April weather forecast
Key Largo, FL

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A clear seascape and cloudy evening sky in Key Largo, Florida
A clear seascape and cloudy evening sky in Key Largo, Florida

Weather in April

April marks the beginning of the amusement-laden season in Key Largo, bringing notable changes from March in terms of temperature and precipitation. With the increase in average temperatures, tourists start flocking in large numbers. The city experiences peak sunshine hours, and cloud cover begins to reduce, making it an ideal time for sunbathing and beach activities. The intensity of rainfall also undergoes a significant rise, indicating the approaching warmer months. This month, the highest recorded temperature spikes to 77.5°F (25.3°C) and substantial rainfall of 1.26" (32mm) is observed.

Temperature

The dawn of April sees an average high-temperature of a still moderately hot 77.5°F (25.3°C), subtly contrasting with March's 74.5°F (23.6°C). An average low-temperature of 75°F (23.9°C) characterizes Key Largo's April nights.

Humidity

In April, the average relative humidity is 75%.

Rainfall

In April, the rain falls for 13.3 days. Throughout April, 1.26" (32mm) of precipitation is accumulated. In Key Largo, during the entire year, the rain falls for 190.1 days and collects up to 27.05" (687mm) of precipitation.

Ocean temperature

In April, the average ocean temperature is 78.8°F (26°C).
Note: Ideal surface water temperatures for any water activity fall between 77°F (25°C) and 84.2°F (29°C), offering maximum enjoyment for lengthened periods.

Daylight

In April, the average length of the day is 12h and 46min.
On the first day of the month, sunrise is at 7:12 am and sunset at 7:38 pm. On the last day of April, sunrise is at 6:46 am and sunset at 7:51 pm EDT.

Sunshine

The average sunshine in April is 9.9h.

UV index

The months with the highest UV index in Key Largo are April through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during April translates into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heed this! UV intensity is much stronger when reflected off sand and water.
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Frequently asked questions

What is the temperature in April in Key Largo?

An average high-temperature, in April, in Key Largo, is 77.5°F (25.3°C) and the average low-temperature is 75°F (23.9°C).

What is the average humidity in April in Key Largo?

The average relative humidity in April in Key Largo, Florida, is 75%.

How much does it rain in Key Largo in April?

In Key Largo, in April, it is raining for 13.3 days, with typically 1.26" (32mm) of accumulated precipitation.

How warm is the water in April in Key Largo?

In Key Largo, Florida, in April, the average water temperature is 78.8°F (26°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.

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

In April, the average day length is 12h and 46min.

When are sunrise and sunset in April in Key Largo?

In April, on the first day of the month, sunrise is at 7:12 am and sunset at 7:38 pm. On the last day of the month, in Key Largo, Florida, sunrise is at 6:46 am and sunset at 7:51 pm EDT.

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

In April, the average sunshine duration is 9.9h.

When is the highest UV index in Key Largo?

April through October, with an average maximum UV index of 7, are months with the highest UV index in Key Largo, Florida.

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

In April, the average daily maximum UV index in Key Largo, Florida, is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Key Largo, FL

Average temperature in April - Key Largo, FL
  • Average high temperature in April: 77.5°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 (72.7°F).

  • Average low temperature in April: 75°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 (66.9°F).

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Average pressure in April
Key Largo, FL

Average pressure in April - Key Largo, FL
  • Average pressure in April: 30.01"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).

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Average wind speed in April
Key Largo, FL

Average wind speed in April - Key Largo, FL
  • Average wind speed in April: 12.4mph

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).

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Average humidity in April
Key Largo, FL

Average humidity in April - Key Largo, FL
  • Average humidity in April: 75%

The months with the highest relative humidity are February, June and December (76%).
The month with the lowest relative humidity is March (73%).

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Average rainfall in April
Key Largo, FL

Average rainfall in April - Key Largo, FL
  • Average rainfall in April: 1.26"

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (0.59").

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Average rainfall days in April
Key Largo, FL

Average rainfall days in April - Key Largo, FL
  • Average rainfall days in April: 13.3 days

The month with the highest number of rainy days is September (22.9 days).
The month with the least rainy days is February (9.7 days).

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Average sea temperature in April
Key Largo, FL

Average sea temperature in April - Key Largo, FL
  • Average sea temperature in April: 78.8°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).

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

Average daylight in April / Average sunshine in April - Key Largo, 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: 9h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days in April
Key Largo, FL

Average sunshine days in April - Key Largo, FL
  • Average sunshine days in April: 14.1 days

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (5.2 days).

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Average UV index in April
Key Largo, FL

Average UV index in April - Key Largo, FL
  • Average UV index in April: 7

The 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).

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Average cloud cover in April
Key Largo, FL

Average cloud cover in April - Key Largo, 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).

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Average visibility in April
Key Largo, FL

Average visibility in April - Key Largo, 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).

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Key Largo, Florida, USA

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