Weather Forecast for Hilton Head Island

South Carolina, United States of America

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Partly Cloudy

Current Weather - Hilton Head Island: 26°C

South Carolina, United States of America

Partly Cloudy

Feels like 29°C

Wind

7 km/h WNW

Humidity

92%

Pressure

1014 mb

UV Index

0

Visibility

10 km

Sunny

Sunny

Saturday, September 05, 2026

High

33°C

Low

25°C

Rain Chance

10%

Hourly Forecast

Sunny 31°C
14:00
Sunny 31°C
15:00
Sunny 31°C
16:00
Sunny 31°C
17:00
Sunny 30°C
18:00
Sunny 30°C
19:00
Clear 29°C
20:00
Clear 28°C
21:00
Clear 28°C
22:00
Clear 28°C
23:00
Sep 06

Day Statistics

Maximum Wind

20 km/h

Humidity

79%

Precipitation

0 mm

UV Index

9

Visibility

10 km

Rain Chance

10%

Snow Chance

0%

Sun & Moon

Sunrise

07:01 AM

Sunset

07:43 PM

Moonrise

12:19 AM

Moonset

03:32 PM

Moon Phase

Waning Crescent

Moon Illumination

29%

Air Quality

PM2.5

4.7

μg/m³

PM10

5.4

μg/m³

NO₂

2.8

μg/m³

O₃

76.1

μg/m³

SO₂

0.7

μg/m³

CO

120.1

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

8.3

Diffuse Radiation

3.49

DNI

0

GTI

0

Weather Alerts

Heat Advisory issued September 5 at 2:16AM EDT until September 5 at 8:00PM EDT by NWS Charleston SC

Effingham; Inland Chatham; Coastal Chatham; Hampton; Inland Colleton; Dorchester; Inland Berkeley; Inland Jasper; Beaufort; Coastal Colleton; Charleston; Coastal Jasper; Tidal Berkeley Sep 5, 02:16 AM - Sep 5, 10:30 AM
Severity: Moderate Urgency: Expected

* WHAT...Heat index values up to 110 degrees expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sunshine, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Event: Heat Advisory Certainty: Likely Category: Met

Heat Advisory issued September 5 at 7:06AM EDT until September 5 at 8:00PM EDT by NWS Charleston SC

Effingham; Inland Chatham; Coastal Chatham; Hampton; Inland Colleton; Dorchester; Inland Berkeley; Inland Jasper; Beaufort; Coastal Colleton; Charleston; Coastal Jasper; Tidal Berkeley Sep 5, 07:06 AM - Sep 5, 03:15 PM
Severity: Moderate Urgency: Expected

* WHAT...Heat index values up to 110 degrees expected. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sunshine, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Event: Heat Advisory Certainty: Likely Category: Met