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Cos Cob Harbor

Cos Cob Harbor Tides

The tide is 3.1' and falling: next low 0.2' at 4:09 AM. SW wind at 15 kt with gusts to 24 kt. Waves on the open water nearby are about 0.8'. It could be calmer here.

Last Tide - High

7.8'

9:44 PM

EDT

3 hours, 43 minutes ago

Next Tide - Low

0.2'

4:09 AM

EDT

2 hours, 41 minutes from now

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☀️

Sunrise

6:58 AM

EDT

5 hours, 30 minutes from now

🌘

Moonrise

4:43 AM

EDT

Waning Crescent · 6%

3 hours, 15 minutes from now

Today

🌊 Tides

Low

4:09 AM

0.2'

High

10:11 AM

8.2'

Low

4:36 PM

0.1'

High

10:34 PM

7.9'

☀️ 6:58 AM ↑☀️ 6:24 PM ↓8.2'4.2'0.1'1236912369124:0910:114:3610:34

🌤️ Marine Weather

☀️ Sun

Rise

6:58 AM

Set

6:24 PM

🌘 Moon

Rise

4:43 AM

6%

Set

5:19 PM

4%

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Tomorrow

🌊 Tides

Low

4:56 AM

0.1'

High

10:57 AM

8.4'

Low

5:24 PM

-0.1'

High

11:20 PM

7.9'

☀️ 6:59 AM ↑☀️ 6:23 PM ↓8.4'4.2'-0.1'1236912369124:5610:575:2411:20

🌤️ Marine Weather

☀️ Sun

Rise

6:59 AM

Set

6:23 PM

🌘 Moon

Rise

5:52 AM

2%

Set

5:41 PM

1%

Saturday - October 10, 2026

🌊 Tides

Low

5:38 AM

0.2'

High

11:39 AM

8.5'

Low

6:09 PM

-0.1'

☀️ 7:00 AM ↑☀️ 6:21 PM ↓8.5'4.2'-0.1'1236912369125:3811:396:09

🌤️ Marine Weather

☀️ Sun

Rise

7:00 AM

Set

6:21 PM

🌘 Moon

Rise

6:59 AM

0%

Set

6:04 PM

0%

Sunday - October 11, 2026

🌊 Tides

High

12:04 AM

7.7'

Low

6:19 AM

0.3'

High

12:19 PM

8.5'

Low

6:51 PM

0.0'

☀️ 7:01 AM ↑☀️ 6:19 PM ↓8.5'4.2'0.0'12369123691212:046:1912:196:51

🌤️ Marine Weather

☀️ Sun

Rise

7:01 AM

Set

6:19 PM

🌑 Moon

Rise

8:06 AM

1%

Set

6:29 PM

2%

Monday - October 12, 2026

🌊 Tides

High

12:46 AM

7.6'

Low

6:58 AM

0.6'

High

12:59 PM

8.3'

Low

7:32 PM

0.1'

☀️ 7:02 AM ↑☀️ 6:18 PM ↓8.3'4.2'0.1'12369123691212:466:5812:597:32

🌤️ Marine Weather

☀️ Sun

Rise

7:02 AM

Set

6:18 PM

🌑 Moon

Rise

9:14 AM

4%

Set

6:57 PM

6%

Tuesday - October 13, 2026

🌊 Tides

High

1:28 AM

7.3'

Low

7:38 AM

0.9'

High

1:39 PM

8.0'

Low

8:13 PM

0.4'

☀️ 7:03 AM ↑☀️ 6:16 PM ↓8.0'4.2'0.4'1236912369121:287:381:398:13

🌤️ Marine Weather

☀️ Sun

Rise

7:03 AM

Set

6:16 PM

🌑 Moon

Rise

10:20 AM

9%

Set

7:31 PM

11%

Wednesday - October 14, 2026

🌊 Tides

High

2:11 AM

7.1'

Low

8:19 AM

1.1'

High

2:21 PM

7.7'

Low

8:55 PM

0.7'

☀️ 7:04 AM ↑☀️ 6:15 PM ↓7.7'4.2'0.7'1236912369122:118:192:218:55

🌤️ Marine Weather

☀️ Sun

Rise

7:04 AM

Set

6:15 PM

🌒 Moon

Rise

11:23 AM

15%

Set

8:11 PM

18%

7-Day Insights

Tidal Extremes

Highest Tide

Sat, Oct 10

8.5' at 11:39 AM

Unusually high

Lowest Tide

Sat, Oct 10

-0.1' at 6:09 PM

Lower than usual

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Biggest Tidal Ranges

Largest

Sat, Oct 10

8.7' tidal range

Larger than usual

Smallest

Wed, Oct 14

7.0' tidal range

Typical