May weather forecast
Deerfield Beach, FL

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The calm sea and white sand of the famous Deerfield Beach in Florida
The calm sea and white sand of the famous Deerfield Beach in Florida

Weather in May

May ushers in the beginning of Deerfield Beach, Florida's summer season with a meteoric rise in temperature and an average monthly rainfall of 5.71" (145mm). This month is earmarked by the increased UV index, signally the sun's heightened intensity. Warm ocean currents add to the city's unique beach city charm, attracting tourists in droves. Longer daylight hours make outdoor activities an inviting prospect. As May transitions into June, the weather further heats up in preparation for Florida's peak summer season.

Temperature

During May, the average high-temperature in Deerfield Beach is a still moderately hot 81.5°F (27.5°C), maintaining a close resemblance to that of the preceding month. Deerfield Beach marks an average drop to a still warm 75.9°F (24.4°C) during nighttime in May, following the high of the day.

Heat index

During May, the heat index is estimated at a tropical 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

In Deerfield Beach, the average relative humidity in May is 73%.

Rainfall

In May, the rain falls for 20.9 days. Throughout May, 5.71" (145mm) of precipitation is accumulated. In Deerfield Beach, Florida, during the entire year, the rain falls for 243.5 days and collects up to 53.31" (1354mm) of precipitation.

Ocean temperature

In Deerfield Beach, in May, the average water temperature is 80.8°F (27.1°C).
Note: 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.

Daylight

The average length of the day in May in Deerfield Beach 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, sunrise is at 6:27 am and sunset at 8:08 pm EDT.

Sunshine

In May, the average sunshine in Deerfield Beach is 10.6h.

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 radiation for average individuals.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Watch out! Sand and water enhance the UV exposure you receive.

Frequently asked questions

What is the usual temperature for Deerfield Beach in May?

The average high-temperature and low-temperature in Deerfield Beach during May are 81.5°F (27.5°C) and 75.9°F (24.4°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in May is estimated at 86°F (30°C).

What is the average humidity in May in Deerfield Beach?

In Deerfield Beach, the average relative humidity in May is 73%.

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

In May, the rain falls for 20.9 days. Throughout May, 5.71" (145mm) of precipitation is accumulated.

What is the water temperature in May in Deerfield Beach?

In Deerfield 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 Deerfield Beach have in May?

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

When is the sunrise / sunset in May in Deerfield Beach?

On the first day of May in Deerfield 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 Deerfield Beach have in May?

The average sunshine duration in May in Deerfield Beach, Florida, is 10.6h.

What are the months with the highest UV index in Deerfield Beach?

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

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

In Deerfield Beach, the average daily maximum UV index in May is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Deerfield Beach, FL

Average temperature in May - Deerfield Beach, FL
  • Average high temperature in May: 81.5°F

The warmest month (with the highest average high temperature) is August (87.1°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 (64.2°F).

Average pressure in May
Deerfield Beach, FL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).

Average wind speed in May
Deerfield Beach, FL

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

The windiest month (with the highest average wind speed) is March (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in May
Deerfield Beach, FL

Average humidity in May - Deerfield Beach, FL
  • Average humidity in May: 73%

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

Average rainfall in May
Deerfield Beach, FL

Average rainfall in May - Deerfield Beach, FL
  • Average rainfall in May: 5.71"

The wettest month (with the highest rainfall) is August (8.35").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in May
Deerfield Beach, FL

Average rainfall days in May - Deerfield Beach, FL
  • Average rainfall days in May: 20.9 days

The month with the highest number of rainy days is August (28 days).
The month with the least rainy days is February (13 days).

Average sea temperature in May
Deerfield Beach, FL

Average sea temperature in May - Deerfield 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).

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

Average daylight in May / Average sunshine in May - Deerfield Beach, FL
  • Average daylight in May: 13h and 2min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).

Average sunshine days in May
Deerfield Beach, FL

Average sunshine days in May - Deerfield Beach, FL
  • Average sunshine days in May: 7.8 days

The month with the most sunshine days is March (12.1 days).
The months with the least sunshine days are July and August (1.7 days).

Average UV index in May
Deerfield Beach, FL

Average UV index in May - Deerfield 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 month with the lowest UV index is January (UV index 5).

Average cloud cover in May
Deerfield Beach, FL

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

The month with the most cloud cover is October (Cloud cover 36).
The months with the least cloud cover are April and July (Cloud cover 28).

Average visibility in May
Deerfield Beach, FL

Average visibility in May - Deerfield 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).

Deerfield Beach, Florida, USA

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