Duwamish Waterway Location

Duwamish Waterway Monthly Tide Charts

September, 2026

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

1

Tide Chart for 9/1
Tide Time Height
Low 2:26 AM 0.75 ft
High 8:42 AM 9.57 ft
Low 2:21 PM 4.04 ft
High 8:19 PM 10.99 ft

2

Tide Chart for 9/2
Tide Time Height
Low 3:11 AM 0.04 ft
High 9:45 AM 9.38 ft
Low 3:06 PM 5.42 ft
High 8:52 PM 10.73 ft

3

Tide Chart for 9/3
Tide Time Height
Low 4:02 AM -0.38 ft
High 11:01 AM 9.19 ft
Low 4:00 PM 6.67 ft
High 9:31 PM 10.34 ft

4

Tide Chart for 9/4
Tide Time Height
Low 5:00 AM -0.57 ft
High 12:41 PM 9.21 ft
Low 5:19 PM 7.6 ft
High 10:25 PM 9.86 ft

5

Tide Chart for 9/5
Tide Time Height
Low 6:06 AM -0.63 ft
High 2:29 PM 9.64 ft
Low 7:11 PM 7.88 ft
High 11:40 PM 9.44 ft

6

Tide Chart for 9/6
Tide Time Height
Low 7:16 AM -0.73 ft
High 3:37 PM 10.2 ft
Low 8:50 PM 7.36 ft

7

Tide Chart for 9/7
Tide Time Height
High 1:07 AM 9.29 ft
Low 8:23 AM -0.88 ft
High 4:21 PM 10.65 ft
Low 9:49 PM 6.44 ft

8

Tide Chart for 9/8
Tide Time Height
High 2:26 AM 9.46 ft
Low 9:23 AM -0.97 ft
High 4:55 PM 10.96 ft
Low 10:34 PM 5.36 ft

9

Tide Chart for 9/9
Tide Time Height
High 3:34 AM 9.75 ft
Low 10:15 AM -0.81 ft
High 5:24 PM 11.16 ft
Low 11:13 PM 4.21 ft

10

Tide Chart for 9/10
Tide Time Height
High 4:33 AM 9.98 ft
Low 11:02 AM -0.33 ft
High 5:50 PM 11.27 ft
Low 11:50 PM 3.09 ft

11

Tide Chart for 9/11
Tide Time Height
High 5:29 AM 10.09 ft
Low 11:45 AM 0.49 ft
High 6:14 PM 11.28 ft

12

Tide Chart for 9/12
Tide Time Height
Low 12:27 AM 2.05 ft
High 6:22 AM 10.09 ft
Low 12:26 PM 1.58 ft
High 6:40 PM 11.19 ft

13

Tide Chart for 9/13
Tide Time Height
Low 1:03 AM 1.19 ft
High 7:15 AM 10.03 ft
Low 1:07 PM 2.83 ft
High 7:06 PM 10.96 ft

14

Tide Chart for 9/14
Tide Time Height
Low 1:39 AM 0.55 ft
High 8:08 AM 9.92 ft
Low 1:49 PM 4.12 ft
High 7:35 PM 10.59 ft

15

Tide Chart for 9/15
Tide Time Height
Low 2:17 AM 0.2 ft
High 9:03 AM 9.77 ft
Low 2:34 PM 5.35 ft
High 8:05 PM 10.08 ft

16

Tide Chart for 9/16
Tide Time Height
Low 2:57 AM 0.14 ft
High 10:04 AM 9.59 ft
Low 3:26 PM 6.4 ft
High 8:39 PM 9.48 ft

17

Tide Chart for 9/17
Tide Time Height
Low 3:41 AM 0.35 ft
High 11:16 AM 9.41 ft
Low 4:36 PM 7.18 ft
High 9:19 PM 8.83 ft

18

Tide Chart for 9/18
Tide Time Height
Low 4:32 AM 0.72 ft
High 12:50 PM 9.36 ft
Low 6:40 PM 7.47 ft
High 10:14 PM 8.23 ft

19

Tide Chart for 9/19
Tide Time Height
Low 5:32 AM 1.09 ft
High 2:19 PM 9.55 ft
Low 8:34 PM 7.11 ft
High 11:31 PM 7.82 ft

20

Tide Chart for 9/20
Tide Time Height
Low 6:40 AM 1.3 ft
High 3:16 PM 9.82 ft
Low 9:26 PM 6.57 ft

21

Tide Chart for 9/21
Tide Time Height
High 12:56 AM 7.78 ft
Low 7:46 AM 1.28 ft
High 3:53 PM 10.04 ft
Low 9:57 PM 5.98 ft

22

Tide Chart for 9/22
Tide Time Height
High 2:07 AM 8.07 ft
Low 8:42 AM 1.12 ft
High 4:19 PM 10.22 ft
Low 10:20 PM 5.33 ft

23

Tide Chart for 9/23
Tide Time Height
High 3:03 AM 8.51 ft
Low 9:29 AM 1.01 ft
High 4:38 PM 10.39 ft
Low 10:40 PM 4.54 ft

24

Tide Chart for 9/24
Tide Time Height
High 3:52 AM 8.98 ft
Low 10:10 AM 1.08 ft
High 4:56 PM 10.57 ft
Low 11:02 PM 3.57 ft

25

Tide Chart for 9/25
Tide Time Height
High 4:37 AM 9.44 ft
Low 10:48 AM 1.4 ft
High 5:14 PM 10.76 ft
Low 11:28 PM 2.45 ft

26

Tide Chart for 9/26
Tide Time Height
High 5:22 AM 9.87 ft
Low 11:25 AM 2 ft
High 5:35 PM 10.92 ft
Low 11:58 PM 1.26 ft

27

Tide Chart for 9/27
Tide Time Height
High 6:08 AM 10.24 ft
Low 12:02 PM 2.85 ft
High 5:59 PM 11.03 ft

28

Tide Chart for 9/28
Tide Time Height
Low 12:32 AM 0.13 ft
High 6:56 AM 10.54 ft
Low 12:42 PM 3.86 ft
High 6:25 PM 11.05 ft

29

Tide Chart for 9/29
Tide Time Height
Low 1:10 AM -0.8 ft
High 7:48 AM 10.69 ft
Low 1:24 PM 4.95 ft
High 6:55 PM 10.94 ft

30

Tide Chart for 9/30
Tide Time Height
Low 1:52 AM -1.4 ft
High 8:45 AM 10.66 ft
Low 2:10 PM 6 ft
High 7:28 PM 10.68 ft

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