Nearby Harbors
39.0283’ N, 74.8017’ W

Nummy Island, Grassy Sound Channel, NJ

54°
H -°
L 48°
N
7mph
Low tide
10:55 pm

Nummy Island, Grassy Sound Channel, NJ Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Oct 20 		Clear
Close Hourly 		-º / 48º 2% N 14 mph 72%
9pm Clear 54º 1% N 7 mph 77%
10pm Clear 53º 1% N 9 mph 78%
11pm Clear 53º 1% NNE 10 mph 77%
Wed
Oct 21 		Partly Cloudy
View Hourly 		64º / 46º 3% N 16 mph 58%
12am Clear 55º 1% N 13 mph 69%
1am Clear 54º 1% N 14 mph 69%
2am Clear 54º 1% N 14 mph 67%
3am Clear 53º 1% N 14 mph 69%
4am Clear 51º 2% N 13 mph 69%
5am Clear 50º 2% N 14 mph 71%
6am Clear 49º 2% N 13 mph 73%
7am Clear 49º 3% N 13 mph 73%
8am Sunny 50º 2% N 14 mph 72%
9am Partly Cloudy 52º 1% N 14 mph 69%
10am Partly Cloudy 55º 1% N 15 mph 65%
11am Mostly Sunny 57º 1% NNE 16 mph 60%
12pm Partly Cloudy 59º 0% N 15 mph 54%
1pm Partly Cloudy 61º 0% N 15 mph 50%
2pm Partly Cloudy 62º 0% N 14 mph 49%
3pm Mostly Cloudy 63º 0% N 14 mph 48%
4pm Mostly Cloudy 63º 0% N 13 mph 48%
5pm Partly Cloudy 62º 0% N 13 mph 49%
6pm Mostly Cloudy 60º 0% N 10 mph 53%
7pm Mostly Cloudy 57º 0% N 9 mph 59%
8pm Mostly Cloudy 55º 0% N 9 mph 63%
9pm Partly Cloudy 54º 0% N 10 mph 64%
10pm Mostly Cloudy 54º 0% N 9 mph 65%
11pm Partly Cloudy 53º 0% N 10 mph 67%
Thu
Oct 22 		Sunny
View Hourly 		67º / 47º 2% NNW 13 mph 50%
12am Partly Cloudy 51º 1% NNW 10 mph 70%
1am Partly Cloudy 51º 1% NNW 11 mph 69%
2am Mostly Clear 50º 1% NNW 11 mph 70%
3am Mostly Clear 49º 1% NNW 11 mph 70%
4am Mostly Clear 48º 1% NNW 11 mph 70%
5am Mostly Clear 48º 1% NNW 11 mph 70%
6am Mostly Clear 47º 1% NNW 11 mph 71%
7am Partly Cloudy 47º 1% NNW 11 mph 71%
8am Mostly Sunny 48º 2% NNW 11 mph 69%
9am Sunny 51º 1% NNW 12 mph 66%
10am Sunny 55º 0% NNW 12 mph 57%
11am Sunny 58º 0% NNW 13 mph 49%
12pm Sunny 60º 0% NNW 13 mph 43%
1pm Sunny 63º 0% NNW 12 mph 38%
2pm Sunny 65º 0% NNW 11 mph 37%
3pm Sunny 65º 0% NNW 12 mph 37%
4pm Sunny 66º 0% NNW 11 mph 38%
5pm Sunny 65º 0% NNW 9 mph 42%
6pm Sunny 63º 0% NW 7 mph 49%
7pm Clear 60º 0% NW 7 mph 57%
8pm Clear 58º 0% NNW 6 mph 63%
Fri
Oct 23 		Sunny 59º / 46º 2% NE 13 mph 59%
Sat
Oct 24 		Sunny 61º / 45º 3% NE 7 mph 61%
Sun
Oct 25 		Sunny 63º / 47º 4% NE 6 mph 65%
Mon
Oct 26 		Sunny 67º / 50º 6% NW 8 mph 65%
Tue
Oct 27 		Partly Cloudy 67º / 51º 5% N 11 mph 67%

Weather Radar for Nummy Island, Grassy Sound Channel, NJ See Radar

See Radar Map

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Nummy Island, Grassy Sound Channel, NJ

Tonight
Low : 46ºF
NNE wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas 1 to 2 ft.
Wednesday
High : 61ºF
NNE wind 15 to 20 kt, with gusts as high as 30 kt. Mostly sunny. Seas around 2 ft.
Wednesday Night
Low : 41ºF
N wind 5 to 10 kt, with gusts as high as 20 kt. Partly cloudy. Seas 1 to 2 ft.
Thursday
High : 63ºF
NNW wind around 10 kt. Sunny. Seas around 1 ft.
Thursday Night
Low : 44ºF
N wind 5 to 10 kt. Clear. Seas around 1 ft.
Friday
High : 54ºF
NNE wind around 10 kt. Sunny. Seas around 1 ft.
Friday Night
Low : 43ºF
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Saturday
High : 55ºF
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Saturday Night
Low : 46ºF
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

NOAA Buoy Data Near Nummy Island, Grassy Sound Channel, NJ See Map

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    Wind Speed Forecast for Nummy Island, Grassy Sound Channel, NJ

    WednesdayThursday
    Wind Speed (MPH) 7141414151310111112129
    1am5am9am1pm5pm9pm1am5am9am1pm5pm9pm
    MPH 7141414151310111112129
    DIR NNNNNNNNNWNNWNNWNNWNNW

    Current Weather Conditions In Nummy Island, Grassy Sound Channel, NJ

    As Of: 10 minutes ago

    • 54ºF
    • 52ºF
    • 7mph
    • 0º (N)
    • 7mph
    • Clear
    • 10mi
    • 30.19"
    • 77%
    • 0ºF

    The weather right now in Nummy Island, Grassy Sound Channel, NJ is Clear. The current temperature is 54°F, and the expected high and low for today, Tuesday, October 20, 2026, are -° high temperature and 48°F low temperature. The wind is currently blowing at 7 miles per hour, and coming from the North. The wind is gusting to 7 mph. With the wind and the atmosphere the temperature feels like 52° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 77 percent, and air pressure at 30.19 in. Visibility is 10 nautical miles. There are 2 current weather alert(s).

