Tidal level Dorset Coast at Portland

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Latest recorded level -0.15m at 6:00am Sunday 19 January 2020.

Tidal levels at this location in the last 5 days

Now
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• Measured level
• Highest level on record 2.02m

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Observed data

DateTime	Value	Error
2020-01-19T06:00Z	-0.15	false
2020-01-19T05:45Z	-0.177	false
2020-01-19T05:30Z	-0.17	false
2020-01-19T05:15Z	-0.149	false
2020-01-19T05:00Z	-0.113	false
2020-01-19T04:45Z	-0.071	false
2020-01-19T04:30Z	-0.008	false
2020-01-19T04:15Z	0.048	false
2020-01-19T04:00Z	0.095	false
2020-01-19T03:45Z	0.158	false
2020-01-19T03:30Z	0.224	false
2020-01-19T03:15Z	0.295	false
2020-01-19T03:00Z	0.363	false
2020-01-19T02:45Z	0.404	false
2020-01-19T02:30Z	0.415	false
2020-01-19T02:15Z	0.478	false
2020-01-19T02:00Z	0.535	false
2020-01-19T01:45Z	0.571	false
2020-01-19T01:30Z	0.591	false
2020-01-19T01:15Z	0.608	false
2020-01-19T01:00Z	0.578	false
2020-01-19T00:45Z	0.578	false
2020-01-19T00:30Z	0.581	false
2020-01-19T00:15Z	0.545	false
2020-01-19T00:00Z	0.474	false
2020-01-18T23:45Z	0.402	false
2020-01-18T23:30Z	0.3	false
2020-01-18T23:15Z	0.2	false
2020-01-18T23:00Z	0.135	false
2020-01-18T22:45Z	0.011	false
2020-01-18T22:30Z	-0.056	false
2020-01-18T22:15Z	-0.136	false
2020-01-18T22:00Z	-0.184	false
2020-01-18T21:45Z	-0.208	false
2020-01-18T21:30Z	-0.237	false
2020-01-18T21:15Z	-0.244	false
2020-01-18T21:00Z	-0.209	false
2020-01-18T20:45Z	-0.176	false
2020-01-18T20:30Z	-0.131	false
2020-01-18T20:15Z	-0.099	false
2020-01-18T20:00Z	-0.09	false
2020-01-18T19:45Z	-0.067	false
2020-01-18T19:30Z	-0.03	false
2020-01-18T19:15Z	-0.042	false
2020-01-18T19:00Z	-0.076	false
2020-01-18T18:45Z	-0.089	false
2020-01-18T18:30Z	-0.132	false
2020-01-18T18:15Z	-0.162	false
2020-01-18T18:00Z	-0.206	false
2020-01-18T17:45Z	-0.26	false
2020-01-18T17:30Z	-0.31	false
2020-01-18T17:15Z	-0.303	false
2020-01-18T17:00Z	-0.286	false
2020-01-18T16:45Z	-0.214	false
2020-01-18T16:30Z	-0.15	false
2020-01-18T16:15Z	-0.099	false
2020-01-18T16:00Z	-0.02	false
2020-01-18T15:45Z	0.068	false
2020-01-18T15:30Z	0.141	false
2020-01-18T15:15Z	0.229	false
2020-01-18T15:00Z	0.311	false
2020-01-18T14:45Z	0.382	false
2020-01-18T14:30Z	0.456	false
2020-01-18T14:15Z	0.526	false
2020-01-18T14:00Z	0.591	false
2020-01-18T13:45Z	0.645	false
2020-01-18T13:30Z	0.714	false
2020-01-18T13:15Z	0.772	false
2020-01-18T13:00Z	0.803	false
2020-01-18T12:45Z	0.845	false
2020-01-18T12:30Z	0.857	false
2020-01-18T12:15Z	0.876	false
2020-01-18T12:00Z	0.866	false
