Local weather forecast

Weather in Saint Helena Island, SC

Updated 2026-08-11 11:15 local time · ZIP codes 29920

Sunny
Now91°F

Sunny

High / Low96° / 77°
Rain chance6%
Wind7 mph
Weather alerts

Active alerts

1
Heat Advisory issued August 11 at 2:18AM EDT until August 11 at 8:00PM EDT by NWS Charleston SC

* WHAT...Heat index values up to 110 expected. * WHERE...Beaufort, Charleston, Coastal Colleton, and Tidal Berkeley Counties. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Safety instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Hourly

Next hours

NowSunny91°7% rain
12 PMSunny94°3% rain
1 PMSunny96°2% rain
2 PMSunny96°3% rain
3 PMSunny94°3% rain
4 PMSunny95°3% rain
5 PMSunny94°3% rain
6 PMSunny92°3% rain
7 PMSunny90°3% rain
8 PMSunny87°6% rain
9 PMClear86°4% rain
10 PMClear85°5% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
96° 77°Sunny
Rain 6%Gust 15 mph
Tomorrow2026-08-12
Sunny
96° 82°Sunny
Rain 5%Gust 16 mph
Thursday2026-08-13
Sunny
94° 79°Sunny
Rain 36%Gust 17 mph
Conditions

Weather details

Feels like105°F
Humidity74%
Pressure30.10 inHg
Visibility6 mi
Wind7 mph W
Wind gusts8 mph
Precipitation0.00 in
UV index7
Daylight

Sunrise, sunset and moon

Sunrise06:43 AM
Sunset08:11 PM
Moonrise04:52 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella not essential

Rain chance stays relatively low over the next 12 hours (up to 7%).

Choose light, breathable clothing

It feels like 105°F with winds near 7 mph.

Best window: 7 PM

90°F, 3% rain chance and 13 mph wind.

Allow a little extra driving time

Visibility is around 6 mi; gusts may reach 24 mph.

Running conditions are less comfortable

Current temperature is 91°F, wind 7 mph, rain chance up to 7%.

High UV protection needed

UV index is 7. Sunscreen, shade and protective clothing are recommended.

Saint Helena Island weather today

Sunny and 91°F in Saint Helena Island, SC. Today's high is 96°F with a 6% rain chance. Winds are around 7 mph with gusts near 8 mph. Relative humidity is 74%, pressure is 30.10 inHg, and visibility is about 6 miles.

Tonight and tomorrow in Saint Helena Island

Sunrise is at 06:43 AM and sunset is at 08:11 PM. Tomorrow's forecast calls for Sunny with a high near 96°F and a low near 82°F. The maximum rain chance is 5%.

Nearby

Weather near Saint Helena Island

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