September weather forecastJumeau, FL
September
Weather in September
September, the first month of the autumn in Jumeau, is still a tropical month, with an average temperature varying between 72.9°F (22.7°C) and 88.2°F (31.2°C).Temperature
September's climate shows a minor adjustment in average high-temperatures to a still tropical 88.2°F (31.2°C) from August's 90.1°F (32.3°C). Jumeau observes an average low-temperature of 72.9°F (22.7°C) during September.Heat index
In September, the average heat index is calculated to be an extremely hot 105.8°F (41°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Heat index values are typically calculated for conditions of shade and a light breeze. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
The most humid month is September, with an average relative humidity of 79%.Rainfall
In Jumeau, Florida, in September, it is raining for 18.8 days, with typically 1.97" (50mm) of accumulated precipitation. In Jumeau, during the entire year, the rain falls for 160.2 days and collects up to 21.81" (554mm) of precipitation.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, sunrise is at 7:22 am and sunset at 7:15 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The months with the highest UV index in Jumeau are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 7 during September translates into the following guidance:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 12h and 18min
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 54min
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: 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: 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: 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: 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).
