Marine Weather and Tide Forecast for Slaughter Beach, DE
 | Sunrise 7:09 AM Sunset 6:26 PM Moonrise 9:21 AM Moonset 6:45 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
ANZ431 Delaware Bay Waters South Of East Point Nj To Slaughter Beach De- 918 Am Edt Tue Oct 13 2026
Today - W winds around 5 kt, becoming S this afternoon. Seas around 2 ft.
Tonight - SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Wed - SW winds 5 to 10 kt. Seas around 2 ft.
Wed night - W winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas around 2 ft. A chance of showers.
Thu - NE winds 10 to 15 kt. Seas around 2 ft. A chance of showers in the morning.
Thu night - SE winds around 10 kt. Seas around 2 ft. Showers likely after midnight.
Fri - S winds 10 to 15 kt, becoming sw 20 to 25 kt in the afternoon. Seas 2 to 3 ft. A chance of showers in the morning, then showers likely in the afternoon.
Fri night - NW winds 25 to 35 kt, becoming 30 to 35 kt after midnight. Seas 4 to 6 ft. Showers likely in the evening.
Sat - NW winds 25 to 30 kt. Seas 4 to 6 ft.
Sat night - NW winds 25 to 30 kt, diminishing to 15 to 20 kt after midnight. Seas 4 to 6 ft, subsiding to 2 to 4 ft after midnight.
ANZ400 918 Am Edt Tue Oct 13 2026
Synopsis for the coastal waters from sandy hook nj to fenwick island de and for delaware bay - High pressure builds in tonight into Tuesday followed by a cold front crossing our area on Wednesday. A much stronger cold front is then forecast to sweep across our area on Friday.
7 Day Forecast for Marine Location Near Slaughter Beach, DE
NEW! Add second zone forecast
| Mispillion River entrance Click for Map Tue -- 05:20 AM EDT 0.39 feet Low Tide Tue -- 07:08 AM EDT Sunrise Tue -- 10:20 AM EDT Moonrise Tue -- 11:20 AM EDT 5.66 feet High Tide Tue -- 06:08 PM EDT 0.40 feet Low Tide Tue -- 06:25 PM EDT Sunset Tue -- 07:45 PM EDT Moonset Tue -- 11:42 PM EDT 4.38 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Mispillion River entrance, Delaware Bay, Delaware, Tide feet
| 12 am |
| 4.4 |
| 1 am |
| 3.8 |
| 2 am |
| 2.9 |
| 3 am |
| 1.8 |
| 4 am |
| 0.9 |
| 5 am |
| 0.4 |
| 6 am |
| 0.5 |
| 7 am |
| 1.3 |
| 8 am |
| 2.5 |
| 9 am |
| 3.9 |
| 10 am |
| 5 |
| 11 am |
| 5.6 |
| 12 pm |
| 5.5 |
| 1 pm |
| 5 |
| 2 pm |
| 4 |
| 3 pm |
| 2.8 |
| 4 pm |
| 1.6 |
| 5 pm |
| 0.8 |
| 6 pm |
| 0.4 |
| 7 pm |
| 0.6 |
| 8 pm |
| 1.4 |
| 9 pm |
| 2.5 |
| 10 pm |
| 3.5 |
| 11 pm |
| 4.2 |
| Delaware Bay entrance channel (depth 5 ft) Click for Map Flood direction 318 true Ebb direction 158 true Tue -- 03:25 AM EDT -2.56 knots Max Ebb Tue -- 07:07 AM EDT Sunrise Tue -- 07:18 AM EDT 0.00 knots Slack Tue -- 09:26 AM EDT 1.28 knots Max Flood Tue -- 10:18 AM EDT Moonrise Tue -- 12:01 PM EDT -0.00 knots Slack Tue -- 03:52 PM EDT -2.64 knots Max Ebb Tue -- 06:24 PM EDT Sunset Tue -- 07:45 PM EDT Moonset Tue -- 08:08 PM EDT 0.00 knots Slack Tue -- 10:00 PM EDT 0.88 knots Max Flood Tide / Current data from XTide NOT FOR NAVIGATION |
Delaware Bay entrance channel (depth 5 ft), Delaware Current, knots
| 12 am |
| -0.2 |
| 1 am |
| -1.1 |
| 2 am |
| -2 |
| 3 am |
| -2.5 |
| 4 am |
| -2.5 |
| 5 am |
| -2 |
| 6 am |
| -1.3 |
| 7 am |
| -0.3 |
| 8 am |
| 0.7 |
| 9 am |
| 1.2 |
| 10 am |
| 1.2 |
| 11 am |
| 0.7 |
| 12 pm |
| 0 |
| 1 pm |
| -0.8 |
| 2 pm |
| -1.7 |
| 3 pm |
| -2.4 |
| 4 pm |
| -2.6 |
| 5 pm |
| -2.4 |
| 6 pm |
| -1.8 |
| 7 pm |
| -1 |
| 8 pm |
| -0.1 |
| 9 pm |
| 0.6 |
| 10 pm |
| 0.9 |
| 11 pm |
| 0.7 |
Area Discussion for Philadelphia/Mount Holly, PA
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FXUS61 KPHI 131740 AFDPHI
Area Forecast Discussion National Weather Service Mount Holly NJ 140 PM EDT Tue Oct 13 2026
WHAT HAS CHANGED
Updated Key Message 1 and the Aviation Section for the 18Z TAFs.
