Weather Forecast for Hilton Head Island
South Carolina, United States of America
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Current Weather - Hilton Head Island: 25°C
Current Weather - Hilton Head Island: 25°C
South Carolina, United States of America
Sunny
Feels like 29°C
Wind
6 km/h NW
Humidity
86%
Pressure
1015 mb
UV Index
1
Visibility
10 km
Sunny
Thursday, August 13, 2026
High
37°C
Low
24°C
Rain Chance
7%
Hourly Forecast
36°C
37°C
36°C
35°C
32°C
31°C
29°C
29°C
28°C
28°C
Day Statistics
Maximum Wind
15 km/h
Humidity
73%
Precipitation
0 mm
UV Index
10
Visibility
10 km
Rain Chance
7%
Snow Chance
0%
Sun & Moon
Sunrise
06:46 AM
Sunset
08:10 PM
Moonrise
07:25 AM
Moonset
08:46 PM
Moon Phase
New Moon
Moon Illumination
2%
Air Quality
PM2.5
9.4
μg/m³
PM10
10.5
μg/m³
NO₂
3.1
μg/m³
O₃
91.7
μg/m³
SO₂
0.7
μg/m³
CO
142.8
μg/m³
Sunny
Friday, August 14, 2026
High
37°C
Low
26°C
Rain Chance
7%
Hourly Forecast
28°C
28°C
27°C
27°C
27°C
26°C
26°C
26°C
27°C
30°C
32°C
34°C
36°C
36°C
37°C
37°C
34°C
32°C
32°C
32°C
30°C
30°C
29°C
29°C
Day Statistics
Maximum Wind
17 km/h
Humidity
66%
Precipitation
0 mm
UV Index
10
Visibility
10 km
Rain Chance
7%
Snow Chance
0%
Sun & Moon
Sunrise
06:47 AM
Sunset
08:09 PM
Moonrise
08:36 AM
Moonset
09:18 PM
Moon Phase
Waxing Crescent
Moon Illumination
5%
Air Quality
PM2.5
10.4
μg/m³
PM10
11.5
μg/m³
NO₂
3.6
μg/m³
O₃
95
μg/m³
SO₂
0.8
μg/m³
CO
133.9
μg/m³
Sunny
Saturday, August 15, 2026
High
37°C
Low
26°C
Rain Chance
58%
Hourly Forecast
29°C
28°C
28°C
27°C
27°C
26°C
26°C
26°C
27°C
29°C
31°C
33°C
35°C
36°C
37°C
37°C
34°C
31°C
29°C
28°C
28°C
27°C
26°C
26°C
Day Statistics
Maximum Wind
17 km/h
Humidity
73%
Precipitation
2 mm
UV Index
9
Visibility
10 km
Rain Chance
58%
Snow Chance
0%
Sun & Moon
Sunrise
06:47 AM
Sunset
08:08 PM
Moonrise
09:45 AM
Moonset
09:49 PM
Moon Phase
Waxing Crescent
Moon Illumination
11%
Air Quality
PM2.5
10.4
μg/m³
PM10
11.1
μg/m³
NO₂
3.2
μg/m³
O₃
96.1
μg/m³
SO₂
0.8
μg/m³
CO
124.8
μg/m³
Sunny
Sunday, August 16, 2026
High
37°C
Low
26°C
Rain Chance
36%
Hourly Forecast
26°C
27°C
26°C
26°C
26°C
26°C
26°C
26°C
27°C
29°C
31°C
34°C
35°C
36°C
36°C
37°C
37°C
34°C
32°C
31°C
29°C
29°C
28°C
26°C
Day Statistics
Maximum Wind
20 km/h
Humidity
71%
Precipitation
0 mm
UV Index
10
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
06:48 AM
Sunset
08:06 PM
Moonrise
10:52 AM
Moonset
10:20 PM
Moon Phase
Waxing Crescent
Moon Illumination
18%
Air Quality
PM2.5
10.3
μg/m³
PM10
10.8
μg/m³
NO₂
3.2
μg/m³
O₃
102.5
μg/m³
SO₂
0.8
μg/m³
CO
142.6
μg/m³
Sunny
Monday, August 17, 2026
High
39°C
Low
25°C
Rain Chance
36%
Hourly Forecast
28°C
28°C
25°C
28°C
27°C
25°C
27°C
26°C
27°C
30°C
32°C
35°C
36°C
37°C
39°C
38°C
37°C
36°C
35°C
33°C
32°C
30°C
29°C
28°C
Day Statistics
Maximum Wind
17 km/h
Humidity
66%
Precipitation
1 mm
UV Index
9
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
06:49 AM
Sunset
08:05 PM
Moonrise
11:57 AM
Moonset
10:53 PM
Moon Phase
Waxing Crescent
Moon Illumination
27%
Air Quality
PM2.5
11.7
μg/m³
PM10
12.2
μg/m³
NO₂
4.8
μg/m³
O₃
87.7
μg/m³
SO₂
1
μg/m³
CO
258.7
μg/m³
Sunny
Tuesday, August 18, 2026
High
38°C
Low
26°C
Rain Chance
62%
Hourly Forecast
27°C
27°C
27°C
26°C
26°C
26°C
26°C
27°C
27°C
30°C
32°C
35°C
36°C
37°C
38°C
37°C
36°C
36°C
34°C
33°C
31°C
30°C
28°C
27°C
Day Statistics
Maximum Wind
15 km/h
Humidity
67%
Precipitation
6 mm
UV Index
9
Visibility
10 km
Rain Chance
62%
Snow Chance
0%
Sun & Moon
Sunrise
06:49 AM
Sunset
08:04 PM
Moonrise
01:02 PM
Moonset
11:29 PM
Moon Phase
First Quarter
Moon Illumination
37%
Sunny
Wednesday, August 19, 2026
High
34°C
Low
24°C
Rain Chance
57%
Hourly Forecast
26°C
25°C
24°C
24°C
24°C
25°C
25°C
25°C
25°C
28°C
30°C
32°C
33°C
33°C
34°C
33°C
33°C
32°C
31°C
30°C
29°C
28°C
27°C
27°C
Day Statistics
Maximum Wind
14 km/h
Humidity
76%
Precipitation
2 mm
UV Index
8
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:50 AM
Sunset
08:03 PM
Moonrise
02:06 PM
Moonset
Does not set today
Moon Phase
First Quarter
Moon Illumination
48%
Solar Radiation Data
Shortwave Radiation
11.33
Diffuse Radiation
5.86
DNI
0
GTI
0
Weather Alerts
Extreme Heat Warning issued August 13 at 1:48AM EDT until August 13 at 8:00PM EDT by NWS Charleston SC
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 115 possible. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...For the Extreme Heat Warning, from 11 AM this morning to 8 PM EDT this evening. For the Extreme Heat Watch, from Friday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Extreme Heat Watch issued August 13 at 1:48AM EDT until August 14 at 8:00PM EDT by NWS Charleston SC
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 115 possible. * WHERE...Portions of southeast Georgia and southeast South Carolina. * WHEN...For the Extreme Heat Warning, from 11 AM this morning to 8 PM EDT this evening. For the Extreme Heat Watch, from Friday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
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