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As of 10:21 EDT

Weather in Sullivan's Island, SC

84°Current weather

Sullivan's Island, Sunday, 9 August, 10:21

Partly cloudy. Feels like 96°. High 88°, low 75°.

Pressure30.15 inHg
Wind3 mph N
Humidity82%
Visibility6.2 mi
Dew point78°

Two-week outlook for Sullivan's Island, SC: week one averages a high of 90° and week two 85.7°, so week two runs 4.3° cooler than week one. Around 5.6 inches of precipitation are expected over the 14 days, across 11 wet days. The nearest weekend, August 9: 88°, with precipitation.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)90°78.7°1.2 in / 5 d—
2nd (August 16 – August 22)85.7°77.3°4.5 in / 6 d—

Weekend weather

Sun, August 9
Rain
88°75°
0.16 in
Sat, August 15
Rain
86°81°
0.35 in
Sun, August 16
Light rain
84°80°
0.15 in
Sat, August 22
Light rain
85°76°
0.07 in
Mon, 1089° / 77°0.33Rain
89 °Rain

Sullivan's Island, Monday, 10 August

Rain. High 89°, low 77°.

Pressure30.12 inHg
Wind9.5 mph SW
Humidity63%
Visibility6.2 mi
Dew point73°
Tue, 1191° / 77°0.12Rain
91 °Rain

Sullivan's Island, Tuesday, 11 August

Rain. High 91°, low 77°.

Pressure30.06 inHg
Wind6.6 mph W
Humidity61%
Visibility6.2 mi
Dew point74°
Wed, 1293° / 80°0Clear
93 °Clear

Sullivan's Island, Wednesday, 12 August

Clear. High 93°, low 80°.

Pressure29.94 inHg
Wind9.2 mph W
Humidity55%
Visibility6.2 mi
Dew point73°
Thu, 1393° / 79°0.03Light rain
93 °Light rain

Sullivan's Island, Thursday, 13 August

Light rain. High 93°, low 79°.

Pressure29.91 inHg
Wind14.9 mph S
Humidity58%
Visibility—
Dew point74°
Fri, 1489° / 81°0.18Rain
89 °Rain

Sullivan's Island, Friday, 14 August

Rain. High 89°, low 81°.

Pressure30.03 inHg
Wind17.6 mph S
Humidity66%
Visibility—
Dew point75°
Sat, 1586° / 81°0.35Rain
86 °Rain

Sullivan's Island, Saturday, 15 August

Rain. High 86°, low 81°.

Pressure30.15 inHg
Wind13.8 mph E
Humidity79%
Visibility—
Dew point76°
Sun, 1684° / 80°0.15Light rain
84 °Light rain

Sullivan's Island, Sunday, 16 August

Light rain. High 84°, low 80°.

Pressure30.12 inHg
Wind13.7 mph SE
Humidity70%
Visibility—
Dew point73°
Mon, 1785° / 81°0.11Light rain
85 °Light rain

Sullivan's Island, Monday, 17 August

Light rain. High 85°, low 81°.

Pressure30.00 inHg
Wind18.2 mph SW
Humidity78%
Visibility—
Dew point76°
Tue, 1886° / 74°3.91Heavy rain
86 °Heavy rain

Sullivan's Island, Tuesday, 18 August

Heavy rain. High 86°, low 74°.

Pressure29.94 inHg
Wind25 mph S
Humidity75%
Visibility—
Dew point77°
Wed, 1986° / 76°0.12Light rain
86 °Light rain

Sullivan's Island, Wednesday, 19 August

Light rain. High 86°, low 76°.

Pressure29.94 inHg
Wind17.3 mph SW
Humidity69%
Visibility—
Dew point73°
Thu, 2085° / 77°0.03Light rain
85 °Light rain

Sullivan's Island, Thursday, 20 August

Light rain. High 85°, low 77°.

Pressure29.88 inHg
Wind17.9 mph SW
Humidity69%
Visibility—
Dew point72°
Fri, 2189° / 77°0.08Light rain
89 °Light rain

Sullivan's Island, Friday, 21 August

Light rain. High 89°, low 77°.

Pressure29.88 inHg
Wind14.2 mph S
Humidity57%
Visibility—
Dew point70°
Sat, 2285° / 76°0.07Light rain
85 °Light rain

Sullivan's Island, Saturday, 22 August

Light rain. High 85°, low 76°.

Pressure30.03 inHg
Wind18.4 mph SW
Humidity69%
Visibility—
Dew point72°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in Sullivan's Island, SC, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.