Key Largo
Florida, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Key Largo, FL

A bright seascape and cloudy evening sky in Key Largo, Florida
A bright seascape and cloudy evening sky in Key Largo, Florida
Marzo, the first month of the spring, in Key Largo, is also a moderately hot month, with average temperature ranging between max 80.6°F (27°C) and min 60.8°F (16°C).

Temperature

In Marzo, the average high-temperature is almost the same as in Febrero - a still moderately hot 80.6°F (27°C). In Key Largo, Florida, the average low-temperature is 60.8°F (16°C).

Rainfall

In Key Largo, during Marzo, the rain falls for 6 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, in Key Largo, there are 126 rainfall days, and 56.65" (1439mm) of precipitation is accumulated.

Ocean temperature

In Key Largo, the average seawater temperature is 74.7°F (23.7°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 74.7°F (23.7°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In Key Largo, the average length of the day in Marzo is 12h.

Sunshine

In Marzo, the average sunshine is 9h.

UV index

The average daily maximum UV index in Marzo is 10. A UV Index estimate of 8 to 10 represents a very high threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 10 transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in Marzo in Key Largo?

The average high-temperature, in Marzo, in Key Largo, Florida, is 80.6°F (27°C), while the average low-temperature is 60.8°F (16°C).

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

In Key Largo, Florida, during Marzo, the rain falls for 6 days and regularly aggregates up to 2.24" (57mm) of precipitation.

What is the ocean temperature in Marzo in Key Largo?

In Marzo, the average ocean temperature is 74.7°F (23.7°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 74.7°F (23.7°C).

How many hours of daylight does Key Largo have in Marzo?

In Marzo, the average length of the day in Key Largo, Florida, is 12h.

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

In Key Largo, the average sunshine in Marzo is 9h.

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

In Marzo, the average daily maximum UV index is 10. A UV Index estimate of 8 to 10 represents a very high health risk from the exposure to the Sun's UV radiation.
Average temperature in March - Key Largo, FL
  • Average high temperature in March: 81°F

Warmest months (with the highest average high temperature) are July, August and September (90°F).
The month with the lowest average high temperature is January (75°F).

  • Average low temperature in March: 61°F

Months with the highest average low temperature are July, August and September (73°F).
Coldest months (with the lowest average low temperature) are January and February (57°F).

Average rainfall in March - Key Largo, FL
  • Average rainfall in March: 2.2"

The wettest month (with the highest rainfall) is June (10").
The driest month (with the lowest rainfall) is December (1.4").

Average rainfall days in March - Key Largo, FL
  • Average rainfall days in March: 6 days

Months with the highest number of rainy days are August and September (17 days).
The month with the lowest number of rainy days is April (5 days).

Average sea temperature in March - Key Largo, FL
  • Average sea temperature in March: 74.6°F

The best month for swimming (with the highest average sea temperature) is August (86.8°F).
The coldest month (with the lowest average sea temperature) is February (72.6°F).

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 shortest days is December (Average daylight: 10.6h).

  • Average sunshine in March: 9h

Months with most sunshine are April, May, June and July (Average sunshine: 10h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in March - Key Largo, FL
  • Average UV index in March: 10

Months with the highest UV index are April, May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 5).