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

As Treasure Island welcomes May, the average high-temperature is noted at a still warm 82.2°F (27.9°C), closely aligning with the preceding month. In the month of May, the nighttime temperature dips to a steady average of 73°F (22.8°C).

Heat index

Throughout May, the heat index is calculated to be a tropical 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

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. In Treasure Island, during the entire year, the rain falls for 122.3 days and collects up to 9.45" (240mm) of precipitation.

Ocean temperature

In Treasure Island, in May, the average water temperature is 78.1°F (25.6°C).
Note: Surface water temperatures between 77°F (25°C) and 84.2°F (29°C) offer outstanding conditions for any water activity, providing extreme pleasure for extended periods.

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

The month with the most sunshine is May, with an average of 11.3h of sunshine.

UV index

The months with the highest UV index in Treasure Island are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard 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:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Attention! UV strength is notably upped by the reflection of sand and water.