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Marine Weather and Tide Forecast for Henlopen Acres, DE

July 17, 2025 3:10 PM EDT (19:10 UTC)
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Sunrise 5:48 AM   Sunset 8:27 PM
Moonrise 11:10 PM   Moonset 12:06 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
ANZ454 Coastal Waters From Cape May Nj To Cape Henlopen De Out 20 Nm- 401 Am Edt Thu Jul 17 2025

Today - SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave detail: S 4 ft at 6 seconds.

Tonight - W winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: W 3 ft at 6 seconds.

Fri - NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: nw 3 ft at 6 seconds.

Fri night - W winds around 5 kt. Seas around 2 ft. Wave detail: W 2 ft at 6 seconds and se 1 foot at 8 seconds.

Sat - SE winds 5 to 10 kt. Seas around 2 ft. Wave detail: S 2 ft at 7 seconds. A chance of showers in the afternoon.

Sat night - S winds around 10 kt. Seas around 2 ft. Wave detail: S 2 ft at 4 seconds and se 2 ft at 8 seconds. A chance of showers and tstms.

Sun - W winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms.

Sun night - NW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. A chance of showers and tstms in the evening.

Mon - NE winds around 10 kt. Seas around 2 ft.

Mon night - E winds 5 to 10 kt. Seas around 2 ft.
winds and seas higher in and near tstms.
ANZ400 401 Am Edt Thu Jul 17 2025

Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay - A very warm and humid airmass will remain over the region today. A cold front will pass through the region late tonight into Friday, with high pressure building in briefly through Saturday. Another cold front approaches late in the weekend and will either move offshore or stall with high pressure returning briefly early next week. High pressure will shift offshore into the middle of the week.

7 Day Forecast for Marine Location Near Henlopen Acres, DE
   
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Tide / Current for Cape Henlopen, Delaware Bay, Delaware
  
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Cape Henlopen
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Thu -- 01:37 AM EDT     4.26 feet High Tide
Thu -- 05:49 AM EDT     Sunrise
Thu -- 07:52 AM EDT     0.01 feet Low Tide
Thu -- 01:05 PM EDT     Moonset
Thu -- 02:17 PM EDT     4.53 feet High Tide
Thu -- 08:23 PM EDT     Sunset
Thu -- 08:30 PM EDT     0.44 feet Low Tide
Thu -- 08:39 PM EDT     Last Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Cape Henlopen, Delaware Bay, Delaware does not exist in database. Press Edit above and select a valid nearby location.

Cape Henlopen, Delaware Bay, Delaware, Tide feet
12
am
3.6
1
am
4.2
2
am
4.2
3
am
3.8
4
am
3
5
am
2
6
am
1
7
am
0.2
8
am
0
9
am
0.4
10
am
1.2
11
am
2.2
12
pm
3.2
1
pm
4.1
2
pm
4.5
3
pm
4.4
4
pm
3.9
5
pm
3
6
pm
2
7
pm
1.1
8
pm
0.5
9
pm
0.5
10
pm
1
11
pm
1.7

Tide / Current for Delaware Bay Entrance, Delaware Current
  
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Delaware Bay Entrance
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Thu -- 12:14 AM EDT     1.38 knots Max Flood
Thu -- 03:14 AM EDT     -0.00 knots Slack
Thu -- 05:49 AM EDT     Sunrise
Thu -- 06:46 AM EDT     -1.39 knots Max Ebb
Thu -- 09:35 AM EDT     0.00 knots Slack
Thu -- 12:41 PM EDT     1.59 knots Max Flood
Thu -- 01:05 PM EDT     Moonset
Thu -- 03:57 PM EDT     -0.00 knots Slack
Thu -- 07:31 PM EDT     -1.34 knots Max Ebb
Thu -- 08:23 PM EDT     Sunset
Thu -- 08:39 PM EDT     Last Quarter
Thu -- 10:22 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Delaware Bay Entrance, Delaware Current does not exist in database. Press Edit above and select a valid nearby location.

