March weather forecast and climate
Key Largo, FL

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

Weather in March

The first month of the spring, March, is also a moderately hot month in Key Largo, Florida, with average temperature ranging between max 74.5°F (23.6°C) and min 70.2°F (21.2°C).

Temperature

In March, the average high-temperature is almost the same as in February - a still warm 74.5°F (23.6°C). In Key Largo, the average low-temperature is 70.2°F (21.2°C).

Humidity

March is the least humid month, with an average relative humidity of 73%.

Rainfall

March is the month with the least rainfall. Rain falls for 11.4 days and accumulates 0.59" (15mm) of precipitation.

Ocean temperature

In Key Largo, the average water temperature is 75.9°F (24.4°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.9°F (24.4°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 Key Largo, the average length of the day in March is 12h.

Sunshine

In March, the average sunshine in Key Largo, Florida, is 8.7h.

UV index

In March, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 6 transform into the following instructions:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in March in Key Largo?

The average high-temperature, in March, in Key Largo, is 74.5°F (23.6°C), while the average low-temperature is 70.2°F (21.2°C).

What is the least humid month in Key Largo?

March is the least humid month, with an average relative humidity of 73%.

What is the average humidity in March in Key Largo?

In Key Largo, the average relative humidity in March is 73%.

How many days does it rain in March in Key Largo?

In Key Largo, Florida, in March, during 11.4 rainfall days, 0.59" (15mm) of precipitation is typically accumulated.

What is the driest month in Key Largo?

The month with the least rainfall in Key Largo is March when the rain falls for 11.4 days and typically collects 0.59" (15mm) of precipitation.

What is the water temperature in March in Key Largo?

In Key Largo, in March, the average water temperature is 75.9°F (24.4°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.9°F (24.4°C).

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

The average length of the day in March in Key Largo, Florida, is 12h.

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

In March, the average sunshine in Key Largo is 8.7h.

What is the UV index intensity in March in Key Largo?

In March, the average daily maximum UV index in Key Largo is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in March
Key Largo, FL

Average temperature in March - Key Largo, FL
  • Average high temperature in March: 74.5°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 March: 70.2°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 March
Key Largo, FL

Average pressure in March - Key Largo, FL
  • Average pressure in March: 30.08"

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

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Average wind speed in March
Key Largo, FL

Average wind speed in March - Key Largo, FL
  • Average wind speed in March: 12.8mph

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 March
Key Largo, FL

Average humidity in March - Key Largo, FL
  • Average humidity in March: 73%

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 March
Key Largo, FL

Average rainfall in March - Key Largo, FL
  • Average rainfall in March: 0.59"

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 March
Key Largo, FL

Average rainfall days in March - Key Largo, FL
  • Average rainfall days in March: 11.4 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 March
Key Largo, FL

Average sea temperature in March - Key Largo, FL
  • Average sea temperature in March: 75.8°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 March /
Average sunshine in March
Key Largo, FL

Average daylight in March / Average sunshine in March - Key Largo, FL
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.6h).

  • Average sunshine in March: 8.7h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in March
Key Largo, FL

Average sunshine days in March - Key Largo, FL
  • Average sunshine days in March: 17.1 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 March
Key Largo, FL

Average UV index in March - Key Largo, FL
  • Average UV index in March: 6

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 March
Key Largo, FL

Average cloud cover in March - Key Largo, FL
  • Average cloud cover in March: 27

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 March
Key Largo, FL

Average visibility in March - Key Largo, FL
  • Average visibility in March: 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).

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