National Network of Regional Coastal Monitoring Programmes

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Note that these are real-time data and are not quality-controlled. Long-range graphs are plotted from a randomised subsample of half-hourly data.

Port Isaac

Tide Levels and Harmonics

 


Latest Tide Data (Predicted Tide Table)

Time (GMT)ElevationResidual
09-07-2025 15:406.42-0.01
 Next HWNext LW
16:34, 6.69 22:50, 1.73
Date Highest 2025 Date Lowest 2025
31-03 8.34m 30-03 -0.05m

Port Isaac Predicted Tide Table (Chart Datum)

09-07-202510-07-202511-07-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High04:12
16:34
6.34m
6.69m
High04:55
17:14
6.61m
6.96m
High05:34
17:52
6.83m
7.17m
Low10:28
22:50
1.90m
1.73m
Low11:09
23:31
1.65m
1.48m
Low11:49
1.45m
12-07-202513-07-202514-07-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High06:12
18:30
6.99m
7.31m
High06:50
19:09
7.07m
7.36m
High07:28
19:48
7.08m
7.33m
Low00:11
12:27
1.29m
1.32m
Low00:50
13:04
1.18m
1.26m
Low01:28
13:42
1.14m
1.29m