Delaware Bay Entrance, Delaware Current, knots
12
am
1.4
1
am
1.3
2
am
0.8
3
am
0.2
4
am
-0.5
5
am
-1
6
am
-1.3
7
am
-1.4
8
am
-1.1
9
am
-0.5
10
am
0.3
11
am
1
12
pm
1.5
1
pm
1.6
2
pm
1.2
3
pm
0.6
4
pm
-0
5
pm
-0.6
6
pm
-1.1
7
pm
-1.3
8
pm
-1.3
9
pm
-0.9
10
pm
-0.3
11
pm
0.4

Area Discussion for Philadelphia/Mount Holly, PA
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FXUS61 KPHI 171856 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 256 PM EDT Thu Jul 17 2025

SYNOPSIS
A weak cold front will move through the region this evening, with high pressure temporarily building in its wake. A series of disturbances will bring unsettled weather this weekend, until a stronger cold front clears the area Sunday. High pressure will settle in to the area for the first part of next week.

NEAR TERM /THROUGH FRIDAY/
A hot and oppressively humid day is ongoing with widespread heat indices of 100-105 being observed across most of the region. A Heat Advisory remains in effect through this evening.

Relief is on the way however in the form of a cold front marching across Pennsylvania at this hour. This front could also trigger a few showers and thunderstorms this afternoon and into the evening. However, the forcing isn't overtly strong, and while we have around 3500-4500 J/KG of CAPE, shear isn't anything to write home about, with effective bulk shear around 20-25 kt over our area. Mid-level lapse rates are quite meager as well, only around 6-6.5 C/Km. If something could get organized, a strong to severe thunderstorm can't be ruled out with the amount of moist and unstable air in place. Steep low- level lapse rates could also aid in stronger downdrafts.
Overall, the threat is rather marginal given the limiting factors in play, and a MARGINAL (1/5) risk is in place for the entire area. PoPs range from 20-40% along and west of the I-95 corridor and about 15-30% south and east. Main threat would be damaging wind gusts from about 4 PM to 9 or 10 PM.

The cold front should swing through tonight with skies clearing out some and humid air being swept out of the region. It starts to feel more comfortable tonight as dew points fall quickly in the wake of the front. Lows generally range from the upper 60s to low to mid 70s. Areas in the Poconos could even get down into the 50s.

While the cold front clears our area overnight, it will stall out just to our south and east. This could result in more clouds and a few showers/isolated thunderstorms across the Delmarva peninsula and far South Jersey, areas that are in closer proximity to the stalled boundary. Not expecting any severe or hydro threats however. Elsewhere, it will be a rather quiet day and much more comfortable than today as dew points will be in the low to mid 60s for most spots, and even potentially into the 50s north of I-78. Highs are more seasonable, or even a few degrees below normal for tomorrow-in the low to mid 80s.

SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY NIGHT/
An upper-low initially over portions of the Hudson Bay and northern Quebec will shift slowly southeastward through the period. With ridging centered over the southeastern US, our region will initially have weak zonal flow aloft and neutral heights. Friday night, an area of low pressure passing to the south could continue to bring lingering chances for showers across portions of the Delmarva, but high pressure over New England should keep most of the area dry. Friday night lows should generally be in the mid-upper 60s, with a few low 70s possible, outside of the Poconos where temperatures could fall into the upper 50s.

A subtle shortwave embedded in the zonal flow regime should pass through the area on Saturday. As the surface high shifts east off of the coast, shower and storm chances will increase across our entire area. As of right now, the greatest chance appears to be from Saturday afternoon into much of Saturday night. Instability looks to be quite limited with this system, so severe weather is not anticipated at this time. However, there will be enough moisture to work with to support at least some potential for excessive rainfall. As such, the Weather Prediction Center has introduced a Marginal Risk (1 of 4) across most of our area for flash flooding.

As the upper-low shifts southeast through the weekend, it should become more of an open trough with the axis pivoting through northern New England Sunday night. A surface cold front will approach the area from the northwest by Sunday evening.
Scattered showers and storms will be possible across much of the area during the afternoon and evening hours ahead of the front.
Models are hinting at some instability and wind shear that could lead to some severe potential, so this will need to be monitored in the coming days.

The cold front appears likely to bring in a much more pleasant airmass. While it may not drop temperatures too much, it should help with the high moisture content which has contributed to the oppressive nature of the recent heat.

