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
14-06-2025 13:201.620.03
 Next HWNext LW
19:20, 6.97 01:39, 1.54
Date Highest 2025 Date Lowest 2025
31-03 8.34m 30-03 -0.05m

Port Isaac Predicted Tide Table (Chart Datum)

14-06-202515-06-202516-06-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High07:01
19:20
6.77m
6.97m
High07:40
20:01
6.67m
6.85m
High08:23
20:46
6.53m
6.71m
Low01:00
13:14
1.46m
1.59m
Low01:39
13:53
1.55m
1.72m
Low02:21
14:35
1.66m
1.86m
17-06-202518-06-202519-06-2025
 Time (GMT)Height Time (GMT)Height Time (GMT)Height
High09:09
21:36
6.39m
6.59m
High10:02
22:33
6.27m
6.50m
High11:02
23:35
6.21m
6.47m
Low03:06
15:23
1.78m
2.00m
Low03:57
16:18
1.88m
2.10m
Low04:55
17:22
1.93m
2.13m