89°
Chance Showers And Thunderstorms
69%
16
Harford County, MD · Chesapeake Bay
Mariner Point Park
100 Kearney Dr, Joppa, MD 21085
A 107-acre Harford County park at the confluence of the Gunpowder and Little Gunpowder Rivers. Wooded trails, a kayak launch, fishing pier, dog park, and small shoreline spots for wading. No designated swim beach — one of the best paddling put-ins on the upper Bay.
Today's Conditions
Skip the beach today.
69% 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 89. Southwest wind around 10 mph, with gusts as high as 18 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 4am. Some of the storms could be severe. Mostly cloudy, with a low around 74. West wind around 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Weather
- 89°F air — hot — hydrate and seek shade
- 69% 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
8 /100
skip
0 Swim
26 Sunbathe
0 Walk
0 Fish
22 Photo
Best for sunbathing today
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
Flood Watch issued July 18 at 11:43AM EDT until July 18 at 8:00PM EDT by NWS Baltimore MD/Washington DC
Air Quality Alert issued July 17 at 4:40PM EDT by NWS Baltimore MD/Washington DC
Atmosphere
Air Temp
89°F
Light Thunderstorms and Light Rain
Wind
10 mph
SW
Rain
69%
This Afternoon
UV Peak
8 Very High
High 12 PM–02 PM · burn in ~25m
Burn-free before 09 AM & after 05 PM
Tomorrow
84°F
Sunny
Water
Water Temp
84°F
Swimming weather
Sea Nettles
Moderate nettle risk
40% probability · Baltimore Harbor buoy
Water Quality
Clean
10 MPN/100mL · Enterococcus
USGS · sampled 10mo ago
Sun & Moon
Sunrise
5:52 AM
Sunset
8:29 PM
Moon · 18%
Waxing Crescent
Neap tides — smaller range
Tides
| Time | Type | Height |
|---|---|---|
| 12:22 AM | High | 1.4 ft |
| 6:02 AM | Low | 0.4 ft |
| 11:55 AM | High | 1.6 ft |
| 6:38 PM | Low | -0.1 ft |
| Time | Type | Height |
|---|---|---|
| 1:16 AM | High | 1.5 ft |
| 7:02 AM | Low | 0.5 ft |
| 12:39 PM | High | 1.5 ft |
| 7:20 PM | Low | -0.1 ft |
| Time | Type | Height |
|---|---|---|
| 2:10 AM | High | 1.6 ft |
| 8:07 AM | Low | 0.6 ft |
| 1:26 PM | High | 1.3 ft |
| 8:06 PM | Low | -0.1 ft |
| Time | Type | Height |
|---|---|---|
| 3:05 AM | High | 1.7 ft |
| 9:14 AM | Low | 0.6 ft |
| 2:18 PM | High | 1.1 ft |
| 8:53 PM | Low | -0.0 ft |
| Time | Type | Height |
|---|---|---|
| 3:58 AM | High | 1.8 ft |
| 10:16 AM | Low | 0.6 ft |
| 3:17 PM | High | 1.0 ft |
| 9:41 PM | Low | 0.0 ft |
| Time | Type | Height |
|---|---|---|
| 4:48 AM | High | 1.8 ft |
| 11:16 AM | Low | 0.5 ft |
| 4:18 PM | High | 0.9 ft |
| 10:26 PM | Low | 0.1 ft |
| Time | Type | Height |
|---|---|---|
| 5:38 AM | High | 1.8 ft |
| 12:17 PM | Low | 0.5 ft |
| 5:21 PM | High | 0.8 ft |
| 11:13 PM | Low | 0.2 ft |
High/low predictions from NOAA station 8574459, refreshed on every build. Times shown local.
7-Day Beach Day Forecast
84°
Sunny
3%
85
84°
Sunny
3%
86
86°
Showers And Thunderstorms
79%
14
85°
Chance Showers And Thunderstorms
60%
23
81°
Slight Chance Rain Showers
17%
77
84°
Sunny
7%
85
What to Bring Today
- critical SPF 50 sunscreen UV index 8 — very high
- recommended Umbrella or shade warm day, light wind
- optional Swimsuit - water is swimmable Water is 84°F
- recommended Rain cover + dry bag 69% chance of rain
- critical Extra water / electrolytes 89°F - heat risk
- recommended Cooling towel or hat sustained heat
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.
Minor
10:20 PM - 11:20 PM
Major
3:40 AM - 5:40 AM
Minor
10:10 AM - 11:10 AM
Major
3:50 PM - 5:50 PM
Beach Info
Parking
Free lot.
Dogs
Leashed dogs permitted throughout park; separate fenced dog park on-site.
Entry Fee
Free
Address
100 Kearney Dr, Joppa, MD 21085
Amenities
Frequently Asked
Is it safe to swim at Mariner Point Park today?
Mariner Point 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 Mariner Point Park dog-friendly?
Leashed dogs permitted throughout park; separate fenced dog park on-site.
Is there an entry fee at Mariner Point Park?
Entry to Mariner Point Park is free.
Are there lifeguards at Mariner Point Park?
No lifeguards are stationed at Mariner Point Park. Swim at your own risk and keep close watch on children.
What amenities are at Mariner Point Park?
Amenities at Mariner Point Park include dog park, kayak launch, fishing pier, trails, playground, restrooms, disc golf.
When is the water warmest at Mariner Point 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 Mariner Point Park located?
Mariner Point Park is in Harford County, MD, at 100 Kearney Dr, Joppa, MD 21085.
Nearby Beaches
Updated · Data from NOAA, NWS