July Weather on Hilton Head Island
July is peak summer on Hilton Head Island, bringing hot temperatures, warm ocean water, and classic beach vacation weather. Visitors searching for Hilton Head Island weather in July can expect sunny days, higher humidity, and ideal conditions for swimming, boating, and spending time on the beach.
Average Temperatures in July
The average temperature on Hilton Head Island in July is the warmest of the year, with hot afternoons and warm evenings.
- Average High: 88–91°F (31–33°C)
- Average Low: 74–77°F (23–25°C)
Mornings tend to be warm and comfortable, while afternoons can feel hot, especially with humidity. Evenings remain warm, making sunset walks, outdoor dining, and evening beach time very popular.
Humidity in July
Humidity is at its highest in July, which can make temperatures feel warmer than the actual reading.
- Average humidity: 75–85%
- Feels-like temperatures: Often mid to upper 90s in the afternoon
Planning outdoor activities in the early morning or evening is recommended during July.
Average Rainfall in July
July continues the summer pattern of brief afternoon thunderstorms. These showers are typically short and help cool things down.
- Average rainfall: about 5–6 inches
- Average rainy days: 12–14 days
Rain usually arrives as quick afternoon or evening storms, followed by clearing skies. Most days still provide plenty of sunshine.
Ocean Water Temperature
July offers some of the warmest ocean water of the year on Hilton Head Island.
- Average ocean temperature: 82–85°F
The warm Atlantic water makes July perfect for swimming, floating, paddleboarding, kayaking, and other water activities.
What to Wear on Hilton Head Island in July
Packing for Hilton Head Island in July means preparing for hot and humid summer weather. Lightweight clothing and sun protection are essential.
Recommended clothing includes:
- Shorts and lightweight outfits
- Breathable t-shirts or tank tops
- Swimsuits and cover-ups
- Sandals or breathable shoes
- Hat and sunglasses
- Sunscreen (reapply often)
- Light rain jacket or umbrella for quick storms
Evenings remain warm, so jackets or heavier layers are rarely needed.
Are Dogs Allowed on the Beach in July?
July falls within Hilton Head Island's summer beach regulations for dogs.
From April 1 through September 30, dogs are allowed on the beach before 10:00 AM and after 5:00 PM and must be on a leash. These cooler times of day are ideal for walking your dog along the shoreline.
Peak Summer Weather on Hilton Head Island
Overall, Hilton Head Island weather in July delivers classic summer beach conditions with hot temperatures, warm ocean water, and long sunny days. Whether you're spending time on the beach, enjoying water activities, or heading out for evening walks, July is one of the most popular months to experience summer on Hilton Head Island.
