Key West
Florida, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Key West, FL

A beach pier in Key West, Florida, with palm trees in the background
A beach pier in Key West, Florida, with palm trees in the background
January is a delightful month in the mild winter of Key West when the average temperatures are in a comfortable range of 65°F (18.3°C) to 75°F (23.9°C). Rain is not a showstopper in the dry season. The weather is pleasant, with a multitude of outdoor activities at disposal. Winter is usually devoid of extremely low temperatures.
Beware - Key West is a small place, a collection of a few islands, and it gets crowded with enthusiastic tourists during the winter. January is a beautiful time to traverse the island on foot, enjoy the food and wine festival, and explore the various attractions with the ultraviolet index of the sun at a relative low of 6.

What is the coldest month in Key West?

Enero is the coldest month in Key West, with an average high-temperature of 74.3°F (23.5°C) and an average low-temperature of 64.2°F (17.9°C).

What is the temperature in Enero in Key West?

In Key West, in Enero, the average high-temperature is 74.3°F (23.5°C), and the average low-temperature is 64.2°F (17.9°C).

What is the average humidity in Enero in Key West?

The average relative humidity in Enero in Key West is 76%.

How many days does it rain in Enero in Key West?

In Key West, in Enero, it is raining for 6.2 days, with typically 1.85" (47mm) of accumulated precipitation.

When is the ocean coldest in Key West?

Enero and Febrero, with an average ocean temperature of 71.2°F (21.8°C), are months with the coldest seawater in Key West, Florida.

What is the ocean temperature in Enero in Key West?

In Key West, in Enero, the average water temperature is 71.2°F (21.8°C). Swimming in 71.2°F (21.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in Enero in Key West?

In Enero, the average length of the day is 10.8h.

How many hours of sunshine does Key West have in Enero?

In Key West, the average sunshine in Enero is 8.1h.

What are the months with the lowest UV index in Key West?

Enero and Diciembre, with an average maximum UV index of 6, are months with the lowest UV index in Key West.

What is the UV index reading in Enero in Key West?

In Enero, the average daily maximum UV index in Key West is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Key West, FL
  • Average high temperature in January: 74.3°F

The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is January (74.3°F).

  • Average low temperature in January: 64.2°F

The month with the highest average low temperature is July (79.8°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).

Average humidity in January - Key West, FL
  • Average humidity in January: 76%

The month with the highest relative humidity is December (76.2%).
The month with the lowest relative humidity is April (70.1%).

Average rainfall in January - Key West, FL
  • Average rainfall in January: 1.9"

The wettest month (with the highest rainfall) is September (6.5").
The driest month (with the lowest rainfall) is March (1.6").

Average rainfall days in January - Key West, FL
  • Average rainfall days in January: 6.2 days

The month with the highest number of rainy days is September (16.2 days).
The month with the lowest number of rainy days is April (4.5 days).

Average sea temperature in January - Key West, FL
  • Average sea temperature in January: 71.2°F

The best month for swimming (with the highest average sea temperature) is August (86.9°F).
Coldest months (with the lowest average sea temperature) are January and February (71.2°F).

Average daylight in January / Average sunshine in January - Key West, FL
  • Average daylight in January: 10.8h

The month with the longest days is June (Average daylight: 13.6h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in January: 8.1h

The month with most sunshine is May (Average sunshine: 11h).
The month with least sunshine is December (Average sunshine: 7.6h).

Average UV index in January - Key West, FL
  • Average UV index in January: 6

Months with the highest UV index are April, May, June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 6).