Porto Grande Location

Porto Grande Monthly Tide Charts

October, 2026

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

1

Tide Chart for 10/1
Tide Time Height
Low 4:59 AM 0.15 m
High 11:05 AM 0.93 m
Low 5:09 PM 0.22 m
High 11:27 PM 0.97 m

2

Tide Chart for 10/2
Tide Time Height
Low 5:47 AM 0.22 m
High 11:54 AM 0.85 m
Low 5:51 PM 0.3 m

3

Tide Chart for 10/3
Tide Time Height
High 12:23 AM 0.93 m
Low 6:46 AM 0.3 m
High 12:57 PM 0.76 m
Low 6:43 PM 0.38 m

4

Tide Chart for 10/4
Tide Time Height
High 1:36 AM 0.89 m
Low 8:05 AM 0.37 m
High 2:26 PM 0.71 m
Low 8:02 PM 0.44 m

5

Tide Chart for 10/5
Tide Time Height
High 3:06 AM 0.89 m
Low 9:51 AM 0.39 m
High 4:10 PM 0.72 m
Low 9:48 PM 0.44 m

6

Tide Chart for 10/6
Tide Time Height
High 4:33 AM 0.93 m
Low 11:18 AM 0.35 m
High 5:26 PM 0.79 m
Low 11:14 PM 0.39 m

7

Tide Chart for 10/7
Tide Time Height
High 5:40 AM 1 m
Low 12:14 PM 0.29 m
High 6:18 PM 0.88 m

8

Tide Chart for 10/8
Tide Time Height
Low 12:14 AM 0.31 m
High 6:32 AM 1.06 m
Low 12:57 PM 0.24 m
High 7:00 PM 0.96 m

9

Tide Chart for 10/9
Tide Time Height
Low 1:01 AM 0.24 m
High 7:17 AM 1.11 m
Low 1:34 PM 0.19 m
High 7:37 PM 1.02 m

10

Tide Chart for 10/10
Tide Time Height
Low 1:43 AM 0.18 m
High 7:56 AM 1.12 m
Low 2:07 PM 0.16 m
High 8:12 PM 1.07 m

11

Tide Chart for 10/11
Tide Time Height
Low 2:22 AM 0.14 m
High 8:32 AM 1.1 m
Low 2:39 PM 0.14 m
High 8:45 PM 1.08 m

12

Tide Chart for 10/12
Tide Time Height
Low 2:58 AM 0.13 m
High 9:05 AM 1.05 m
Low 3:10 PM 0.14 m
High 9:16 PM 1.06 m

13

Tide Chart for 10/13
Tide Time Height
Low 3:33 AM 0.14 m
High 9:36 AM 0.99 m
Low 3:39 PM 0.16 m
High 9:46 PM 1.03 m

14

Tide Chart for 10/14
Tide Time Height
Low 4:06 AM 0.17 m
High 10:06 AM 0.92 m
Low 4:08 PM 0.19 m
High 10:16 PM 0.99 m

15

Tide Chart for 10/15
Tide Time Height
Low 4:40 AM 0.21 m
High 10:37 AM 0.85 m
Low 4:37 PM 0.24 m
High 10:49 PM 0.94 m

16

Tide Chart for 10/16
Tide Time Height
Low 5:15 AM 0.27 m
High 11:11 AM 0.78 m
Low 5:08 PM 0.3 m
High 11:27 PM 0.89 m

17

Tide Chart for 10/17
Tide Time Height
Low 5:57 AM 0.34 m
High 11:53 AM 0.72 m
Low 5:45 PM 0.36 m

18

Tide Chart for 10/18
Tide Time Height
High 12:16 AM 0.85 m
Low 6:51 AM 0.41 m
High 12:54 PM 0.67 m
Low 6:34 PM 0.43 m

19

Tide Chart for 10/19
Tide Time Height
High 1:26 AM 0.81 m
Low 8:14 AM 0.46 m
High 2:33 PM 0.65 m
Low 7:50 PM 0.48 m

20

Tide Chart for 10/20
Tide Time Height
High 2:57 AM 0.81 m
Low 10:05 AM 0.46 m
High 4:15 PM 0.68 m
Low 9:33 PM 0.49 m

21

Tide Chart for 10/21
Tide Time Height
High 4:22 AM 0.85 m
Low 11:18 AM 0.42 m
High 5:19 PM 0.75 m
Low 10:54 PM 0.45 m

22

Tide Chart for 10/22
Tide Time Height
High 5:22 AM 0.91 m
Low 12:02 PM 0.37 m
High 6:02 PM 0.83 m
Low 11:50 PM 0.39 m

23

Tide Chart for 10/23
Tide Time Height
High 6:07 AM 0.97 m
Low 12:37 PM 0.31 m
High 6:37 PM 0.91 m

24

Tide Chart for 10/24
Tide Time Height
Low 12:35 AM 0.31 m
High 6:46 AM 1.02 m
Low 1:10 PM 0.25 m
High 7:11 PM 0.98 m

25

Tide Chart for 10/25
Tide Time Height
Low 1:16 AM 0.24 m
High 7:23 AM 1.06 m
Low 1:43 PM 0.19 m
High 7:46 PM 1.04 m

26

Tide Chart for 10/26
Tide Time Height
Low 1:56 AM 0.16 m
High 8:00 AM 1.07 m
Low 2:17 PM 0.14 m
High 8:22 PM 1.07 m

27

Tide Chart for 10/27
Tide Time Height
Low 2:36 AM 0.11 m
High 8:39 AM 1.06 m
Low 2:53 PM 0.12 m
High 9:00 PM 1.09 m

28

Tide Chart for 10/28
Tide Time Height
Low 3:18 AM 0.09 m
High 9:20 AM 1.02 m
Low 3:30 PM 0.13 m
High 9:42 PM 1.09 m

29

Tide Chart for 10/29
Tide Time Height
Low 4:02 AM 0.1 m
High 10:04 AM 0.96 m
Low 4:09 PM 0.17 m
High 10:27 PM 1.06 m

30

Tide Chart for 10/30
Tide Time Height
Low 4:50 AM 0.15 m
High 10:53 AM 0.89 m
Low 4:51 PM 0.23 m
High 11:18 PM 1.03 m

31

Tide Chart for 10/31
Tide Time Height
Low 5:43 AM 0.22 m
High 11:49 AM 0.82 m
Low 5:38 PM 0.31 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