2020-01-18T11:45Z	0.865	false
2020-01-18T11:30Z	0.813	false
2020-01-18T11:15Z	0.721	false
2020-01-18T11:00Z	0.661	false
2020-01-18T10:45Z	0.562	false
2020-01-18T10:30Z	0.462	false
2020-01-18T10:15Z	0.364	false
2020-01-18T10:00Z	0.269	false
2020-01-18T09:45Z	0.187	false
2020-01-18T09:30Z	0.124	false
2020-01-18T09:15Z	0.074	false
2020-01-18T09:00Z	0.022	false
2020-01-18T08:45Z	0.009	false
2020-01-18T08:30Z	0.044	false
2020-01-18T08:15Z	0.075	false
2020-01-18T08:00Z	0.139	false
2020-01-18T07:45Z	0.177	false
2020-01-18T07:30Z	0.201	false
2020-01-18T07:15Z	0.225	false
2020-01-18T07:00Z	0.248	false
2020-01-18T06:45Z	0.226	false
2020-01-18T06:30Z	0.185	false
2020-01-18T06:15Z	0.21	false
2020-01-18T06:00Z	0.192	false
2020-01-18T05:45Z	0.137	false
2020-01-18T05:30Z	0.085	false
2020-01-18T05:15Z	0.012	false
2020-01-18T05:00Z	-0.052	false
2020-01-18T04:45Z	-0.047	false
2020-01-18T04:30Z	-0.046	false
2020-01-18T04:15Z	-0.003	false
2020-01-18T04:00Z	0.044	false
2020-01-18T03:45Z	0.093	false
2020-01-18T03:30Z	0.188	false
2020-01-18T03:15Z	0.239	false
2020-01-18T03:00Z	0.324	false
2020-01-18T02:45Z	0.385	false
2020-01-18T02:30Z	0.487	false
2020-01-18T02:15Z	0.516	false
2020-01-18T02:00Z	0.583	false
2020-01-18T01:45Z	0.636	false
2020-01-18T01:30Z	0.701	false
2020-01-18T01:15Z	0.726	false
2020-01-18T01:00Z	0.744	false
2020-01-18T00:45Z	0.791	false
2020-01-18T00:30Z	0.811	false
2020-01-18T00:15Z	0.834	false
2020-01-18T00:00Z	0.84	false
2020-01-17T23:45Z	0.827	false
2020-01-17T23:30Z	0.796	false
2020-01-17T23:15Z	0.772	false
2020-01-17T23:00Z	0.761	false
2020-01-17T22:45Z	0.666	false
2020-01-17T22:30Z	0.574	false
2020-01-17T22:15Z	0.461	false
2020-01-17T22:00Z	0.357	false
2020-01-17T21:45Z	0.235	false
2020-01-17T21:30Z	0.182	false
2020-01-17T21:15Z	0.092	false
2020-01-17T21:00Z	-0.041	false
2020-01-17T20:45Z	-0.142	false
2020-01-17T20:30Z	-0.237	false
2020-01-17T20:15Z	-0.246	false
2020-01-17T20:00Z	-0.234	false
2020-01-17T19:45Z	-0.221	false
2020-01-17T19:30Z	-0.229	false
2020-01-17T19:15Z	-0.164	false
2020-01-17T19:00Z	-0.137	false
2020-01-17T18:45Z	-0.127	false
2020-01-17T18:30Z	-0.061	false
2020-01-17T18:15Z	-0.091	false
2020-01-17T18:00Z	-0.126	false
2020-01-17T17:45Z	-0.101	false
2020-01-17T17:30Z	-0.127	false
2020-01-17T17:15Z	-0.143	false
2020-01-17T17:00Z	-0.145	false
2020-01-17T16:45Z	-0.194	false
2020-01-17T16:30Z	-0.232	false
2020-01-17T16:15Z	-0.254	false
2020-01-17T16:00Z	-0.25	false
2020-01-17T15:45Z	-0.167	false
2020-01-17T15:30Z	-0.08	false
2020-01-17T15:15Z	-0.026	false
2020-01-17T15:00Z	0.046	false
2020-01-17T14:45Z	0.177	false
2020-01-17T14:30Z	0.307	false
2020-01-17T14:15Z	0.403	false
