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
13-01-2025 16:4080.49
 Penllanw nesafDistyll nesaf
19:09, 12.22 01:47, 2.01
Dyddiad Uchaf 2025 Dyddiad Isaf 2025
01-01 13.36m 03-01 1.22m
Amser (ASG)CodiadGweddill
13-01-2025 16:4080.49
13-01-2025 16:307.570.5
13-01-2025 16:207.170.52
13-01-2025 16:106.790.55
13-01-2025 16:006.40.56
13-01-2025 15:5060.54
13-01-2025 15:405.650.56
13-01-2025 15:305.290.55
13-01-2025 15:204.950.54
13-01-2025 15:104.550.47
13-01-2025 15:004.120.34
13-01-2025 14:503.710.21
13-01-2025 14:403.270.04
13-01-2025 14:302.88-0.11
13-01-2025 14:202.56-0.21
13-01-2025 14:102.26-0.33
13-01-2025 14:001.95-0.48
13-01-2025 13:501.67-0.64
13-01-2025 13:401.54-0.68
13-01-2025 13:301.54-0.64
13-01-2025 13:201.6-0.58
13-01-2025 13:101.71-0.51
13-01-2025 13:001.85-0.45
13-01-2025 12:502-0.41
13-01-2025 12:402.18-0.39
13-01-2025 12:302.38-0.38
13-01-2025 12:202.58-0.39
13-01-2025 12:102.77-0.43
13-01-2025 12:003.02-0.44
13-01-2025 11:503.24-0.49
13-01-2025 11:403.51-0.49
13-01-2025 11:303.79-0.5
13-01-2025 11:204.06-0.51
13-01-2025 11:104.34-0.51
13-01-2025 11:004.62-0.52
13-01-2025 10:504.91-0.52
13-01-2025 10:405.19-0.52
13-01-2025 10:305.49-0.51
13-01-2025 10:205.79-0.5
13-01-2025 10:106.11-0.46
13-01-2025 10:006.42-0.44
13-01-2025 09:506.74-0.42
13-01-2025 09:407.05-0.41
13-01-2025 09:307.39-0.38
13-01-2025 09:207.71-0.37
13-01-2025 09:108.05-0.36
13-01-2025 09:008.39-0.34
13-01-2025 08:508.75-0.32
13-01-2025 08:409.09-0.31
13-01-2025 08:309.48-0.26
13-01-2025 08:209.84-0.24
13-01-2025 08:1010.22-0.19
13-01-2025 08:0010.58-0.14
13-01-2025 07:5010.95-0.07
13-01-2025 07:4011.27-0.02
13-01-2025 07:3011.580.04
13-01-2025 07:2011.810.06
13-01-2025 07:1012.040.12
13-01-2025 07:0012.240.18
13-01-2025 06:5012.360.21
13-01-2025 06:4012.390.21
13-01-2025 06:3012.390.22
13-01-2025 06:2012.330.23
13-01-2025 06:1012.190.22
13-01-2025 06:0012.020.22
13-01-2025 05:5011.810.23
13-01-2025 05:4011.560.26
13-01-2025 05:3011.290.3
13-01-2025 05:2010.980.34
13-01-2025 05:1010.630.37
13-01-2025 05:0010.270.4
13-01-2025 04:509.880.43
13-01-2025 04:409.480.46
13-01-2025 04:309.080.5
13-01-2025 04:208.650.5
13-01-2025 04:108.210.49
13-01-2025 04:007.760.46
13-01-2025 03:507.310.43
13-01-2025 03:406.910.43
13-01-2025 03:306.520.42
13-01-2025 03:206.120.4
13-01-2025 03:105.730.38
13-01-2025 03:005.380.38
13-01-2025 02:505.030.37
13-01-2025 02:404.660.32
13-01-2025 02:304.270.24
13-01-2025 02:203.860.13
13-01-2025 02:103.45-0.01
13-01-2025 02:003.06-0.15
13-01-2025 01:502.72-0.25
13-01-2025 01:402.44-0.33
13-01-2025 01:302.12-0.49
