January weather forecast and climate
Duck Key, FL

January, like December, is an agreeable winter month in Duck Key, Florida, with average temperature fluctuating between 67.5°F (19.7°C) and 72.9°F (22.7°C).

Temperature

January is the coldest month, with an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 67.5°F (19.7°C).

Humidity

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

Rainfall

In Duck Key, during January, the rain falls for 10.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. 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

Months with the coldest seawater are January and February, with an average ocean temperature of 73.9°F (23.3°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.9°F (23.3°C) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).)

Daylight

The average length of the day in January is 10.8h.

Sunshine

In Duck Key, the average sunshine is 7.2h.

UV index

January is the month with the lowest UV index in Duck Key, Florida, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in Duck Key?

The coldest month is January, with an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 67.5°F (19.7°C).

What is the temperature in January in Duck Key?

The average high-temperature, in January, is 72.9°F (22.7°C), while the average low-temperature is 67.5°F (19.7°C).

What is the average humidity in January in Duck Key?

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

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

In Duck Key, in January, it is raining for 10.5 days, with typically 0.79" (20mm) of accumulated precipitation.

What months are the ocean coldest in Duck Key?

January and February, with an average ocean temperature of 73.9°F (23.3°C), are months with the coldest seawater in Duck Key, Florida.

What is the water temperature in January in Duck Key?

In Duck Key, Florida, in January, the average water temperature is 73.9°F (23.3°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.9°F (23.3°C) water may be enjoyable.

What is the average length of the day in January in Duck Key?

In January, the average length of the day in Duck Key, Florida, is 10.8h.

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

In Duck Key, Florida, the average sunshine in January is 7.2h.

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

With an average maximum UV index of 5, January is the month with the lowest UV index.

How high is the UV index in January in Duck Key?

In Duck Key, Florida, the average daily maximum UV index in January is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in January - Duck Key, FL
  • Average high temperature in January: 72.9°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 January: 67.5°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 January - Duck Key, FL
  • Average pressure in January: 30.1"

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 January - Duck Key, FL
  • Average wind speed in January: 13.4mph

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 January - Duck Key, FL
  • Average humidity in January: 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 January - Duck Key, FL
  • Average rainfall in January: 0.79"

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 January - Duck Key, FL
  • Average rainfall days in January: 10.5 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 January - Duck Key, FL
  • Average sea temperature in January: 73.9°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 January / Average sunshine in January - Duck Key, FL
  • Average daylight in January: 10.8h

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 January: 7.2h

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 January - Duck Key, FL
  • Average sunshine days in January: 16.2 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 January - Duck Key, FL
  • Average UV index in January: 5

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 January - Duck Key, FL
  • Average cloud cover in January: 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 January - Duck Key, FL
  • Average visibility in January: 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).