National Network of Regional Coastal Monitoring Programmes

« Dychwelid at fap am donau, llanw a gorsafoedd tywydd eraill.

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.

Second Severn Crossing

Tide Levels and Harmonics

 

 Blaenorol
Nesaf


Data llanw diweddaraf (Predicted Tide Table)

Amser (ASG)CodiadGweddill
14-01-2026 13:308.480.34
 Penllanw nesafDistyll nesaf
15:48, 9.94 22:24, 4.04
Dyddiad Uchaf 2026 Dyddiad Isaf 2026
06-01 13.49m 06-01 0.83m
Amser (ASG)CodiadGweddill
14-01-2026 13:308.480.34
14-01-2026 13:208.260.34
14-01-2026 13:108.040.36
14-01-2026 13:007.820.38
14-01-2026 12:507.610.42
14-01-2026 12:407.370.44
14-01-2026 12:307.140.47
14-01-2026 12:206.920.51
14-01-2026 12:106.710.55
14-01-2026 12:006.480.58
14-01-2026 11:506.250.59
14-01-2026 11:406.010.59
14-01-2026 11:305.780.58
14-01-2026 11:205.550.55
14-01-2026 11:105.340.53
14-01-2026 11:005.130.48
14-01-2026 10:504.910.4
14-01-2026 10:404.710.32
14-01-2026 10:304.510.22
14-01-2026 10:204.320.1
14-01-2026 10:104.170
14-01-2026 10:004.01-0.12
14-01-2026 09:503.89-0.22
14-01-2026 09:403.79-0.31
14-01-2026 09:203.69-0.44
14-01-2026 09:103.69-0.48
14-01-2026 09:003.73-0.48
14-01-2026 08:503.78-0.49
14-01-2026 08:403.9-0.43
14-01-2026 08:304.02-0.38
14-01-2026 08:204.17-0.33
14-01-2026 08:104.33-0.27
14-01-2026 08:004.5-0.22
14-01-2026 07:504.66-0.2
14-01-2026 07:404.86-0.16
14-01-2026 07:305.06-0.13
14-01-2026 07:205.25-0.13
14-01-2026 07:105.46-0.12
14-01-2026 07:005.68-0.13
14-01-2026 06:505.9-0.13
14-01-2026 06:406.14-0.15
14-01-2026 06:306.36-0.17
14-01-2026 06:206.59-0.2
14-01-2026 06:106.82-0.23
14-01-2026 06:007.06-0.25
14-01-2026 05:507.29-0.27
14-01-2026 05:407.54-0.27
14-01-2026 05:307.79-0.27
14-01-2026 05:208.02-0.27
14-01-2026 05:108.25-0.25
14-01-2026 05:008.48-0.23
14-01-2026 04:508.68-0.22
14-01-2026 04:408.89-0.19
14-01-2026 04:309.1-0.14
14-01-2026 04:209.3-0.09
14-01-2026 04:109.46-0.05
14-01-2026 04:009.6-0.01
14-01-2026 03:509.710.02
14-01-2026 03:409.810.04
14-01-2026 03:309.880.07
14-01-2026 03:209.930.1
14-01-2026 03:109.930.1
14-01-2026 03:009.910.1
14-01-2026 02:509.860.1
14-01-2026 02:409.80.1
14-01-2026 02:309.720.11
14-01-2026 02:209.610.1
14-01-2026 02:109.50.11
14-01-2026 02:009.370.11
14-01-2026 01:509.230.12
14-01-2026 01:409.070.13
14-01-2026 01:308.910.15
14-01-2026 01:208.750.17
14-01-2026 01:108.60.22
14-01-2026 01:008.410.24
14-01-2026 00:508.230.27
14-01-2026 00:408.040.31
14-01-2026 00:307.850.35
14-01-2026 00:207.660.4
14-01-2026 00:107.470.45
14-01-2026 00:007.280.51
13-01-2026 23:507.080.55
13-01-2026 23:406.890.61
13-01-2026 23:306.680.65
