Marine Forecast
Illustrated map of Greenwood Lake

Marine forecast

Cape May NJ to Cape Henlopen

current wind
8 kt SSE
Gusts
11 kt
Seas
1.6 ft
Period
6 sec
Air
72°F

Observed Tue 3:00 PM | ANZ454

Gusts now
11 kt
Seas now
1.6 ft · 6 sec
Air
72°F
Water
66°F
72-hr peak
22 kt

In brief

At 3:00 pm EDT on Oct 13, 2026, NDBC station CMAN4 (Cape May, NJ, 16 miles away) measured wind from the SSE at 8 kt, gusting to 11 kt; buoy 44084 measured seas of 1.6 ft. The NWS forecast for Cape May NJ to Cape Henlopen issued at 9:18 am EDT on Oct 13, 2026 reads, for today: “W winds around 5 kt, becoming S early this afternoon, then increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 to 3 ft.”

Source: National Weather Service Mount Holly NJ forecast; NDBC observations

Wind forecast · ktPeak 22 kt

05101520253035Wed 14Thu 15Fri 1605101520253035Wed 14Thu 15Fri 16
Sustained GustOct 13-16 | EDT

Seas forecast · ftPeak 4 ft

01234Wed 14Thu 15Fri 1601234Wed 14Thu 15Fri 16
Oct 13-16 | EDT

NWS marine forecast

PeriodForecast
TodayW winds around 5 kt, becoming S early this afternoon, then increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 to 3 ft.
TonightSW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
WedSW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Wed NightSW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft.
ThuNE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Thu NightE winds around 10 kt, becoming SE after midnight. Seas 2 to 3 ft. A chance of showers after midnight.
FriS winds 15 to 20 kt, becoming SW 20 to 25 kt in the afternoon. Seas 3 to 5 ft. A chance of showers in the morning, then showers likely in the afternoon.
Fri NightNW winds 25 to 35 kt, becoming around 30 kt after midnight. Seas 5 to 8 ft. Showers likely in the evening.
SatNW winds 30 to 35 kt. Seas 6 to 8 ft.
Sat NightNW winds 25 to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 5 to 7 ft.

Issued Tue 9:18 AM by Mount Holly NJ (product CWFPHI).

TimeWindGustSeasWater
Tue 3:00 PM 8 kt SSE 11 kt — 66°F
Tue 2:54 PM 9 kt S 10 kt — 66°F
Tue 1:54 PM 6 kt SSE 11 kt — 66°F
Tue 12:54 PM 5 kt SW 6 kt — 66°F
Tue 11:54 AM 5 kt SW 5 kt — 66°F
Tue 10:54 AM 4 kt WSW 4 kt — 66°F
Tue 9:54 AM 5 kt SW 6 kt — 66°F
Tue 8:54 AM 4 kt WSW 5 kt — 66°F
Tue 7:54 AM 4 kt W 5 kt — 66°F
Tue 6:54 AM 4 kt WNW 5 kt — 66°F
Tue 5:54 AM 4 kt W 7 kt — 66°F
Tue 4:54 AM 4 kt W 5 kt — 66°F

Observed Tue 3:00 PM at NDBC buoy CMAN4 (Cape May, NJ), 16.2 miles away. Seas from buoy 44084 (Bethany Beach, DE (263)), 23.0 miles away, at Tue 2:26 PM.

What is the marine forecast for Cape May NJ to Cape Henlopen today?

Today: W winds around 5 kt, becoming S early this afternoon, then increasing to 10 to 15 kt with gusts up to 20 kt late. Seas 2 to 3 ft.

Is there a small craft advisory for Cape May NJ to Cape Henlopen?

No advisories, warnings or watches are in effect for NWS zone ANZ454 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.

How high are the waves at Cape May NJ to Cape Henlopen right now?

Seas are running 1.6 ft at a 6-second period, measured at NDBC buoy CMAN4 Tue 3:00 PM, 16.2 miles from this zone. The forecast peaks at 4.0 ft Fri 9 AM.

What is the water temperature at Cape May NJ to Cape Henlopen?

The nearest buoy read 66°F (19°C) at Tue 3:00 PM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.

What do the wind speeds in knots mean?

One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.

Where does this forecast come from?

The forecast text is the National Weather Service's own marine bulletin for zone ANZ454, issued by Mount Holly NJ, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.

Forecast: NOAA/NWS product CWFPHI, issued Tue 9:18 AM. Observations: NOAA National Data Buoy Center station CMAN4, read Tue 3:00 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.