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
18-07-2026 21:007.35-0.01
 Next HWNext LW
08:41, 7.1 02:44, 1.13
Date Highest 2026 Date Lowest 2026
03-02 8.22m 19-04 0.29m
Time (GMT)ElevationResidual
10-07-2025 00:002.13-0.02
09-07-2025 23:502.03-0.02
09-07-2025 23:401.94-0.01
09-07-2025 23:301.86-0.02
09-07-2025 23:201.78-0.04
09-07-2025 23:101.74-0.03
09-07-2025 23:001.71-0.03
09-07-2025 22:501.7-0.04
09-07-2025 22:401.7-0.04
09-07-2025 22:301.72-0.05
09-07-2025 22:201.74-0.08
09-07-2025 22:101.79-0.09
09-07-2025 22:001.86-0.09
09-07-2025 21:501.94-0.1
09-07-2025 21:402.04-0.11
09-07-2025 21:302.15-0.12
09-07-2025 21:202.28-0.12
09-07-2025 21:102.43-0.12
09-07-2025 21:002.57-0.13
09-07-2025 20:502.73-0.13
09-07-2025 20:402.89-0.15
09-07-2025 20:303.05-0.17
09-07-2025 20:203.25-0.17
09-07-2025 20:103.43-0.17
09-07-2025 20:003.63-0.17
09-07-2025 19:503.82-0.18
09-07-2025 19:404.02-0.18
09-07-2025 19:304.24-0.17
09-07-2025 19:204.44-0.17
09-07-2025 19:104.66-0.15
09-07-2025 19:004.86-0.15
09-07-2025 18:505.04-0.16
09-07-2025 18:405.23-0.16
09-07-2025 18:305.43-0.13
09-07-2025 18:205.6-0.14
09-07-2025 18:105.77-0.13
09-07-2025 18:005.94-0.11
09-07-2025 17:506.07-0.11
09-07-2025 17:406.22-0.08
09-07-2025 17:306.34-0.07
09-07-2025 17:206.43-0.07
09-07-2025 17:106.52-0.05
09-07-2025 17:006.59-0.04
09-07-2025 16:506.62-0.05
09-07-2025 16:406.64-0.04
09-07-2025 16:306.67-0.02
09-07-2025 16:206.66-0.02
09-07-2025 16:106.62-0.01
09-07-2025 16:006.58-0.01
09-07-2025 15:506.5-0.01
09-07-2025 15:406.42-0.01
09-07-2025 15:306.31-0.01
09-07-2025 15:206.19-0.01
09-07-2025 15:106.05-0.02
09-07-2025 15:005.91-0.01
09-07-2025 14:505.73-0.02
09-07-2025 14:405.57-0.01
09-07-2025 14:305.38-0.03
09-07-2025 14:205.21-0
09-07-2025 14:105-0.02
09-07-2025 14:004.82-0
09-07-2025 13:504.62-0
09-07-2025 13:404.41-0.01
09-07-2025 13:304.230.02
09-07-2025 13:204-0.01
09-07-2025 13:103.8-0.01
09-07-2025 13:003.610
09-07-2025 12:503.42-0
09-07-2025 12:403.22-0.01
09-07-2025 12:303.060.01
09-07-2025 12:202.86-0.02
09-07-2025 12:102.7-0.03
09-07-2025 12:002.55-0.03
09-07-2025 11:502.42-0.03
09-07-2025 11:402.29-0.03
09-07-2025 11:302.19-0.03
09-07-2025 11:202.08-0.04
09-07-2025 11:102-0.05
09-07-2025 11:001.94-0.05
09-07-2025 10:501.91-0.04
09-07-2025 10:401.87-0.05
09-07-2025 10:301.85-0.06
09-07-2025 10:201.86-0.05
09-07-2025 10:101.88-0.06
09-07-2025 10:001.9-0.07
09-07-2025 09:501.94-0.08
09-07-2025 09:402.01-0.08
09-07-2025 09:202.17-0.09
09-07-2025 09:102.27-0.11
09-07-2025 09:002.4-0.09
09-07-2025 08:502.52-0.09
09-07-2025 08:402.64-0.11
09-07-2025 08:302.78-0.12
09-07-2025 08:202.93-0.13
09-07-2025 08:103.09-0.13
09-07-2025 08:003.27-0.12
09-07-2025 07:503.41-0.15
09-07-2025 07:403.6-0.15
09-07-2025 07:303.77-0.15
09-07-2025 07:203.95-0.15
09-07-2025 07:104.14-0.14
09-07-2025 07:004.34-0.13
09-07-2025 06:504.51-0.14
09-07-2025 06:404.68-0.15
09-07-2025 06:304.86-0.14
09-07-2025 06:205.02-0.14
09-07-2025 06:105.2-0.13
09-07-2025 06:005.36-0.12
09-07-2025 05:505.51-0.12
09-07-2025 05:405.64-0.11
09-07-2025 05:305.76-0.11
09-07-2025 05:205.89-0.09
09-07-2025 05:106-0.08
09-07-2025 05:006.09-0.08
09-07-2025 04:506.16-0.07
09-07-2025 04:406.24-0.05
09-07-2025 04:306.28-0.04
09-07-2025 04:206.32-0.02
09-07-2025 04:106.34-0.01
09-07-2025 04:006.330
09-07-2025 03:506.320.02
09-07-2025 03:406.30.04
09-07-2025 03:306.230.04
09-07-2025 03:206.170.04
09-07-2025 03:106.070.04
09-07-2025 03:005.950.02
09-07-2025 02:505.840.03
09-07-2025 02:405.720.04
09-07-2025 02:305.580.04
09-07-2025 02:205.440.05
09-07-2025 02:105.270.04
09-07-2025 02:005.10.03
09-07-2025 01:504.910.02
09-07-2025 01:404.730.02
09-07-2025 01:304.540.01
09-07-2025 01:204.380.04
09-07-2025 01:104.190.03
09-07-2025 01:004.020.04
09-07-2025 00:503.840.04
09-07-2025 00:403.660.04
09-07-2025 00:303.490.05
09-07-2025 00:203.310.04
09-07-2025 00:103.140.03