Coastal Waters Forecast
Issued by NWS Upton, NY
Issued by NWS Upton, NY
958 FZUS51 KOKX 180936 CWFOKX Coastal Waters Forecast National Weather Service New York NY 536 AM EDT Tue Aug 18 2026 Montauk Point NY to Sandy Hook NJ out 60 nm offshore, including Long Island Sound, the Long Island Bays, and New York Harbor ANZ300-182215- 536 AM EDT Tue Aug 18 2026 .Synopsis for the Long Island and Connecticut coastal waters... Coastal low pressure continues to exit to the northeast today, with a weak trough lingering over the area. A cold front then moves through Wednesday night and stalls over or near the area through the weekend. Multiple waves of low pressure will move along the stalled front. $$ ANZ350-182215- Moriches Inlet NY to Montauk Point NY out 20 NM- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SW around 5 kt late. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. Slight chance of showers late. .TONIGHT...SW winds around 5 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds. Slight chance of showers in the evening. .WED...W winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at 9 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 ft at 2 seconds. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds. Chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds. Showers likely. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. $$ ANZ353-182215- Fire Island Inlet NY to Moriches Inlet NY out 20 NM- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming W around 5 kt early this afternoon, then becoming SW late. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. Slight chance of showers late. .TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SW 1 ft at 2 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 ft at 4 seconds. Chance of showers and slight chance of tstms in the afternoon. .THU NIGHT...S winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds. Showers likely. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Chance of showers. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely. Winds and seas may be higher in and near tstms. $$ ANZ355-182215- Sandy Hook NJ to Fire Island Inlet NY out 20 NM- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming W around 5 kt early this afternoon, then becoming S around 5 kt late. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds. Slight chance of showers this morning. Slight chance of showers late. .TONIGHT...SW winds around 5 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 9 seconds. .THU...NW winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 ft at 4 seconds. Slight chance of showers in the morning, then chance of showers and slight chance of tstms in the afternoon. .THU NIGHT...S winds 5 to 10 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and E 1 ft at 2 seconds. Showers likely, mainly in the evening. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. Winds and seas may be higher in and near tstms. $$ ANZ332-182215- Long Island Sound East of the Mouth of the Connecticut River- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SW this afternoon. Seas 1 to 2 ft. Wave Detail: SE 1 ft at 7 seconds. Slight chance of showers late. .TONIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail: SE 1 ft at 7 seconds. Slight chance of showers in the evening. .WED...W winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: E 1 ft at 7 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 ft at 2 seconds and E 1 ft at 7 seconds. .THU...W winds around 5 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 6 seconds. Chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 1 ft or less. Wave Detail: SE 1 ft at 7 seconds. Chance of showers in the evening. .FRI...NE winds around 5 kt. Seas 1 ft or less. .FRI NIGHT...E winds around 5 kt. Seas 1 ft or less. .SAT...E winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Showers likely. $$ ANZ331-182215- Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SW this afternoon. Seas 1 ft or less. Slight chance of showers late. .TONIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 1 ft or less. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW around 5 kt in the afternoon. Seas 1 ft or less. .WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 ft or less. Wave Detail: SW 1 ft at 2 seconds. .THU...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 ft or less. Chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas 1 ft or less. Chance of showers in the evening. .FRI...NE winds around 5 kt. Seas 1 ft or less. .FRI NIGHT...E winds around 5 kt. Seas 1 ft or less. .SAT...E winds 5 to 10 kt. Seas 1 ft or less. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas 1 ft or less. Showers likely. $$ ANZ335-182215- Long Island Sound West of New Haven CT/Port Jefferson NY- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SW this afternoon. Seas 1 ft or less. Chance of showers early this morning. Slight chance of showers this afternoon. .TONIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 1 ft or less. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 ft or less. .WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 1 ft or less. .THU...NW winds around 5 kt, becoming SW in the afternoon. Seas 1 ft or less. Slight chance of showers in the morning, then chance of showers and slight chance of tstms in the afternoon. .THU NIGHT...W winds around 5 kt, becoming N after midnight. Seas 1 ft or less. Chance of showers. .FRI...NE winds 5 to 10 kt. Seas 1 ft or less. .FRI NIGHT...E winds around 5 kt. Seas 1 ft or less. Chance of showers. .SAT...E winds 5 to 10 kt. Seas 1 ft or less. