Sunny Isles Beach weather in September

In September, Sunny Isles Beach sees average daytime highs of 83°F and overnight lows near 79°F, with 6.5 in of rain across 20.9 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 83°F through the month. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Sunny Isles Beach's 12th-clearest and 9th-windiest month. For the whole year in context, see Sunny Isles Beach's year-round climate.

Daytime high
83°
3rd warmest
Overnight low
79°
10th coldest
Rainfall
6.5 in
20.9 wet days
Daylight
12 h 12 min
6:10 AM – 6:19 PM
Cloud cover
66%
12th clearest
Wind
9 mph
9th windiest
Solar energy
5 kWh/m²
Travel score
4.4
out of 10

Sunny Isles Beach is city in Miami-Dade County, Florida, United States of America.

Founded
1997

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 83°F through the month.

A typical September day in Sunny Isles Beach reaches about 83°F in the afternoon and slips back to 79°F overnight — a 3°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 84°F. Set against its neighbours, September runs on par with August and about 2°F warmer than October.

65°70°75°80°85°151015202530
Avg high (°F)Avg low (°F)
18380
28380
38380
48380
58380
68380
78380
88380
98380
108380
118380
128380
138379
148379
158379
168379
178379
188379
198379
208379
218379
228379
238379
248279
258279
268279
278279
288279
298279
308279

How September really feels in Sunny Isles Beach

Once humidity and wind are folded in, September averages 19 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
19
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sunny Isles Beach weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan73° / 68°2.5910.67.1
Feb73° / 68°1.97.611.17.4
Mar74° / 70°2.38.411.87.4
Apr77° / 73°2.48.912.67.3
May79° / 76°3.81213.36.5
Jun82° / 79°5.518.113.65.0
Jul83° / 80°3.617.813.54.7
Aug84° / 80°5.319.712.94.4
Sep83° / 79°6.520.912.24.4
Oct81° / 77°5.415.911.45.7
Nov77° / 73°3.010.610.76.9
Dec74° / 70°2.110.610.47.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23862
33862
43862
54060
64060
74159
84159
94159
104357
114357
124357
134456
144456
154654
164654
174555
184555
194555
204555
214555
224456
234456
244456
254456
264456
274456
284555
294654
304654

Chance of precipitation in September

Any precipitation

Sunny Isles Beach gets around 6.5 in of rain over 20.9 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 71% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
170
271
371
471
571
670
770
870
970
1069
1169
1269
1368
1468
1568
1668
1767
1867
1968
2068
2168
2268
2369
2469
2569
2669
2769
2868
2968
3067

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
114158
214257
314356
414455
514653
614752
714851
824950
925048
1025147
1125246
1225345
1325543
1435542
1535641
1635740
1735839
1835938
1945838
2045937
2146036
2246135
2346234
2456233
2556332
2666331
2766331
2876330
2976330
3086329

Wind in September

Winds average 9 mph in September.

Across September, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over September. Sunrise moves from 6:04 AM to 6:16 AM, and sunset from 6:36 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:046:36
212.56:056:35
312.56:056:34
412.56:056:33
512.46:066:32
612.46:066:31
712.46:076:30
812.46:076:29
912.36:076:27
1012.36:086:26
1112.36:086:25
1212.36:096:24
1312.26:096:23
1412.26:096:22
1512.26:106:20
1612.26:106:19
1712.16:116:18
1812.16:116:17
1912.16:126:16
2012.06:126:15
2112.06:126:14
2212.06:136:12
2312.06:136:11
2411.96:146:10
2511.96:146:09
2611.96:156:08
2711.96:156:07
2811.86:156:06
2911.86:166:04
3011.86:166:03

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5 kWh/m².

For context, solar energy here swings from a low near 3.25 kWh/m² to a high of 6.29 kWh/m² in May across the year — September's 5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.9Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.6Bright
Planning a trip in September

Hazard calendar for Sunny Isles Beach

In seasonPeak

In September, Sunny Isles Beach sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Sunny Isles Beach sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Sunny Isles Beach?

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

4.4
Sightseeing
11th-best month of the year
5.1
Beach & pool
12th-best month of the year

September is a reasonable time to visit Sunny Isles Beach for sightseeing.

What to pack for Sunny Isles Beach in September

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

In September, Sunny Isles Beach sees daytime highs around 83°F and nights near 79°F. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Sunny Isles Beach in September

The nearest coast averages about 85°F 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 August at about 85°F and coldest in February near 76°F.

The water stays above 68°F all year — warm enough for a swim any month.

75°80°85°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan76Warm
Feb76Warm
Mar77Warm
Apr78Warm
May81Warm
Jun83Tropical
Jul85Tropical
Aug85Tropical
Sep85Tropical
Oct83Tropical
Nov80Warm
Dec78Warm

UV index in Sunny Isles Beach in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sunny Isles Beach peaks around July 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 12UV 12Dec 18UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr10Very high
May10Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Sunny Isles Beach 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 Sunny Isles Beach is worst in July — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1722 µg/m³Nov 2010 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar13Moderate
Apr14Moderate
May15Moderate
Jun18Moderate
Jul23Moderate
Aug19Moderate
Sep14Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Sunny Isles Beach?

Sunny Isles Beach sits at 26.0°N, 80.1°W, 3 ft above sea level, in United States. The nearest listed city is Aventura, 1.2 mi away.

Topography around Sunny Isles Beach

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sunny Isles Beach.

Within 2 miles, the terrain around Sunny Isles Beach has only modest variations in elevation — a maximum elevation change of 66 ft around an average of 7 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 138 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 203 ft.

The land around Sunny Isles Beach is covered by water (55%) and artificial surfaces (31%) within 2 miles, water (55%) and artificial surfaces (32%) within 10 miles, and water (43%) and wetland (36%) within 50 miles.

2 miles
66 ft
10 miles
138 ft
50 miles
203 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Aventura 1.2 mi · Ojus 1.9 mi · Hallandale Beach 2.5 mi · North Miami Beach 2.5 mi · Ives Estates 3.7 mi · Hollywood 4.3 mi · West Park 5.0 mi · Golden Glades 5.6 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Sunny Isles Beach (25.9506°, -80.1228°, elevation 3 ft), 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. 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).