May weather forecast
Treasure Island, FL

The heart of the Florida summer sets in May with temperatures reading from 73°F (22.8°C) to 82.2°F (27.9°C). Compared to April, the sunlight lasts longer at 13.5 daylight hours, making it the perfect month for sunbathers at the Treasure Island beach. Consequentially, the sea turns into a joyful swimmer's paradise, warming to enticing degrees. Winds might not provide much respite from the heat, with the speed falling to 8.6mph (13.8km/h). Rainfall takes a spike too, seeing precipitation for a mean of 8.3 days in the month.

Temperature

May's climate in Treasure Island shows a minor adjustment in average high-temperatures to a still warm 82.2°F (27.9°C) from April's 77.7°F (25.4°C). In the month of May, Treasure Island witnesses a consistent average low-temperature of 73°F (22.8°C).

Heat index

During May, the heat index is calculated to be a tropical 87.8°F (31°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly critical for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

In May, the average relative humidity is 73%.

Rainfall

In Treasure Island, in May, during 8.3 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, in Treasure Island, there are 122.3 rainfall days, and 9.45" (240mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature is 78.1°F (25.6°C).
Note: For swimming, diving, and various water activities, the temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

In Treasure Island, the average length of the day in May is 13h and 32min.
On the first day of the month, sunrise is at 6:50 am and sunset at 8:05 pm. On the last day of May, sunrise is at 6:35 am and sunset at 8:22 pm EDT.

Sunshine

With an average of 11.3h of sunshine, May has the most sunshine of the year in Treasure Island.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Treasure Island, Florida. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the maximum UV index of 7 suggests this advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take heed! Reflections of sand and water make the Sun's UV rays stronger.