Oriximiná weather in September

In September, Oriximiná sees average daytime highs of 33°C and overnight lows near 25°C, with 71 mm of rain across 10.7 wet days and about 12 hours of daylight. It is the 1st-warmest and 11th-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 45% 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 Oriximiná's 2nd-clearest and 1st-windiest month. For the whole year in context, see Oriximiná's year-round climate.

Daytime high
33°
1st warmest
Overnight low
25°
11th coldest
Rainfall
71 mm
10.7 wet days
Daylight
12 hours
6:38 AM – 6:38 PM
Cloud cover
49%
2nd clearest
Wind
7 km/h
1st windiest
Solar energy
6.14 kWh/m²
Travel score
3.6
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 Oriximiná reaches about 33°C in the afternoon and slips back to 25°C overnight — a 7°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, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53325
63325
73325
83325
93325
103325
113325
123325
133325
143325
153325
163325
173325
183325
193325
203325
213326
223326
233326
243326
253326
263326
273326
283326
293326
303326

How September really feels in Oriximiná

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.

Oriximiná weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°32926.912.12.9
Feb30° / 24°30724.612.12.9
Mar30° / 24°37828.4122.8
Apr30° / 24°36828.5122.7
May30° / 24°27228.111.92.9
Jun30° / 24°14021.411.93.5
Jul31° / 24°9116.711.94.0
Aug32° / 25°7011.411.94.1
Sep33° / 25°7110.7123.6
Oct33° / 26°10012.8123.4
Nov32° / 25°14916.812.13.2
Dec31° / 25°21121.512.13.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
26931
36832
46832
56733
66634
76634
86535
96535
106535
116535
126436
136436
146535
156436
166436
176436
186436
196337
206436
216337
226436
236337
246238
256238
266238
276238
286040
295941
305842

Chance of precipitation in September

Any precipitation

Oriximiná gets around 71 mm of rain over 10.7 wet days in September. 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 37% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
134
234
334
435
535
636
736
836
937
1037
1137
1237
1337
1437
1537
1636
1736
1836
1935
2035
2135
2235
2335
2435
2535
2635
2735
2836
2936
3037

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
107426
217326
317326
417326
517425
627325
727325
827325
927226
1027226
1137126
1237126
1337027
1437027
1537027
1636928
1736928
1836928
1936829
2036829
2136829
2236730
2336730
2436730
2536829
2636829
2736829
2836829
2936829
3036829

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:44 AM to 6:32 AM, and sunset from 6:42 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:446:42
212.06:446:42
312.06:436:42
412.06:436:41
512.06:436:41
612.06:426:41
712.06:426:40
812.06:416:40
912.06:416:40
1012.06:416:39
1112.06:406:39
1212.06:406:39
1312.06:396:38
1412.06:396:38
1512.06:386:38
1612.06:386:38
1712.06:386:37
1812.06:376:37
1912.06:376:37
2012.06:366:36
2112.06:366:36
2212.06:366:36
2312.06:356:35
2412.06:356:35
2512.06:346:35
2612.06:346:34
2712.06:346:34
2812.06:336:34
2912.06:336:33
3012.06:326:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.14 kWh/m².

For context, solar energy here swings from a low near 4.02 kWh/m² to a high of 6.15 kWh/m² in October across the year — September's 6.14 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
26.0Bright
36.0Bright
46.0Bright
56.0Bright
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Oriximiná

In seasonPeak

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

Oriximiná's rainy season runs December–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Oriximiná?

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

3.6
Sightseeing
3rd-best month of the year
6.3
Beach & pool
2nd-best month of the year

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

What to pack for Oriximiná in September

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

In September, Oriximiná sees daytime highs around 33°C and nights near 25°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Oriximiná in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oriximiná peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 10UV 15Nov 16UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep11Extreme
Oct12Extreme
Nov9Very high
Dec11Extreme

Air quality in Oriximiná 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 Oriximiná is worst in November — around 34 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (June, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateNov 1533 µg/m³Jun 129 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar15Moderate
Apr14Moderate
May10Good
Jun9Good
Jul11Good
Aug14Moderate
Sep17Moderate
Oct26Moderate
Nov34Moderate
Dec23Moderate
Location & terrain

Where is Oriximiná?

Oriximiná sits at 1.8°S, 55.9°W, 34 m above sea level, in Brazil. The nearest listed city is Óbidos, 42 km away.

Topography around Oriximiná

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

Within 3 km, the terrain around Oriximiná has only modest variations in elevation — a maximum elevation change of 73 m around an average of 26 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 116 m; within 80 km, significant variations in elevation — a maximum elevation change of 375 m.

The land around Oriximiná is covered by water (37%) and grassland (21%) within 3 km, trees (49%) and water (26%) within 16 km, and trees (67%) within 80 km.

3 km
73 m
16 km
116 m
80 km
375 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Óbidos 42 km · Juruti 50 km · Terra Santa 79 km · Nhamundá 105 km · Alenquer 127 km · Parintins 136 km · Belterra 142 km · Santarém 149 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 Oriximiná (-1.7656°, -55.8661°, elevation 34 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).