13-01-2026 23:206.490.69
13-01-2026 23:106.280.7
13-01-2026 23:006.070.7
13-01-2026 22:505.850.68
13-01-2026 22:405.660.67
13-01-2026 22:305.450.61
13-01-2026 22:205.270.57
13-01-2026 22:105.080.51
13-01-2026 22:004.90.43
13-01-2026 21:504.730.35
13-01-2026 21:404.550.24
13-01-2026 21:304.390.14
13-01-2026 21:204.260.05
13-01-2026 21:104.14-0.04
13-01-2026 21:004.04-0.13
13-01-2026 20:503.95-0.21
13-01-2026 20:403.89-0.27
13-01-2026 20:303.87-0.3
13-01-2026 20:203.9-0.3
13-01-2026 20:103.97-0.27
13-01-2026 20:004.05-0.24
13-01-2026 19:504.15-0.2
13-01-2026 19:404.29-0.15
13-01-2026 19:304.44-0.1
13-01-2026 19:204.61-0.06
13-01-2026 19:104.78-0.03
13-01-2026 19:004.97-0
13-01-2026 18:505.180.02
13-01-2026 18:405.380.02
13-01-2026 18:305.60.01
13-01-2026 18:205.81-0.01
13-01-2026 18:106.02-0.04
13-01-2026 18:006.26-0.06
13-01-2026 17:506.48-0.1
13-01-2026 17:406.71-0.13
13-01-2026 17:306.95-0.16
13-01-2026 17:207.2-0.18
13-01-2026 17:107.45-0.18
13-01-2026 17:007.7-0.18
13-01-2026 16:507.96-0.17
13-01-2026 16:408.21-0.15
13-01-2026 16:308.47-0.12
13-01-2026 16:208.69-0.11
13-01-2026 16:108.91-0.09
13-01-2026 16:009.11-0.07
13-01-2026 15:509.31-0.04
13-01-2026 15:409.50
13-01-2026 15:309.650.03
13-01-2026 15:209.810.07
13-01-2026 15:109.910.08
13-01-2026 15:009.990.09
13-01-2026 14:5010.040.1
13-01-2026 14:4010.060.09
13-01-2026 14:3010.080.11
13-01-2026 14:2010.070.12
13-01-2026 14:1010.040.13
13-01-2026 14:00100.15
13-01-2026 13:509.940.18
13-01-2026 13:409.860.2
13-01-2026 13:309.770.22
13-01-2026 13:209.650.24
13-01-2026 13:109.510.25
13-01-2026 13:009.360.27
13-01-2026 12:509.20.3
13-01-2026 12:409.020.31
13-01-2026 12:308.850.36
13-01-2026 12:208.670.4
13-01-2026 12:108.470.43
13-01-2026 12:008.270.48
13-01-2026 11:508.050.51
13-01-2026 11:407.830.56
13-01-2026 11:307.610.6
13-01-2026 11:207.40.66
13-01-2026 11:107.190.71
13-01-2026 11:006.980.76
13-01-2026 10:506.770.81
13-01-2026 10:406.560.84
13-01-2026 10:306.350.85
13-01-2026 10:206.120.84
13-01-2026 10:105.910.83
13-01-2026 10:005.680.78
13-01-2026 09:505.470.73
13-01-2026 09:405.280.68
13-01-2026 09:305.080.61
13-01-2026 09:204.910.55
13-01-2026 09:104.730.47
13-01-2026 09:004.550.37
13-01-2026 08:504.410.29
13-01-2026 08:404.290.23
13-01-2026 08:304.170.15
13-01-2026 08:204.080.09
13-01-2026 08:104.020.04
13-01-2026 08:004.020.04
13-01-2026 07:504.020.03
13-01-2026 07:404.090.07
13-01-2026 07:304.190.11
13-01-2026 07:204.30.15
13-01-2026 07:104.430.2
13-01-2026 07:004.580.23
13-01-2026 06:504.730.25
13-01-2026 06:404.890.25
13-01-2026 06:305.060.24
13-01-2026 06:205.250.23
13-01-2026 06:105.430.19
