Rurópolis weather in September

In September, Rurópolis sees average daytime highs of 34°C and overnight lows near 23°C, with 70 mm of rain across 12.7 wet days and about 12 hours of daylight. It is the 1st-warmest and 10th-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 31% 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 Rurópolis's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Rurópolis's year-round climate.

Daytime high
34°
1st warmest
Overnight low
23°
12th coldest
Rainfall
70 mm
12.7 wet days
Daylight
12 hours
6:35 AM – 6:33 PM
Cloud cover
57%
3rd clearest
Wind
6 km/h
2nd windiest
Solar energy
5.86 kWh/m²
Travel score
2.9
out of 10

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 Rurópolis reaches about 34°C in the afternoon and slips back to 23°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 32°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)
13423
23423
33423
43423
53423
63423
73423
83423
93423
103423
113423
123423
133423
143423
153423
163423
173423
183423
193423
203423
213423
223423
233423
243423
253423
263423
273423
283423
293423
303423

How September really feels in Rurópolis

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.

Rurópolis weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°28828.312.22.8
Feb30° / 22°28826.112.12.8
Mar30° / 22°33629.4122.7
Apr30° / 22°29528.811.92.6
May30° / 22°20926.911.82.9
Jun31° / 22°8016.111.83.8
Jul32° / 22°5611.411.83.9
Aug34° / 22°429.811.93.3
Sep34° / 23°7012.7122.9
Oct33° / 23°1111712.12.8
Nov32° / 23°15820.512.22.8
Dec31° / 23°20424.312.22.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25941
35842
45842
55743
65743
75743
85743
95743
105743
115743
125743
135743
145743
155644
165644
175644
185644
195545
205545
215446
225446
235347
245248
255347
265248
275149
285050
295050
304951

Chance of precipitation in September

Any precipitation

Rurópolis gets around 70 mm of rain over 12.7 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 42% and peaks near 47% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
138
239
339
440
540
640
741
841
941
1041
1141
1242
1342
1442
1542
1642
1743
1843
1943
2043
2144
2244
2344
2445
2545
2645
2745
2846
2946
3047

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1119791
2120781
3120781
4020791
5020791
6021781
7021781
8021781
9021781
10021781
11020791
12020791
13019801
14019801
15018811
16017821
17017821
18016831
19015841
20014851
21014851
22013861
23013852
24013852
25012862
26012862
27012853
28011863
29011863
30010864

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:42 AM to 6:28 AM, and sunset from 6:37 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:426:37
211.96:416:37
311.96:416:37
411.96:406:36
511.96:406:36
611.96:396:36
711.96:396:36
811.96:386:35
912.06:386:35
1012.06:386:35
1112.06:376:35
1212.06:376:34
1312.06:366:34
1412.06:366:34
1512.06:356:34
1612.06:356:33
1712.06:346:33
1812.06:346:33
1912.06:336:33
2012.06:336:32
2112.06:326:32
2212.06:326:32
2312.06:316:32
2412.06:316:31
2512.06:306:31
2612.06:306:31
2712.06:296:31
2812.06:296:30
2912.06:286:30
3012.06:286:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.86 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.1 kWh/m² to a high of 5.86 kWh/m² in September across the year — September's 5.86 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.9Bright
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
Planning a trip in September

Hazard calendar for Rurópolis

In seasonPeak

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

Rurópolis's rainy season runs November–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 Rurópolis?

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

2.9
Sightseeing
4th-best month of the year
5.7
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Rurópolis.

What to pack for Rurópolis in September

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

In September, Rurópolis sees daytime highs around 34°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Rurópolis 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 Rurópolis peaks around February 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 17 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highExtremeFeb 21UV 15Nov 17UV 10
UV index (midday)Level
Jan13Extreme
Feb16Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec11Extreme

Air quality in Rurópolis 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 Rurópolis is worst in November — around 62 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (June, 9 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModeratePoorUnhealthyNov 962 µg/m³Jun 179 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar13Moderate
Apr12Moderate
May10Good
Jun9Good
Jul10Good
Aug19Moderate
Sep38Poor
Oct62Unhealthy
Nov62Unhealthy
Dec27Moderate
Location & terrain

Where is Rurópolis?

Rurópolis sits at 4.1°S, 54.9°W, 142 m above sea level, in Brazil. The nearest listed city is Aveiro, 72 km away.

Topography around Rurópolis

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

Within 3 km, the terrain around Rurópolis has only modest variations in elevation — a maximum elevation change of 136 m around an average of 133 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 319 m; within 80 km, significant variations in elevation — a maximum elevation change of 471 m.

The land around Rurópolis is covered by trees (46%) and grassland (46%) within 3 km, trees (71%) and grassland (29%) within 16 km, and trees (89%) within 80 km.

3 km
136 m
16 km
319 m
80 km
471 m
treesgrasslandartificial surfacesbare terrainwater
September weather nearby: Aveiro 72 km · Placas 81 km · Itaituba 121 km · Trairão 126 km · Uruará 137 km · Mojuí dos Campos 160 km · Belterra 162 km · Santarém 185 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 Rurópolis (-4.0956°, -54.9103°, elevation 142 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).