LONG TERM /MONDAY THROUGH THURSDAY/
With high pressure over the area and the recent frontal passage having reduced both temperatures and dewpoints across the area, Monday and Tuesday should both be quite pleasant. Partly to mostly clear skies and fairly light winds are expected.
Afternoon highs look to be in the low-mid 80s both days, with overnight lows generally in the low 60s.

While no major storm systems are anticipated in the extended period, it may become slightly more unsettled Wednesday into Thursday, with at least low chances for afternoon storms returning. In addition, we will likely see temperatures start to warm again, with most locations seeing highs approaching 90 again by Thursday.

AVIATION /19Z THURSDAY THROUGH TUESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today...Primarily VFR, though brief restrictions possible as scattered to isolated showers and thunderstorms develop later this afternoon. Added VCTS groups to KRDG/KABE/KTTN for a few hours this afternoon, with lesser chances at other terminals, where thunder was left out of the TAFs. 30-40% chance of SHRA/TSRA at KRDG/KTTN/KABE and 15-25% elsewhere. Winds out of the southwest 10-15 kt gusting 20- 25 kt. Moderate confidence.

Tonight...VFR with decreasing clouds. Southwest winds gradually becoming northwest overnight around 5-10 kt following frontal passage. High confidence.

Friday...VFR. Northwest winds 5-10 kt. High confidence.

Outlook...

Friday night...VFR. No significant weather expected.

Saturday through Sunday...Sub-VFR conditions will be possible at times in scattered showers and storms.

Sunday night through Tuesday...VFR. No significant weather expected.

MARINE
No marine headlines in place through Friday. Winds out of the southwest through this evening before becoming northwesterly overnight. Wind speeds of around 10-20 kt. Seas 3 to 4 feet. A few thunderstorms possible, especially north of Little Egg Inlet, this evening.

Outlook...

No marine headlines anticipated. Winds are expected to remain below 25 kt with seas remaining below 5 ft. Scattered showers and storms will be possible Saturday and Sunday.

Rip Currents...

For today, southwest winds increase to 15-25 mph with breaking waves around 1-3 feet and a building southerly 3-4 foot swell around 6-7 seconds. As a result, have upgraded Cape May and Atlantic County beaches to MODERATE due to more perpendicular swell and have maintained a LOW risk for rip currents for the remainder of the Jersey Shore and Delaware Beaches.

For Friday, northwest winds around 5-10 mph with breaking waves around 1-2 feet and a southerly 2 foot swell around 6-7 seconds.
As a result, have maintained a LOW risk for rip currents at all beaches.

Rip currents occur often in the vicinities of jetties and piers and the speed of the currents are generally maximized at low tides.

For specific beach forecasts, visit weather.gov/beach/phi

PHI WATCHES/WARNINGS/ADVISORIES
PA...Heat Advisory until 8 PM EDT this evening for PAZ060>062-070- 071-101>106.
NJ...Heat Advisory until 8 PM EDT this evening for NJZ001-007>010- 012>027.
DE...Heat Advisory until 8 PM EDT this evening for DEZ001>004.
MD...Heat Advisory until 8 PM EDT this evening for MDZ012-015-019- 020.
MARINE...None.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
LWSD1 - 8557380 - Lewes, DE 4 mi154 min 74°F29.94
CMAN4 - 8536110 - Cape May, NJ 14 mi52 minSSW 8G9.9 82°F 77°F29.92
BRND1 - 8555889 - Brandywine Shoal Light, DE 15 mi52 minW 16G18 87°F 29.93
44084 17 mi44 min 71°F2 ft
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ 29 mi40 minSSW 14G18 78°F 77°F29.9575°F
DRSD1 - Delaware Reserve, DE 30 mi100 minWSW 6 92°F 29.9276°F
OCIM2 - 8570283 - Ocean City Inlet, MD 31 mi52 minW 12G14 85°F 69°F29.95


Wind History for Lewes, DE
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KWWD CAPE MAY COUNTY,NJ 17 sm14 minWSW 1310 smClear91°F79°F67%29.91
KGED DELAWARE COASTAL,DE 18 sm16 minSW 15G2110 smA Few Clouds91°F75°F59%29.92

Weather Map
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GEOS Local Image of east us  
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Dover AFB, DE,





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