May weather forecast
South Palm Beach, FL

Share

Weather in May

May, the last month of the spring in South Palm Beach, is another warm month, with an average temperature ranging between min 75.7°F (24.3°C) and max 81.3°F (27.4°C).

Temperature

In May, South Palm Beach experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 79.2°F (26.2°C) in April to a still moderately hot 81.3°F (27.4°C). South Palm Beach, during the May nights, maintains an average temperature of 75.7°F (24.3°C), closely aligned with its daytime readings.

Heat index

May's average heat index is calculated to be a tropical 86°F (30°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in May is 74%.

Rainfall

In South Palm Beach, in May, it is raining for 20.2 days, with typically 5.67" (144mm) of accumulated precipitation. In South Palm Beach, during the entire year, the rain falls for 238.3 days and collects up to 54.53" (1385mm) of precipitation.

Ocean temperature

In South Palm Beach, the average seawater temperature in May is 80.2°F (26.8°C).
Note: For any water activity, temperatures between 77°F (25°C) and 84.2°F (29°C) are deemed excellent and extremely satisfying for enduring periods.

Daylight

The average length of the day in May is 13h and 28min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:52 pm. On the last day of May, sunrise is at 6:26 am and sunset at 8:08 pm EDT.

Sunshine

In South Palm Beach, the average sunshine in May is 10.4h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 7 during May translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take note! Sand and water reflections strengthen the Sun's UV exposure.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May in South Palm Beach?

The average high-temperature, in May, in South Palm Beach, is 81.3°F (27.4°C), while the average low-temperature is 75.7°F (24.3°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in May is calculated to be 86°F (30°C).

What is the average humidity in May in South Palm Beach?

In May, the average relative humidity in South Palm Beach is 74%.

How many days does it rain in May in South Palm Beach?

In South Palm Beach, in May, it is raining for 20.2 days, with typically 5.67" (144mm) of accumulated precipitation.

What is the water temperature in May in South Palm Beach?

In May, the average ocean temperature in South Palm Beach, Florida, is 80.2°F (26.8°C). 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.

What is the average length of the day in May in South Palm Beach?

In May, the average day length in South Palm Beach is 13h and 28min.

When are sunrise and sunset in May in South Palm Beach?

On the first day of May, sunrise is at 6:41 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:08 pm EDT.

How long on average sun shines in May in South Palm Beach?

The average sunshine duration in May in South Palm Beach is 10.4h.

What are the months with the highest UV index in South Palm Beach?

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

What is the UV index intensity in May in South Palm Beach?

In May, the average daily maximum UV index in South Palm Beach, Florida, is 7. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Average temperature in May
South Palm Beach, FL

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

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in May: 75.7°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).

Average pressure in May
South Palm Beach, FL

Average pressure in May - South Palm 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).

Average wind speed in May
South Palm Beach, FL

Average wind speed in May - South Palm 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 (7.7mph).

Average humidity in May
South Palm Beach, FL

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

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

Average rainfall in May
South Palm Beach, FL

Average rainfall in May - South Palm Beach, FL
  • Average rainfall in May: 5.67"

The wettest month (with the highest rainfall) is August (9.06").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in May
South Palm Beach, FL

Average rainfall days in May - South Palm Beach, FL
  • Average rainfall days in May: 20.2 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (13.3 days).

Average sea temperature in May
South Palm Beach, FL

Average sea temperature in May - South Palm Beach, FL
  • Average sea temperature in May: 80.2°F

The best month for swimming (with the highest average sea temperature) is August (85.7°F).
The coldest month (with the lowest average sea temperature) is January (74.1°F).

Average daylight in May /
Average sunshine in May
South Palm Beach, FL

Average daylight in May / Average sunshine in May - South Palm Beach, FL
  • Average daylight in May: 13h and 3min

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 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 6h and 0min).

Average sunshine days in May
South Palm Beach, FL

Average sunshine days in May - South Palm Beach, FL
  • Average sunshine days in May: 8.7 days

The month with the most sunshine days is March (12.7 days).
The month with the least sunshine days is July (2.3 days).

Average UV index in May
South Palm Beach, FL

Average UV index in May - South Palm 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
South Palm Beach, FL

Average cloud cover in May - South Palm Beach, FL
  • Average cloud cover in May: 30

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 and July (Cloud cover 29).

Average visibility in May
South Palm Beach, FL

Average visibility in May - South Palm 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).

South Palm Beach, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location