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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Northern Focus Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Hilton Head’s weather is classic subtropical: mild winters, long hot summers, and plenty of sunshine. The live forecast above shows the current conditions, but the island’s real character comes from its seasonal shifts—gentle in January, steamy by July, and always worth checking before you pack.
What does Hilton Head weather look like through the year?
Winters here are the most comfortable for Canadians escaping the deep freeze. Daytime highs in January hover around 15 °C, and nights dip to about 5 °C. Rain is spread fairly evenly, though February can be a bit wetter. By late spring, temperatures climb into the high 20s, and summer brings 30 °C-plus afternoons with high humidity. The sea breeze off the Atlantic helps, but you’ll want shade and water. Autumn is glorious: warm days, cooler nights, and lower humidity from late September through November.
How reliable are long-range forecasts for Hilton Head?
Extended outlooks—like the 10‑day, 15‑day, or 20‑day forecasts—give a general sense of trends but can shift quickly. For example, a hilton head weather 15 day forecast accuweather might show a pattern, but it’s smart to check the live forecast above as your trip gets closer. The island’s position near the Gulf Stream means tropical systems can appear suddenly, especially from June through November. A hilton head weather 30 day forecast is more of a climate guide than a daily plan.
Does Hilton Head get cold enough for frost?
Yes, but rarely. Overnight lows dip below freezing a handful of times each winter, usually in January. A light frost can form, but it melts quickly. If you’re comparing hilton head weather celsius to a Canadian winter, you’ll find it much milder.
What is the water temperature like in summer?
Ocean temperatures off Hilton Head reach about 28 °C in July and August—perfect for swimming. In winter, the water cools to around 15 °C, so wetsuits are common for surfers and paddleboarders.
How does the hilton head weather radar help before a trip?
Radar shows real‑time rain and storms. Since afternoon thunderstorms are common in summer, checking the radar can help you plan beach time or a round of golf. It’s especially useful during hurricane season to track approaching systems.
Sources
For more Canadian-focused weather coverage, check our Canada weather hub or see how conditions compare with Vancouver Weather. If you’re planning a trip around the holidays, our Toronto Weather page provides a familiar benchmark.