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

April 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
April has perfect weather in the range of 72°F (22.2°C) to 82°F (27.8°C) with little rain and the least amount of humidity of the year at 70%. Key West is sunny with long days during this period, and there is no dearth of outdoor activities for the tourists.
April is an excellent time to hop onto one of the sailing tours or cruises and watch the dolphins in their natural environment. Take a sunset tour and head to Mallory Square to catch the most breath-taking sunset at the end of the day!

What is the temperature in Abril in Key West?

The average high-temperature, in Abril, in Key West, Florida, is 81.3°F (27.4°C), while the average low-temperature is 71.6°F (22°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that takes the relative humidity and factores it into the air temperature reading, in Abril is evaluated at 85.3°F (29.6°C).

What is the least humid month in Key West?

With an average relative humidity of 70.1%, Abril is the least humid month.

What is the average humidity in Abril in Key West?

In Key West, Florida, the average relative humidity in Abril is 70.1%.

How much does it rain in Key West in Abril?

In Abril, in Key West, Florida, the rain falls for 4.5 days. Throughout Abril, 1.81" (46mm) of precipitation is accumulated.

What is the ocean temperature in Abril in Key West?

In Key West, in Abril, the average water temperature is 77.7°F (25.4°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 Key West have in Abril?

The average length of the day in Abril in Key West, Florida, is 12.8h.

How long on average sun shines in Abril in Key West?

In Key West, the average sunshine in Abril is 10.8h.

When is the highest UV index in Key West?

Abril through Agosto, with an average maximum UV index of 11, are months with the highest UV index in Key West.

How high is the UV index in Abril in Key West?

In Abril, the average daily maximum UV index in Key West, Florida, is 11. A UV Index of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV rays.
Average temperature in April - Key West, FL
  • Average high temperature in April: 81.3°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 April: 71.6°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 April - Key West, FL
  • Average humidity in April: 70.1%

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 April - Key West, FL
  • Average rainfall in April: 1.8"

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 April - Key West, FL
  • Average rainfall days in April: 4.5 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 April - Key West, FL
  • Average sea temperature in April: 77.7°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 April / Average sunshine in April - Key West, FL
  • Average daylight in April: 12.8h

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 April: 10.8h

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 April - Key West, FL
  • Average UV index in April: 11

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).