Cos Cob Harbor Location

Cos Cob Harbor Monthly Tide Charts

September, 2026

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

1

Tide Chart for 9/1
Tide Time Height
High 2:32 AM 7.61 ft
Low 8:45 AM 0.42 ft
High 2:50 PM 8.33 ft
Low 9:25 PM 0.35 ft

2

Tide Chart for 9/2
Tide Time Height
High 3:20 AM 7.36 ft
Low 9:31 AM 0.63 ft
High 3:38 PM 8.24 ft
Low 10:18 PM 0.53 ft

3

Tide Chart for 9/3
Tide Time Height
High 4:13 AM 7.09 ft
Low 10:24 AM 0.88 ft
High 4:32 PM 8.06 ft
Low 11:19 PM 0.74 ft

4

Tide Chart for 9/4
Tide Time Height
High 5:12 AM 6.84 ft
Low 11:26 AM 1.1 ft
High 5:34 PM 7.87 ft

5

Tide Chart for 9/5
Tide Time Height
Low 12:25 AM 0.87 ft
High 6:18 AM 6.71 ft
Low 12:34 PM 1.2 ft
High 6:43 PM 7.75 ft

6

Tide Chart for 9/6
Tide Time Height
Low 1:32 AM 0.85 ft
High 7:28 AM 6.78 ft
Low 1:44 PM 1.12 ft
High 7:53 PM 7.8 ft

7

Tide Chart for 9/7
Tide Time Height
Low 2:37 AM 0.67 ft
High 8:34 AM 7.06 ft
Low 2:51 PM 0.86 ft
High 8:59 PM 7.98 ft

8

Tide Chart for 9/8
Tide Time Height
Low 3:37 AM 0.39 ft
High 9:35 AM 7.47 ft
Low 3:52 PM 0.53 ft
High 9:57 PM 8.19 ft

9

Tide Chart for 9/9
Tide Time Height
Low 4:31 AM 0.12 ft
High 10:29 AM 7.9 ft
Low 4:49 PM 0.21 ft
High 10:50 PM 8.32 ft

10

Tide Chart for 9/10
Tide Time Height
Low 5:19 AM -0.07 ft
High 11:18 AM 8.25 ft
Low 5:40 PM 0 ft
High 11:39 PM 8.31 ft

11

Tide Chart for 9/11
Tide Time Height
Low 6:04 AM -0.12 ft
High 12:03 PM 8.47 ft
Low 6:28 PM -0.09 ft

12

Tide Chart for 9/12
Tide Time Height
High 12:25 AM 8.18 ft
Low 6:47 AM -0.02 ft
High 12:47 PM 8.52 ft
Low 7:14 PM -0.04 ft

13

Tide Chart for 9/13
Tide Time Height
High 1:10 AM 7.93 ft
Low 7:28 AM 0.22 ft
High 1:30 PM 8.43 ft
Low 7:59 PM 0.13 ft

14

Tide Chart for 9/14
Tide Time Height
High 1:55 AM 7.62 ft
Low 8:09 AM 0.55 ft
High 2:12 PM 8.22 ft
Low 8:43 PM 0.39 ft

15

Tide Chart for 9/15
Tide Time Height
High 2:40 AM 7.28 ft
Low 8:52 AM 0.93 ft
High 2:56 PM 7.92 ft
Low 9:29 PM 0.7 ft

16

Tide Chart for 9/16
Tide Time Height
High 3:27 AM 6.95 ft
Low 9:36 AM 1.3 ft
High 3:42 PM 7.58 ft
Low 10:18 PM 1.02 ft

17

Tide Chart for 9/17
Tide Time Height
High 4:16 AM 6.65 ft
Low 10:26 AM 1.63 ft
High 4:31 PM 7.24 ft
Low 11:10 PM 1.31 ft

18

Tide Chart for 9/18
Tide Time Height
High 5:09 AM 6.41 ft
Low 11:20 AM 1.87 ft
High 5:26 PM 6.97 ft

19

Tide Chart for 9/19
Tide Time Height
Low 12:06 AM 1.5 ft
High 6:07 AM 6.29 ft
Low 12:19 PM 1.96 ft
High 6:25 PM 6.83 ft

20

Tide Chart for 9/20
Tide Time Height
Low 1:03 AM 1.56 ft
High 7:06 AM 6.32 ft
Low 1:19 PM 1.89 ft
High 7:25 PM 6.85 ft

21

Tide Chart for 9/21
Tide Time Height
Low 1:59 AM 1.46 ft
High 8:03 AM 6.51 ft
Low 2:15 PM 1.68 ft
High 8:22 PM 7.01 ft

22

Tide Chart for 9/22
Tide Time Height
Low 2:50 AM 1.25 ft
High 8:54 AM 6.81 ft
Low 3:07 PM 1.36 ft
High 9:12 PM 7.26 ft

23

Tide Chart for 9/23
Tide Time Height
Low 3:36 AM 0.97 ft
High 9:40 AM 7.19 ft
Low 3:55 PM 0.99 ft
High 9:57 PM 7.52 ft

24

Tide Chart for 9/24
Tide Time Height
Low 4:18 AM 0.69 ft
High 10:20 AM 7.59 ft
Low 4:39 PM 0.63 ft
High 10:39 PM 7.74 ft

25

Tide Chart for 9/25
Tide Time Height
Low 4:58 AM 0.44 ft
High 10:59 AM 7.96 ft
Low 5:22 PM 0.3 ft
High 11:19 PM 7.89 ft

26

Tide Chart for 9/26
Tide Time Height
Low 5:36 AM 0.27 ft
High 11:36 AM 8.28 ft
Low 6:03 PM 0.04 ft
High 11:59 PM 7.95 ft

27

Tide Chart for 9/27
Tide Time Height
Low 6:14 AM 0.17 ft
High 12:14 PM 8.53 ft
Low 6:45 PM -0.13 ft

28

Tide Chart for 9/28
Tide Time Height
High 12:40 AM 7.91 ft
Low 6:53 AM 0.17 ft
High 12:54 PM 8.66 ft
Low 7:29 PM -0.16 ft

29

Tide Chart for 9/29
Tide Time Height
High 1:24 AM 7.79 ft
Low 7:35 AM 0.27 ft
High 1:38 PM 8.67 ft
Low 8:15 PM -0.07 ft

30

Tide Chart for 9/30
Tide Time Height
High 2:11 AM 7.6 ft
Low 8:21 AM 0.45 ft
High 2:26 PM 8.54 ft
Low 9:06 PM 0.15 ft

Tide prediction source: NOAA
Vertical datum: MLLW — Mean Lower Low Water