May weather forecastFort Pierce, FL
May
Weather in May
The last month of the spring, May, is another warm month in Fort Pierce, Florida, with an average temperature ranging between max 82.9°F (28.3°C) and min 72.7°F (22.6°C).Temperature
The average high-temperature during May registers at a still warm 82.9°F (28.3°C), closely corresponding to the preceding month. Fort Pierce experiences a nighttime temperature average of 72.7°F (22.6°C) during May.Heat index
In May, the average heat index is appraised at a tropical 89.6°F (32°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
In May, the average relative humidity is 75%.Rainfall
In May, the rain falls for 18.7 days. Throughout May, 5.43" (138mm) of precipitation is accumulated. In Fort Pierce, during the entire year, the rain falls for 221.2 days and collects up to 46.26" (1175mm) of precipitation.Ocean temperature
In Fort Pierce, the average seawater temperature in May is 79.7°F (26.5°C).Note: Surface water temperatures falling between 77°F (25°C) and 84.2°F (29°C) are regarded as prime and extremely agreeable for enduring periods during any water activity.
Daylight
The average length of the day in May is 13h and 31min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:55 pm. On the last day of May, in Fort Pierce, sunrise is at 6:26 am and sunset at 8:11 pm EDT.
Sunshine
In May, the average sunshine is 10.5h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 7 during May leads to these instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Pierce, 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).
Average pressure in May
Fort Pierce, 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).
Average wind speed in May
Fort Pierce, 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).
Average humidity in May
Fort Pierce, 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%).
Average rainfall in May
Fort Pierce, 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").
Average rainfall days in May
Fort Pierce, 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).
Average sea temperature in May
Fort Pierce, FL
- Average sea temperature in May: 79.6°F
The best month for swimming (with the highest average sea temperature) is August (85.1°F).
The coldest month (with the lowest average sea temperature) is February (73.3°F).
Average daylight in May /
Average sunshine in May
Fort Pierce, FL
- Average daylight in May: 13h and 30min
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 24min).
- Average sunshine in May: 10h and 30min
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).
Average sunshine days in May
Fort Pierce, 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).
Average UV index in May
Fort Pierce, 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).
Average cloud cover in May
Fort Pierce, 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).
Average visibility in May
Fort Pierce, 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).





