St. Mary's County, MD · Potomac River
St. Clement's Island State Park
38370 Point Breeze Rd, Coltons Point, MD 20626
62-acre island in the Potomac reachable only by water taxi from the St. Clement's Island Museum — the 1634 landing site of Maryland's first English colonists. Picnic areas, a replica lighthouse, a 40-foot memorial cross, and quiet shorelines. Day-use only.
Today's Conditions
Great day for a beach walk.
NWS alert active · 82°F water
Water
- 82°F water — warm — full-day swim weather
- Moderate nettle risk — 41% probability — expect some stings
Safety
- NWS alert active — small craft advisory issued september 9 at 12:18pm edt until september 10 at 10:00am edt by nws baltimore md/washington dc
Best for walking today
Small Craft Advisory issued September 9 at 12:18PM EDT until September 10 at 10:00AM EDT by NWS Baltimore MD/Washington DC
Full NWS statement
* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt expected. * WHERE...Chesapeake Bay from Drum Point MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN...Until 10 AM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft.
Atmosphere
Water
Sun & Moon
Tides
| Time | Type | Height |
|---|---|---|
| 1:43 AM | High | 2.2 ft |
| 7:34 AM | Low | 0.3 ft |
| 2:16 PM | High | 2.1 ft |
| 7:48 PM | Low | 0.2 ft |
| Time | Type | Height |
|---|---|---|
| 2:36 AM | High | 2.2 ft |
| 8:21 AM | Low | 0.2 ft |
| 3:05 PM | High | 2.2 ft |
| 8:40 PM | Low | 0.2 ft |
| Time | Type | Height |
|---|---|---|
| 3:25 AM | High | 2.2 ft |
| 9:05 AM | Low | 0.2 ft |
| 3:50 PM | High | 2.2 ft |
| 9:28 PM | Low | 0.2 ft |
| Time | Type | Height |
|---|---|---|
| 4:11 AM | High | 2.2 ft |
| 9:46 AM | Low | 0.2 ft |
| 4:33 PM | High | 2.3 ft |
| 10:15 PM | Low | 0.2 ft |
| Time | Type | Height |
|---|---|---|
| 4:56 AM | High | 2.1 ft |
| 10:26 AM | Low | 0.3 ft |
| 5:16 PM | High | 2.2 ft |
| 11:02 PM | Low | 0.3 ft |
| Time | Type | Height |
|---|---|---|
| 5:41 AM | High | 2.0 ft |
| 11:05 AM | Low | 0.3 ft |
| 5:59 PM | High | 2.2 ft |
| 11:49 PM | Low | 0.4 ft |
| Time | Type | Height |
|---|---|---|
| 6:28 AM | High | 1.9 ft |
| 11:42 AM | Low | 0.4 ft |
| 6:44 PM | High | 2.2 ft |
High/low predictions from NOAA station 8578465, refreshed on every build. Times shown local.
What to Bring Today
- critical SPF 50 sunscreen UV index 8 — very high
- optional Swimsuit - water is swimmable Water is 82°F
Always remember water bottle, trash bag (leave no trace).
Beach Info
Parking
Free lot at the museum on Colton's Point; water taxi from there.
Dogs
Leashed dogs permitted on the water taxi and island.
Entry Fee
$7/person round-trip water taxi (includes museum; March 25 – Oct 31)
Address
38370 Point Breeze Rd, Coltons Point, MD 20626
Amenities
Frequently Asked
Is it safe to swim at St. Clement's Island State Park today?
St. Clement's Island State Park 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 St. Clement's Island State Park dog-friendly?
Leashed dogs permitted on the water taxi and island.
Is there an entry fee at St. Clement's Island State Park?
$7/person round-trip water taxi (includes museum; March 25 – Oct 31)
Are there lifeguards at St. Clement's Island State Park?
No lifeguards are stationed at St. Clement's Island State Park. Swim at your own risk and keep close watch on children.
What amenities are at St. Clement's Island State Park?
Amenities at St. Clement's Island State Park include water taxi access, picnic areas, replica lighthouse, trails, interpretive signage.
When is the water warmest at St. Clement's Island State Park?
The tidal Potomac peaks in late July and August at 78-82°F. Swimmable from mid-June into September.
Where is St. Clement's Island State Park located?
St. Clement's Island State Park is in St. Mary's County, MD, at 38370 Point Breeze Rd, Coltons Point, MD 20626.
Nearby Beaches
Updated · Data from NOAA, NWS