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Boston Harbor (Deer Island Light)

Boston Harbor (Deer Island Light) Currents

The current is ebbing at 0.8 kt. Next slack water at 2:40 AM. Smooth water, NE wind at 4 kt with gusts to 8 kt. Fog right now.

Last Current - Ebb

12:20 AM

EDT

ESE

1.0 kt

52 minutes ago

Next Current - Slack

2:40 AM

EDT

1 hour, 27 minutes from now

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Following Current - Flood

5:51 AM

EDT

0.9 kt

4 hours, 38 minutes from now

Today

🌊 Currents

Ebb

12:20 AM

ESE

1.0 kt

Slack

2:40 AM

Flood

5:51 AM

0.9 kt

Slack

8:13 AM

Ebb

12:21 PM

ESE

0.7 kt

Slack

2:33 PM

Flood

6:01 PM

0.9 kt

Slack

8:23 PM

🌤️ Marine Weather

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Tomorrow

🌊 Currents

Ebb

1:02 AM

ESE

1.0 kt

Slack

3:27 AM

Flood

6:39 AM

1.0 kt

Slack

9:04 AM

Ebb

1:00 PM

ESE

0.8 kt

Slack

3:24 PM

Flood

6:47 PM

0.9 kt

Slack

9:12 PM

🌤️ Marine Weather

Tuesday - August 25, 2026

🌊 Currents

Ebb

1:37 AM

ESE

1.1 kt

Slack

4:10 AM

Flood

7:21 AM

1.1 kt

Slack

9:54 AM

Ebb

1:33 PM

ESE

0.9 kt

Slack

4:14 PM

Flood

7:24 PM

1.0 kt

Slack

10:00 PM

🌤️ Marine Weather

Wednesday - August 26, 2026

🌊 Currents

Ebb

2:07 AM

ESE

1.1 kt

Slack

4:51 AM

Flood

7:59 AM

1.1 kt

Slack

10:42 AM

Ebb

2:09 PM

ESE

1.0 kt

Slack

5:01 PM

Flood

7:53 PM

1.0 kt

Slack

10:45 PM

🌤️ Marine Weather

Thursday - August 27, 2026

🌊 Currents

Ebb

2:39 AM

ESE

1.1 kt

Slack

5:29 AM

Flood

8:34 AM

1.2 kt

Slack

11:23 AM

Ebb

2:54 PM

ESE

1.1 kt

Slack

5:44 PM

Flood

8:16 PM

1.1 kt

Slack

11:26 PM

🌤️ Marine Weather

Friday - August 28, 2026

🌊 Currents

Ebb

3:17 AM

ESE

1.2 kt

Slack

6:07 AM

Flood

8:59 AM

1.2 kt

Slack

12:01 PM

Ebb

3:41 PM

ESE

1.2 kt

Slack

6:25 PM

Flood

8:49 PM

1.2 kt

🌤️ Marine Weather

Saturday - August 29, 2026

🌊 Currents

Slack

12:05 AM

Ebb

3:56 AM

ESE

1.3 kt

Slack

6:45 AM

Flood

9:20 AM

1.3 kt

Slack

12:36 PM

Ebb

4:22 PM

ESE

1.3 kt

Slack

7:06 PM

Flood

9:29 PM

1.3 kt

🌤️ Marine Weather

7-Day Insights

Current Extremes

Fastest Flood

Sat, Aug 29

1.3 kt at 9:20 AM

Typical

Fastest Ebb

Sat, Aug 29

1.3 kt at 3:56 AM

Faster than usual

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Peak Daily Currents

Fastest

Sat, Aug 29

1.3 kt max current

Typical

Slowest

Sun, Aug 23

1.0 kt max current

Slower than usual