May weather forecast
Myrtle Island, FL

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

Temperature

In May, Myrtle Island's weather conditions record an average high-temperature of a hot 87.1°F (30.6°C), demonstrating little divergence from the preceding month. Myrtle Island experiences an average low-temperature of 67.3°F (19.6°C) in month of May.

Heat index

In May, the average heat index is estimated at a fiery hot 98.6°F (37°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

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

Rainfall

In Myrtle Island, during May, the rain falls for 10.9 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 151.1 rainfall days, and 17.99" (457mm) of precipitation is accumulated.

Daylight

In Myrtle Island, 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

The average sunshine in May is 10.2h.

UV index

The months with the highest UV index in Myrtle Island are May through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: During May, 7 as the daily maximum UV index converts into the following advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.