March weather forecast and climate
Duck Key, FL

The first month of the spring, March, is also a moderately hot month in Duck Key, Florida, with temperature in the range of an average low of 70.5°F (21.4°C) and an average high of 74.3°F (23.5°C).

Temperature

In Duck Key, the average high-temperature is relatively the same as in February - a still warm 74.3°F (23.5°C). In March, the average low-temperature is 70.5°F (21.4°C).

Humidity

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

Rainfall

March is the month with the least rainfall in Duck Key. Rain falls for 10.8 days and accumulates 0.43" (11mm) of precipitation.

Ocean temperature

In Duck Key, the average seawater temperature in March is 75.6°F (24.2°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.6°F (24.2°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

The average length of the day in Duck Key is 12h.

Sunshine

In March, the average sunshine is 8.9h.

UV index

In March, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in March transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in March in Duck Key?

In March, the average high-temperature is 74.3°F (23.5°C), and the average low-temperature is 70.5°F (21.4°C).

What is the least humid month in Duck Key?

With an average relative humidity of 73%, March is the least humid month in Duck Key.

What is the average humidity in March in Duck Key?

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

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

In March, the rain falls for 10.8 days. Throughout March, 0.43" (11mm) of precipitation is accumulated.

What is the driest month in Duck Key?

The month with the least rainfall in Duck Key, Florida, is March when the rain falls for 10.8 days and typically collects 0.43" (11mm) of precipitation.

How warm is the water in March in Duck Key?

In Duck Key, Florida, in March, the average water temperature is 75.6°F (24.2°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.6°F (24.2°C) water may be enjoyable.

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

The average length of the day in March is 12h.

How many hours of sunshine does Duck Key have in March?

In March, the average sunshine is 8.9h.

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

In March, the average daily maximum UV index in Duck Key, Florida, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in March - Duck Key, FL
  • Average high temperature in March: 74.3°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 (72.9°F).

  • Average low temperature in March: 70.5°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 (67.5°F).

Average pressure in March - Duck Key, FL
  • Average pressure in March: 30.07"

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

Average wind speed in March - Duck Key, FL
  • Average wind speed in March: 13.3mph

The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (9mph).

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

Months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is March (73%).

Average rainfall in March - Duck Key, FL
  • Average rainfall in March: 0.43"

The wettest month (with the highest rainfall) is September (4.21").
The driest month (with the least rainfall) is March (0.43").

Average rainfall days in March - Duck Key, FL
  • Average rainfall days in March: 10.8 days

The month with the highest number of rainy days is September (23 days).
The month with the least rainy days is February (10.3 days).

Average sea temperature in March - Duck Key, FL
  • Average sea temperature in March: 75.6°F

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest months (with the lowest average sea temperature) are January and February (73.9°F).

Average daylight in March / Average sunshine in March - Duck Key, 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: 8.9h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.6h).

Average sunshine days in March - Duck Key, FL
  • Average sunshine days in March: 18 days

The month with the most sunshine days is March (18 days).
The month with the least sunshine days is September (4.6 days).

Average UV index in March - Duck Key, 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).

Average cloud cover in March - Duck Key, FL
  • Average cloud cover in March: 25

Months with the most cloud cover are January and October (Cloud cover 32).
The month with the least cloud cover is April (Cloud cover 23).

Average visibility in March - Duck Key, 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).