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 20:506.73-0.08
 Next HWNext LW
09:18, 6.46 03:12, 1.94
Date Highest 2026 Date Lowest 2026
03-02 8.22m 19-04 0.29m
Time (GMT)ElevationResidual
11-07-2025 00:001.54-0.02
10-07-2025 23:501.48-0.04
10-07-2025 23:401.44-0.05
10-07-2025 23:301.42-0.06
10-07-2025 23:201.43-0.07
10-07-2025 23:101.46-0.07
10-07-2025 23:001.5-0.08
10-07-2025 22:501.56-0.09
10-07-2025 22:401.64-0.09
10-07-2025 22:301.75-0.09
10-07-2025 22:201.85-0.1
10-07-2025 22:102-0.09
10-07-2025 22:002.13-0.11
10-07-2025 21:502.28-0.12
10-07-2025 21:402.44-0.13
10-07-2025 21:302.62-0.13
10-07-2025 21:202.81-0.14
10-07-2025 21:103-0.14
10-07-2025 21:003.18-0.17
10-07-2025 20:503.37-0.19
10-07-2025 20:403.59-0.19
10-07-2025 20:303.81-0.19
10-07-2025 20:204.04-0.18
10-07-2025 20:104.27-0.18
10-07-2025 20:004.49-0.18
10-07-2025 19:504.71-0.18
10-07-2025 19:404.91-0.19
10-07-2025 19:305.13-0.19
10-07-2025 19:205.34-0.18
10-07-2025 19:105.55-0.17
10-07-2025 19:005.76-0.15
10-07-2025 18:505.92-0.16
10-07-2025 18:406.09-0.15
10-07-2025 18:306.26-0.13
10-07-2025 18:206.39-0.13
10-07-2025 18:106.52-0.13
10-07-2025 18:006.64-0.1
10-07-2025 17:506.75-0.08
10-07-2025 17:406.82-0.08
10-07-2025 17:306.87-0.07
10-07-2025 17:206.9-0.05
10-07-2025 17:106.91-0.05
10-07-2025 17:006.89-0.05
10-07-2025 16:506.85-0.05
10-07-2025 16:406.79-0.05
10-07-2025 16:306.72-0.04
10-07-2025 16:206.61-0.05
10-07-2025 16:106.51-0.03
10-07-2025 16:006.38-0.03
10-07-2025 15:506.23-0.03
10-07-2025 15:406.07-0.02
10-07-2025 15:305.89-0.02
10-07-2025 15:205.7-0.02
10-07-2025 15:105.52-0
10-07-2025 15:005.31-0
10-07-2025 14:505.10
10-07-2025 14:404.880.01
10-07-2025 14:304.650
10-07-2025 14:204.420
10-07-2025 14:104.20
10-07-2025 14:003.97-0
10-07-2025 13:503.74-0
10-07-2025 13:403.51-0.02
10-07-2025 13:303.31-0
10-07-2025 13:203.09-0.02
10-07-2025 13:102.9-0.01
10-07-2025 13:002.69-0.03
10-07-2025 12:502.52-0.03
10-07-2025 12:402.34-0.05
10-07-2025 12:302.19-0.05
10-07-2025 12:202.07-0.04
10-07-2025 12:101.96-0.03
10-07-2025 12:001.85-0.04
10-07-2025 11:501.77-0.04
10-07-2025 11:401.72-0.02
10-07-2025 11:301.65-0.04
10-07-2025 11:201.62-0.04
10-07-2025 11:101.61-0.05
10-07-2025 11:001.61-0.06
10-07-2025 10:501.61-0.08
10-07-2025 10:401.66-0.07
10-07-2025 10:301.73-0.06
10-07-2025 10:201.8-0.08
10-07-2025 10:101.88-0.08
10-07-2025 10:001.99-0.08
10-07-2025 09:502.09-0.11
10-07-2025 09:402.21-0.12
10-07-2025 09:302.37-0.1
10-07-2025 09:202.52-0.11
10-07-2025 09:102.67-0.12
10-07-2025 09:002.82-0.15
10-07-2025 08:503.01-0.14
10-07-2025 08:403.18-0.16
10-07-2025 08:303.37-0.16
10-07-2025 08:203.57-0.16
10-07-2025 08:103.78-0.16
10-07-2025 08:003.98-0.16
10-07-2025 07:504.17-0.17
10-07-2025 07:404.39-0.15
10-07-2025 07:304.57-0.17
10-07-2025 07:204.78-0.16
10-07-2025 07:104.97-0.16
10-07-2025 07:005.16-0.16
10-07-2025 06:505.34-0.16
10-07-2025 06:405.52-0.15
10-07-2025 06:305.67-0.15
10-07-2025 06:205.83-0.14
10-07-2025 06:105.98-0.12
10-07-2025 06:006.09-0.13
10-07-2025 05:506.21-0.11
10-07-2025 05:406.31-0.1
10-07-2025 05:306.4-0.09
10-07-2025 05:206.46-0.08
10-07-2025 05:106.51-0.07
10-07-2025 05:006.54-0.06
10-07-2025 04:506.55-0.06
10-07-2025 04:406.54-0.04
10-07-2025 04:306.5-0.05
10-07-2025 04:206.45-0.04
10-07-2025 04:106.38-0.04
10-07-2025 04:006.29-0.04
10-07-2025 03:506.17-0.05
10-07-2025 03:406.05-0.05
10-07-2025 03:305.92-0.04
10-07-2025 03:205.79-0.02
10-07-2025 03:105.62-0.02
10-07-2025 03:005.44-0.03
10-07-2025 02:505.25-0.03
10-07-2025 02:405.07-0.03
10-07-2025 02:304.88-0.02
10-07-2025 02:204.67-0.02
10-07-2025 02:104.48-0
10-07-2025 02:004.28-0
10-07-2025 01:504.07-0.01
10-07-2025 01:403.86-0
10-07-2025 01:303.660
10-07-2025 01:203.460
10-07-2025 01:103.280.02
10-07-2025 01:003.10.02
10-07-2025 00:502.910.01
10-07-2025 00:402.72-0.01
10-07-2025 00:302.56-0
10-07-2025 00:202.41-0.01
10-07-2025 00:102.25-0.03