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Islesboro Harbor, NE of, Penobscot Bay

Islesboro Harbor, NE of, Penobscot Bay Currents

A marine warning is in force for this area. The current is ebbing at 0.2 kt. Next slack water at 4:54 AM. Current predictions are astronomical, so the weather in that warning can strengthen or weaken the actual flow.

Last Current - Ebb

11:59 PM

EDT

SSE

0.3 kt

2 hours, 12 minutes ago

Next Current - Slack

4:54 AM

EDT

2 hours, 42 minutes from now

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Following Current - Slack

9:28 AM

EDT

7 hours, 16 minutes from now

Today

🌊 Currents

Slack

4:54 AM

Slack

9:28 AM

Ebb

12:27 PM

SSE

0.3 kt

Slack

5:17 PM

Slack

9:50 PM

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Tomorrow

🌊 Currents

Ebb

12:52 AM

SSE

0.3 kt

Slack

5:42 AM

Slack

10:17 AM

Ebb

1:18 PM

SSE

0.4 kt

Slack

6:08 PM

Slack

10:42 PM

🌤️ Marine Weather

Saturday - October 10, 2026

🌊 Currents

Ebb

1:41 AM

SSE

0.3 kt

Slack

6:27 AM

Slack

10:59 AM

Ebb

2:05 PM

SSE

0.4 kt

Slack

6:54 PM

Slack

11:30 PM

🌤️ Marine Weather

Sunday - October 11, 2026

🌊 Currents

Ebb

2:26 AM

SSE

0.3 kt

Slack

7:10 AM

Slack

11:38 AM

Ebb

2:48 PM

SSE

0.4 kt

Slack

7:37 PM

🌤️ Marine Weather

Monday - October 12, 2026

🌊 Currents

Slack

12:13 AM

Ebb

3:09 AM

SSE

0.3 kt

Slack

7:53 AM

Slack

12:15 PM

Ebb

3:30 PM

SSE

0.3 kt

Slack

8:20 PM

🌤️ Marine Weather

Tuesday - October 13, 2026

🌊 Currents

Slack

12:55 AM

Ebb

3:52 AM

SSE

0.3 kt

Slack

8:37 AM

Slack

12:51 PM

Ebb

4:13 PM

SSE

0.3 kt

Slack

9:06 PM

🌤️ Marine Weather

Wednesday - October 14, 2026

🌊 Currents

Slack

1:34 AM

Ebb

4:35 AM

SSE

0.3 kt

Slack

9:23 AM

Slack

1:30 PM

Ebb

4:58 PM

SSE

0.3 kt

Slack

9:59 PM

🌤️ Marine Weather

7-Day Insights

Current Extremes

Fastest Ebb

Fri, Oct 9

0.4 kt at 1:18 PM

Unusually fast

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Peak Daily Currents

Fastest

Fri, Oct 9

0.4 kt max current

Unusually fast

Slowest

Thu, Oct 8

0.3 kt max current

Slower than usual

Nautical Charts for Islesboro Harbor, NE of, Penobscot Bay

Penobscot River

Penobscot Bay and Approaches

Bay of Fundy to Cape Cod