 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar16Moderate
Apr14Moderate
May11Good
Jun10Good
Jul13Moderate
Aug16Moderate
Sep21Moderate
Oct35Moderate
Nov44Poor
Dec21Moderate
Location & terrain

Where is Baião?

Baião sits at 2.8°S, 49.7°W, 31 m above sea level, in Brazil. The nearest listed city is Mocajuba, 29 km away.

Topography around Baião

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

Within 3 km, the terrain around Baião has only modest variations in elevation — a maximum elevation change of 49 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 61 m; within 80 km, only modest variations in elevation — a maximum elevation change of 187 m.

The land around Baião is covered by trees (55%) and water (29%) within 3 km, trees (76%) within 16 km, and trees (81%) within 80 km.

3 km
49 m
16 km
61 m
80 km
187 m
treesgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: Mocajuba 29 km · Cametá 64 km · Tailândia 82 km · Oeiras do Pará 90 km · Limoeiro do Ajuru 105 km · Tucuruí 108 km · Curralinho 110 km · Bagre 116 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 Baião (-2.7906°, -49.6717°, elevation 31 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).