Port Jefferson Harbor Entrance Monthly Tide Charts

October, 2026

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Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

1

Tide Chart for 10/1

Tide	Time	Height
High	2:59 AM	6.73 ft
Low	9:02 AM	0.63 ft
High	3:16 PM	7.59 ft
Low	9:53 PM	0.39 ft

2

Tide Chart for 10/2

Tide	Time	Height
High	3:56 AM	6.49 ft
Low	10:01 AM	0.87 ft
High	4:15 PM	7.31 ft
Low	10:56 PM	0.63 ft

3

Tide Chart for 10/3

Tide	Time	Height
High	4:58 AM	6.31 ft
Low	11:08 AM	1.05 ft
High	5:21 PM	7.06 ft

4

Tide Chart for 10/4

Tide	Time	Height
Low	12:03 AM	0.76 ft
High	6:06 AM	6.26 ft
Low	12:19 PM	1.09 ft
High	6:31 PM	6.91 ft

5

Tide Chart for 10/5

Tide	Time	Height
Low	1:09 AM	0.74 ft
High	7:15 AM	6.41 ft
Low	1:29 PM	0.96 ft
High	7:41 PM	6.93 ft

6

Tide Chart for 10/6

Tide	Time	Height
Low	2:12 AM	0.58 ft
High	8:20 AM	6.72 ft
Low	2:34 PM	0.69 ft
High	8:45 PM	7.04 ft

7

Tide Chart for 10/7

Tide	Time	Height
Low	3:09 AM	0.37 ft
High	9:18 AM	7.11 ft
Low	3:33 PM	0.39 ft
High	9:41 PM	7.17 ft

8

Tide Chart for 10/8

Tide	Time	Height
Low	3:59 AM	0.2 ft
High	10:08 AM	7.47 ft
Low	4:26 PM	0.12 ft
High	10:31 PM	7.24 ft

9

Tide Chart for 10/9

Tide	Time	Height
Low	4:46 AM	0.11 ft
High	10:54 AM	7.71 ft
Low	5:14 PM	-0.05 ft
High	11:17 PM	7.21 ft

10

Tide Chart for 10/10

Tide	Time	Height
Low	5:28 AM	0.14 ft
High	11:36 AM	7.81 ft
Low	5:59 PM	-0.1 ft

11

Tide Chart for 10/11

Tide	Time	Height
High	12:01 AM	7.1 ft
Low	6:09 AM	0.28 ft
High	12:16 PM	7.77 ft
Low	6:41 PM	-0.04 ft

12

Tide Chart for 10/12

Tide	Time	Height
High	12:43 AM	6.93 ft
Low	6:48 AM	0.5 ft
High	12:56 PM	7.6 ft
Low	7:22 PM	0.12 ft

13

Tide Chart for 10/13

Tide	Time	Height
High	1:25 AM	6.71 ft
Low	7:28 AM	0.76 ft
High	1:36 PM	7.36 ft
Low	8:03 PM	0.35 ft

14

Tide Chart for 10/14

Tide	Time	Height
High	2:08 AM	6.48 ft
Low	8:09 AM	1.04 ft
High	2:18 PM	7.07 ft
Low	8:45 PM	0.61 ft

15

Tide Chart for 10/15

Tide	Time	Height
High	2:53 AM	6.25 ft
Low	8:52 AM	1.29 ft
High	3:02 PM	6.77 ft
Low	9:31 PM	0.88 ft

16

Tide Chart for 10/16

Tide	Time	Height
High	3:40 AM	6.05 ft
Low	9:40 AM	1.51 ft
High	3:51 PM	6.49 ft
Low	10:20 PM	1.12 ft

17

Tide Chart for 10/17

Tide	Time	Height
High	4:30 AM	5.89 ft
Low	10:33 AM	1.66 ft
High	4:43 PM	6.27 ft
Low	11:13 PM	1.27 ft

18

Tide Chart for 10/18

Tide	Time	Height
High	5:24 AM	5.81 ft
Low	11:31 AM	1.7 ft
High	5:40 PM	6.15 ft

19

Tide Chart for 10/19

Tide	Time	Height
Low	12:09 AM	1.32 ft
High	6:20 AM	5.85 ft
Low	12:29 PM	1.62 ft
High	6:39 PM	6.14 ft

20

Tide Chart for 10/20

Tide	Time	Height
Low	1:03 AM	1.24 ft
High	7:16 AM	6.03 ft
Low	1:26 PM	1.41 ft
High	7:35 PM	6.24 ft

21

Tide Chart for 10/21

Tide	Time	Height
Low	1:54 AM	1.06 ft
High	8:07 AM	6.33 ft
Low	2:20 PM	1.1 ft
High	8:28 PM	6.43 ft

22

Tide Chart for 10/22

Tide	Time	Height
Low	2:41 AM	0.83 ft
High	8:54 AM	6.72 ft
Low	3:09 PM	0.72 ft
High	9:16 PM	6.65 ft

23

Tide Chart for 10/23

Tide	Time	Height
Low	3:25 AM	0.58 ft
High	9:37 AM	7.13 ft
Low	3:56 PM	0.33 ft
High	10:01 PM	6.85 ft

24

Tide Chart for 10/24

Tide	Time	Height
Low	4:07 AM	0.36 ft
High	10:18 AM	7.52 ft
Low	4:41 PM	-0.03 ft
High	10:44 PM	7.01 ft

25

Tide Chart for 10/25

Tide	Time	Height
Low	4:49 AM	0.19 ft
High	10:58 AM	7.84 ft
Low	5:26 PM	-0.3 ft
High	11:28 PM	7.1 ft

26

Tide Chart for 10/26

Tide	Time	Height
Low	5:32 AM	0.08 ft
High	11:40 AM	8.05 ft
Low	6:11 PM	-0.45 ft

27

Tide Chart for 10/27

Tide	Time	Height
High	12:13 AM	7.1 ft
Low	6:16 AM	0.06 ft
High	12:25 PM	8.12 ft
Low	6:58 PM	-0.45 ft

28

Tide Chart for 10/28

Tide	Time	Height
High	1:00 AM	7.01 ft
Low	7:02 AM	0.13 ft
High	1:13 PM	8.04 ft
Low	7:48 PM	-0.32 ft

29

Tide Chart for 10/29

Tide	Time	Height
High	1:51 AM	6.86 ft
Low	7:53 AM	0.28 ft
High	2:05 PM	7.82 ft
Low	8:41 PM	-0.09 ft

30

Tide Chart for 10/30

Tide	Time	Height
High	2:45 AM	6.68 ft
Low	8:50 AM	0.49 ft
High	3:02 PM	7.52 ft
Low	9:40 PM	0.17 ft

31

Tide Chart for 10/31

Tide	Time	Height
High	3:44 AM	6.51 ft
Low	9:52 AM	0.7 ft
High	4:04 PM	7.19 ft
Low	10:42 PM	0.39 ft

About these predictions

Tide heights are predictions, not measurements. Wind, air pressure, storms, and river flow can cause actual water levels to differ. Not for navigation.

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