92°
Mostly Sunny then Chance Showers And Thunderstorms
38%
25
Charleston County, SC · Atlantic Ocean
Sullivan's Island Beach
Middle St, Sullivan's Island, SC 29482
Charleston's upmarket barrier island — Fort Moultrie at the south tip, Battery Gadsden, large historic cottages, and an enforced quiet beach scene (no music, no chairs left overnight, strict alcohol rules). The most polished of the Charleston-area beaches.
Today's Conditions
Skip the beach today.
Thunderstorms · 85°F water
Full NWS forecast for Today
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Heat index values as high as 108. Southwest wind 8 to 14 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Tonight
Showers and thunderstorms likely before 11pm, then showers and thunderstorms between 11pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Heat index values as high as 101. West wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Weather
- 92°F air — hot — hydrate and seek shade
- 38% rain — pop-up showers possible
Water
- 85°F water — warm — full-day swim weather
Safety
- Thunderstorms — stay off the water when storms approach
- UV 10 (extreme) — spf 50+ mandatory, limit mid-day exposure
20 /100
skip
13 Swim
36 Sunbathe
14 Walk
25 Photo
Best for sunbathing today
Atmosphere
Air Temp
92°F
Clear
Wind
8 to 14 mph
SW
Rain
38%
Today
UV Peak
10 Very High
High 11 AM–04 PM · burn in ~20m
Burn-free before 09 AM & after 06 PM
Tomorrow
87°F
Partly Sunny then Chance Showers And Thunderstorms
Water
Water Temp
85°F
Swimming weather
Next High Tide
7:04 PM
6.4 ft · in 3.8h
Barometer
30.10 inHg
1019 hPa
Water Quality
Clean
10 MPN/100mL · Enterococcus
USGS · sampled 3mo ago
Sun & Moon
Sunrise
6:20 AM
Sunset
8:29 PM
Moon · 5%
Waning Crescent
Spring tides — bigger range
Tides
| Time | Type | Height |
|---|---|---|
| 12:38 AM | Low | 0.2 ft |
| 6:24 AM | High | 4.7 ft |
| 12:32 PM | Low | -0.6 ft |
| 7:04 PM | High | 6.4 ft |
| Time | Type | Height |
|---|---|---|
| 1:37 AM | Low | -0.1 ft |
| 7:27 AM | High | 4.9 ft |
| 1:32 PM | Low | -0.7 ft |
| 8:02 PM | High | 6.6 ft |
| Time | Type | Height |
|---|---|---|
| 2:32 AM | Low | -0.3 ft |
| 8:27 AM | High | 5.1 ft |
| 2:30 PM | Low | -0.8 ft |
| 8:58 PM | High | 6.6 ft |
| Time | Type | Height |
|---|---|---|
| 3:25 AM | Low | -0.4 ft |
| 9:26 AM | High | 5.2 ft |
| 3:26 PM | Low | -0.7 ft |
| 9:53 PM | High | 6.5 ft |
| Time | Type | Height |
|---|---|---|
| 4:15 AM | Low | -0.5 ft |
| 10:24 AM | High | 5.3 ft |
| 4:20 PM | Low | -0.6 ft |
| 10:44 PM | High | 6.2 ft |
| Time | Type | Height |
|---|---|---|
| 5:03 AM | Low | -0.4 ft |
| 11:19 AM | High | 5.4 ft |
| 5:13 PM | Low | -0.3 ft |
| 11:33 PM | High | 5.9 ft |
| Time | Type | Height |
|---|---|---|
| 5:50 AM | Low | -0.3 ft |
| 12:13 PM | High | 5.4 ft |
| 6:07 PM | Low | 0.1 ft |
High/low predictions from NOAA station 8665530, refreshed on every build. Times shown local.
7-Day Beach Day Forecast
87°
Partly Sunny then Chance Showers And Thunderstorms
46%
30
86°
Showers And Thunderstorms Likely
63%
22
89°
Mostly Sunny then Slight Chance Showers And Thunderstorms
21%
41
90°
Sunny
9%
76
91°
Sunny
13%
73
89°
Sunny then Slight Chance Showers And Thunderstorms
24%
38
What to Bring Today
- critical SPF 50 sunscreen UV index 10 — very high
- recommended Sturdy umbrella + sand anchor 8 to 14 mph wind
- optional Swimsuit - water is swimmable Water is 85°F
- optional Light cover-up, watch for pop-ups 38% rain chance
- critical Extra water / electrolytes 92°F - heat risk
- recommended Cooling towel or hat sustained heat
Always remember water bottle, trash bag (leave no trace).
Beach Info
Parking
Free street parking only — limited spaces, no public lots. Bike from Charleston via the Ravenel Bridge if you can.
Dogs
May 1 – Sep 30: dogs allowed on the beach only 6 PM – 10 AM (off-leash 5 AM – 10 AM, on-leash 6 PM – 5 AM); prohibited 10 AM – 6 PM. Oct 1 – April 30: off-leash 5 AM – noon, on-leash noon – 5 AM. Town dog license required.
Entry Fee
Free
Address
Middle St, Sullivan's Island, SC 29482
Amenities
Frequently Asked
Is it safe to swim at Sullivan's Island Beach today?
Sullivan's Island Beach shows a live water-quality reading (bacteria levels) and today's swim-safety score at the top of this page, refreshed on every update. No lifeguards are on duty, so check the day's conditions and swim with caution. Always review the current advisories, surf, and rip-current notes before getting in the water.
Is Sullivan's Island Beach dog-friendly?
May 1 – Sep 30: dogs allowed on the beach only 6 PM – 10 AM (off-leash 5 AM – 10 AM, on-leash 6 PM – 5 AM); prohibited 10 AM – 6 PM. Oct 1 – April 30: off-leash 5 AM – noon, on-leash noon – 5 AM. Town dog license required.
Is there an entry fee at Sullivan's Island Beach?
Entry to Sullivan's Island Beach is free.
Are there lifeguards at Sullivan's Island Beach?
No lifeguards are stationed at Sullivan's Island Beach. Swim at your own risk and keep close watch on children.
What amenities are at Sullivan's Island Beach?
Amenities at Sullivan's Island Beach include fort historic site, restaurants nearby, no restrooms on most of the beach.
When is the water warmest at Sullivan's Island Beach?
Atlantic water temperatures peak in August. Northern beaches (ME, NH, MA) run cool — typically 60-68°F at the summer peak. Mid-Atlantic (NJ, DE, MD, VA) hits 74-76°F. The Carolinas and Florida Atlantic warm into the 80s and stay swimmable from May through October.
Where is Sullivan's Island Beach located?
Sullivan's Island Beach is in Charleston County, SC, at Middle St, Sullivan's Island, SC 29482.
Nearby Beaches
Updated · Data from NOAA, NWS