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Port Jefferson Harbor entrance

Port Jefferson Harbor entrance Currents

The current is ebbing at 0.6 kt. Next slack water at 2:37 AM. Smooth water, SE wind at 6 kt with gusts to 13 kt. Thunderstorms right now.

Last Current - Ebb

11:25 PM

EDT

NNW

0.8 kt

1 hour, 35 minutes ago

Next Current - Slack

2:37 AM

EDT

1 hour, 36 minutes from now

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Following Current - Flood

6:01 AM

EDT

SSE

1.1 kt

5 hours from now

Today

🌊 Currents

Slack

2:37 AM

Flood

6:01 AM

SSE

1.1 kt

Slack

9:06 AM

Ebb

11:49 AM

NNW

0.8 kt

Slack

2:38 PM

Flood

6:05 PM

SSE

1.2 kt

Slack

9:11 PM

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Tomorrow

🌊 Currents

Ebb

12:13 AM

NNW

0.8 kt

Slack

3:22 AM

Flood

6:43 AM

SSE

1.2 kt

Slack

9:46 AM

Ebb

12:34 PM

NNW

0.9 kt

Slack

3:26 PM

Flood

6:48 PM

SSE

1.3 kt

Slack

9:52 PM

🌤️ Marine Weather

Tuesday - August 25, 2026

🌊 Currents

Ebb

12:54 AM

NNW

0.9 kt

Slack

4:04 AM

Flood

7:20 AM

SSE

1.3 kt

Slack

10:22 AM

Ebb

1:16 PM

NNW

0.9 kt

Slack

4:12 PM

Flood

7:27 PM

SSE

1.4 kt

Slack

10:28 PM

🌤️ Marine Weather

Wednesday - August 26, 2026

🌊 Currents

Ebb

1:33 AM

NNW

1.0 kt

Slack

4:44 AM

Flood

7:55 AM

SSE

1.4 kt

Slack

10:55 AM

Ebb

1:55 PM

NNW

1.0 kt

Slack

4:55 PM

Flood

8:05 PM

SSE

1.6 kt

Slack

11:04 PM

🌤️ Marine Weather

Thursday - August 27, 2026

🌊 Currents

Ebb

2:09 AM

NNW

1.1 kt

Slack

5:21 AM

Flood

8:30 AM

SSE

1.6 kt

Slack

11:28 AM

Ebb

2:33 PM

NNW

1.1 kt

Slack

5:37 PM

Flood

8:45 PM

SSE

1.7 kt

Slack

11:39 PM

🌤️ Marine Weather

Friday - August 28, 2026

🌊 Currents

Ebb

2:43 AM

NNW

1.1 kt

Slack

5:58 AM

Flood

9:07 AM

SSE

1.7 kt

Slack

12:02 PM

Ebb

3:08 PM

NNW

1.1 kt

Slack

6:19 PM

Flood

9:26 PM

SSE

1.8 kt

🌤️ Marine Weather

Saturday - August 29, 2026

🌊 Currents

Slack

12:16 AM

Ebb

3:16 AM

NNW

1.2 kt

Slack

6:35 AM

Flood

9:46 AM

SSE

1.9 kt

Slack

12:39 PM

Ebb

3:41 PM

NNW

1.2 kt

Slack

7:03 PM

Flood

10:09 PM

SSE

1.8 kt

🌤️ Marine Weather

7-Day Insights

Current Extremes

Fastest Flood

Sat, Aug 29

1.9 kt at 9:46 AM

Unusually fast

Fastest Ebb

Sat, Aug 29

1.2 kt at 3:16 AM

Unusually fast

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Peak Daily Currents

Fastest

Sat, Aug 29

1.9 kt max current

Faster than usual

Slowest

Sun, Aug 23

1.2 kt max current

Slower than usual