89°
Mostly Sunny then Slight Chance Showers And Thunderstorms
24%
43
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
Mixed conditions today.
Thunderstorms
Full NWS forecast for Today
A slight chance of showers and thunderstorms after 3pm. Mostly sunny. High near 89, with temperatures falling to around 85 in the afternoon. East wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
Tonight
A slight chance of showers and thunderstorms before 1am. Mostly cloudy. Low around 76, with temperatures rising to around 77 overnight. South wind 7 to 12 mph, with gusts as high as 17 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
Weather
- 89°F air — hot — hydrate and seek shade
- 24% rain — pop-up showers possible
Safety
- Thunderstorms — stay off the water when storms approach
- UV 11 (extreme) — spf 50+ mandatory, limit mid-day exposure
36 /100
ok
53 Sunbathe
29 Walk
33 Photo
Best for sunbathing today
Atmosphere
Air Temp
89°F
Partly Cloudy
Wind
6 to 13 mph
E
Rain
24%
Today
UV Peak
11 Extreme
High 11 AM–03 PM · burn in ~18m
Burn-free before 09 AM & after 05 PM
Tomorrow
93°F
Mostly Sunny then Chance Showers And Thunderstorms
Water
Water Temp
—
Next High Tide
6:44 PM
6.1 ft · in 3.9h
Barometer
30.07 inHg
1018 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
6:24 AM
Sunset
8:32 PM
Moon · 80%
Waxing Gibbous
Neap tides — smaller range
Today's Tides
7-day chart →| Time | Type | Height |
|---|---|---|
| 12:04 AM | Low | 0.6 ft |
| 6:00 AM | High | 5.1 ft |
| 11:58 AM | Low | 0.2 ft |
| 6:44 PM | High | 6.1 ft |
7-Day Beach Day Forecast
93°
Mostly Sunny then Chance Showers And Thunderstorms
36%
43
94°
Sunny
9%
75
95°
Sunny then Chance Showers And Thunderstorms
28%
45
93°
Chance Showers And Thunderstorms
49%
30
89°
Chance Showers And Thunderstorms
36%
43
89°
Slight Chance Rain Showers
21%
63
What to Bring Today
- critical SPF 50 sunscreen UV index 11 — very high
- recommended Sturdy umbrella + sand anchor 6 to 13 mph wind
- critical Extra water / electrolytes 89°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
7-Day Tide Chart →
Full high/low predictions for the next week at Cumberland Island National Seashore.
7-Day Weather →
Extended forecast for Cumberland Island National Seashore from the National Weather Service.
Frequently Asked
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