94°
Partly Sunny then Chance Showers And Thunderstorms
40%
27
Camden County, GA · Atlantic Ocean
Cumberland Island National Seashore
101 Wheeler Street, St. Marys, GA 31558
Georgia's largest barrier island, accessible only by passenger ferry from St. Marys, Cumberland is a near-pristine 17-mile wilderness of undeveloped beach, maritime forest, salt marsh, and free-ranging feral horses, with the haunting ruins of the Carnegies' Dungeness mansion.
Today's Conditions
Skip the beach today.
Thunderstorms · NWS alert active · 40% rain
Full NWS forecast for Today
A chance of showers and thunderstorms after noon. Partly sunny. High near 94, with temperatures falling to around 92 in the afternoon. Heat index values as high as 109. Southwest wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Tonight
A chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 76. Heat index values as high as 100. Southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Weather
- 94°F air — hot — hydrate and seek shade
- 40% rain — rain likely at some point
Safety
- Thunderstorms — stay off the water when storms approach
- UV 11 (extreme) — spf 50+ mandatory, limit mid-day exposure
- NWS alert active — heat advisory issued july 12 at 12:12am edt until july 12 at 7:00pm edt by nws jacksonville fl
21 /100
skip
33 Sunbathe
12 Walk
25 Photo
Best for sunbathing today
Weather alert in effect
Heat Advisory issued July 12 at 12:12AM EDT until July 12 at 7:00PM EDT by NWS Jacksonville FL
Atmosphere
Air Temp
94°F
Clear
Wind
10 mph
SW
Rain
40%
Today
UV Peak
11 Extreme
High 11 AM–03 PM · burn in ~18m
Burn-free before 09 AM & after 05 PM
Tomorrow
93°F
Showers And Thunderstorms Likely
Water
Water Temp
—
Next High Tide
8:02 PM
7.1 ft · in 4.7h
Wave Height
2.0 ft
E swell
Barometer
30.11 inHg
1020 hPa
Rip Current Risk · Regional Reference
No zone-specific NWS forecast for this beach (GAZ166)
The JAX office's Surf Zone Forecast doesn't cover this beach's forecast zone directly. Nearby coastal zones it does cover are listed below — regional reference only, not a substitute for the conditions at this specific beach.
- FLZ124 Nassau-Duval-Flagler-St. Johns — Yulee, Fernandina Beach, Jacksonville Beach, n/a
- GAZ154 Glynn-Camden — Brunswick, St. Simons, Country Club Estates, n/a
Sun & Moon
Sunrise
6:31 AM
Sunset
8:31 PM
Moon · 5%
Waning Crescent
Spring tides — bigger range
Tides
| Time | Type | Height |
|---|---|---|
| 1:15 AM | Low | 0.1 ft |
| 7:22 AM | High | 5.4 ft |
| 1:16 PM | Low | -0.7 ft |
| 8:02 PM | High | 7.1 ft |
| Time | Type | Height |
|---|---|---|
| 2:14 AM | Low | -0.2 ft |
| 8:24 AM | High | 5.6 ft |
| 2:16 PM | Low | -0.8 ft |
| 9:01 PM | High | 7.3 ft |
| Time | Type | Height |
|---|---|---|
| 3:09 AM | Low | -0.4 ft |
| 9:24 AM | High | 5.8 ft |
| 3:12 PM | Low | -0.9 ft |
| 9:57 PM | High | 7.4 ft |
| Time | Type | Height |
|---|---|---|
| 4:01 AM | Low | -0.5 ft |
| 10:21 AM | High | 6.0 ft |
| 4:07 PM | Low | -0.8 ft |
| 10:50 PM | High | 7.3 ft |
| Time | Type | Height |
|---|---|---|
| 4:50 AM | Low | -0.6 ft |
| 11:17 AM | High | 6.1 ft |
| 5:01 PM | Low | -0.6 ft |
| 11:42 PM | High | 7.0 ft |
| Time | Type | Height |
|---|---|---|
| 5:39 AM | Low | -0.5 ft |
| 12:11 PM | High | 6.2 ft |
| 5:55 PM | Low | -0.3 ft |
| Time | Type | Height |
|---|---|---|
| 12:30 AM | High | 6.7 ft |
| 6:27 AM | Low | -0.3 ft |
| 1:02 PM | High | 6.2 ft |
| 6:50 PM | Low | 0.1 ft |
High/low predictions from NOAA station 8720030, refreshed on every build. Times shown local.
7-Day Beach Day Forecast
93°
Showers And Thunderstorms Likely
69%
11
92°
Showers And Thunderstorms Likely
64%
17
94°
Mostly Sunny then Slight Chance Showers And Thunderstorms
20%
41
91°
Sunny then Slight Chance Showers And Thunderstorms
16%
48
91°
Sunny then Slight Chance Showers And Thunderstorms
21%
45
90°
Sunny then Slight Chance Showers And Thunderstorms
21%
46
What to Bring Today
- critical SPF 50 sunscreen UV index 11 — very high
- recommended Umbrella or shade warm day, light wind
- optional Light cover-up, watch for pop-ups 40% rain chance
- critical Extra water / electrolytes 94°F - heat risk
- recommended Cooling towel or hat sustained heat
Always remember water bottle, trash bag (leave no trace).
Beach Info
Parking
Parking available at the NPS Visitor Center / ferry dock in St. Marys, GA. No parking on the island itself — ferry-only access.
Dogs
No pets permitted on the ferry. Only ADA service animals may board. Emotional support animals and pets are not allowed.
Entry Fee
$15 park entrance fee; ferry fares $44 adult / $42 senior 62+ / $34 youth 6–15 / free under 5
Address
101 Wheeler Street, St. Marys, GA 31558
Amenities
Frequently Asked
Is it safe to swim at Cumberland Island National Seashore today?
Cumberland Island National Seashore 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 Cumberland Island National Seashore dog-friendly?
No pets permitted on the ferry. Only ADA service animals may board. Emotional support animals and pets are not allowed.
Is there an entry fee at Cumberland Island National Seashore?
$15 park entrance fee; ferry fares $44 adult / $42 senior 62+ / $34 youth 6–15 / free under 5
Are there lifeguards at Cumberland Island National Seashore?
No lifeguards are stationed at Cumberland Island National Seashore. Swim at your own risk and keep close watch on children.
What amenities are at Cumberland Island National Seashore?
Amenities at Cumberland Island National Seashore include restrooms, campground (Sea Camp, Stafford, backcountry sites), historic ruins, wilderness hiking, wildlife viewing (wild horses, sea turtles).
When is the water warmest at Cumberland Island National Seashore?
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 Cumberland Island National Seashore located?
Cumberland Island National Seashore is in Camden County, GA, at 101 Wheeler Street, St. Marys, GA 31558.
Nearby Beaches
Updated · Data from NOAA, NWS