13-01-2025 01:201.81-0.67
13-01-2025 01:101.63-0.75
13-01-2025 01:001.6-0.73
13-01-2025 00:501.66-0.65
13-01-2025 00:401.73-0.6
13-01-2025 00:301.86-0.53
13-01-2025 00:202.02-0.48
13-01-2025 00:102.2-0.43
13-01-2025 00:002.39-0.4
12-01-2025 23:502.58-0.41
12-01-2025 23:402.79-0.42
12-01-2025 23:303.01-0.43
12-01-2025 23:203.27-0.43
12-01-2025 23:103.52-0.44
12-01-2025 23:003.81-0.41
12-01-2025 22:504.09-0.41
12-01-2025 22:404.38-0.4
12-01-2025 22:304.67-0.4
12-01-2025 22:204.96-0.39
12-01-2025 22:105.25-0.38
12-01-2025 22:005.56-0.37
12-01-2025 21:505.86-0.36
12-01-2025 21:406.17-0.34
12-01-2025 21:306.47-0.33
12-01-2025 21:206.78-0.32
12-01-2025 21:107.11-0.3
12-01-2025 21:007.43-0.29
12-01-2025 20:507.76-0.28
12-01-2025 20:408.1-0.26
12-01-2025 20:308.43-0.25
12-01-2025 20:208.79-0.23
12-01-2025 20:109.17-0.18
12-01-2025 20:009.54-0.13
12-01-2025 19:509.92-0.07
12-01-2025 19:4010.28-0.01
12-01-2025 19:3010.630.04
12-01-2025 19:2010.980.11
12-01-2025 19:1011.280.16
12-01-2025 19:0011.530.19
12-01-2025 18:5011.750.23
12-01-2025 18:4011.940.26
12-01-2025 18:3012.050.27
12-01-2025 18:2012.080.24
12-01-2025 18:1012.060.21
12-01-2025 18:0011.990.18
12-01-2025 17:5011.870.15
12-01-2025 17:4011.70.12
12-01-2025 17:3011.480.09
12-01-2025 17:2011.260.11
12-01-2025 17:1011.020.14
12-01-2025 17:0010.740.17
12-01-2025 16:5010.430.21
12-01-2025 16:4010.10.24
12-01-2025 16:309.770.3
12-01-2025 16:209.410.34
12-01-2025 16:109.070.4
12-01-2025 16:008.690.43
12-01-2025 15:508.320.45
12-01-2025 15:407.930.46
12-01-2025 15:307.520.45
12-01-2025 15:207.160.46
12-01-2025 15:106.780.45
12-01-2025 15:006.440.46
12-01-2025 14:506.050.42
12-01-2025 14:405.70.41
12-01-2025 14:305.370.4
12-01-2025 14:205.030.38
12-01-2025 14:104.680.33
12-01-2025 14:004.310.24
12-01-2025 13:503.940.14
12-01-2025 13:403.560.01
12-01-2025 13:303.21-0.1
12-01-2025 13:202.88-0.23
12-01-2025 13:102.61-0.31
12-01-2025 13:002.35-0.43
12-01-2025 12:502.09-0.58
12-01-2025 12:401.89-0.7
12-01-2025 12:301.79-0.75
12-01-2025 12:201.8-0.73
12-01-2025 12:101.87-0.7
12-01-2025 12:001.98-0.66
12-01-2025 11:502.11-0.62
12-01-2025 11:402.27-0.6
12-01-2025 11:302.45-0.58
12-01-2025 11:202.64-0.57
12-01-2025 11:102.85-0.57
12-01-2025 11:003.05-0.57
12-01-2025 10:503.28-0.58
12-01-2025 10:403.53-0.56
12-01-2025 10:303.79-0.54
12-01-2025 10:204.06-0.52
12-01-2025 10:104.33-0.5
12-01-2025 10:004.59-0.49
12-01-2025 09:504.86-0.47
12-01-2025 09:405.16-0.43
12-01-2025 09:305.44-0.41
12-01-2025 09:205.74-0.38
12-01-2025 09:106.03-0.36
12-01-2025 09:006.33-0.34
12-01-2025 08:506.64-0.31