KEY MESSAGES
1. Surge of warmth and humidity through Wednesday ahead of a cold front.
2. A strong cold front Friday brings an end to the warmth as much colder air arrives for the weekend.
DISCUSSION
KEY MESSAGE 1...Surge of warmth and humidity through Wednesday ahead of a cold front.
A frontal zone draped to our north today will result in surface low pressure riding along it through Wednesday, pulling a cold front across our area by later Wednesday. Ahead of this feature, southerly flow will boost the low-level warm air advection regime, resulting in much warmer air surging into our area through Wednesday. High temperatures will be in the upper 70s to around 80 degrees for many areas today. Wednesday's highs are forecast to mainly range in the low to mid 80s, with even some upper 80s to near 90 degrees possible over southern Delaware.
In addition, dew points will increase back through the 60s into Wednesday. This will result in a much more humid feel over the next couple days, with it being the most humid on Wednesday (heat index values should approach 90F for areas from about Philadelphia south and east; away from the coast). There does not appear to be much in the way of forcing, therefore just a slight chance (less than 25%) for showers is expected. After the front moves through, cooler air will briefly return on Thursday.
KEY MESSAGE 2...A strong cold front Friday brings an end to the warmth as much colder air arrives for the weekend.
A potent upper-level trough is forecast to arrive across the East during Friday, then gradually lift out over the weekend. This will drive surface low pressure just north of our area Friday with an associated strong cold front sweeping through.
A mild and increasingly moist air mass ahead of this feature will provide some instability as the strong cold front arrives on Friday.
Large scale forcing for ascent will increase with the arrival of the robust upper-level trough and cold front, therefore showers will increase for a time (peaking on Friday). Some showers though look to develop Thursday night ahead of the main cold front. Some thunderstorms cannot be ruled out given the strength of the system, however this will ultimately depend on the magnitude of the instability and timing of the cold front. In the wake of the cold front, strong cold air advection occurs and this will result in much colder temperatures for the weekend. As of now, high temperatures both Saturday and Sunday look to struggle to get out of the 50s (colder in the higher terrain). A gusty wind Saturday due to cold air advection and a tightened pressure gradient will add to the chill. If the wind drops off enough Saturday night, some frost or freezing temperatures will become a concern for portions of our area. The air mass then starts to modify early next week.
AVIATION /18Z TUESDAY THROUGH SUNDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.
Rest of Today... VFR with mainly clear skies. Southwest winds around 10 kt. High confidence.
Tonight...VFR with mostly clear skies. A period of LLWS is possible mainly between 00Z-08Z. West-southwest winds 4-8 kt.
High confidence.
Wednesday...VFR with increasing clouds after daybreak. West winds around 5-10 kt early, increasing to 10-15 kt in the afternoon. A period of showers is possible from west to east, but confidence is not high enough to include in TAFs at this time. Moderate-high confidence overall.
Outlook...
Wednesday night...VFR. Slight chance for brief period of sub- VFR conditions Wednesday night from showers.
Thursday and Friday...A period of sub-VFR conditions possible with showers. Gusty southwest to west winds on Friday.
Saturday...VFR. Gusty northwest winds.
MARINE
No marine headlines are in effect through Wednesday. South- southwest winds are expected to increase to around 15-20 kt later this afternoon through tonight with gusts up to 22-23 kt possible. Winds will become west around 10-15 kt on Wednesday following a cold frontal passage. Seas around 2-4 feet. Fair weather expected outside of gusty winds.
Outlook...
Wednesday night through Thursday...No marine hazards are anticipated.
Friday and Saturday...Small Craft Advisory conditions probable, with a period of gale-force wind gusts possible.
PHI WATCHES/WARNINGS/ADVISORIES
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.
Area Forecast Discussion National Weather Service Mount Holly NJ 140 PM EDT Tue Oct 13 2026
WHAT HAS CHANGED
Updated Key Message 1 and the Aviation Section for the 18Z TAFs.
KEY MESSAGES
1. Surge of warmth and humidity through Wednesday ahead of a cold front.
2. A strong cold front Friday brings an end to the warmth as much colder air arrives for the weekend.
DISCUSSION
KEY MESSAGE 1...Surge of warmth and humidity through Wednesday ahead of a cold front.
