Imbituba weather in September

In September, Imbituba sees average daytime highs of 21°C and overnight lows near 16°C, with 124 mm of rain across 11.5 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 24 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Imbituba's 7th-clearest and 1st-windiest month. For the whole year in context, see Imbituba's year-round climate.

Daytime high
21°
9th warmest
Overnight low
16°
4th coldest
Rainfall
124 mm
11.5 wet days
Daylight
11 h 48 min
7:14 AM – 7:04 PM
Cloud cover
65%
7th clearest
Wind
14 km/h
1st windiest
Solar energy
4.17 kWh/m²
Travel score
6.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical September day in Imbituba reaches about 21°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, September runs on par with August and about 2°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12015
22015
32015
42015
52015
62015
72015
82015
92016
102016
112016
122016
132016
142016
152116
162116
172116
182116
192116
202116
212116
222116
232116
242116
252116
262116
272116
282116
292116
302116

Imbituba weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 22°17217.713.65.3
Feb27° / 22°14017.1135.1
Mar26° / 21°13216.412.25.7
Apr25° / 19°9110.111.36.8
May22° / 17°1189.910.66.7
Jun20° / 15°938.510.26.5
Jul19° / 14°879.310.46.4
Aug20° / 14°888.7116.6
Sep21° / 16°12411.511.86.1
Oct22° / 18°12512.812.76.0
Nov24° / 19°11012.513.46.4
Dec26° / 21°11812.913.86.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
24951
34753
44753
54654
64555
74357
84258
94258
104159
114258
124159
134159
144060
154060
163961
173961
183862
193862
203862
213862
223763
233763
243763
253664
263565
273565
283466
293466
303367

Chance of precipitation in September

Any precipitation

Imbituba gets around 124 mm of rain over 11.5 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 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
130
230
331
432
532
633
734
835
935
1036
1137
1237
1338
1438
1539
1640
1740
1840
1941
2041
2142
2242
2342
2442
2542
2642
2742
2842
2942
3042

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12931365
22831365
32831365
42731366
52731366
62731376
72731376
82730376
92730376
102630386
112630386
122629396
132629396
142528407
152528407
162528407
172528398
182528398
192528398
202528389
212429389
222429389
232329389
242229399
2522293910
2621294010
2721294010
2820294110
2920294111
3019294111

Wind in September

Winds average 14 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 24 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 48 minutes over September. Sunrise moves from 7:32 AM to 6:57 AM, and sunset from 6:57 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:326:57
211.47:316:57
311.57:306:58
411.57:296:58
511.57:276:59
611.57:266:59
711.67:257:00
811.67:247:00
911.67:237:01
1011.77:217:01
1111.77:207:02
1211.77:197:02
1311.77:187:03
1411.87:167:03
1511.87:157:04
1611.87:147:04
1711.97:137:05
1811.97:127:05
1911.97:107:06
2011.97:097:06
2112.07:087:07
2212.07:077:07
2312.07:057:08
2412.17:047:08
2512.17:037:09
2612.17:027:09
2712.27:007:10
2812.26:597:10
2912.26:587:11
3012.26:577:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.17 kWh/m².

For context, solar energy here swings from a low near 2.72 kWh/m² to a high of 6.31 kWh/m² in December across the year — September's 4.17 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Is September a good time to visit Imbituba?

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

6.1
Sightseeing
7th-best month of the year
3.5
Beach & pool
9th-best month of the year

September is a reasonable time to visit Imbituba for sightseeing.

What to pack for Imbituba in September

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

In September, Imbituba sees daytime highs around 21°C and nights near 16°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Imbituba in September

The nearest coast averages about 18°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 14 km away) is warmest in February at about 25°C and coldest in August near 17°C.

It's comfortable for a long swim from Oct 16 to Jun 3 — about 7.6 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar25Warm
Apr24Refreshing
May21Refreshing
Jun19Cool
Jul18Cool
Aug17Cool
Sep18Cool
Oct20Refreshing
Nov22Refreshing
Dec23Refreshing

UV index in Imbituba in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Imbituba peaks around January 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 22UV 13Jul 10UV 4
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Extreme
Apr8Very high
May5Moderate
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct10Very high
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Imbituba?

Imbituba sits at 28.2°S, 48.7°W, 22 m above sea level, in Brazil. The nearest listed city is Garopaba, 25 km away.

Topography around Imbituba

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

Within 3 km, the terrain around Imbituba has significant variations in elevation — a maximum elevation change of 302 m around an average of 36 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 521 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,813 m.

The land around Imbituba is covered by water (40%) and trees (31%) within 3 km, water (60%) within 16 km, and trees (43%) and water (40%) within 80 km.

3 km
302 m
16 km
521 m
80 km
1,813 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Garopaba 25 km · Laguna 29 km · Capivari de Baixo 36 km · Tubarão 41 km · Braço do Norte 49 km · Jaguaruna 55 km · Freguesia do Ribeirao da Ilha 59 km · Ribeirão da Ilha 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 Imbituba (-28.24°, -48.6703°, elevation 22 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).