October weather forecast and climate
Duck Key, FL

October, like September, in Duck Key, Florida, is another warm autumn month, with temperature in the range of an average low of 79.3°F (26.3°C) and an average high of 82.2°F (27.9°C).

Temperature

In Duck Key, the average high-temperature in October is essentially the same as in September - a still warm 82.2°F (27.9°C). In October, the average low-temperature is 79.3°F (26.3°C).

Heat index

The average heat index is estimated at a hot 88°F (31.1°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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', 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 (pregnancy, clothing, wind). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In Duck Key, the average relative humidity is 75%.

Rainfall

In October, in Duck Key, the rain falls for 18.5 days. Throughout October, 3.27" (83mm) of precipitation is accumulated. In Duck Key, during the entire year, the rain falls for 186.2 days and collects up to 24.45" (621mm) of precipitation.

Ocean temperature

In Duck Key, the average seawater temperature in October is 82.9°F (28.3°C).
Note: 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.

Daylight

The average length of the day in Duck Key is 11.6h.

Sunshine

In Duck Key, the average sunshine in October is 7.3h.

UV index

April through October, 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 risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In October, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in October in Duck Key?

In October, in Duck Key, the average high-temperature is 82.2°F (27.9°C), and the average low-temperature is 79.3°F (26.3°C). In October, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, is estimated at 88°F (31.1°C).

What is the average humidity in October in Duck Key?

In October, the average relative humidity in Duck Key is 75%.

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

In Duck Key, during October, the rain falls for 18.5 days and regularly aggregates up to 3.27" (83mm) of precipitation.

What is the ocean temperature in October in Duck Key?

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

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

In Duck Key, the average length of the day in October is 11.6h.

How long on average sun shines in October in Duck Key?

In October, the average sunshine is 7.3h.

What is the month with the highest UV index in Duck Key?

Months with the highest UV index in Duck Key, Florida, are April through October, with an average maximum UV index of 7.

What is the UV index intensity in October in Duck Key?

In Duck Key, Florida, the average daily maximum UV index in October is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in October - Duck Key, FL
  • Average high temperature in October: 82.2°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.9°F).

  • Average low temperature in October: 79.3°F

The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (67.5°F).

Average pressure in October - Duck Key, FL
  • Average pressure in October: 29.94"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are September and October (29.94").

Average wind speed in October - Duck Key, FL
  • Average wind speed in October: 12.8mph

The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (9mph).

Average humidity in October - Duck Key, FL
  • Average humidity in October: 75%

Months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is March (73%).

Average rainfall in October - Duck Key, FL
  • Average rainfall in October: 3.27"

The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the least rainfall) is March (0.43").

Average rainfall days in October - Duck Key, FL
  • Average rainfall days in October: 18.5 days

The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (10.3 days).

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

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest months (with the lowest average sea temperature) are January and February (73.9°F).

Average daylight in October / Average sunshine in October - Duck Key, FL
  • Average daylight in October: 11.6h

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: 7.3h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.6h).

Average sunshine days in October - Duck Key, FL
  • Average sunshine days in October: 8.9 days

The month with the most sunshine days is March (18 days).
The month with the least sunshine days is September (4.6 days).

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

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

Average cloud cover in October - Duck Key, FL
  • Average cloud cover in October: 32

Months with the most cloud cover are January and October (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 23).

Average visibility in October - Duck Key, 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).