A frontal zone draped to our north today will result in surface low pressure riding along it through Wednesday, pulling a cold front across our area by later Wednesday. Ahead of this feature, southerly flow will boost the low-level warm air advection regime, resulting in much warmer air surging into our area through Wednesday. High temperatures will be in the upper 70s to around 80 degrees for many areas today. Wednesday's highs are forecast to mainly range in the low to mid 80s, with even some upper 80s to near 90 degrees possible over southern Delaware.
In addition, dew points will increase back through the 60s into Wednesday. This will result in a much more humid feel over the next couple days, with it being the most humid on Wednesday (heat index values should approach 90F for areas from about Philadelphia south and east; away from the coast). There does not appear to be much in the way of forcing, therefore just a slight chance (less than 25%) for showers is expected. After the front moves through, cooler air will briefly return on Thursday.
KEY MESSAGE 2...A strong cold front Friday brings an end to the warmth as much colder air arrives for the weekend.
A potent upper-level trough is forecast to arrive across the East during Friday, then gradually lift out over the weekend. This will drive surface low pressure just north of our area Friday with an associated strong cold front sweeping through.
A mild and increasingly moist air mass ahead of this feature will provide some instability as the strong cold front arrives on Friday.
Large scale forcing for ascent will increase with the arrival of the robust upper-level trough and cold front, therefore showers will increase for a time (peaking on Friday). Some showers though look to develop Thursday night ahead of the main cold front. Some thunderstorms cannot be ruled out given the strength of the system, however this will ultimately depend on the magnitude of the instability and timing of the cold front. In the wake of the cold front, strong cold air advection occurs and this will result in much colder temperatures for the weekend. As of now, high temperatures both Saturday and Sunday look to struggle to get out of the 50s (colder in the higher terrain). A gusty wind Saturday due to cold air advection and a tightened pressure gradient will add to the chill. If the wind drops off enough Saturday night, some frost or freezing temperatures will become a concern for portions of our area. The air mass then starts to modify early next week.
AVIATION /18Z TUESDAY THROUGH SUNDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.
Rest of Today... VFR with mainly clear skies. Southwest winds around 10 kt. High confidence.
Tonight...VFR with mostly clear skies. A period of LLWS is possible mainly between 00Z-08Z. West-southwest winds 4-8 kt.
High confidence.
Wednesday...VFR with increasing clouds after daybreak. West winds around 5-10 kt early, increasing to 10-15 kt in the afternoon. A period of showers is possible from west to east, but confidence is not high enough to include in TAFs at this time. Moderate-high confidence overall.
Outlook...
Wednesday night...VFR. Slight chance for brief period of sub- VFR conditions Wednesday night from showers.
Thursday and Friday...A period of sub-VFR conditions possible with showers. Gusty southwest to west winds on Friday.
Saturday...VFR. Gusty northwest winds.
MARINE
No marine headlines are in effect through Wednesday. South- southwest winds are expected to increase to around 15-20 kt later this afternoon through tonight with gusts up to 22-23 kt possible. Winds will become west around 10-15 kt on Wednesday following a cold frontal passage. Seas around 2-4 feet. Fair weather expected outside of gusty winds.
Outlook...
Wednesday night through Thursday...No marine hazards are anticipated.
Friday and Saturday...Small Craft Advisory conditions probable, with a period of gale-force wind gusts possible.
PHI WATCHES/WARNINGS/ADVISORIES
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| DRSD1 - Delaware Reserve, DE | 12 mi | 52 min | SSW 6 | 81°F | 29.95 | 61°F | ||
| LWSD1 - 8557380 - Lewes, DE | 15 mi | 52 min | SSE 4.1G | 78°F | 66°F | 29.97 | ||
| CMAN4 - 8536110 - Cape May, NJ | 19 mi | 52 min | SSE 8.9G | 71°F | 66°F | 29.98 | ||
| SJSN4 - 8537121 - Ship John Shoal, NJ | 25 mi | 52 min | SE 12G | 67°F | 66°F | 29.96 | ||
| 44084 | 32 mi | 56 min | 67°F | 2 ft | ||||
| OCIM2 - 8570283 - Ocean City Inlet, MD | 45 mi | 52 min | SSW 8.9G | 69°F | 67°F | 29.99 | ||
| DELD1 - 8551762 - Delaware City, DE | 46 mi | 52 min | SSE 6G | 76°F | 29.93 | |||
| 44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ | 47 mi | 42 min | S 9.7G | 67°F | 29.99 | 63°F | ||
| CA2 - 8571892 - Cambridge, MD | 48 mi | 52 min | SW 6G | 78°F | 68°F | 29.98 | ||
| CHCM2 - 8573927 - Chesapeake City, MD | 48 mi | 52 min | SW 5.1G | 79°F | 67°F | 29.94 | ||
| CXLM2 | 49 mi | 52 min | SW 5.1G |
Wind History for No Ports station near this location
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KDOV
Terminal Aerodrome Forecast (TAF) for KDOV
Wind History Graph: DOV
(wind in knots)
GEOS Local Image of Mid-Atlantic
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