June weather forecast
Hilton Head Island, SC

June in Hilton Head Island ushers in the onset of the peak summer season. Following May, the month experiences an increase in temperature, intensifying the summer quotient. Hilton Head Island jumps into full summer swing with long daylight hours ensuring ample time for beach escapades and outdoor games. Frequent showers become a common occurrence but they hardly damp out the summer enthusiasm. Here, the month records the highest average temperatures from 85.6°F (29.8°C) to 75.6°F (24.2°C), affirming the arrival of true summer.

Temperature

Hilton Head Island perceives a slight temperature ascent during June, with average high-temperatures adjusting from 79.2°F (26.2°C) in May to a still warm 85.6°F (29.8°C). Hilton Head Island's nighttime temperature in June drops to an average of 75.6°F (24.2°C).

Heat index

The heat index value during June is appraised at a sweltering 96.8°F (36°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', quantifies the warmth felt when relative humidity is considered. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Hilton Head Island, the average relative humidity in June is 75%.

Rainfall

In Hilton Head Island, South Carolina, during June, the rain falls for 21.2 days and regularly aggregates up to 3.94" (100mm) of precipitation. Throughout the year, in Hilton Head Island, there are 175.3 rainfall days, and 32.28" (820mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Hilton Head Island.

Ocean temperature

In June, the average ocean temperature in Hilton Head Island is 79.2°F (26.2°C).
Note: Water temperature ranging from 77°F (25°C) to 84.2°F (29°C) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

With an average of 14h and 12min of daylight, June has the longest days of the year.
On the first day of the month, sunrise is at 6:16 am and sunset at 8:25 pm. On the last day of June, in Hilton Head Island, sunrise is at 6:19 am and sunset at 8:33 pm EDT.

Sunshine

The months with the most sunshine are June and July, with an average of 11h of sunshine.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 7 in June leads to these guidelines:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.