Hilton Head climate

Hilton Head Weather in August

NOAA 1991-2020 normals for Beaufort Mcas, 29.9 km from Hilton Head

Average highs run from 92°F on August 1 to 89°F on August 31, and lows from 75°F to 73°F. Normal precipitation for the month is 6.50 in over about 13 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Hilton Head, in °F, with the record for each date.5060708090100110151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
90°F
Average low
74°F
Precipitation
6.50 in
Record high
103°FAug 6, 2008
Record low
57°FAug 29, 1986
Chance of a freeze
0%
Days of 90°F or more
18.9
Daylight
13 h 42 min to 12 h 50 min
Cloud cover
58%
Humidity
77%
Dew point
73°F
Wind
5.1 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Aug 192°F75°F101°F 199066°F 196642%
Aug 292°F75°F100°F 198067°F 196642%
Aug 392°F75°F98°F 197263°F 197642%
Aug 491°F75°F100°F 197266°F 197642%
Aug 591°F75°F100°F 200866°F 197642%
Aug 691°F75°F103°F 200866°F 197642%
Aug 791°F75°F103°F 200862°F 200442%
Aug 891°F75°F100°F 196861°F 200442%
Aug 991°F75°F100°F 200766°F 200242%
Aug 1091°F75°F101°F 200767°F 200442%
Aug 1191°F75°F97°F 202668°F 196942%
Aug 1291°F75°F98°F 202364°F 196742%
Aug 1391°F74°F100°F 202663°F 196742%
Aug 1491°F74°F99°F 202363°F 196742%
Aug 1591°F74°F99°F 202364°F 196742%
Aug 1690°F74°F96°F 195866°F 196742%
Aug 1790°F74°F100°F 196867°F 197642%
Aug 1890°F74°F100°F 202664°F 197641%
Aug 1990°F74°F100°F 202665°F 197641%
Aug 2090°F74°F102°F 198362°F 197641%
Aug 2190°F74°F101°F 198364°F 197641%
Aug 2290°F74°F100°F 196865°F 197341%
Aug 2390°F74°F101°F 196868°F 197341%
Aug 2490°F74°F101°F 196865°F 196941%
Aug 2589°F74°F97°F 196863°F 199740%
Aug 2689°F74°F97°F 198764°F 199440%
Aug 2789°F73°F96°F 199861°F 196640%
Aug 2889°F73°F98°F 198362°F 196840%
Aug 2989°F73°F98°F 198357°F 198639%
Aug 3089°F73°F96°F 202061°F 198639%
Aug 3189°F73°F98°F 197063°F 197639%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Hilton Head, in percent.010203040501102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 6:38 AM, sunset 8:20 PM
August 31
sunrise 6:58 AM, sunset 7:48 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093831 (Beaufort Mcas), public domain. Records: NOAA GHCN-Daily, station USW00093831, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.