May weather forecast
Boynton Beach, FL

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Weather in May

May, the last month of the spring in Boynton Beach, is also a moderately hot month, with an average temperature fluctuating between 75.7°F (24.3°C) and 81.3°F (27.4°C).

Temperature

The advent of May observes an average high-temperature of a still warm 81.3°F (27.4°C), nearly identical to April's 79.2°F (26.2°C). In Boynton Beach, the nighttime temperature shows a slight difference from the daytime high, averaging to a still warm 75.7°F (24.3°C) during May.

Heat index

The average heat index in May is evaluated at a hot 86°F (30°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

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

Rainfall

In Boynton Beach, during May, the rain falls for 20.2 days and regularly aggregates up to 5.67" (144mm) of precipitation. Throughout the year, in Boynton Beach, there are 238.3 rainfall days, and 54.53" (1385mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature in Boynton Beach is 80.2°F (26.8°C).
Note: Water surface temperatures from 77°F (25°C) to 84.2°F (29°C) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in May in Boynton Beach, Florida, is 13h and 28min.
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 6:27 am and sunset at 8:09 pm EDT.

Sunshine

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

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Boynton Beach. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 7 in May suggests the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Experience reduced UV exposure by about half when donning a wide-brim hat. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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Frequently asked questions

What is the usual temperature for Boynton Beach in May?

During May, Boynton Beach experiences an average high-temperature of 81.3°F (27.4°C) and a low-temperature of 75.7°F (24.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in May is evaluated at 86°F (30°C).

What is the average humidity in May in Boynton Beach?

The average relative humidity in May in Boynton Beach is 74%.

How much does it rain in Boynton Beach in May?

In Boynton Beach, in May, during 20.2 rainfall days, 5.67" (144mm) of precipitation is typically accumulated.

How warm is the water in May in Boynton Beach?

In Boynton Beach, Florida, the average seawater temperature in May is 80.2°F (26.8°C). 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.

What is the average length of the day in May in Boynton Beach?

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

When are sunrise and sunset in May in Boynton Beach?

On the first day of May in Boynton Beach, sunrise is at 6:41 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 8:09 pm EDT.

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

The average sunshine duration in May in Boynton Beach is 10.4h.

When is the highest UV index in Boynton Beach?

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

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

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

Average temperature in May
Boynton Beach, FL

Average temperature in May - Boynton 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).

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Average pressure in May
Boynton Beach, FL

Average pressure in May - Boynton 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
Boynton Beach, FL

Average wind speed in May - Boynton 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).

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Average humidity in May
Boynton Beach, FL

Average humidity in May - Boynton 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%).

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Average rainfall in May
Boynton Beach, FL

Average rainfall in May - Boynton 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").

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Average rainfall days in May
Boynton Beach, FL

Average rainfall days in May - Boynton 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).

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Average sea temperature in May
Boynton Beach, FL

Average sea temperature in May - Boynton 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
Boynton Beach, FL

Average daylight in May / Average sunshine in May - Boynton 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).

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Average sunshine days in May
Boynton Beach, FL

Average sunshine days in May - Boynton 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).

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Average UV index in May
Boynton Beach, FL

Average UV index in May - Boynton 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).

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Average cloud cover in May
Boynton Beach, FL

Average cloud cover in May - Boynton 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).

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Average visibility in May
Boynton Beach, FL

Average visibility in May - Boynton 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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Boynton Beach, Florida, USA

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