Itapema weather in September

In September, Itapema sees average daytime highs of 20°C and overnight lows near 17°C, with 137 mm of rain across 12.7 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 23% 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 Itapema's 11th-clearest and 5th-windiest month. For the whole year in context, see Itapema's year-round climate.

Daytime high
20°
9th warmest
Overnight low
17°
4th coldest
Rainfall
137 mm
12.7 wet days
Daylight
11 h 48 min
7:14 AM – 7:04 PM
Cloud cover
67%
11th clearest
Wind
15 km/h
5th windiest
Solar energy
3.81 kWh/m²
Travel score
5.7
out of 10

Itapema 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 20°C through the month.

A typical September day in Itapema reaches about 20°C in the afternoon and slips back to 17°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 22°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11916
21916
31916
42016
52017
62017
72017
82017
92017
102017
112017
122017
132017
142017
152017
162017
172017
182017
192017
202017
212017
222017
232017
242017
252017
262018
272018
282018
292018
302018

Itapema weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 23°18619.113.55.3
Feb26° / 24°16417.8135.2
Mar26° / 23°13618.212.25.6
Apr24° / 21°9812.211.46.6
May22° / 18°1151210.76.4
Jun20° / 16°1069.910.36.3
Jul19° / 15°959.910.56.1
Aug19° / 16°959.5116.2
Sep20° / 17°13712.711.85.7
Oct21° / 19°12713.612.65.8
Nov23° / 20°12014.413.36.1
Dec25° / 22°12715.413.75.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14852
24654
34654
44456
54357
64258
74258
84159
94060
104060
113961
124060
134060
144060
153862
163862
173862
183862
193862
203961
213763
223763
233763
243664
253664
263565
273466
283466
293466
303367

Chance of precipitation in September

Any precipitation

Itapema gets around 137 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 49% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
131
232
333
434
535
636
737
837
938
1039
1139
1240
1341
1441
1542
1642
1743
1843
1944
2044
2145
2246
2347
2447
2548
2648
2749
2849
2949
3049

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12224477
22224478
32223478
42223478
52222479
62222479
722214710
822214710
922214711
1021214711
1121204712
1221204712
1320204613
1420204613
1520214614
1620214514
1720214514
1820214415
1920224415
2020224315
2119234315
2219234215
2318244216
2418244216
2517244216
2617244217
2716244217
2816244218
2916244119
3016244120

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 16 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
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light 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 7:31 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)
111.47:316:57
211.57:306:58
311.57:296:58
411.57:286:59
511.57:266:59
611.67:257:00
711.67:247:00
811.67:237:00
911.77:227:01
1011.77:217:01
1111.77:197:02
1211.77:187:02
1311.87:177:03
1411.87:167:03
1511.87:157:04
1611.87:147:04
1711.97:127:04
1811.97:117:05
1911.97:107:05
2012.07:097:06
2112.07:087:06
2212.07:067:07
2312.07:057:07
2412.17:047:08
2512.17:037:08
2612.17:027:09
2712.17:007:09
2812.26:597:10
2912.26:587:10
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 3.81 kWh/m².

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 5.83 kWh/m² in December across the year — September's 3.81 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.8Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
304.0Moderate
Planning a trip in September

Is September a good time to visit Itapema?

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

5.7
Sightseeing
9th-best month of the year
2.9
Beach & pool
10th-best month of the year

September is a reasonable time to visit Itapema for sightseeing.

What to pack for Itapema in September

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

In September, Itapema sees daytime highs around 20°C and nights near 17°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Itapema in September

The nearest coast averages about 19°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 24 km away) is warmest in February at about 26°C and coldest in August near 18°C.

It's comfortable for a long swim from Oct 4 to Jun 11 — about 8.3 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr24Warm
May22Refreshing
Jun20Cool
Jul18Cool
Aug18Cool
Sep19Cool
Oct21Refreshing
Nov23Refreshing
Dec25Warm

UV index in Itapema 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 Itapema peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 19UV 14Jul 11UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5Moderate
Aug6High
Sep8Very high
Oct9Very high
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Itapema?

Itapema sits at 27.1°S, 48.6°W, 4 m above sea level, in Brazil. The nearest listed city is Camboriú, 8.0 km away.

Topography around Itapema

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

Within 3 km, the terrain around Itapema has significant variations in elevation — a maximum elevation change of 330 m around an average of 62 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 665 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,273 m.

The land around Itapema is covered by trees (47%) and water (33%) within 3 km, trees (43%) and water (39%) within 16 km, and trees (51%) and water (37%) within 80 km.

3 km
330 m
16 km
665 m
80 km
1,273 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Camboriú 8.0 km · Porto Belo 9.0 km · Balneário Camboriú 11 km · Bombinhas 14 km · Tijucas 17 km · Itajaí 21 km · Navegantes 22 km · Governador Celso Ramos 25 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 Itapema (-27.0903°, -48.6114°, elevation 4 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).