13-01-2026 06:005.610.14
13-01-2026 05:505.80.09
13-01-2026 05:4060.03
13-01-2026 05:306.19-0.04
13-01-2026 05:206.39-0.11
13-01-2026 05:106.6-0.17
13-01-2026 05:006.81-0.21
13-01-2026 04:507.04-0.25
13-01-2026 04:407.28-0.27
13-01-2026 04:307.53-0.27
13-01-2026 04:207.77-0.26
13-01-2026 04:108.02-0.25
13-01-2026 04:008.25-0.24
13-01-2026 03:508.48-0.23
13-01-2026 03:408.69-0.21
13-01-2026 03:308.89-0.2
13-01-2026 03:209.08-0.18
13-01-2026 03:109.25-0.17
13-01-2026 03:009.41-0.15
13-01-2026 02:509.52-0.16
13-01-2026 02:409.62-0.15
13-01-2026 02:309.7-0.15
13-01-2026 02:209.76-0.15
13-01-2026 02:109.8-0.15
13-01-2026 02:009.81-0.14
13-01-2026 01:509.8-0.14
13-01-2026 01:409.78-0.13
13-01-2026 01:309.74-0.11
13-01-2026 01:209.67-0.09
13-01-2026 01:109.6-0.06
13-01-2026 01:009.52-0.02
13-01-2026 00:509.410.01
13-01-2026 00:409.280.04
13-01-2026 00:309.150.08
13-01-2026 00:2090.12
13-01-2026 00:108.840.16
13-01-2026 00:008.690.22
12-01-2026 23:508.510.27
12-01-2026 23:408.340.33
12-01-2026 23:308.140.38
12-01-2026 23:207.950.44
12-01-2026 23:107.740.48
12-01-2026 23:007.540.54
12-01-2026 22:507.330.59
12-01-2026 22:407.130.65
12-01-2026 22:306.930.71
12-01-2026 22:206.740.76
12-01-2026 22:106.540.81
12-01-2026 22:006.340.84
12-01-2026 21:506.150.86
12-01-2026 21:405.950.86
12-01-2026 21:305.750.86
12-01-2026 21:205.570.84
12-01-2026 21:105.370.8
12-01-2026 21:005.190.77
12-01-2026 20:505.010.72
12-01-2026 20:404.830.65
12-01-2026 20:304.670.58
12-01-2026 20:204.530.52
12-01-2026 20:104.380.45
12-01-2026 20:004.270.39
12-01-2026 19:504.170.33
12-01-2026 19:404.10.29
12-01-2026 19:304.060.26
12-01-2026 19:204.050.24
12-01-2026 19:104.080.24
12-01-2026 19:004.150.25
12-01-2026 18:504.230.26
12-01-2026 18:404.340.27
12-01-2026 18:304.470.27
12-01-2026 18:204.610.26
12-01-2026 18:104.780.26
12-01-2026 18:004.930.21
12-01-2026 17:505.10.17
12-01-2026 17:405.280.12
12-01-2026 17:305.480.07
12-01-2026 17:205.690.02
12-01-2026 17:105.88-0.05
12-01-2026 17:006.1-0.11
12-01-2026 16:506.32-0.16
12-01-2026 16:406.54-0.23
12-01-2026 16:306.76-0.29
12-01-2026 16:206.98-0.34
12-01-2026 16:107.21-0.38
12-01-2026 16:007.44-0.41
12-01-2026 15:507.68-0.43
12-01-2026 15:407.93-0.44
12-01-2026 15:308.16-0.45
12-01-2026 15:208.4-0.45
12-01-2026 15:108.63-0.44
12-01-2026 15:008.85-0.43
12-01-2026 14:509.05-0.43
12-01-2026 14:409.26-0.41
12-01-2026 14:309.43-0.4
12-01-2026 14:209.6-0.37
12-01-2026 14:109.73-0.37
12-01-2026 14:009.87-0.33
12-01-2026 13:509.96-0.32
12-01-2026 13:4010.02-0.31
12-01-2026 13:3010.05-0.31
12-01-2026 13:2010.07-0.29
12-01-2026 13:1010.04-0.29