October weather forecast and climate
Key Biscayne, FL

The beautiful and dramatic landscape of the Miami Crandon Park in Key Biscayne, Florida
The beautiful and dramatic landscape of the Miami Crandon Park in Key Biscayne, Florida

Weather in October

October, the same as September, is another warm autumn month in Key Biscayne, Florida, with average temperature varying between 82.8°F (28.2°C) and 77.5°F (25.3°C).

Temperature

In October, the average high-temperature is practically the same as in September - a still moderately hot 82.8°F (28.2°C). In Key Biscayne, in October, the average low-temperature is 77.5°F (25.3°C).

Heat index

The average heat index in October is calculated to be a tropical 88.9°F (31.6°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, pregnancy). 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.

Humidity

In Key Biscayne, Florida, the average relative humidity is 74%.

Rainfall

In Key Biscayne, during 17.3 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Key Biscayne, during the entire year, the rain falls for 182.7 days and collects up to 16.38" (416mm) of precipitation.

Ocean temperature

In Key Biscayne, Florida, the average seawater temperature is 82.9°F (28.3°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 October, the average length of the day in Key Biscayne is 11.5h.

Sunshine

In October, the average sunshine is 6.8h.

UV index

Months with the highest UV index in Key Biscayne are May through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in October interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in October in Key Biscayne?

In Key Biscayne, in October, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 77.5°F (25.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in October is calculated to be 88.9°F (31.6°C).

What is the average humidity in October in Key Biscayne?

In Key Biscayne, the average relative humidity in October is 74%.

How many days does it rain in October in Key Biscayne?

In Key Biscayne, Florida, in October, it is raining for 17.3 days, with typically 1.65" (42mm) of accumulated precipitation.

How warm is the water in October in Key Biscayne?

In Key Biscayne, Florida, the average seawater temperature in October is 82.9°F (28.3°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.

How many hours of daylight does Key Biscayne have in October?

In October, the average length of the day in Key Biscayne, Florida, is 11.5h.

How many hours of sunshine does Key Biscayne have in October?

In Key Biscayne, the average sunshine in October is 6.8h.

What are the months with the highest UV index in Key Biscayne?

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

How high is the UV index in October in Key Biscayne?

The average daily maximum UV index in October in Key Biscayne is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in October
Key Biscayne, FL

Average temperature in October - Key Biscayne, FL
  • Average high temperature in October: 82.8°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 (73°F).

  • Average low temperature in October: 77.5°F

The month with the highest average low temperature is August (82.6°F).
The coldest month (with the lowest average low temperature) is January (65.1°F).

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Average pressure in October
Key Biscayne, FL

Average pressure in October - Key Biscayne, FL
  • Average pressure in October: 29.95"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are September and October (29.95").

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Average wind speed in October
Key Biscayne, FL

Average wind speed in October - Key Biscayne, FL
  • Average wind speed in October: 11.1mph

The windiest month (with the highest average wind speed) is March (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).

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Average humidity in October
Key Biscayne, FL

Average humidity in October - Key Biscayne, FL
  • Average humidity in October: 74%

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

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Average rainfall in October
Key Biscayne, FL

Average rainfall in October - Key Biscayne, FL
  • Average rainfall in October: 1.65"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in October
Key Biscayne, FL

Average rainfall days in October - Key Biscayne, FL
  • Average rainfall days in October: 17.3 days

The month with the highest number of rainy days is September (24.5 days).
The month with the least rainy days is February (8.7 days).

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Average sea temperature in October
Key Biscayne, FL

Average sea temperature in October - Key Biscayne, FL
  • Average sea temperature in October: 82.9°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

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Average daylight in October /
Average sunshine in October
Key Biscayne, FL

Average daylight in October / Average sunshine in October - Key Biscayne, FL
  • Average daylight in October: 11.5h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.6h).

  • Average sunshine in October: 6.8h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in October
Key Biscayne, FL

Average sunshine days in October - Key Biscayne, FL
  • Average sunshine days in October: 9 days

The month with the most sunshine days is March (17 days).
The month with the least sunshine days is September (3.2 days).

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Average UV index in October
Key Biscayne, FL

Average UV index in October - Key Biscayne, FL
  • Average UV index in October: 7

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

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Average cloud cover in October
Key Biscayne, FL

Average cloud cover in October - Key Biscayne, FL
  • Average cloud cover in October: 35

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).

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Average visibility in October
Key Biscayne, FL

Average visibility in October - Key Biscayne, FL
  • Average visibility in October: 6mi

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

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