May weather forecast
Myrtle Island, FL

The last month of the spring, May, is a hot month in Myrtle Island, Florida, with temperature in the range of an average low of 67.3°F (19.6°C) and an average high of 87.1°F (30.6°C).

Temperature

Myrtle Island's May reports an average high-temperature of a hot 87.1°F (30.6°C), exhibiting a minor difference from April. Myrtle Island's nighttime temperature in May falls to an average of 67.3°F (19.6°C).

Heat index

May's average heat index is calculated to be a sweltering 98.6°F (37°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Myrtle Island, the average relative humidity in May is 72%.

Rainfall

In May, the rain falls for 10.9 days. Throughout May, 1.46" (37mm) of precipitation is accumulated. In Myrtle Island, Florida, during the entire year, the rain falls for 151.1 days and collects up to 17.99" (457mm) of precipitation.

Daylight

In Myrtle Island, Florida, the average length of the day in May is 13h and 39min.
On the first day of the month, sunrise is at 6:42 am and sunset at 8:02 pm. On the last day of May, sunrise is at 6:26 am and sunset at 8:21 pm EDT.

Sunshine

In May, the average sunshine in Myrtle Island is 10.2h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a daily UV index of 7 turns into the following recommendations:
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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.