87°
Chance Showers And Thunderstorms
68%
17
Baltimore County, MD · Chesapeake Bay
Hart-Miller Island State Park
Boat-access-only island state park in the upper Chesapeake. A full mile of sandy beach and primitive camping only reachable by private boat. One of the most unique beach experiences in Maryland.
Today's Conditions
Skip the beach today.
68% rain · Thunderstorms · NWS alert active
Full NWS forecast for This Afternoon
A chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 87. Southwest wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Tonight
A chance of showers and thunderstorms before 11pm. Some of the storms could be severe. Mostly cloudy, with a low around 77. West wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Weather
- 87°F air — ideal beach weather
- 68% rain — rain likely at some point
Water
- 84°F water — warm — full-day swim weather
- Moderate nettle risk — 40% probability — expect some stings
Safety
- Thunderstorms — stay off the water when storms approach
- NWS alert active — tornado watch issued july 18 at 4:33pm edt until july 18 at 9:00pm edt by nws baltimore md/washington dc
12 /100
skip
0 Swim
29 Sunbathe
0 Walk
23 Photo
Best for sunbathing today
Small Craft Small Craft Advisory
Small Craft Advisory issued July 18 at 7:48AM EDT until July 18 at 11:00PM EDT by NWS Baltimore MD/Washington DC
Full NWS statement
* WHAT...Southwest winds 10 to 15 kt with gusts up to 20 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Chesapeake Bay and adjoining estuaries north of Drum Point MD. * WHEN...From 11 AM this morning to 11 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.
Weather alert in effect
Tornado Watch issued July 18 at 4:33PM EDT until July 18 at 9:00PM EDT by NWS Baltimore MD/Washington DC
Atmosphere
Air Temp
87°F
Light Thunderstorms and Light Rain
Wind
13 mph
SW
Rain
68%
This Afternoon
Tomorrow
85°F
Mostly Sunny
Water
Water Temp
84°F
Swimming weather
Next High Tide
11:05 PM
1.7 ft · in 2.2h
Sea Nettles
Moderate nettle risk
40% probability · Baltimore Harbor buoy
Water Quality
Clean
10 MPN/100mL · Enterococcus
USGS · sampled 10mo ago
Sun & Moon
Sunrise
5:53 AM
Sunset
8:29 PM
Moon · 18%
Waxing Crescent
Neap tides — smaller range
7-Day Beach Day Forecast
85°
Mostly Sunny
4%
84
84°
Sunny
3%
86
87°
Showers And Thunderstorms
78%
13
84°
Chance Showers And Thunderstorms
63%
20
80°
Slight Chance Rain Showers
17%
77
82°
Sunny
7%
86
What to Bring Today
- recommended Sturdy umbrella + sand anchor 13 mph wind
- optional Swimsuit - water is swimmable Water is 84°F
- recommended Rain cover + dry bag 68% chance of rain
Always remember water bottle, trash bag (leave no trace).
Beach Info
Parking
Boat access only. Launch from Rocky Point Park or elsewhere.
Dogs
Dogs permitted on leash.
Entry Fee
Free (boat required)
Address
Hart-Miller Island, MD
Amenities
Frequently Asked
Is it safe to swim at Hart-Miller Island State Park today?
Hart-Miller 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 Hart-Miller Island State Park dog-friendly?
Dogs permitted on leash.
Is there an entry fee at Hart-Miller Island State Park?
Entry to Hart-Miller Island State Park is free.
Are there lifeguards at Hart-Miller Island State Park?
No lifeguards are stationed at Hart-Miller Island State Park. Swim at your own risk and keep close watch on children.
What amenities are at Hart-Miller Island State Park?
Amenities at Hart-Miller Island State Park include primitive camping, restrooms, picnic areas.
When is the water warmest at Hart-Miller Island State Park?
The Chesapeake warms quickly — water temperatures peak in late July and August, typically 78-82°F. Swimming comfortable from mid-June through September.
Where is Hart-Miller Island State Park located?
Hart-Miller Island State Park is in Baltimore County, MD, at Hart-Miller Island, MD.
Nearby Beaches
Updated · Data from NOAA, NWS