May weather forecast and climate
West Palm Beach, FL

Tall, beautiful buildings reflected in the waterway in West Palm Beach, Florida
Tall, beautiful buildings reflected in the waterway in West Palm Beach, Florida

Weather in May

The last month of the spring, May, is another warm month in West Palm Beach, Florida, with average temperature ranging between max 81°F (27.2°C) and min 75.7°F (24.3°C).

Temperature

In West Palm Beach, the average high-temperature is essentially the same as in April - a still warm 81°F (27.2°C). In May, the average low-temperature is 75.7°F (24.3°C).

Heat index

In May, the average heat index is evaluated at 85.5°F (29.7°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 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, clothing). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In May, the average relative humidity in West Palm Beach is 75%.

Rainfall

In May, in West Palm Beach, the rain falls for 14.8 days. Throughout May, 2.24" (57mm) of precipitation is accumulated. In West Palm Beach, during the entire year, the rain falls for 193.9 days and collects up to 22.56" (573mm) of precipitation.

Ocean temperature

In West Palm Beach, the average seawater temperature in May is 80.2°F (26.8°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

The average length of the day in West Palm Beach is 13.5h.

Sunshine

In May, the average sunshine is 10.6h.

UV index

Months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in May in West Palm Beach?

In West Palm Beach, in May, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 75.7°F (24.3°C). In May, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 85.5°F (29.7°C).

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

In West Palm Beach, the average relative humidity in May is 75%.

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

In May, in West Palm Beach, Florida, the rain falls for 14.8 days. Throughout May, 2.24" (57mm) of precipitation is accumulated.

How warm is the water in May in West Palm Beach?

In West Palm Beach, the average seawater temperature in May is 80.2°F (26.8°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 West Palm Beach have in May?

In May, the average length of the day in West Palm Beach is 13.5h.

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

The average sunshine in May is 10.6h.

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

Months with the highest UV index in West Palm Beach are May through September, with an average maximum UV index of 7.

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

In May, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in May
West Palm Beach, FL

Average temperature in May - West Palm Beach, FL
  • Average high temperature in May: 81°F

The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is January (72°F).

  • Average low temperature in May: 75.7°F

The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).

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Average pressure in May
West Palm Beach, FL

Average pressure in May - West Palm Beach, FL
  • Average pressure in May: 30.02"

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

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Average wind speed in May
West Palm Beach, FL

Average wind speed in May - West Palm Beach, FL
  • Average wind speed in May: 10.5mph

The windiest month (with the highest average wind speed) is March (11.8mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in May
West Palm Beach, FL

Average humidity in May - West Palm Beach, FL
  • Average humidity in May: 75%

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

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Average rainfall in May
West Palm Beach, FL

Average rainfall in May - West Palm Beach, FL
  • Average rainfall in May: 2.24"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in May
West Palm Beach, FL

Average rainfall days in May - West Palm Beach, FL
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is September (25 days).
The month with the least rainy days is February (9.3 days).

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Average sea temperature in May
West Palm Beach, FL

Average sea temperature in May - West 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).

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

Average daylight in May / Average sunshine in May - West Palm Beach, FL
  • Average daylight in May: 13.5h

The month with the longest days is June (Average daylight: 13.8h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in May: 10.6h

The month with the most sunshine is July (Average sunshine: 11h).
Months with the least sunshine are January and December (Average sunshine: 6.1).

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Average sunshine days in May
West Palm Beach, FL

Average sunshine days in May - West Palm Beach, FL
  • Average sunshine days in May: 12.7 days

The month with the most sunshine days is January (18.2 days).
The month with the least sunshine days is August (3.5 days).

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Average UV index in May
West Palm Beach, FL

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

Months with the highest UV index are May, June, July, August and September (UV index 7).
Months with the lowest UV index are January and February (UV index 5).

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Average cloud cover in May
West Palm Beach, FL

Average cloud cover in May - West Palm Beach, FL
  • Average cloud cover in May: 28

Months with the most cloud cover are January, November and December (Cloud cover 35).
Months with the least cloud cover are May, July and August (Cloud cover 28).

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Average visibility in May
West Palm Beach, FL

Average visibility in May - West Palm Beach, FL
  • Average visibility in May: 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).

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