May weather forecast
Port Saint Lucie, FL

May in Port Saint Lucie heralds the advent of the summer season, distinguished by noteworthy elevations in temperature, daylight length, and humidity levels. The increased temperatures of up to 82.9°F (28.3°C) denote May as one of the warmest months so far. Likewise, sea temperatures experience a corresponding increase, inviting residents and tourists to enjoy various water-related activities. Observing an increase more than double the March figures, rainfall in this month marks the onset of the wet season. As June rolls in, the city's inhabitants should anticipate further increases in temperature and humidity.

Temperature

Port Saint Lucie, Florida, registers an average high-temperature of a still moderately hot 82.9°F (28.3°C) at the commencement of May, closely related to the preceding month. Port Saint Lucie usually reports an average low-temperature of 73.2°F (22.9°C) during the month of May.

Heat index

May's mean heat index is evaluated at a hot 89.6°F (32°C). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In May, the average relative humidity is 75%.

Rainfall

In Port Saint Lucie, in May, it is raining for 16.1 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 181.5 rainfall days, and 18.11" (460mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature is 79.7°F (26.5°C).
Note: Swimming, diving, and other water activities in the temperature range of 77°F (25°C) to 84.2°F (29°C) are perceived as very enjoyable and comfortable for prolonged durations.

Daylight

The average length of the day in May in Port Saint Lucie is 13h and 30min.
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 8:11 pm EDT.

Sunshine

In Port Saint Lucie, the average sunshine in May is 10.7h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Saint Lucie. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 7 suggests these recommendations:
Deflect overexposure. Sun protection is a necessity. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be wary! Reflections from sand and water make UV radiation more intense.