May weather forecast
Saint Lucie, FL

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Weather in May

The last month of the spring, May, is also a moderately hot month in Saint Lucie, Florida, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 72.7°F (22.6°C).

Temperature

May's weather records an average high-temperature of a still warm 82.9°F (28.3°C), showing little deviation from April. Saint Lucie, during May nights, observes an average temperature of 72.7°F (22.6°C).

Heat index

Throughout May, the heat index is calculated to be a hot 89.6°F (32°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
Observations indicate that the heat index values are for shady locations with light wind. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In Saint Lucie, the average relative humidity in May is 75%.

Rainfall

In Saint Lucie, during May, the rain falls for 18.7 days and regularly aggregates up to 5.43" (138mm) of precipitation. In Saint Lucie, during the entire year, the rain falls for 221.2 days and collects up to 46.26" (1175mm) of precipitation.

Daylight

In May, the average length of the day in Saint Lucie is 13h and 31min.
On the first day of May, sunrise is at 6:41 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:12 pm EDT.

Sunshine

In May, the average sunshine in Saint Lucie is 10.5h.

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 risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 in May interprets into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is May in Saint Lucie?

In May, in Saint Lucie, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 72.7°F (22.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in May is calculated to be 89.6°F (32°C).

What is the average humidity in May in Saint Lucie?

In May, the average relative humidity is 75%.

How much does it rain in Saint Lucie in May?

In May, the rain falls for 18.7 days. Throughout May, 5.43" (138mm) of precipitation is accumulated.

How many hours of daylight does Saint Lucie have in May?

In May, the average day length in Saint Lucie is 13h and 31min.

When is the sunrise / sunset in May in Saint Lucie?

On the first day of May, sunrise is at 6:41 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 8:12 pm EDT.

How many hours of sunshine does Saint Lucie have in May?

In Saint Lucie, the average sunshine duration in May is 10.5h.

When is the highest UV index in Saint Lucie?

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 Saint Lucie?

In Saint Lucie, the average daily maximum UV index in May is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Saint Lucie, FL

Average temperature in May - Saint Lucie, FL
  • Average high temperature in May: 82.9°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (70.5°F).

  • Average low temperature in May: 72.7°F

The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (59.2°F).

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Average pressure in May
Saint Lucie, FL

Average pressure in May - Saint Lucie, FL
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

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Average wind speed in May
Saint Lucie, FL

Average wind speed in May - Saint Lucie, FL
  • Average wind speed in May: 8.6mph

The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity in May
Saint Lucie, FL

Average humidity in May - Saint Lucie, FL
  • Average humidity in May: 75%

The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is March (72%).

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Average rainfall in May
Saint Lucie, FL

Average rainfall in May - Saint Lucie, FL
  • Average rainfall in May: 5.43"

The wettest month (with the highest rainfall) is August (8.23").
The driest month (with the least rainfall) is February (1.26").

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Average rainfall days in May
Saint Lucie, FL

Average rainfall days in May - Saint Lucie, FL
  • Average rainfall days in May: 18.7 days

The month with the highest number of rainy days is August (28.1 days).
The month with the least rainy days is January (11.3 days).

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Average daylight in May /
Average sunshine in May
Saint Lucie, FL

Average daylight in May / Average sunshine in May - Saint Lucie, FL
  • Average daylight in May: 13h and 3min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in May: 10h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in May
Saint Lucie, FL

Average sunshine days in May - Saint Lucie, FL
  • Average sunshine days in May: 9.5 days

The month with the most sunshine days is January (17 days).
The month with the least sunshine days is August (0.8 days).

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Average UV index in May
Saint Lucie, FL

Average UV index in May - Saint Lucie, 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 months with the lowest UV index are January, February and December (UV index 5).

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Average cloud cover in May
Saint Lucie, FL

Average cloud cover in May - Saint Lucie, FL
  • Average cloud cover in May: 28

The months with the most cloud cover are November and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 28).

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Average visibility in May
Saint Lucie, FL

Average visibility in May - Saint Lucie, 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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Saint Lucie, Florida, USA

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