September weather forecast
Jumeau, FL

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Weather in September

September, the first month of the autumn in Jumeau, is still a tropical month, with an average temperature ranging between min 72.9°F (22.7°C) and max 88.2°F (31.2°C).

Temperature

Jumeau measures an average high-temperature of a still hot 88.2°F (31.2°C) in September, nearly consistent with the preceding month. September brings Jumeau a consistent average low-temperature of 72.9°F (22.7°C).

Heat index

September's average heat index is calculated to be a scorching 105.8°F (41°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The most humid month is September, with an average relative humidity of 79%.

Rainfall

In Jumeau, during September, the rain falls for 18.8 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Jumeau, there are 160.2 rainfall days, and 21.81" (554mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Daylight

In Jumeau, the average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:50 pm. On the last day of September, in Jumeau, Florida, sunrise is at 7:22 am and sunset at 7:15 pm EDT.

Sunshine

In Jumeau, Florida, the average sunshine in September is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. 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. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Jumeau in September?

In Jumeau, 88.2°F (31.2°C) is the average high-temperature and 72.9°F (22.7°C) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is calculated to be 105.8°F (41°C).

What is the most humid month in Jumeau?

September is the most humid month in Jumeau, Florida, with an average relative humidity of 79%.

What is the average humidity in September in Jumeau?

In Jumeau, Florida, the average relative humidity in September is 79%.

How many days does it rain in September in Jumeau?

In Jumeau, Florida, in September, during 18.8 rainfall days, 1.97" (50mm) of precipitation is typically accumulated.

When it does not snow in Jumeau?

February through December are months without snowfall in Jumeau, Florida.

What is the average length of the day in September in Jumeau?

In Jumeau, the average day length in September is 12h and 19min.

When are sunrise and sunset in September in Jumeau?

On the first day of September, sunrise is at 7:07 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:15 pm EDT.

How many hours of sunshine does Jumeau have in September?

In Jumeau, Florida, the average sunshine duration in September is 8.9h.

What are the months with the highest UV index in Jumeau?

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

How high is the UV index in September in Jumeau?

The average daily maximum UV index in September in Jumeau is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Jumeau, FL

Average temperature in September - Jumeau, FL
  • Average high temperature in September: 88.2°F

The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (67.1°F).

  • Average low temperature in September: 72.9°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (49.3°F).

Average pressure in September
Jumeau, FL

Average pressure in September - Jumeau, FL
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

Average wind speed in September
Jumeau, FL

Average wind speed in September - Jumeau, FL
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).

Average humidity in September
Jumeau, FL

Average humidity in September - Jumeau, FL
  • Average humidity in September: 79%

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is March (72%).

Average rainfall in September
Jumeau, FL

Average rainfall in September - Jumeau, FL
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is March (0.67").

Average rainfall days in September
Jumeau, FL

Average rainfall days in September - Jumeau, FL
  • Average rainfall days in September: 18.8 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is January (6.9 days).

Average snowfall in September
Jumeau, FL

Average snowfall in September - Jumeau, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Jumeau, FL

Average snowfall days in September - Jumeau, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Jumeau, FL

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

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in September: 8h and 5min

The months with the most sunshine are May and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

Average sunshine days in September
Jumeau, FL

Average sunshine days in September - Jumeau, FL
  • Average sunshine days in September: 8.3 days

The month with the most sunshine days is January (22 days).
The month with the least sunshine days is August (5 days).

Average UV index in September
Jumeau, FL

Average UV index in September - Jumeau, 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 4).

Average cloud cover in September
Jumeau, FL

Average cloud cover in September - Jumeau, FL
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 35).
The month with the least cloud cover is May (Cloud cover 26).

Average visibility in September
Jumeau, FL

Average visibility in September - Jumeau, 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).

Jumeau, Florida, USA

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