2020-01-17T14:00Z	0.497	false
2020-01-17T13:45Z	0.594	false
2020-01-17T13:30Z	0.692	false
2020-01-17T13:15Z	0.772	false
2020-01-17T13:00Z	0.849	false
2020-01-17T12:45Z	0.885	false
2020-01-17T12:30Z	0.961	false
2020-01-17T12:15Z	0.987	false
2020-01-17T12:00Z	1.016	false
2020-01-17T11:45Z	1.047	false
2020-01-17T11:30Z	1.044	false
2020-01-17T11:15Z	0.987	false
2020-01-17T11:00Z	0.967	false
2020-01-17T10:45Z	0.996	false
2020-01-17T10:30Z	0.981	false
2020-01-17T10:15Z	0.877	false
2020-01-17T10:00Z	0.797	false
2020-01-17T09:45Z	0.655	false
2020-01-17T09:30Z	0.519	false
2020-01-17T09:15Z	0.443	false
2020-01-17T09:00Z	0.356	false
2020-01-17T08:45Z	0.287	false
2020-01-17T08:30Z	0.175	false
2020-01-17T08:15Z	0.107	false
2020-01-17T08:00Z	0.062	false
2020-01-17T07:45Z	0.063	false
2020-01-17T07:30Z	0.071	false
2020-01-17T07:15Z	0.062	false
2020-01-17T07:00Z	0.057	false
2020-01-17T06:45Z	0.083	false
2020-01-17T06:30Z	0.108	false
2020-01-17T06:15Z	0.126	false
2020-01-17T06:00Z	0.104	false
2020-01-17T05:45Z	0.049	false
2020-01-17T05:30Z	0.034	false
2020-01-17T05:15Z	0.007	false
2020-01-17T05:00Z	-0.006	false
2020-01-17T04:45Z	-0.095	false
2020-01-17T04:30Z	-0.178	false
2020-01-17T04:15Z	-0.234	false
2020-01-17T04:00Z	-0.253	false
2020-01-17T03:45Z	-0.218	false
2020-01-17T03:30Z	-0.134	false
2020-01-17T03:15Z	-0.08	false
2020-01-17T03:00Z	0.041	false
2020-01-17T02:45Z	0.116	false
2020-01-17T02:30Z	0.211	false
2020-01-17T02:15Z	0.304	false
2020-01-17T02:00Z	0.394	false
2020-01-17T01:45Z	0.507	false
2020-01-17T01:30Z	0.582	false
2020-01-17T01:15Z	0.667	false
2020-01-17T01:00Z	0.752	false
2020-01-17T00:45Z	0.826	false
2020-01-17T00:30Z	0.889	false
2020-01-17T00:15Z	0.92	false
2020-01-17T00:00Z	0.954	false
2020-01-16T23:45Z	0.988	false
2020-01-16T23:30Z	1.009	false
2020-01-16T23:15Z	1.075	false
2020-01-16T23:00Z	1.054	false
2020-01-16T22:45Z	1.043	false
2020-01-16T22:30Z	0.991	false
2020-01-16T22:15Z	0.965	false
2020-01-16T22:00Z	0.918	false
2020-01-16T21:45Z	0.821	false
2020-01-16T21:30Z	0.661	false
2020-01-16T21:15Z	0.545	false
2020-01-16T21:00Z	0.434	false
2020-01-16T20:45Z	0.326	false
2020-01-16T20:30Z	0.241	false
2020-01-16T20:15Z	0.062	false
2020-01-16T20:00Z	-0.049	false
2020-01-16T19:45Z	-0.05	false
2020-01-16T19:30Z	-0.083	false
2020-01-16T19:15Z	-0.085	false
2020-01-16T19:00Z	-0.063	false
2020-01-16T18:45Z	-0.035	false
2020-01-16T18:30Z	-0.011	false
2020-01-16T18:15Z	0.052	false
2020-01-16T18:00Z	0.114	false
2020-01-16T17:45Z	0.12	false
2020-01-16T17:30Z	0.132	false
2020-01-16T17:15Z	0.125	false
2020-01-16T17:00Z	0.178	false
2020-01-16T16:45Z	0.182	false
2020-01-16T16:30Z	0.107	false
