Rio Pomba weather in September

In September, Rio Pomba sees average daytime highs of 26°C and overnight lows near 16°C, with 68 mm of rain across 10 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 33% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Rio Pomba's 5th-clearest and 1st-windiest month. For the whole year in context, see Rio Pomba's year-round climate.

Daytime high
26°
8th warmest
Overnight low
16°
5th coldest
Rainfall
68 mm
10 wet days
Daylight
11 h 54 min
6:51 AM – 6:43 PM
Cloud cover
59%
5th clearest
Wind
8 km/h
1st windiest
Solar energy
4.72 kWh/m²
Travel score
6.6
out of 10

Rio Pomba 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 26°C through the month.

A typical September day in Rio Pomba reaches about 26°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12615
22615
32615
42615
52615
62615
72615
82616
92616
102616
112616
122616
132616
142616
152616
162616
172616
182616
192616
202616
212616
222616
232616
242616
252617
262617
272617
282617
292617
302617

Rio Pomba weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°2681913.24.2
Feb30° / 20°16814.512.74.4
Mar29° / 20°20018.112.24.6
Apr27° / 18°8611.311.56.2
May25° / 16°457117.2
Jun24° / 14°194.610.77.9
Jul24° / 14°194.710.88.0
Aug25° / 14°255.111.37.7
Sep26° / 16°681011.96.6
Oct27° / 18°12413.912.55.7
Nov27° / 19°24819.4134.8
Dec28° / 20°27821.913.34.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26040
35941
45941
55743
65743
75545
85446
95248
105149
115050
124753
134654
144456
154357
164357
174159
184060
193961
203862
213763
223763
233664
243664
253466
263565
273466
283466
293466
303466

Chance of precipitation in September

Any precipitation

Rio Pomba gets around 68 mm of rain over 10 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 33% and peaks near 43% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
123
224
324
425
525
626
726
827
928
1029
1129
1230
1331
1432
1532
1633
1734
1835
1936
2037
2138
2238
2339
2440
2540
2641
2741
2842
2942
3043

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12647261
22647261
32548261
42448262
52448272
62348272
72247282
82147293
92047313
101946323
111746333
121646344
131545364
141445374
151344385
161243395
171142406
181141417
191140427
201039428
211038439
2210374310
2310364311
2410354312
2510334314
2610324315
2710314316
2810304318
299284319
309274420

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

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
118calm
128calm
138calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over September. Sunrise moves from 7:05 AM to 6:37 AM, and sunset from 6:40 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:056:40
211.67:046:40
311.67:036:40
411.67:026:40
511.77:016:41
611.77:016:41
711.77:006:41
811.76:596:41
911.76:586:42
1011.86:576:42
1111.86:566:42
1211.86:556:42
1311.86:546:43
1411.86:536:43
1511.96:526:43
1611.96:516:43
1711.96:506:44
1811.96:496:44
1911.96:486:44
2012.06:476:44
2112.06:466:45
2212.06:456:45
2312.06:446:45
2412.06:436:46
2512.16:426:46
2612.16:416:46
2712.16:406:46
2812.16:396:47
2912.26:386:47
3012.26:376:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.72 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 5.94 kWh/m² in February across the year — September's 4.72 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Rio Pomba

In seasonPeak

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

Rio Pomba's monsoon runs November–March, 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 Rio Pomba?

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

6.6
Sightseeing
5th-best month of the year
6.4
Beach & pool
5th-best month of the year

September is a reasonable time to visit Rio Pomba for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rio Pomba in September

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

In September, Rio Pomba sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Rio Pomba in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rio Pomba peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 10UV 15Jun 20UV 6
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul7High
Aug9Very high
Sep9Very high
Oct12Extreme
Nov14Extreme
Dec14Extreme

Air quality in Rio Pomba 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 Rio Pomba is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1716 µg/m³Jan 19 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr9Good
May10Good
Jun10Good
Jul9Good
Aug11Good
Sep17Moderate
Oct12Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Rio Pomba?

Rio Pomba sits at 21.3°S, 43.2°W, 448 m above sea level, in Brazil. The nearest listed city is Tocantins, 20 km away.

Topography around Rio Pomba

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

Within 3 km, the terrain around Rio Pomba has only modest variations in elevation — a maximum elevation change of 240 m around an average of 485 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 606 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,390 m.

The land around Rio Pomba is covered by grassland (65%) and trees (26%) within 3 km, grassland (66%) and trees (33%) within 16 km, and grassland (61%) and trees (37%) within 80 km.

3 km
240 m
16 km
606 m
80 km
1,390 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Tocantins 20 km · Ubá 30 km · São João Nepomuceno 34 km · Santos Dumont 44 km · Visconde do Rio Branco 46 km · Cataguases 52 km · Juiz de Fora 57 km · Barbacena 62 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 Rio Pomba (-21.2747°, -43.1792°, elevation 448 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).