Hollywood
Florida, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Hollywood, FL

The first month of the autumn, September, is also a hot month in Hollywood, Florida, with average temperature ranging between min 80.4°F (26.9°C) and max 86.2°F (30.1°C).

Temperature

In Hollywood, the average high-temperature in September is almost the same as in August - a still hot 86.2°F (30.1°C). The average low-temperature, in September, is 80.4°F (26.9°C).

Heat index

The average heat index is estimated at a very hot 96.8°F (36°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, clothing, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September is 73%.

Rainfall

In Hollywood, during September, the rain falls for 26.9 days and regularly aggregates up to 7.68" (195mm) of precipitation. In Hollywood, during the entire year, the rain falls for 240.3 days and collects up to 50.75" (1289mm) of precipitation.

Ocean temperature

In September, the average ocean temperature is 85.1°F (29.5°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In September, the average length of the day is 12.3h.

Sunshine

The average sunshine in September is 9h.

UV index

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 risk from the exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Hollywood?

The average high-temperature, in September, in Hollywood, Florida, is 86.2°F (30.1°C), while the average low-temperature is 80.4°F (26.9°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that represents influence of the relative humidity to air temperaure, is appraised at 96.8°F (36°C).

What is the average humidity in September in Hollywood?

In Hollywood, Florida, the average relative humidity in September is 73%.

How much does it rain in Hollywood in September?

In Hollywood, during September, the rain falls for 26.9 days and regularly aggregates up to 7.68" (195mm) of precipitation.

What is the ocean temperature in September in Hollywood?

In September, the average ocean temperature in Hollywood is 85.1°F (29.5°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

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

In September, the average length of the day is 12.3h.

How long on average sun shines in September in Hollywood?

In September, the average sunshine in Hollywood is 9h.

When is the highest UV index in Hollywood?

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

What is the UV index intensity in September in Hollywood?

In September, the average daily maximum UV index in Hollywood is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Hollywood, FL
  • Average high temperature in September: 86.2°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (73.2°F).

  • Average low temperature in September: 80.4°F

The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64°F).

Average humidity in September - Hollywood, FL
  • Average humidity in September: 73%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).

Average rainfall in September - Hollywood, FL
  • Average rainfall in September: 7.68"

The wettest month (with the highest rainfall) is August (8.23").
The driest month (with the lowest rainfall) is January (1.38").

Average rainfall days in September - Hollywood, FL
  • Average rainfall days in September: 26.9 days

The month with the highest number of rainy days is August (28.1 days).
The month with the lowest number of rainy days is February (13 days).

Average sea temperature in September - Hollywood, FL
  • Average sea temperature in September: 85.1°F

The best month for swimming (with the highest average sea temperature) is August (86.3°F).
Coldest months (with the lowest average sea temperature) are January and February (74.2°F).

Average daylight in September / Average sunshine in September - Hollywood, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.8h).
The month with shortest days is December (Average daylight: 10.5h).

  • Average sunshine in September: 9h

The month with most sunshine is July (Average sunshine: 10.9h).
The month with least sunshine is December (Average sunshine: 6.2h).

Average UV index in September - Hollywood, FL
  • Average UV index in September: 7

Months with the highest UV index are May, June, July, August and September (UV index 7).
Months with the lowest UV index are January and December (UV index 5).