Ribeirópolis weather in September

In September, Ribeirópolis sees average daytime highs of 28°C and overnight lows near 20°C, with 31 mm of rain across 11.4 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 29°C by the end. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Ribeirópolis's 1st-clearest and 3rd-windiest month. For the whole year in context, see Ribeirópolis's year-round climate.

Daytime high
28°
9th warmest
Overnight low
20°
3rd coldest
Rainfall
31 mm
11.4 wet days
Daylight
11 h 54 min
5:26 AM – 5:22 PM
Cloud cover
50%
1st clearest
Wind
12 km/h
3rd windiest
Solar energy
5.2 kWh/m²
Travel score
5.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 29°C by the end.

A typical September day in Ribeirópolis reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182820
192920
202920
212920
222921
232921
242921
252921
262921
272921
282921
292921
302921

How September really feels in Ribeirópolis

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ribeirópolis weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°441012.53.9
Feb32° / 23°4510.612.33.9
Mar32° / 23°5212.412.13.9
Apr31° / 23°5513.911.84.2
May29° / 22°621711.54.8
Jun27° / 21°6318.511.45.3
Jul26° / 20°531911.45.4
Aug27° / 20°4316.211.75.7
Sep28° / 20°3111.411.95.8
Oct30° / 21°257.712.25.2
Nov32° / 22°256.812.54.5
Dec32° / 23°266.812.64.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 47% of September, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26832
36931
46832
56832
66832
76832
86832
96832
107030
117030
127030
137228
147228
157327
167426
177525
187525
197624
207723
217822
227822
237921
247822
257822
267822
277822
287723
297723
307624

Chance of precipitation in September

Any precipitation

Ribeirópolis gets around 31 mm of rain over 11.4 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 38% and peaks near 44% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
241
341
442
542
643
743
844
944
1044
1144
1244
1343
1443
1542
1641
1740
1838
1937
2036
2134
2233
2332
2431
2530
2629
2728
2827
2927
3026

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 89% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
110873
210873
310873
410873
510873
610873
710873
810873
99883
109883
119883
128893
138893
148893
157903
167903
177903
187894
196904
206904
215914
225914
235914
245905
254915
264915
274906
283916
293907
303907

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 5:36 AM to 5:17 AM, and sunset from 5:23 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:365:23
211.85:355:23
311.85:345:23
411.85:345:23
511.85:335:23
611.85:325:23
711.95:325:23
811.95:315:23
911.95:305:23
1011.95:305:23
1111.95:295:23
1211.95:285:23
1311.95:285:22
1411.95:275:22
1511.95:265:22
1611.95:265:22
1712.05:255:22
1812.05:245:22
1912.05:245:22
2012.05:235:22
2112.05:225:22
2212.05:225:22
2312.05:215:22
2412.05:205:22
2512.05:205:22
2612.05:195:22
2712.15:185:22
2812.15:185:22
2912.15:175:21
3012.15:175:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.2 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 6.26 kWh/m² in December across the year — September's 5.2 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.1Bright
135.1Bright
145.1Bright
155.2Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.6Bright
295.6Bright
305.6Bright
Planning a trip in September

Is September a good time to visit Ribeirópolis?

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

5.8
Sightseeing
1st-best month of the year
6.8
Beach & pool
4th-best month of the year

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

What to pack for Ribeirópolis in September

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

In September, Ribeirópolis sees daytime highs around 28°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Ribeirópolis in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 70 km away) is warmest in April at about 28°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Tropical
Apr28Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct26Warm
Nov26Warm
Dec27Warm

UV index in Ribeirópolis 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 Ribeirópolis peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 17UV 15Jul 12UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Ribeirópolis?

Ribeirópolis sits at 10.5°S, 37.4°W, 239 m above sea level, in Brazil. The nearest listed city is Itabaiana, 16 km away.

Topography around Ribeirópolis

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

Within 3 km, the terrain around Ribeirópolis has only modest variations in elevation — a maximum elevation change of 139 m around an average of 234 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 461 m; within 80 km, large variations in elevation — a maximum elevation change of 759 m.

The land around Ribeirópolis is covered by grassland (81%) within 3 km, grassland (74%) within 16 km, and grassland (57%) within 80 km.

3 km
139 m
16 km
461 m
80 km
759 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Itabaiana 16 km · Campo do Brito 23 km · Nossa Senhora das Dores 25 km · Areia Branca 27 km · Nossa Senhora da Glória 36 km · Carira 37 km · Capela 40 km · Laranjeiras 40 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 Ribeirópolis (-10.5394°, -37.4167°, elevation 239 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).