May weather forecast
Jacksonville Beach, FL

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A long pier on the scenic blue water and white sand Jacksonville Beach in Florida, with a vast view of the long Atlantic coast
A long pier on the scenic blue water and white sand Jacksonville Beach in Florida, with a vast view of the long Atlantic coast

Weather in May

The last month of the spring, May, is another warm month in Jacksonville Beach, Florida, with temperature in the range of an average low of 69.6°F (20.9°C) and an average high of 83.1°F (28.4°C).

Temperature

May showcases a minor temperature ascent, adjusting from April's warm 77.5°F (25.3°C) to a still moderately hot 83.1°F (28.4°C). In Jacksonville Beach, May nights witness a steady temperature drop to a pleasant 69.6°F (20.9°C).

Heat index

Throughout May, the heat index is estimated at a tropical 89.6°F (32°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

In Jacksonville Beach, the average relative humidity in May is 72%.

Rainfall

In Jacksonville Beach, during May, the rain falls for 13.9 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Jacksonville Beach, during the entire year, the rain falls for 185.5 days and collects up to 31.54" (801mm) of precipitation.

Snowfall

February through November are months without snowfall.

Ocean temperature

In May, the average ocean temperature is 74.8°F (23.8°C).
Note: For someone sensitive to cold, swimming in 74.8°F (23.8°C) waters can be invigorating, especially when considering elements like sunshine, wind, and current air temperature. (As a reference, Olympic swimming waters are kept between 77°F (25°C) and 82.4°F (28°C).)

Daylight

The average length of the day in May in Jacksonville Beach, Florida, is 13h and 41min.
On the first day of the month, sunrise is at 6:41 am and sunset at 8:03 pm. On the last day of May, in Jacksonville Beach, sunrise is at 6:24 am and sunset at 8:22 pm EDT.

Sunshine

In May, the average sunshine in Jacksonville Beach is 10.7h.

UV index

The months with the highest UV index in Jacksonville Beach are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 7 during May leads to these instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be on guard! The reflective nature of sand and water boosts UV exposure.
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Frequently asked questions

How hot does it get in Jacksonville Beach in May?

The average high-temperature, in May, in Jacksonville Beach, is 83.1°F (28.4°C), while the average low-temperature is 69.6°F (20.9°C). In May, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in May in Jacksonville Beach?

The average relative humidity in May is 72%.

How much does it rain in Jacksonville Beach in May?

In Jacksonville Beach, during May, the rain falls for 13.9 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Jacksonville Beach?

February through November are months without snowfall in Jacksonville Beach.

What is the water temperature in May in Jacksonville Beach?

In May, the average ocean temperature in Jacksonville Beach, Florida, is 74.8°F (23.8°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 74.8°F (23.8°C).

What is the average length of the day in May in Jacksonville Beach?

The average day length in May is 13h and 41min.

What time are sunrise and sunset in May in Jacksonville Beach?

On the first day of May in Jacksonville Beach, sunrise is at 6:41 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:22 pm EDT.

How many hours of sunshine does Jacksonville Beach have in May?

In Jacksonville Beach, Florida, the average sunshine duration in May is 10.7h.

What is the month with the highest UV index in Jacksonville Beach?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

How high is the UV index in May in Jacksonville Beach?

The average daily maximum UV index in May in Jacksonville Beach is 7. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Jacksonville Beach, FL

Average temperature in May - Jacksonville Beach, FL
  • Average high temperature in May: 83.1°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (63.3°F).

  • Average low temperature in May: 69.6°F

The months with the highest average low temperature are July and August (77.5°F).
The coldest month (with the lowest average low temperature) is January (50.4°F).

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Average pressure in May
Jacksonville Beach, FL

Average pressure in May - Jacksonville Beach, FL
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are August and September (29.98"Hg).

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Average wind speed in May
Jacksonville Beach, FL

Average wind speed in May - Jacksonville Beach, FL
  • Average wind speed in May: 7.7mph

The windiest months (with the highest average wind speed) are January, March, April, October and November (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in May
Jacksonville Beach, FL

Average humidity in May - Jacksonville Beach, FL
  • Average humidity in May: 72%

The months with the highest relative humidity are August and December (76%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in May
Jacksonville Beach, FL

Average rainfall in May - Jacksonville Beach, FL
  • Average rainfall in May: 2.68"

The wettest month (with the highest rainfall) is August (4.8").
The driest month (with the least rainfall) is January (1.3").

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Average rainfall days in May
Jacksonville Beach, FL

Average rainfall days in May - Jacksonville Beach, FL
  • Average rainfall days in May: 13.9 days

The month with the highest number of rainy days is August (25.3 days).
The month with the least rainy days is February (9.8 days).

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Average snowfall days in May
Jacksonville Beach, FL

Average snowfall days in May - Jacksonville Beach, FL
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in May
Jacksonville Beach, FL

Average sea temperature in May - Jacksonville Beach, FL
  • Average sea temperature in May: 74.9°F

The best month for swimming (with the highest average sea temperature) is August (83.2°F).
The coldest months (with the lowest average sea temperature) are January and February (60.7°F).

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Average daylight in May /
Average sunshine in May
Jacksonville Beach, FL

Average daylight in May / Average sunshine in May - Jacksonville Beach, FL
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

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Average sunshine days in May
Jacksonville Beach, FL

Average sunshine days in May - Jacksonville Beach, FL
  • Average sunshine days in May: 14.6 days

The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (4.2 days).

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Average UV index in May
Jacksonville Beach, FL

Average UV index in May - Jacksonville Beach, FL
  • Average UV index in May: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in May
Jacksonville Beach, FL

Average cloud cover in May - Jacksonville Beach, FL
  • Average cloud cover in May: 26

The month with the most cloud cover is December (Cloud cover 38).
The month with the least cloud cover is May (Cloud cover 26).

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Average visibility in May
Jacksonville Beach, FL

Average visibility in May - Jacksonville Beach, FL
  • Average visibility in May: 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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Jacksonville Beach, Florida, USA

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