May weather forecast
Delray Beach, FL

The strip of Delray Beach in Florida and the vast neon-lit city front
The strip of Delray Beach in Florida and the vast neon-lit city front

Weather in May

The last month of the spring, May, is another warm month in Delray Beach, Florida, with an average temperature fluctuating between 81.3°F (27.4°C) and 75.9°F (24.4°C).

Temperature

In Delray Beach, Florida, the average high-temperature in May is relatively the same as in April - a still warm 81.3°F (27.4°C). In May, in Delray Beach, the average low-temperature is 75.9°F (24.4°C).

Heat index

The average heat index in May is estimated at 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, pregnancy, metabolic differences), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in May is 74%.

Rainfall

In May, the rain falls for 19 days. Throughout May, 4.33" (110mm) of precipitation is accumulated. In Delray Beach, during the entire year, the rain falls for 229 days and collects up to 46.46" (1180mm) of precipitation.

Ocean temperature

In Delray Beach, the average water temperature is 80.8°F (27.1°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Delray Beach, the average length of the day in May is 13h and 27min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:52 pm. On the last day of May, in Delray Beach, sunrise is at 6:27 am and sunset at 8:08 pm EDT.

Sunshine

The average sunshine in May in Delray Beach is 10.5h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
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. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Delray Beach?

The average high-temperature, in May, in Delray Beach, is 81.3°F (27.4°C), while the average low-temperature is 75.9°F (24.4°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in May is estimated at 86°F (30°C).

What is the average humidity in May in Delray Beach?

In May, the average relative humidity is 74%.

How many days does it rain in May in Delray Beach?

In Delray Beach, during May, the rain falls for 19 days and regularly aggregates up to 4.33" (110mm) of precipitation.

How warm is the water in May in Delray Beach?

In Delray Beach, Florida, in May, the average water temperature is 80.8°F (27.1°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Delray Beach have in May?

In May, the average day length in Delray Beach, Florida, is 13h and 27min.

When are sunrise and sunset in May in Delray Beach?

On the first day of May in Delray Beach, Florida, sunrise is at 6:42 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 8:08 pm EDT.

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

The average sunshine duration in May in Delray Beach is 10.5h.

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

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

What is the UV index intensity in May in Delray Beach?

In Delray Beach, Florida, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Average temperature in May
Delray Beach, FL

Average temperature in May - Delray Beach, FL
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in May: 75.9°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

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Average pressure in May
Delray Beach, FL

Average pressure in May - Delray Beach, FL
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).

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Average wind speed in May
Delray Beach, FL

Average wind speed in May - Delray Beach, FL
  • Average wind speed in May: 10.3mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in May
Delray Beach, FL

Average humidity in May - Delray Beach, FL
  • Average humidity in May: 74%

The months with the highest relative humidity are June, September and December (75%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in May
Delray Beach, FL

Average rainfall in May - Delray Beach, FL
  • Average rainfall in May: 4.33"

The wettest month (with the highest rainfall) is August (8.03").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in May
Delray Beach, FL

Average rainfall days in May - Delray Beach, FL
  • Average rainfall days in May: 19 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (12.6 days).

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Average sea temperature in May
Delray Beach, FL

Average sea temperature in May - Delray Beach, FL
  • Average sea temperature in May: 80.8°F

The best month for swimming (with the highest average sea temperature) is August (86.3°F).
The coldest months (with the lowest average sea temperature) are January and February (74.2°F).

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

Average daylight in May / Average sunshine in May - Delray Beach, FL
  • Average daylight in May: 13h and 27min

The month with the longest days is June (Average daylight: 13h and 46min).
The month with the shortest days is December (Average daylight: 10h and 31min).

  • Average sunshine in May: 10h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 6min).

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Average sunshine days in May
Delray Beach, FL

Average sunshine days in May - Delray Beach, FL
  • Average sunshine days in May: 9.7 days

The month with the most sunshine days is March (14.2 days).
The month with the least sunshine days is September (2.5 days).

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Average UV index in May
Delray Beach, FL

Average UV index in May - Delray 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 February (UV index 5).

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Average cloud cover in May
Delray Beach, FL

Average cloud cover in May - Delray Beach, FL
  • Average cloud cover in May: 29

The months with the most cloud cover are January, October, November and December (Cloud cover 36).
The months with the least cloud cover are April, May and July (Cloud cover 29).

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Average visibility in May
Delray Beach, FL

Average visibility in May - Delray 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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