12-01-2025 08:406.96-0.29
12-01-2025 08:307.28-0.27
12-01-2025 08:207.59-0.26
12-01-2025 08:107.92-0.25
12-01-2025 08:008.26-0.23
12-01-2025 07:508.6-0.21
12-01-2025 07:408.96-0.18
12-01-2025 07:309.32-0.15
12-01-2025 07:209.65-0.12
12-01-2025 07:1010-0.09
12-01-2025 07:0010.33-0.06
12-01-2025 06:5010.63-0.03
12-01-2025 06:4010.920.01
12-01-2025 06:3011.170.03
12-01-2025 06:2011.390.06
12-01-2025 06:1011.570.08
12-01-2025 06:0011.720.11
12-01-2025 05:5011.80.12
12-01-2025 05:4011.820.11
12-01-2025 05:3011.790.1
12-01-2025 05:2011.720.1
12-01-2025 05:1011.610.1
12-01-2025 05:0011.440.1
12-01-2025 04:5011.260.12
12-01-2025 04:4011.040.15
12-01-2025 04:3010.780.17
12-01-2025 04:2010.50.2
12-01-2025 04:1010.190.22
12-01-2025 04:009.870.25
12-01-2025 03:509.520.26
12-01-2025 03:409.160.28
12-01-2025 03:308.80.3
12-01-2025 03:208.420.29
12-01-2025 03:108.040.28
12-01-2025 03:007.640.25
12-01-2025 02:507.250.22
12-01-2025 02:406.870.2
12-01-2025 02:306.520.2
12-01-2025 02:206.160.18
12-01-2025 02:105.820.17
12-01-2025 02:005.490.17
12-01-2025 01:505.190.19
12-01-2025 01:404.860.17
12-01-2025 01:304.540.14
12-01-2025 01:204.20.09
12-01-2025 01:103.870.02
12-01-2025 01:003.52-0.08
12-01-2025 00:503.22-0.16
12-01-2025 00:402.93-0.25
12-01-2025 00:302.69-0.32
12-01-2025 00:202.43-0.45
12-01-2025 00:102.19-0.58
12-01-2025 00:002.05-0.65
11-01-2025 23:501.99-0.68
11-01-2025 23:402.02-0.66
11-01-2025 23:302.09-0.64
11-01-2025 23:202.2-0.6
11-01-2025 23:102.34-0.56
11-01-2025 23:002.5-0.53
11-01-2025 22:502.66-0.52
11-01-2025 22:402.86-0.5
11-01-2025 22:303.06-0.49
11-01-2025 22:203.29-0.47
11-01-2025 22:103.52-0.45
11-01-2025 22:003.78-0.42
11-01-2025 21:504.05-0.38
11-01-2025 21:404.31-0.35
11-01-2025 21:304.57-0.34
11-01-2025 21:204.84-0.32
11-01-2025 21:105.13-0.28
11-01-2025 21:005.4-0.26
11-01-2025 20:505.69-0.23
11-01-2025 20:405.98-0.22
11-01-2025 20:306.28-0.2
11-01-2025 20:206.58-0.19
11-01-2025 20:106.89-0.17
11-01-2025 20:007.2-0.16
11-01-2025 19:507.51-0.16
11-01-2025 19:407.83-0.16
11-01-2025 19:308.16-0.15
11-01-2025 19:208.49-0.14
11-01-2025 19:108.85-0.11
11-01-2025 19:009.19-0.09
11-01-2025 18:509.51-0.08
11-01-2025 18:409.85-0.04
11-01-2025 18:3010.18-0.01
11-01-2025 18:2010.490.03
11-01-2025 18:1010.760.05
11-01-2025 18:00110.07
11-01-2025 17:5011.210.09
11-01-2025 17:4011.380.1
11-01-2025 17:3011.50.11
11-01-2025 17:2011.580.12
11-01-2025 17:1011.60.12
11-01-2025 17:0011.560.1
11-01-2025 16:5011.490.09
11-01-2025 16:4011.380.09
11-01-2025 16:3011.240.11
11-01-2025 16:2011.060.13
11-01-2025 16:1010.860.15