March 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 March

The first month of the spring, March, is still a warm month in Key Largo, Florida, with an average temperature fluctuating between 70.2°F (21.2°C) and 74.5°F (23.6°C).

Temperature

In March, the average high-temperature is relatively the same as in February - a still moderately hot 74.5°F (23.6°C). In March, the average low-temperature is 70.2°F (21.2°C).

Humidity

The least humid month in Key Largo is March, with an average relative humidity of 73%.

Rainfall

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.

Ocean temperature

In Key Largo, the average seawater temperature in March is 75.9°F (24.4°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.9°F (24.4°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In March, the average length of the day in Key Largo is 12h and 2min.
On the first day of March in Key Largo, sunrise is at 6:44 am and sunset at 6:23 pm EST. On the last day of the month, sunrise is at 7:14 am and sunset at 7:37 pm EDT.
Note: On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 5. 2023, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

The average sunshine in March in Key Largo is 8.7h.

UV index

In Key Largo, the average daily maximum UV index in March is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In March, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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?

In Key Largo, in March, the average high-temperature is 74.5°F (23.6°C), and 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 in Key Largo, Florida, with an average relative humidity of 73%.

What is the average humidity in March in Key Largo?

The average relative humidity in March is 73%.

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.

How much does it rain in Key Largo in March?

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

What is the ocean temperature in March in Key Largo?

In Key Largo, the average seawater temperature in March 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 day length in March in Key Largo is 12h and 2min.

What time are sunrise and sunset in March in Key Largo?

On the first day of March in Key Largo, sunrise is at 6:44 am and sunset at 6:23 pm EST. On the last day of the month, sunrise is at 7:14 am and sunset at 7:37 pm EDT.

When does Daylight Saving Time (DST) start in March in Key Largo?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. DST ends Sunday, November 5. 2023, at 2:00 am.

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

The average sunshine duration in March in Key Largo, Florida, is 8.7h.

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

In Key Largo, Florida, the average daily maximum UV index in March is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
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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"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 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%

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 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 and 2min

The month with the longest days is June (Average daylight: 13h and 40min).
The month with the shortest days is December (Average daylight: 10h and 37min).

  • Average sunshine in March: 8h and 42min

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 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

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 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

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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