2020-01-16T16:15Z	0.052	false
2020-01-16T16:00Z	0.005	false
2020-01-16T15:45Z	0.027	false
2020-01-16T15:30Z	-0.005	false
2020-01-16T15:15Z	0.017	false
2020-01-16T15:00Z	0.045	false
2020-01-16T14:45Z	0.145	false
2020-01-16T14:30Z	0.26	false
2020-01-16T14:15Z	0.379	false
2020-01-16T14:00Z	0.458	false
2020-01-16T13:45Z	0.576	false
2020-01-16T13:30Z	0.72	false
2020-01-16T13:15Z	0.878	false
2020-01-16T13:00Z	0.97	false
2020-01-16T12:45Z	1.04	false
2020-01-16T12:30Z	1.145	false
2020-01-16T12:15Z	1.24	false
2020-01-16T12:00Z	1.314	false
2020-01-16T11:45Z	1.349	false
2020-01-16T11:30Z	1.369	false
2020-01-16T11:15Z	1.428	false
2020-01-16T11:00Z	1.409	false
2020-01-16T10:45Z	1.452	false
2020-01-16T10:30Z	1.415	false
2020-01-16T10:15Z	1.446	false
2020-01-16T10:00Z	1.373	false
2020-01-16T09:45Z	1.32	false
2020-01-16T09:30Z	1.208	false
2020-01-16T09:15Z	1.113	false
2020-01-16T09:00Z	0.964	false
2020-01-16T08:45Z	0.812	false
2020-01-16T08:30Z	0.682	false
2020-01-16T08:15Z	0.502	false
2020-01-16T08:00Z	0.357	false
2020-01-16T07:45Z	0.219	false
2020-01-16T07:30Z	0.106	false
2020-01-16T07:15Z	0.03	false
2020-01-16T07:00Z	-0.045	false
2020-01-16T06:45Z	-0.066	false
2020-01-16T06:30Z	-0.065	false
2020-01-16T06:15Z	-0.03	false
2020-01-16T06:00Z	-0.003	false
2020-01-16T05:45Z	0.009	false
2020-01-16T05:30Z	0.008	false
2020-01-16T05:15Z	-0.016	false
2020-01-16T05:00Z	-0.032	false
2020-01-16T04:45Z	-0.054	false
2020-01-16T04:30Z	-0.052	false
2020-01-16T04:15Z	-0.108	false
2020-01-16T04:00Z	-0.171	false
2020-01-16T03:45Z	-0.24	false
2020-01-16T03:30Z	-0.33	false
2020-01-16T03:15Z	-0.386	false
2020-01-16T03:00Z	-0.379	false
2020-01-16T02:45Z	-0.314	false
2020-01-16T02:30Z	-0.244	false
2020-01-16T02:15Z	-0.129	false
2020-01-16T02:00Z	-0.002	false
2020-01-16T01:45Z	0.114	false
2020-01-16T01:30Z	0.236	false
2020-01-16T01:15Z	0.379	false
2020-01-16T01:00Z	0.488	false
2020-01-16T00:45Z	0.599	false
2020-01-16T00:30Z	0.698	false
2020-01-16T00:15Z	0.784	false
2020-01-16T00:00Z	0.86	false
2020-01-15T23:45Z	0.932	false
2020-01-15T23:30Z	0.986	false
2020-01-15T23:15Z	1.049	false
2020-01-15T23:00Z	1.081	false
2020-01-15T22:45Z	1.114	false
2020-01-15T22:30Z	1.127	false
2020-01-15T22:15Z	1.147	false
2020-01-15T22:00Z	1.126	false
2020-01-15T21:45Z	1.103	false
2020-01-15T21:30Z	1.054	false
2020-01-15T21:15Z	0.989	false
2020-01-15T21:00Z	0.898	false
2020-01-15T20:45Z	0.772	false
2020-01-15T20:30Z	0.624	false
2020-01-15T20:15Z	0.443	false
2020-01-15T20:00Z	0.301	false
2020-01-15T19:45Z	0.144	false
2020-01-15T19:30Z	0.001	false
2020-01-15T19:15Z	-0.115	false
2020-01-15T19:00Z	-0.215	false
2020-01-15T18:45Z	-0.316	false
