39.0283’ N, 74.8017’ W

Nummy Island, Grassy Sound Channel, NJ

71°
H 83°
L 72°
SW
7mph
High tide
7:11 am

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

Day Sky High / Low Precip Wind Humidity
Wed
Sep 9
Partly Cloudy
Close Hourly
83º / 72º 2% SSW 17 mph 74%
6am Mostly Cloudy 71º 2% SW 7 mph 89%
7am Mostly Cloudy 70º 2% SW 7 mph 91%
8am Partly Cloudy 72º 2% SW 8 mph 87%
9am Partly Cloudy 75º 2% SW 10 mph 80%
10am Partly Cloudy 77º 1% SW 11 mph 73%
11am Mostly Sunny 79º 1% SW 11 mph 68%
12pm Mostly Sunny 80º 1% SSW 12 mph 66%
1pm Sunny 82º 0% SSW 13 mph 61%
2pm Sunny 81º 0% S 14 mph 64%
3pm Sunny 82º 1% S 16 mph 64%
4pm Sunny 81º 1% S 17 mph 66%
5pm Sunny 81º 1% S 17 mph 66%
6pm Sunny 80º 2% SSW 17 mph 67%
7pm Sunny 78º 2% SSW 17 mph 69%
8pm Mostly Clear 76º 2% SSW 16 mph 73%
9pm Clear 75º 2% SSW 16 mph 76%
10pm Clear 75º 3% SSW 16 mph 77%
11pm Clear 74º 3% SSW 16 mph 79%
Thu
Sep 10
Partly Cloudy
View Hourly
85º / 69º 13% WSW 15 mph 72%
12am Clear 74º 4% SSW 16 mph 79%
1am Clear 74º 4% SSW 15 mph 82%
2am Mostly Clear 74º 4% SSW 16 mph 82%
3am Mostly Clear 74º 4% SW 15 mph 83%
4am Mostly Clear 74º 4% SW 15 mph 82%
5am Clear 74º 4% SW 14 mph 81%
6am Partly Cloudy 74º 5% SW 14 mph 82%
7am Partly Cloudy 73º 5% SW 15 mph 83%
8am Partly Cloudy 75º 6% SW 15 mph 82%
9am Mostly Cloudy 77º 6% WSW 14 mph 77%
10am Mostly Cloudy 78º 4% WSW 14 mph 74%
11am Mostly Sunny 81º 3% WSW 13 mph 69%
12pm Partly Cloudy 82º 2% WSW 13 mph 67%
1pm Partly Cloudy 83º 1% W 12 mph 67%
2pm Partly Cloudy 83º 1% W 10 mph 67%
3pm Partly Cloudy 84º 5% W 11 mph 66%
4pm Partly Cloudy 84º 9% W 10 mph 68%
5pm Partly Cloudy 83º 8% W 9 mph 68%
6pm Partly Cloudy 83º 13% W 8 mph 70%
7pm Mostly Cloudy 81º 16% W 7 mph 74%
8pm Showers 79º 36% W 5 mph 81%
9pm Isolated Thunderstorms 77º 32% W 5 mph 86%
10pm Scattered Thunderstorms 76º 55% W 4 mph 89%
11pm Scattered Thunderstorms 75º 59% WNW 5 mph 90%
Fri
Sep 11
AM Showers
View Hourly
78º / 68º 48% NE 10 mph 72%
12am Scattered Thunderstorms 75º 49% WNW 5 mph 91%
1am Scattered Thunderstorms 74º 42% WNW 4 mph 94%
2am Few Showers 73º 33% NW 5 mph 94%
3am Showers 73º 42% NW 5 mph 94%
4am Showers 72º 52% NW 6 mph 93%
5am Showers 71º 56% NNW 5 mph 93%
Sat
Sep 12
Partly Cloudy 78º / 70º 24% ESE 13 mph 71%
Sun
Sep 13
Thunderstorms 81º / 67º 65% SW 9 mph 88%
Mon
Sep 14
Partly Cloudy 77º / 66º 19% N 10 mph 73%
Tue
Sep 15
Partly Cloudy 76º / 68º 12% SE 11 mph 79%
Wed
Sep 16
Isolated Thunderstorms 81º / 68º 34% SSW 10 mph 76%

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

* Playback displays weather for the past 6 hours.

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

Today
High : 81ºF
SW wind 5 to 8 kt becoming S 10 to 15 kt in the afternoon. Mostly cloudy through mid morning, then gradual clearing. Seas around 1 ft.
Tonight
Low : 74ºF
SSW wind around 15 kt, with gusts as high as 25 kt. Mostly clear. Seas 1 to 2 ft.
Thursday
High : 88ºF
WSW wind 10 to 15 kt, with gusts as high as 20 kt. Mostly sunny. Seas 1 to 2 ft.
Thursday Night
Low : 68ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Seas around 1 ft.
Friday
High : 80ºF
N wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. A chance of showers before 8am. Seas around 1 ft.
Friday Night
Low : 68ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Saturday
High : 79ºF
SE wind 5 to 10 kt. Partly sunny. Seas 1 ft or less.
Saturday Night
Low : 73ºF
SSE wind 5 to 10 kt. A chance of showers. Seas around 1 ft.
Sunday
High : 80ºF
Variable winds 5 kt or less. A chance of showers. Seas around 1 ft.

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

Loading Map...
Loading Buoy Data...

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

    WednesdayThursdayFriday
    Wind Speed (MPH) 71114171616141410845
    10am2pm6pm10pm2am6am10am2pm6pm10pm2am6am
    MPH 71114171616141410845
    DIR SWSWSSSWSSWSSWSWWSWWWWNW

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

    As Of: 45 minutes ago

    • 71ºF
    • 71ºF
    • 7mph
    • 0º (SW)
    • 7mph
    • Mostly Cloudy
    • 10mi
    • 30.24"
    • 89%
    • 0ºF

    The weather right now in Nummy Island, Grassy Sound Channel, NJ is Mostly Cloudy. The current temperature is 71°F, and the expected high and low for today, Wednesday, September 9, 2026, are 83° high temperature and 72°F low temperature. The wind is currently blowing at 7 miles per hour, and coming from the Southwest. The wind is gusting to 7 mph. With the wind and the atmosphere the temperature feels like 71° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 89 percent, and air pressure at 30.24 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 3:16am Wed Sep 9 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 2 PM EDT THURSDAY...

    WHAT: Southwest winds 15 to 25 kt with gusts up to 30 kt and
    seas 3 to 6 ft expected.

    WHERE: Coastal waters from Sandy Hook to Manasquan Inlet NJ
    out 20 NM, 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 and Coastal waters from Great Egg
    Inlet to Cape May NJ out 20 NM.

    WHEN: From 4 PM this afternoon to 2 PM EDT Thursday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&