May weather forecast and climate
Boca Raton, FL

The Atlantic ocean surrounding the fantastic city of Boca Raton, Florida
The Atlantic ocean surrounding the fantastic city of Boca Raton, Florida
May, the last month of the spring, in Boca Raton, is another warm month, with average temperature fluctuating between 81.5°F (27.5°C) and 75.9°F (24.4°C).

Temperature

In Boca Raton, the average high-temperature is practically the same as in April - a still moderately hot 81.5°F (27.5°C). In May, in Boca Raton, the average low-temperature is 75.9°F (24.4°C).

Heat index

In May, the average heat index is evaluated at a tropical 86.4°F (30.2°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. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, pregnancy, clothing). 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. 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 is 74%.

Rainfall

In Boca Raton, it is raining for 21 days, with typically 7.05" (179mm) of accumulated precipitation. Throughout the year, in Boca Raton, there are 244.6 rainfall days, and 68.54" (1741mm) of precipitation is accumulated.

Ocean temperature

In Boca Raton, the average water temperature is 80.8°F (27.1°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Boca Raton, Florida, the average length of the day in May is 13.5h.

Sunshine

The average sunshine in May is 10.5h.

UV index

Months with the highest UV index in Boca Raton are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health 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 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in May in Boca Raton?

The average high-temperature, in May, is 81.5°F (27.5°C), while the average low-temperature is 75.9°F (24.4°C). In May, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is estimated at 86.4°F (30.2°C).

What is the average humidity in May in Boca Raton?

In May, the average relative humidity is 74%.

How much does it rain in Boca Raton in May?

In Boca Raton, during May, the rain falls for 21 days and regularly aggregates up to 7.05" (179mm) of precipitation.

What is the water temperature in May in Boca Raton?

In May, the average ocean 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 Boca Raton have in May?

In May, the average length of the day is 13.5h.

How long on average sun shines in May in Boca Raton?

The average sunshine in May in Boca Raton, Florida, is 10.5h.

What is the month with the highest UV index in Boca Raton?

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

How high is the UV index in May in Boca Raton?

In Boca Raton, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in May - Boca Raton, 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 - Boca Raton, FL
  • Average pressure in May: 30.01"

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

Average wind speed in May - Boca Raton, 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 - Boca Raton, FL
  • Average humidity in May: 74%

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 - Boca Raton, FL
  • Average rainfall in May: 7.05"

The wettest month (with the highest rainfall) is August (12.05").
The driest month (with the least rainfall) is January (1.57").

Average rainfall days in May - Boca Raton, FL
  • Average rainfall days in May: 21 days

The month with the highest number of rainy days is August (29.3 days).
The month with the least rainy days is February (12.7 days).

Average sea temperature in May - Boca Raton, 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 - Boca Raton, 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: 10.5h

The month with the most sunshine is July (Average sunshine: 10.9h).
Months with the least sunshine are January and December (Average sunshine: 6.2).

Average sunshine days in May - Boca Raton, FL
  • Average sunshine days in May: 8.7 days

The month with the most sunshine days is March (13.3 days).
The month with the least sunshine days is August (0.9 days).

Average UV index in May - Boca Raton, FL
  • Average UV index in May: 7

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 - Boca Raton, FL
  • Average cloud cover in May: 29

The month with the most cloud cover is October (Cloud cover 36).
Months with the least cloud cover are March, April, May and July (Cloud cover 29).

Average visibility in May - Boca Raton, 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).