September weather forecast
Boca Del Mar, FL

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Weather in September

September, the first month of the autumn in Boca Del Mar, is still a warm month, with temperature in the range of an average low of 80.2°F (26.8°C) and an average high of 85.3°F (29.6°C).

Temperature

Boca Del Mar, Florida, indicates an average high-temperature of a moderately hot 85.3°F (29.6°C) in September, showing minor variation from August's 87.1°F (30.6°C). An average nighttime temperature of 80.2°F (26.8°C) marks September.

Heat index

September's mean heat index is computed to be a fiery hot 95°F (35°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Boca Del Mar, the average relative humidity in September is 74%.

Rainfall

In Boca Del Mar, in September, it is raining for 27.8 days, with typically 10.59" (269mm) of accumulated precipitation. Throughout the year, there are 244.6 rainfall days, and 68.54" (1741mm) of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in September is 9h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

In Boca Del Mar, 85.3°F (29.6°C) is the average high-temperature and 80.2°F (26.8°C) is the average low-temperature during September. In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 95°F (35°C).

What is the average humidity in September?

In Boca Del Mar, Florida, the average relative humidity in September is 74%.

How many days does it rain in September in Boca Del Mar?

In Boca Del Mar, during September, the rain falls for 27.8 days and regularly aggregates up to 10.59" (269mm) of precipitation.

How many hours of daylight does Boca Del Mar have in September?

In Boca Del Mar, the average day length in September is 12h and 18min.

When is the sunrise / sunset in September?

On the first day of September in Boca Del Mar, Florida, 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 many hours of sunshine does Boca Del Mar have in September?

The average sunshine duration in September is 9h.

When is the highest UV index?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in September in Boca Del Mar?

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in September
Boca Del Mar, FL

Average temperature in September - Boca Del Mar, FL
  • Average high temperature in September: 85.3°F

The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in September: 80.2°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).

Average pressure in September
Boca Del Mar, FL

Average pressure in September - Boca Del Mar, FL
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

Average wind speed in September
Boca Del Mar, FL

Average wind speed in September - Boca Del Mar, FL
  • Average wind speed in September: 8.4mph

The windiest month (with the highest average wind speed) is March (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in September
Boca Del Mar, FL

Average humidity in September - Boca Del Mar, FL
  • Average humidity in September: 74%

The months with the highest relative humidity are June and December (75%).
The month with the lowest relative humidity is March (70%).

Average rainfall in September
Boca Del Mar, FL

Average rainfall in September - Boca Del Mar, FL
  • Average rainfall in September: 10.59"

The wettest month (with the highest rainfall) is August (12.05").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days in September
Boca Del Mar, FL

Average rainfall days in September - Boca Del Mar, FL
  • Average rainfall days in September: 27.8 days

The month with the highest number of rainy days is August (29.3 days).
The month with the least rainy days is February (12.7 days).

Average daylight in September /
Average sunshine in September
Boca Del Mar, FL

Average daylight in September / Average sunshine in September - Boca Del Mar, FL
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).

Average sunshine days in September
Boca Del Mar, FL

Average sunshine days in September - Boca Del Mar, FL
  • Average sunshine days in September: 1.4 days

The month with the most sunshine days is March (13.3 days).
The month with the least sunshine days is August (0.9 days).

Average UV index in September
Boca Del Mar, FL

Average UV index in September - Boca Del Mar, FL
  • Average UV index in September: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).

Average cloud cover in September
Boca Del Mar, FL

Average cloud cover in September - Boca Del Mar, FL
  • Average cloud cover in September: 31

The month with the most cloud cover is October (Cloud cover 36).
The months with the least cloud cover are March, April, May and July (Cloud cover 29).

Average visibility in September
Boca Del Mar, FL

Average visibility in September - Boca Del Mar, FL
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Boca Del Mar, Florida, USA

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