    Weather Alerts
    Gale Warning - 2:52pm Tue Oct 20 2026

    ...GALE WARNING REMAINS IN EFFECT UNTIL 6 PM EDT WEDNESDAY...

    WHAT: Northeast winds 20 to 25 kt with gusts up to 40 kt and
    seas 7 to 11 ft.

    WHERE: Coastal waters from Manasquan Inlet to Little Egg
    Inlet NJ out 20 NM, Coastal waters from Little Egg Inlet to
    Great Egg Inlet NJ out 20 NM, Coastal waters from Great Egg
    Inlet to Cape May NJ out 20 NM, Coastal waters from Cape May
    NJ to Cape Henlopen DE out 20 NM and Coastal waters from Cape
    Henlopen to Fenwick Island DE out 20 NM.

    WHEN: Until 6 PM EDT Wednesday.

    IMPACTS: Strong winds will cause hazardous seas which could
    capsize or damage vessels and reduce visibility.

    ADDITIONAL DETAILS: The strongest winds should occur later
    tonight and for a time on Wednesday.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Mariners should alter plans to avoid these hazardous conditions.
    Remain in port, seek safe harbor, alter course, and/or secure the
    vessel for hazardous conditions.

    &&

    Coastal Flood Advisory - 3:18pm Tue Oct 20 2026

    ...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 10 PM EDT WEDNESDAY...

    WHAT: Up to one foot of inundation above ground level in low-
    lying areas near shorelines and tidal waterways.

    WHERE: Ocean, Atlantic, Cape May, Atlantic Coastal Cape May,
    Coastal Atlantic, Coastal Ocean and Southeastern Burlington.

    WHEN: Until 10 PM EDT Wednesday.

    IMPACTS: At this level, flooding begins on the most
    vulnerable roads in coastal and bayside communities, and along
    inland tidal waterways. Some partial or full road closures are
    possible.

    ADDITIONAL DETAILS: Additional elevated high tide cycles beyond
    Wednesday evening are expected.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    A Coastal Flood Advisory means that minor tidal flooding is
    expected. Minor tidal flooding often results in some road
    closures. Usually, the most vulnerable roadways will flood.

    Do not leave your vehicle at a location that is prone to tidal
    flooding. Do not drive your vehicle through flood waters. The
    water may be deeper than you think it is. You will be putting
    yourself in danger and your vehicle may be damaged, leading to
    costly repairs.

    Visit the National Water Prediction Service at
    https://water.noaa.gov/wfo/phi for additional water level and
    flood impact information for your local tide gauge.

    &&

    Time of high total tides are approximate to the nearest hour.

    Atlantic Ocean at Atlantic City
    MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft
    MHHW Categories - Minor 1.4 ft, Moderate 2.4 ft, Major 3.4 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Flood
    ft MLLW ft MHHW ft Impact
    -------- --------- --------- --------- --------
    20/04 PM 5.9 1.3 1.8 None
    21/04 AM 6.1 1.5 2.5 Minor
    21/04 PM 6.8 2.2 2.7 Minor
    22/05 AM 6.5 1.9 2.5 Minor
    22/05 PM 6.3 1.7 2.0 Minor
    23/06 AM 6.2 1.6 1.9 Minor

    Great Egg Harbor Bay at Ocean City
    MLLW Categories - Minor 5.3 ft, Moderate 6.3 ft, Major 7.3 ft
    MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Flood
    ft MLLW ft MHHW ft Impact
    -------- --------- --------- --------- --------
    20/05 PM 5.4 1.4 1.7 Minor
    21/05 AM 5.5 1.5 2.2 Minor
    21/05 PM 6.1 2.1 2.3 Minor
    22/06 AM 5.6 1.6 2.1 Minor
    22/05 PM 5.6 1.6 1.9 Minor
    23/06 AM 5.3 1.3 1.5 Minor

    Cape May Harbor at Cape May
    MLLW Categories - Minor 6.2 ft, Moderate 7.2 ft, Major 8.2 ft
    MHHW Categories - Minor 1.1 ft, Moderate 2.1 ft, Major 3.1 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Flood
    ft MLLW ft MHHW ft Impact
    -------- --------- --------- --------- --------
    20/04 PM 6.3 1.2 1.8 Minor
    21/05 AM 6.3 1.2 2.4 Minor
    21/05 PM 7.1 2.0 2.5 Minor
    22/05 AM 6.5 1.4 2.4 Minor
    22/06 PM 6.5 1.4 1.8 Minor
    23/06 AM 6.3 1.2 1.5 Minor

    Barnegat Bay at Barnegat Light
    MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
    MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft

    Total Total Departure
    Day/Time Tide Tide from Norm Flood
    ft MLLW ft MHHW ft Impact
    -------- --------- --------- --------- --------
    20/04 PM 3.4 0.9 1.1 None
    21/04 AM 3.8 1.3 1.7 Minor
    21/05 PM 4.2 1.7 1.8 Minor
    22/05 AM 4.1 1.6 1.8 Minor
    22/05 PM 3.8 1.3 1.4 Minor
    23/05 AM 3.8 1.3 1.4 Minor

    &&

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