Portsmouth Location

Portsmouth Monthly Tide Charts

October, 2026

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

1

Tide Chart for 10/1
Tide Time Height
High 2:56 AM 4.4 m
Low 8:16 AM 0.63 m
High 3:15 PM 4.36 m
Low 8:39 PM 0.72 m

2

Tide Chart for 10/2
Tide Time Height
High 3:44 AM 4.2 m
Low 9:01 AM 0.92 m
High 4:04 PM 4.1 m
Low 9:26 PM 0.99 m

3

Tide Chart for 10/3
Tide Time Height
High 4:46 AM 3.95 m
Low 9:51 AM 1.3 m
High 5:13 PM 3.8 m
Low 10:23 PM 1.33 m

4

Tide Chart for 10/4
Tide Time Height
High 6:18 AM 3.76 m
Low 10:57 AM 1.7 m
High 6:52 PM 3.64 m
Low 11:50 PM 1.61 m

5

Tide Chart for 10/5
Tide Time Height
High 7:42 AM 3.76 m
Low 1:06 PM 1.83 m
High 8:11 PM 3.7 m

6

Tide Chart for 10/6
Tide Time Height
Low 1:45 AM 1.53 m
High 8:54 AM 3.92 m
Low 2:26 PM 1.61 m
High 9:19 PM 3.89 m

7

Tide Chart for 10/7
Tide Time Height
Low 2:47 AM 1.28 m
High 10:00 AM 4.15 m
Low 3:16 PM 1.33 m
High 10:21 PM 4.12 m

8

Tide Chart for 10/8
Tide Time Height
Low 3:34 AM 1.04 m
High 10:58 AM 4.37 m
Low 3:58 PM 1.07 m
High 11:17 PM 4.3 m

9

Tide Chart for 10/9
Tide Time Height
Low 4:15 AM 0.83 m
High 11:49 AM 4.51 m
Low 4:36 PM 0.87 m

10

Tide Chart for 10/10
Tide Time Height
High 12:04 AM 4.4 m
Low 4:53 AM 0.69 m
High 12:30 PM 4.57 m
Low 5:13 PM 0.73 m

11

Tide Chart for 10/11
Tide Time Height
High 12:43 AM 4.4 m
Low 5:29 AM 0.63 m
High 12:59 PM 4.54 m
Low 5:49 PM 0.67 m

12

Tide Chart for 10/12
Tide Time Height
High 1:07 AM 4.35 m
Low 6:04 AM 0.63 m
High 1:11 PM 4.47 m
Low 6:24 PM 0.67 m

13

Tide Chart for 10/13
Tide Time Height
High 1:25 AM 4.29 m
Low 6:40 AM 0.7 m
High 1:33 PM 4.39 m
Low 7:00 PM 0.72 m

14

Tide Chart for 10/14
Tide Time Height
High 1:52 AM 4.21 m
Low 7:16 AM 0.83 m
High 2:02 PM 4.28 m
Low 7:36 PM 0.83 m

15

Tide Chart for 10/15
Tide Time Height
High 2:25 AM 4.12 m
Low 7:52 AM 1.01 m
High 2:36 PM 4.13 m
Low 8:14 PM 0.99 m

16

Tide Chart for 10/16
Tide Time Height
High 3:01 AM 3.99 m
Low 8:30 AM 1.24 m
High 3:12 PM 3.94 m
Low 8:52 PM 1.2 m

17

Tide Chart for 10/17
Tide Time Height
High 3:41 AM 3.82 m
Low 9:10 AM 1.52 m
High 3:53 PM 3.71 m
Low 9:34 PM 1.46 m

18

Tide Chart for 10/18
Tide Time Height
High 4:28 AM 3.62 m
Low 9:55 AM 1.82 m
High 4:44 PM 3.46 m
Low 10:24 PM 1.74 m

19

Tide Chart for 10/19
Tide Time Height
High 5:39 AM 3.43 m
Low 10:57 AM 2.1 m
High 6:10 PM 3.29 m
Low 11:54 PM 1.95 m

20

Tide Chart for 10/20
Tide Time Height
High 7:14 AM 3.41 m
Low 1:38 PM 2.1 m
High 7:40 PM 3.34 m

21

Tide Chart for 10/21
Tide Time Height
Low 1:53 AM 1.82 m
High 8:20 AM 3.55 m
Low 2:28 PM 1.85 m
High 8:40 PM 3.54 m

22

Tide Chart for 10/22
Tide Time Height
Low 2:42 AM 1.57 m
High 9:11 AM 3.78 m
Low 3:07 PM 1.55 m
High 9:29 PM 3.8 m

23

Tide Chart for 10/23
Tide Time Height
Low 3:22 AM 1.29 m
High 9:54 AM 4.05 m
Low 3:45 PM 1.24 m
High 10:13 PM 4.06 m

24

Tide Chart for 10/24
Tide Time Height
Low 4:00 AM 1.01 m
High 10:36 AM 4.3 m
Low 4:21 PM 0.95 m
High 10:55 PM 4.29 m

25

Tide Chart for 10/25
Tide Time Height
Low 3:38 AM 0.76 m
High 10:17 AM 4.51 m
Low 3:58 PM 0.71 m
High 10:38 PM 4.45 m

26

Tide Chart for 10/26
Tide Time Height
Low 4:16 AM 0.58 m
High 10:59 AM 4.64 m
Low 4:36 PM 0.54 m
High 11:23 PM 4.54 m

27

Tide Chart for 10/27
Tide Time Height
Low 4:54 AM 0.48 m
High 11:43 AM 4.69 m
Low 5:15 PM 0.45 m

28

Tide Chart for 10/28
Tide Time Height
High 12:09 AM 4.57 m
Low 5:34 AM 0.48 m
High 12:28 PM 4.65 m
Low 5:56 PM 0.44 m

29

Tide Chart for 10/29
Tide Time Height
High 12:57 AM 4.54 m
Low 6:15 AM 0.57 m
High 1:15 PM 4.53 m
Low 6:38 PM 0.52 m

30

Tide Chart for 10/30
Tide Time Height
High 1:48 AM 4.43 m
Low 6:59 AM 0.76 m
High 2:04 PM 4.34 m
Low 7:22 PM 0.7 m

31

Tide Chart for 10/31
Tide Time Height
High 2:44 AM 4.27 m
Low 7:45 AM 1.04 m
High 3:01 PM 4.1 m
Low 8:11 PM 0.97 m

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: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 ( license details ). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data Predictions generated with Slackwater; not an official government forecast. Official source
Vertical datum: LAT — LAT