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Seas 1 ft or less. Showers likely. Winds and seas may be higher in and near tstms. $$ ANZ338-182215- New York Harbor- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SW this afternoon. Waves 1 ft or less. Chance of showers, mainly this morning. .TONIGHT...SW winds around 5 kt, becoming NW after midnight. Waves 1 ft or less. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 ft or less. .WED NIGHT...W winds 5 to 10 kt. Waves 1 ft or less. .THU...NW winds around 5 kt, becoming S in the afternoon. Waves 1 ft or less. Slight chance of showers in the morning, then showers likely with slight chance of tstms in the afternoon. .THU NIGHT...SE winds around 5 kt, becoming NE after midnight. Waves 1 ft or less. Showers likely, mainly in the evening. .FRI...NE winds 5 to 10 kt. Waves 1 ft or less. .FRI NIGHT...E winds around 5 kt. Waves 1 ft or less. Chance of showers. .SAT...E winds 5 to 10 kt. Waves 1 to 2 ft. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Waves 1 to 2 ft. Chance of showers. Winds and waves may be higher in and near tstms. $$ ANZ340-182215- Peconic and Gardiners Bays- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming W this afternoon. Waves 1 ft or less. Slight chance of showers late. .TONIGHT...SW winds around 5 kt. Waves 1 ft or less. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW around 5 kt in the afternoon. Waves 1 ft or less. .WED NIGHT...SW winds around 5 kt. Waves 1 ft or less. .THU...W winds around 5 kt. Waves 1 ft or less. Chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Waves 1 ft or less. Showers likely. .FRI...NE winds around 5 kt. Waves 1 ft or less. Chance of showers. .FRI NIGHT...E winds around 5 kt. Waves 1 ft or less. .SAT...E winds 5 to 10 kt. Waves 1 ft or less. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft or less. Showers likely. $$ ANZ345-182215- South Shore Bays from Jones Inlet through Shinnecock Bay- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SW around 5 kt this afternoon. Waves 1 ft or less. Slight chance of showers late. .TONIGHT...SW winds around 5 kt, becoming W around 5 kt after midnight. Waves 1 ft or less. Slight chance of showers in the evening. .WED...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 ft or less. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. .THU...NW winds around 5 kt, becoming SW in the afternoon. Waves 1 ft or less. Slight chance of showers in the morning, then chance of showers and slight chance of tstms in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming N after midnight. Waves 1 ft or less. Showers likely. .FRI...NE winds 5 to 10 kt. Waves 1 ft or less. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Waves 1 ft or less. Chance of showers. .SAT...E winds 5 to 10 kt with gusts up to 20 kt. Waves 1 ft or less. Chance of showers. .SAT NIGHT...E winds 5 to 10 kt. Waves 1 ft or less. Showers likely. Winds and waves may be higher in and near tstms. $$ ANZ380-182215- Waters from Moriches Inlet NY to Montauk Point NY from 20 to 60 nm- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds 5 to 10 kt, becoming NW late. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. .TONIGHT...SW winds around 5 kt. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds and E 2 ft at 9 seconds. Slight chance of showers in the evening. .WED...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and E 2 ft at 9 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 ft at 3 seconds. .THU...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. Chance of showers in the afternoon. .THU NIGHT...SW winds around 5 kt, becoming W after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 ft at 4 seconds. Showers likely. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Chance of showers. .SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Chance of showers. .SAT NIGHT...SE winds around 10 kt. Seas around 3 ft. Showers likely. $$ ANZ383-182215- Waters from Fire Island Inlet NY to Moriches Inlet NY from 20 to 60 nm- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SE around 5 kt late. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds. .TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .WED...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds. .WED NIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. .THU...W winds 5 to 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds. Chance of showers and slight chance of tstms in the afternoon. .THU NIGHT...S winds around 5 kt, becoming E after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 ft at 3 seconds. Showers likely. .FRI...NE winds around 10 kt. Seas around 2 ft. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Chance of showers. .SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely. .SAT NIGHT...SE winds around 10 kt. Seas around 3 ft. Showers likely. Winds and seas may be higher in and near tstms. $$ ANZ385-182215- Waters from Sandy Hook NJ to Fire Island Inlet NY from 20 to 60 nm- 536 AM EDT Tue Aug 18 2026 .TODAY...N winds around 5 kt, becoming SE around 5 kt late. Seas around 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TONIGHT...SW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .WED...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 10 seconds. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .THU...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds. Slight chance of showers in the morning, then chance of showers and slight chance of tstms in the afternoon. .THU NIGHT...S winds around 5 kt, becoming E after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 ft at 3 seconds. Showers likely. .FRI...NE winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Chance of showers. .SAT...E winds around 10 kt. Seas 2 to 3 ft. Showers likely. .SAT NIGHT...SE winds 5 to 10 kt. Seas around 3 ft. Showers likely. Winds and seas may be higher in and near tstms. $$