April weather forecast and climate
Longboat Key, FL

April, the same as March, is another warm spring month in Longboat Key, Florida, with average temperature fluctuating between 67.8°F (19.9°C) and 80.2°F (26.8°C).

Temperature

In Longboat Key, Florida, the average high-temperature slightly increases, from 74.1°F (23.4°C) in March, to a still warm 80.2°F (26.8°C). In April, in Longboat Key, the average low-temperature is 67.8°F (19.9°C).

Humidity

March through May, with an average relative humidity of 72%, are the least humid months in Longboat Key, Florida.

Rainfall

In Longboat Key, in April, it is raining for 11.6 days, with typically 1.34" (34mm) of accumulated precipitation. In Longboat Key, Florida, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

Ocean temperature

In Longboat Key, the average seawater temperature in April is 73.4°F (23°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.4°F (23°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

In April, the average length of the day is 12.8h.

Sunshine

In Longboat Key, the average sunshine is 9.5h.

UV index

In Longboat Key, the average daily maximum UV index in April is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in April in Longboat Key?

In Longboat Key, in April, the average high-temperature is 80.2°F (26.8°C), and the average low-temperature is 67.8°F (19.9°C).

What is the least humid month in Longboat Key?

March through May, with an average relative humidity of 72%, are the least humid months in Longboat Key, Florida.

What is the average humidity in April in Longboat Key?

In April, the average relative humidity is 72%.

How much does it rain in Longboat Key in April?

In Longboat Key, Florida, in April, during 11.6 rainfall days, 1.34" (34mm) of precipitation is typically accumulated.

What is the water temperature in April in Longboat Key?

In Longboat Key, Florida, in April, the average water temperature is 73.4°F (23°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 73.4°F (23°C) water may be enjoyable.

What is the average length of the day in April in Longboat Key?

The average length of the day in April in Longboat Key is 12.8h.

How many hours of sunshine does Longboat Key have in April?

In Longboat Key, Florida, the average sunshine in April is 9.5h.

How high is the UV index in April in Longboat Key?

In April, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in April - Longboat Key, FL
  • Average high temperature in April: 80.2°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in April: 67.8°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

Average pressure in April - Longboat Key, FL
  • Average pressure in April: 30.02"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.95").

Average wind speed in April - Longboat Key, FL
  • Average wind speed in April: 8.7mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in April - Longboat Key, FL
  • Average humidity in April: 72%

The month with the highest relative humidity is December (76%).
Months with the lowest relative humidity are March, April and May (72%).

Average rainfall in April - Longboat Key, FL
  • Average rainfall in April: 1.34"

The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").

Average rainfall days in April - Longboat Key, FL
  • Average rainfall days in April: 11.6 days

The month with the highest number of rainy days is August (26.8 days).
Months with the least rainy days are January, February and November (8.3 days).

Average sea temperature in April - Longboat Key, FL
  • Average sea temperature in April: 73.3°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).

Average daylight in April / Average sunshine in April - Longboat Key, FL
  • Average daylight in April: 12.8h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in April: 9.5h

The month with the most sunshine is May (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

Average sunshine days in April - Longboat Key, FL
  • Average sunshine days in April: 16.1 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).

Average UV index in April - Longboat Key, FL
  • Average UV index in April: 6

Months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

Average cloud cover in April - Longboat Key, FL
  • Average cloud cover in April: 24

Months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).

Average visibility in April - Longboat Key, FL
  • Average visibility in April: 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).