Port Jefferson Harbor Entrance Location

Port Jefferson Harbor Entrance Monthly Tide Charts

September, 2026

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

1

Tide Chart for 9/1
Tide Time Height
High 2:29 AM 6.97 ft
Low 8:35 AM 0.38 ft
High 2:47 PM 7.63 ft
Low 9:15 PM 0.31 ft

2

Tide Chart for 9/2
Tide Time Height
High 3:17 AM 6.75 ft
Low 9:21 AM 0.57 ft
High 3:35 PM 7.55 ft
Low 10:08 PM 0.48 ft

3

Tide Chart for 9/3
Tide Time Height
High 4:10 AM 6.5 ft
Low 10:14 AM 0.8 ft
High 4:29 PM 7.38 ft
Low 11:09 PM 0.67 ft

4

Tide Chart for 9/4
Tide Time Height
High 5:09 AM 6.27 ft
Low 11:16 AM 1 ft
High 5:31 PM 7.2 ft

5

Tide Chart for 9/5
Tide Time Height
Low 12:15 AM 0.79 ft
High 6:15 AM 6.14 ft
Low 12:24 PM 1.09 ft
High 6:40 PM 7.1 ft

6

Tide Chart for 9/6
Tide Time Height
Low 1:22 AM 0.77 ft
High 7:25 AM 6.21 ft
Low 1:34 PM 1.01 ft
High 7:50 PM 7.15 ft

7

Tide Chart for 9/7
Tide Time Height
Low 2:27 AM 0.61 ft
High 8:31 AM 6.47 ft
Low 2:41 PM 0.78 ft
High 8:56 PM 7.31 ft

8

Tide Chart for 9/8
Tide Time Height
Low 3:27 AM 0.36 ft
High 9:32 AM 6.84 ft
Low 3:42 PM 0.48 ft
High 9:54 PM 7.5 ft

9

Tide Chart for 9/9
Tide Time Height
Low 4:21 AM 0.11 ft
High 10:26 AM 7.24 ft
Low 4:39 PM 0.2 ft
High 10:47 PM 7.62 ft

10

Tide Chart for 9/10
Tide Time Height
Low 5:09 AM -0.06 ft
High 11:15 AM 7.56 ft
Low 5:30 PM 0 ft
High 11:36 PM 7.61 ft

11

Tide Chart for 9/11
Tide Time Height
Low 5:54 AM -0.11 ft
High 12:00 PM 7.75 ft
Low 6:18 PM -0.08 ft

12

Tide Chart for 9/12
Tide Time Height
High 12:22 AM 7.49 ft
Low 6:37 AM -0.01 ft
High 12:44 PM 7.81 ft
Low 7:04 PM -0.03 ft

13

Tide Chart for 9/13
Tide Time Height
High 1:07 AM 7.27 ft
Low 7:18 AM 0.2 ft
High 1:27 PM 7.72 ft
Low 7:49 PM 0.12 ft

14

Tide Chart for 9/14
Tide Time Height
High 1:52 AM 6.98 ft
Low 7:59 AM 0.5 ft
High 2:09 PM 7.53 ft
Low 8:33 PM 0.35 ft

15

Tide Chart for 9/15
Tide Time Height
High 2:37 AM 6.67 ft
Low 8:42 AM 0.84 ft
High 2:53 PM 7.25 ft
Low 9:19 PM 0.64 ft

16

Tide Chart for 9/16
Tide Time Height
High 3:24 AM 6.36 ft
Low 9:26 AM 1.18 ft
High 3:39 PM 6.94 ft
Low 10:08 PM 0.93 ft

17

Tide Chart for 9/17
Tide Time Height
High 4:13 AM 6.09 ft
Low 10:16 AM 1.48 ft
High 4:28 PM 6.63 ft
Low 11:00 PM 1.19 ft

18

Tide Chart for 9/18
Tide Time Height
High 5:06 AM 5.88 ft
Low 11:10 AM 1.69 ft
High 5:23 PM 6.38 ft
Low 11:56 PM 1.37 ft

19

Tide Chart for 9/19
Tide Time Height
High 6:04 AM 5.76 ft
Low 12:09 PM 1.78 ft
High 6:22 PM 6.25 ft

20

Tide Chart for 9/20
Tide Time Height
Low 12:53 AM 1.42 ft
High 7:03 AM 5.79 ft
Low 1:09 PM 1.72 ft
High 7:22 PM 6.27 ft

21

Tide Chart for 9/21
Tide Time Height
Low 1:49 AM 1.33 ft
High 8:00 AM 5.96 ft
Low 2:05 PM 1.52 ft
High 8:19 PM 6.42 ft

22

Tide Chart for 9/22
Tide Time Height
Low 2:40 AM 1.13 ft
High 8:51 AM 6.24 ft
Low 2:57 PM 1.23 ft
High 9:09 PM 6.65 ft

23

Tide Chart for 9/23
Tide Time Height
Low 3:26 AM 0.88 ft
High 9:37 AM 6.59 ft
Low 3:45 PM 0.9 ft
High 9:54 PM 6.89 ft

24

Tide Chart for 9/24
Tide Time Height
Low 4:08 AM 0.63 ft
High 10:17 AM 6.95 ft
Low 4:29 PM 0.57 ft
High 10:36 PM 7.09 ft

25

Tide Chart for 9/25
Tide Time Height
Low 4:48 AM 0.4 ft
High 10:56 AM 7.29 ft
Low 5:12 PM 0.27 ft
High 11:16 PM 7.22 ft

26

Tide Chart for 9/26
Tide Time Height
Low 5:26 AM 0.24 ft
High 11:33 AM 7.59 ft
Low 5:53 PM 0.03 ft
High 11:56 PM 7.28 ft

27

Tide Chart for 9/27
Tide Time Height
Low 6:04 AM 0.16 ft
High 12:11 PM 7.81 ft
Low 6:35 PM -0.11 ft

28

Tide Chart for 9/28
Tide Time Height
High 12:37 AM 7.25 ft
Low 6:43 AM 0.16 ft
High 12:51 PM 7.93 ft
Low 7:19 PM -0.15 ft

29

Tide Chart for 9/29
Tide Time Height
High 1:21 AM 7.14 ft
Low 7:25 AM 0.24 ft
High 1:35 PM 7.94 ft
Low 8:05 PM -0.06 ft

30

Tide Chart for 9/30
Tide Time Height
High 2:08 AM 6.96 ft
Low 8:11 AM 0.4 ft
High 2:23 PM 7.82 ft
Low 8:56 PM 0.13 ft

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