Weather in Saint Helena Island, SC
Updated 2026-09-26 14:00 local time · ZIP codes 29920
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
55°33% rain55°33% rain55°30% rain55°29% rain55°29% rain
55°29% rain55°28% rain55°28% rain
55°37% rain55°35% rain55°35% rain
55°16% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
There is a moderate rain chance, peaking near 37%.
It feels like 50°F with winds near 11 mph.
55°F, 28% rain chance and 9 mph wind.
Visibility is around 6 mi; gusts may reach 12 mph.
Current temperature is 55°F, wind 11 mph, rain chance up to 37%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Saint Helena Island
South Carolina has hot humid summers and generally mild winters. Coastal areas are exposed to tropical systems, while the northwest is somewhat cooler with elevation.
Saint Helena Island is part of the South weather region. The forecast point is near 37.05°N latitude and 12.30°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Saint Helena Island weather today
Patchy rain nearby and 55°F in Saint Helena Island, SC. Today's high is 55°F with a 54% rain chance. Winds are around 11 mph with gusts near 11 mph. Relative humidity is 94%, pressure is 30.23 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Saint Helena Island
Sunrise is at 06:32 AM and sunset is at 06:48 PM. Tomorrow's forecast calls for Patchy rain nearby with a high near 58°F and a low near 55°F. The maximum rain chance is 89%.