86°
Mostly Sunny
1%
85
St. Mary's County, MD · Patuxent River
Greenwell State Park
25420 Rosedale Manor Ln, Hollywood, MD 20636
A 596-acre working-farm state park with about a mile of Patuxent River shoreline, a small sandy beach, and miles of hiker/biker/equestrian trails. One of the few Maryland parks with on-site therapeutic horseback riding.
Today's Conditions
Ideal for a beach walk.
High nettle risk · 76°F water · 86°F air
Full NWS forecast for Today
Mostly sunny, with a high near 86. South wind 5 to 14 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 70. South wind 9 to 14 mph, with gusts as high as 24 mph.
Weather
- 86°F air — ideal beach weather
- Sunny skies — mostly sunny
Water
- 76°F water — warm — full-day swim weather
- High nettle risk — 4827% probability — reconsider swimming
74 /100
great
52 Swim
83 Sunbathe
87 Walk
73 Fish
80 Photo
Best for walking today
Water level 0.8 ft above predicted
Observed water level is running higher than the astronomical tide prediction. Expect a narrower beach, faster-rising water, and stronger near-shore currents than the tide chart suggests.
Atmosphere
Air Temp
86°F
Partly Cloudy
Wind
5 to 14 mph
S
Rain
1%
Today
UV Peak
9 Very High
High 11 AM–02 PM · burn in ~22m
Burn-free before 09 AM & after 04 PM
Tomorrow
92°F
Mostly Sunny then Chance Showers And Thunderstorms
Water
Water Temp
76°F
Swimming weather
Next Low Tide
5:57 PM
0.2 ft · in 3.3h
Sea Nettles
High nettle risk
4827% probability · Gooses Reef buoy
Water Quality
Clean
10 MPN/100mL · Enterococcus
USGS · sampled 10mo ago
Sun & Moon
Sunrise
5:43 AM
Sunset
8:33 PM
Moon · 80%
Waxing Gibbous
Neap tides — smaller range
Today's Tides
7-day chart →| Time | Type | Height |
|---|---|---|
| 6:09 AM | Low | 0.6 ft |
| 11:37 AM | High | 1.3 ft |
| 5:57 PM | Low | 0.2 ft |
7-Day Beach Day Forecast
92°
Mostly Sunny then Chance Showers And Thunderstorms
27%
38
85°
Showers And Thunderstorms
75%
17
85°
Partly Sunny
14%
86
84°
Mostly Sunny
3%
85
88°
Sunny
3%
85
92°
Sunny
7%
76
What to Bring Today
- critical SPF 50 sunscreen UV index 9 — very high
- recommended Sturdy umbrella + sand anchor 5 to 14 mph wind
- optional Swimsuit - water is swimmable Water is 76°F
Always remember water bottle, trash bag (leave no trace).
Best Fishing Times Today
Solunar theory: fish activity peaks at moon transits (major) and moonrise/moonset (minor). All times local.
Major
8:10 PM - 10:10 PM
Minor
1:50 AM - 2:50 AM
Major
8:40 AM - 10:40 AM
Minor
4:40 PM - 5:40 PM
Beach Info
Parking
Free lot near the Rosedale Manor House; short walk to the water.
Dogs
Leashed dogs welcome on trails and beach year-round.
Entry Fee
Free
Address
25420 Rosedale Manor Ln, Hollywood, MD 20636
Amenities
7-Day Tide Chart →
Full high/low predictions for the next week at Greenwell State Park.
7-Day Weather →
Extended forecast for Greenwell State Park from the National Weather Service.
Frequently Asked
Is Greenwell State Park dog-friendly?
Leashed dogs welcome on trails and beach year-round.
Is there an entry fee at Greenwell State Park?
Entry to Greenwell State Park is free.
Are there lifeguards at Greenwell State Park?
No lifeguards are stationed at Greenwell State Park. Swim at your own risk and keep close watch on children.
What amenities are at Greenwell State Park?
Amenities at Greenwell State Park include beach, trails, picnic area, restrooms, kayak launch, horseback riding.
When is the water warmest at Greenwell State Park?
The Patuxent warms through July to highs around 78-82°F. Best swimming window is late June through early September.
Where is Greenwell State Park located?
Greenwell State Park is in St. Mary's County, MD, at 25420 Rosedale Manor Ln, Hollywood, MD 20636.
Nearby Beaches
Updated · Data from NOAA, NWS