Icapuí weather in September

In September, Icapuí sees average daytime highs of 27°C and overnight lows near 25°C, with 1 mm of rain across 0.3 wet days and about 12 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 89% 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 Icapuí's 1st-clearest and 2nd-windiest month. For the whole year in context, see Icapuí's year-round climate.

Daytime high
27°
12th warmest
Overnight low
25°
3rd coldest
Rainfall
1 mm
0.3 wet days
Daylight
12 hours
5:25 AM – 5:23 PM
Cloud cover
17%
1st clearest
Wind
30 km/h
2nd windiest
Solar energy
6.88 kWh/m²
Travel score
8.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Icapuí reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62724
72724
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725

Icapuí weather by month

How September compares with the rest of the year at a glance. September is the 12th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 26°9013.912.26.0
Feb28° / 26°12516.312.25.3
Mar28° / 26°19921.8124.7
Apr28° / 26°20221.111.94.7
May28° / 26°9613.611.85.7
Jun28° / 25°508.411.77.0
Jul27° / 25°284.111.87.8
Aug27° / 24°30.911.88.6
Sep27° / 25°10.3128.8
Oct27° / 25°20.612.18.6
Nov27° / 26°41.112.28.3
Dec27° / 26°185.512.37.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 89% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 5%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1946
2946
3946
4946
5946
6946
7946
8946
9946
10955
11955
12955
13955
14964
15964
16964
17964
18964
19964
20964
21964
22964
23964
24964
25964
26964
27955
28955
29955
30955

Chance of precipitation in September

Any precipitation

Icapuí gets around 1 mm of rain over 0.3 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
13961
23961
33862
43862
53862
63862
73763
83763
93664
103565
113466
123367
133268
143169
153070
162971
172872
182773
192575
202476
212377
222278
232179
242080
251981
261882
271783
281684
291585
301585

Wind in September

Winds average 30 km/h in September.

Across September, daily wind ranges from about 29 km/h on the calmest days to 31 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
129windy
230windy
330windy
430windy
530windy
630windy
730windy
830windy
930windy
1030windy
1130windy
1230windy
1330windy
1430windy
1530windy
1630windy
1730windy
1830windy
1930windy
2030windy
2130windy
2230windy
2330windy
2430windy
2530windy
2631windy
2731windy
2831windy
2931windy
3031windy

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 5:32 AM to 5:18 AM, and sunset from 5:26 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:325:26
211.95:315:26
311.95:315:26
411.95:305:26
511.95:305:26
611.95:295:25
711.95:295:25
811.95:295:25
911.95:285:25
1011.95:285:24
1112.05:275:24
1212.05:275:24
1312.05:265:24
1412.05:265:23
1512.05:255:23
1612.05:255:23
1712.05:245:23
1812.05:235:23
1912.05:235:22
2012.05:225:22
2112.05:225:22
2212.05:215:22
2312.05:215:21
2412.05:215:21
2512.05:205:21
2612.05:205:21
2712.05:195:20
2812.05:195:20
2912.05:185:20
3012.05:185:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.88 kWh/m².

For context, solar energy here swings from a low near 5.18 kWh/m² to a high of 7.05 kWh/m² in October across the year — September's 6.88 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.9Intense
166.9Intense
176.9Intense
186.9Intense
196.9Intense
207.0Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.1Intense
Planning a trip in September

Hazard calendar for Icapuí

In seasonPeak

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

Icapuí's monsoon runs February–May, 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 Icapuí?

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

8.8
Sightseeing
1st-best month of the year
8.9
Beach & pool
1st-best month of the year

September is one of the better times to visit Icapuí for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Icapuí in September

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

In September, Icapuí sees daytime highs around 27°C and nights near 25°C. Pack sun protection and a windbreaker. Worth having: light clothes.

sun protectiona windbreakerlight clothes

Sea temperature near Icapuí in September

The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in April at about 29°C and coldest in August near 27°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Warm
Jul27Warm
Aug27Warm
Sep27Warm
Oct27Warm
Nov28Warm
Dec28Warm

UV index in Icapuí 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 Icapuí peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 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 highExtremeMar 16UV 15Jul 13UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec11Extreme
Location & terrain

Where is Icapuí?

Icapuí sits at 4.7°S, 37.4°W, 9 m above sea level, in Brazil. The nearest listed city is Areia Branca, 36 km away.

Topography around Icapuí

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

Within 3 km, the terrain around Icapuí has only modest variations in elevation — a maximum elevation change of 49 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 105 m; within 80 km, significant variations in elevation — a maximum elevation change of 271 m.

The land around Icapuí is covered by grassland (27%), shrubs (23%) and water (22%) within 3 km, water (49%) and shrubs (24%) within 16 km, and water (38%) and shrubs (34%) within 80 km.

3 km
49 m
16 km
105 m
80 km
271 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Areia Branca 36 km · Aracati 49 km · Jaguaruana 49 km · Baraúna 50 km · Mossoró 53 km · Fortim 57 km · Russas 73 km · Quixeré 81 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 Icapuí (-4.7131°, -37.3553°, elevation 9 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).