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

 

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Latest Tide Data (Predicted Tide Table)

Time (GMT)ElevationResidual
18-08-2026 20:406.73-0.06
 Next HWNext LW
20:58, 6.81 03:12, 1.94
Date Highest 2026 Date Lowest 2026
03-02 8.22m 19-04 0.29m
Time (GMT)ElevationResidual
09-07-2025 00:002.990.03
08-07-2025 23:502.810
08-07-2025 23:402.680
08-07-2025 23:302.560.01
08-07-2025 23:202.43-0
08-07-2025 23:102.3-0.03
08-07-2025 23:002.24-0.01
08-07-2025 22:502.16-0.01
08-07-2025 22:402.1-0.01
08-07-2025 22:302.04-0.02
08-07-2025 22:202-0.03
08-07-2025 22:101.98-0.04
08-07-2025 22:001.99-0.03
08-07-2025 21:501.99-0.05
08-07-2025 21:402.02-0.05
08-07-2025 21:302.05-0.07
08-07-2025 21:202.1-0.08
08-07-2025 21:102.19-0.07
08-07-2025 21:002.25-0.09
08-07-2025 20:502.34-0.1
08-07-2025 20:402.46-0.09
08-07-2025 20:302.59-0.1
08-07-2025 20:202.69-0.12
08-07-2025 20:102.81-0.14
08-07-2025 20:003.01-0.1
08-07-2025 19:503.13-0.13
08-07-2025 19:403.3-0.13
08-07-2025 19:303.46-0.14
08-07-2025 19:203.63-0.15
08-07-2025 19:103.81-0.14
08-07-2025 19:003.99-0.14
08-07-2025 18:504.17-0.14
08-07-2025 18:404.35-0.14
08-07-2025 18:304.54-0.13
08-07-2025 18:204.7-0.15
08-07-2025 18:104.88-0.14
08-07-2025 18:005.05-0.13
08-07-2025 17:505.23-0.11
08-07-2025 17:405.41-0.09
08-07-2025 17:305.55-0.09
08-07-2025 17:205.68-0.09
08-07-2025 17:105.83-0.07
08-07-2025 17:005.94-0.07
08-07-2025 16:506.04-0.07
08-07-2025 16:406.14-0.05
08-07-2025 16:306.22-0.04
08-07-2025 16:206.27-0.04
08-07-2025 16:106.34-0.01
08-07-2025 16:006.380.01
08-07-2025 15:506.40.02
08-07-2025 15:406.380.01
08-07-2025 15:306.35-0
08-07-2025 15:206.320.02
08-07-2025 15:106.270.02
08-07-2025 15:006.210.03
08-07-2025 14:506.10.01
08-07-2025 14:4060.01
08-07-2025 14:305.890.02
08-07-2025 14:205.75-0
08-07-2025 14:105.61-0.01
08-07-2025 14:005.45-0.02
08-07-2025 13:505.3-0.02
08-07-2025 13:405.13-0.03
08-07-2025 13:304.96-0.03
08-07-2025 13:204.77-0.04
08-07-2025 13:104.62-0.02
08-07-2025 13:004.43-0.03
08-07-2025 12:504.27-0.01
08-07-2025 12:404.08-0.02
08-07-2025 12:303.92-0
08-07-2025 12:203.72-0.03
08-07-2025 12:103.5-0.08
08-07-2025 12:003.37-0.04
08-07-2025 11:503.19-0.06
08-07-2025 11:403.06-0.05
08-07-2025 11:302.93-0.03
08-07-2025 11:202.74-0.08
08-07-2025 11:102.62-0.08
08-07-2025 11:002.52-0.07
08-07-2025 10:502.41-0.08
08-07-2025 10:402.32-0.09
08-07-2025 10:302.25-0.09
08-07-2025 10:202.2-0.07
08-07-2025 10:102.15-0.07
08-07-2025 10:002.1-0.09
08-07-2025 09:502.11-0.07
08-07-2025 09:402.08-0.1
08-07-2025 09:302.08-0.1
08-07-2025 09:202.1-0.11
08-07-2025 09:102.14-0.1
08-07-2025 09:002.18-0.12
08-07-2025 08:502.24-0.12
08-07-2025 08:402.32-0.12
08-07-2025 08:302.4-0.13
08-07-2025 08:202.49-0.13
08-07-2025 08:102.6-0.13
08-07-2025 08:002.72-0.13
08-07-2025 07:502.84-0.13
08-07-2025 07:402.99-0.12
08-07-2025 07:303.11-0.13
08-07-2025 07:203.23-0.16
08-07-2025 07:103.38-0.16
08-07-2025 07:003.5-0.19
08-07-2025 06:503.67-0.18
08-07-2025 06:403.82-0.18
08-07-2025 06:303.99-0.18
08-07-2025 06:204.15-0.18
08-07-2025 06:104.32-0.16
08-07-2025 06:004.47-0.18
08-07-2025 05:504.64-0.16
08-07-2025 05:404.79-0.16
08-07-2025 05:304.92-0.18
08-07-2025 05:205.07-0.16
08-07-2025 05:105.21-0.16
08-07-2025 05:005.35-0.14
08-07-2025 04:505.47-0.14
08-07-2025 04:405.57-0.13
08-07-2025 04:305.67-0.13
08-07-2025 04:205.76-0.11
08-07-2025 04:105.84-0.1
08-07-2025 04:005.88-0.12
08-07-2025 03:505.95-0.09
08-07-2025 03:405.98-0.08
08-07-2025 03:305.99-0.09
08-07-2025 03:206-0.08
08-07-2025 03:106.01-0.06
08-07-2025 03:005.98-0.06
08-07-2025 02:505.95-0.05
08-07-2025 02:405.89-0.06
08-07-2025 02:305.83-0.05
08-07-2025 02:205.72-0.08
08-07-2025 02:105.63-0.08
08-07-2025 02:005.53-0.07
08-07-2025 01:505.42-0.07
08-07-2025 01:405.31-0.05
08-07-2025 01:305.17-0.06
08-07-2025 01:205.02-0.07
08-07-2025 01:104.86-0.09
08-07-2025 01:004.73-0.06
08-07-2025 00:504.58-0.06
08-07-2025 00:404.41-0.08
08-07-2025 00:304.26-0.06
08-07-2025 00:204.11-0.06
08-07-2025 00:103.96-0.04