Hilton Head Island weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Good
Best time to visit: May – October
What is the weather like in Hilton Head Island in July?
In July, Hilton Head Island is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 28.8 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It rains often – on about 17 days, adding up to 126 mm. On about 17 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a good month for a holiday in Hilton Head Island.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 14 h 5 min06:26 – 20:31
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 59 %on averageAll months
- Hot days
- 17 days30 °C or moreAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %7 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in July
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Hilton Head Island in July: quick answers
Is Hilton Head Island hot in July?
Yes. In July, Hilton Head Island is hot: daytime highs average 30 °C and nights stay around 25 °C. On about 17 days the thermometer climbs to 30 °C or more.
Can you swim in Hilton Head Island in July?
Yes. In July the sea averages 28.8 °C – lovely and warm for swimming.
Does it rain much in Hilton Head Island in July?
It rains often – on about 17 days, adding up to 126 mm.
Hilton Head Island month by month
The whole year in Hilton Head IslandAll destinations: USAWhere to go in JulySea temperature in July
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences