September weather forecast
Sunny Isles Beach, FL

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The stunning skyscrapers of the cityscape along the Sunny Isles Beach, Florida, with a scenic reflection in the ocean water
The stunning skyscrapers of the cityscape along the Sunny Isles Beach, Florida, with a scenic reflection in the ocean water

Weather in September

September, the first month of the autumn in Sunny Isles Beach, is also a hot month, with an average temperature fluctuating between 87.8°F (31°C) and 75.2°F (24°C).

Temperature

September experiences an average high-temperature of a still tropical 87.8°F (31°C), barely different from August's 89.6°F (32°C). During the month of September, an average low-temperature of 75.2°F (24°C) is recorded in Sunny Isles Beach.

Rainfall

In September, the rain falls for 17 days. Throughout September, 7.52" (191mm) of precipitation is accumulated. Throughout the year, there are 135 rainfall days, and 55.98" (1422mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature in Sunny Isles Beach is 84.2°F (29°C).
Note: For engaging in any water activities, temperatures from 77°F (25°C) to 84.2°F (29°C) are viewed as outstanding and exceptionally pleasing for prolonged durations.

Daylight

In September, the average length of the day is 12h and 18min.
On the first day of September, sunrise is at 7:00 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

Sunshine

In Sunny Isles Beach, the average sunshine in September is 9h.

UV index

The average daily maximum UV index in September is 10. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In September, a daily maximum UV index of 10 leads to the following instructions:
Immediate care is essential; skin and eyes can be harmed in no time without it. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Use liberally and reapply a broad-spectrum sunscreen with at least SPF 30 every two hours and right after outdoor activities or a swim. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

During September, Sunny Isles Beach experiences an average high-temperature of 87.8°F (31°C) and a low-temperature of 75.2°F (24°C).

How many days does it rain in September?

In Sunny Isles Beach, in September, during 17 rainfall days, 7.52" (191mm) of precipitation is typically accumulated.

What is the water temperature in September?

In Sunny Isles Beach, in September, the average water temperature is 84.2°F (29°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September?

The average day length in September is 12h and 18min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 7:00 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:07 pm EDT.

How long on average sun shines in September?

In Sunny Isles Beach, the average sunshine duration in September is 9h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 10. A UV Index of 8 to 10 symbolizes a very high health threat from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Sunny Isles Beach, FL

Average temperature in September - Sunny Isles Beach, FL
  • Average high temperature in September: 88°F

The warmest months (with the highest average high temperature) are July and August (90°F).
The months with the lowest average high temperature are January and February (75°F).

  • Average low temperature in September: 75°F

The month with the highest average low temperature is August (77°F).
The coldest month (with the lowest average low temperature) is January (59°F).

Average rainfall in September
Sunny Isles Beach, FL

Average rainfall in September - Sunny Isles Beach, FL
  • Average rainfall in September: 7.5"

The wettest month (with the highest rainfall) is June (8.5").
The driest month (with the least rainfall) is December (2.1").

Average rainfall days in September
Sunny Isles Beach, FL

Average rainfall days in September - Sunny Isles Beach, FL
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is April (6 days).

Average sea temperature in September
Sunny Isles Beach, FL

Average sea temperature in September - Sunny Isles Beach, FL
  • Average sea temperature in September: 84°F

The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest months (with the lowest average sea temperature) are January, February and March (75°F).

Average daylight in September /
Average sunshine in September
Sunny Isles Beach, FL

Average daylight in September / Average sunshine in September - Sunny Isles Beach, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in September: 9h

The months with the most sunshine are April, May and July (Average sunshine: 10h).
The months with the least sunshine are January, November and December (Average sunshine: 7h).

Average UV index in September
Sunny Isles Beach, FL

Average UV index in September - Sunny Isles Beach, FL
  • Average UV index in September: 10

The months with the highest UV index are April, May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 5).

Sunny Isles Beach, Florida, USA

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