April weather forecast
Key Biscayne, FL

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The beautiful and dramatic landscape of the Miami Crandon Park in Key Biscayne, Florida
The beautiful and dramatic landscape of the Miami Crandon Park in Key Biscayne, Florida

Weather in April

April, the same as March, is another warm spring month in Key Biscayne, Florida, with an average temperature fluctuating between 79.3°F (26.3°C) and 73.8°F (23.2°C).

Temperature

Key Biscayne experiences a transition to a still moderately hot 79.3°F (26.3°C) in average high-temperatures with the arrival of April, not greatly differing from March's 75.6°F (24.2°C). Key Biscayne, in the month of April, notes an average low temperature of 73.8°F (23.2°C), indicating a small decrease from the daytime highs.

Humidity

In Key Biscayne, Florida, the average relative humidity in April is 72%.

Rainfall

In April, in Key Biscayne, the rain falls for 12 days. Throughout April, 0.75" (19mm) of precipitation is accumulated. In Key Biscayne, during the entire year, the rain falls for 182.7 days and collects up to 16.38" (416mm) of precipitation.

Ocean temperature

In April, the average ocean temperature is 79°F (26.1°C).
Note: Water temperature ranging between 77°F (25°C) and 84.2°F (29°C) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

In Key Biscayne, the average length of the day in April is 12h and 47min.
On the first day of the month, sunrise is at 7:10 am and sunset at 7:37 pm. On the last day of April, sunrise is at 6:44 am and sunset at 7:51 pm EDT.

Sunshine

In April, the average sunshine is 10h.

UV index

In April, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 6 during April translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Beware! Reflections from sand and water can intensify the Sun's UV radiation.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Key Biscayne in April?

The average high-temperature, in April, in Key Biscayne, is 79.3°F (26.3°C), while the average low-temperature is 73.8°F (23.2°C).

What is the average humidity in April in Key Biscayne?

In April, the average relative humidity in Key Biscayne is 72%.

How much does it rain in Key Biscayne in April?

In Key Biscayne, Florida, during April, the rain falls for 12 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How warm is the water in April in Key Biscayne?

In Key Biscayne, the average seawater temperature in April is 79°F (26.1°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 Biscayne have in April?

In April, the average day length in Key Biscayne, Florida, is 12h and 47min.

What time are sunrise and sunset in April in Key Biscayne?

On the first day of April, sunrise is at 7:10 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:51 pm EDT.

How long on average sun shines in April in Key Biscayne?

In Key Biscayne, the average sunshine duration in April is 10h.

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

In April, the average daily maximum UV index in Key Biscayne is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.

Average temperature in April
Key Biscayne, FL

Average temperature in April - Key Biscayne, FL
  • Average high temperature in April: 79.3°F

The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is January (73°F).

  • Average low temperature in April: 73.8°F

The month with the highest average low temperature is August (82.6°F).
The coldest month (with the lowest average low temperature) is January (65.1°F).

Average pressure in April
Key Biscayne, FL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).

Average wind speed in April
Key Biscayne, FL

Average wind speed in April - Key Biscayne, FL
  • Average wind speed in April: 11.3mph

The windiest month (with the highest average wind speed) is March (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).

Average humidity in April
Key Biscayne, FL

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

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (70%).

Average rainfall in April
Key Biscayne, FL

Average rainfall in April - Key Biscayne, FL
  • Average rainfall in April: 0.75"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is January (0.43").

Average rainfall days in April
Key Biscayne, FL

Average rainfall days in April - Key Biscayne, FL
  • Average rainfall days in April: 12 days

The month with the highest number of rainy days is September (24.5 days).
The month with the least rainy days is February (8.7 days).

Average sea temperature in April
Key Biscayne, FL

Average sea temperature in April - Key Biscayne, FL
  • Average sea temperature in April: 78.9°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

Average daylight in April /
Average sunshine in April
Key Biscayne, FL

Average daylight in April / Average sunshine in April - Key Biscayne, FL
  • Average daylight in April: 12h and 5min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in April: 10h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

Average sunshine days in April
Key Biscayne, FL

Average sunshine days in April - Key Biscayne, FL
  • Average sunshine days in April: 13.9 days

The month with the most sunshine days is March (17 days).
The month with the least sunshine days is September (3.2 days).

Average UV index in April
Key Biscayne, FL

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

The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January and December (UV index 5).

Average cloud cover in April
Key Biscayne, FL

Average cloud cover in April - Key Biscayne, FL
  • Average cloud cover in April: 26

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).

Average visibility in April
Key Biscayne, FL

Average visibility in April - Key Biscayne, FL
  • Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Key Biscayne, Florida, USA

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