2020-01-15T18:30Z	-0.368	false
2020-01-15T18:15Z	-0.352	false
2020-01-15T18:00Z	-0.312	false
2020-01-15T17:45Z	-0.285	false
2020-01-15T17:30Z	-0.225	false
2020-01-15T17:15Z	-0.155	false
2020-01-15T17:00Z	-0.13	false
2020-01-15T16:45Z	-0.12	false
2020-01-15T16:30Z	-0.128	false
2020-01-15T16:15Z	-0.12	false
2020-01-15T16:00Z	-0.084	false
2020-01-15T15:45Z	-0.113	false
2020-01-15T15:30Z	-0.164	false
2020-01-15T15:15Z	-0.22	false
2020-01-15T15:00Z	-0.298	false
2020-01-15T14:45Z	-0.332	false
2020-01-15T14:30Z	-0.289	false
2020-01-15T14:15Z	-0.239	false
2020-01-15T14:00Z	-0.122	false
2020-01-15T13:45Z	0.018	false
2020-01-15T13:30Z	0.115	false
2020-01-15T13:15Z	0.285	false
2020-01-15T13:00Z	0.42	false
2020-01-15T12:45Z	0.564	false
2020-01-15T12:30Z	0.738	false
2020-01-15T12:15Z	0.845	false
2020-01-15T12:00Z	0.939	false
2020-01-15T11:45Z	1.038	false
2020-01-15T11:30Z	1.157	false
2020-01-15T11:15Z	1.216	false
2020-01-15T11:00Z	1.248	false
2020-01-15T10:45Z	1.256	false
2020-01-15T10:30Z	1.335	false
2020-01-15T10:15Z	1.32	false
2020-01-15T10:00Z	1.398	false
2020-01-15T09:45Z	1.405	false
2020-01-15T09:30Z	1.34	false
2020-01-15T09:15Z	1.31	false
2020-01-15T09:00Z	1.267	false
2020-01-15T08:45Z	1.199	false
2020-01-15T08:30Z	1.104	false
2020-01-15T08:15Z	1.024	false
2020-01-15T08:00Z	0.868	false
2020-01-15T07:45Z	0.675	false
2020-01-15T07:30Z	0.511	false
2020-01-15T07:15Z	0.31	false
2020-01-15T07:00Z	0.14	false
2020-01-15T06:45Z	-0.002	false
2020-01-15T06:30Z	-0.102	false
2020-01-15T06:15Z	-0.185	false
2020-01-15T06:00Z	-0.22	false
2020-01-15T05:45Z	-0.286	false
2020-01-15T05:30Z	-0.266	false
2020-01-15T05:15Z	-0.209	false
2020-01-15T05:00Z	-0.162	false
2020-01-15T04:45Z	-0.085	false
2020-01-15T04:30Z	-0.025	false
2020-01-15T04:15Z	-0.031	false
2020-01-15T04:00Z	-0.025	false
2020-01-15T03:45Z	0.009	false
2020-01-15T03:30Z	0.046	false
2020-01-15T03:15Z	-0.01	false
2020-01-15T03:00Z	-0.001	false
2020-01-15T02:45Z	-0.129	false
2020-01-15T02:30Z	-0.159	false
2020-01-15T02:15Z	-0.058	false
2020-01-15T02:00Z	-0.045	false
2020-01-15T01:45Z	-0.003	false
2020-01-15T01:30Z	0.156	false
2020-01-15T01:15Z	0.343	false
2020-01-15T01:00Z	0.438	false
2020-01-15T00:45Z	0.564	false
2020-01-15T00:30Z	0.793	false
2020-01-15T00:15Z	0.957	false
2020-01-15T00:00Z	1.102	false
2020-01-14T23:45Z	1.232	false
2020-01-14T23:30Z	1.281	false
2020-01-14T23:15Z	1.427	false
2020-01-14T23:00Z	1.516	false
2020-01-14T22:45Z	1.563	false
2020-01-14T22:30Z	1.613	false
2020-01-14T22:15Z	1.619	false
2020-01-14T22:00Z	1.659	false
2020-01-14T21:45Z	1.618	false
2020-01-14T21:30Z	1.612	false
2020-01-14T21:15Z	1.623	false
2020-01-14T21:00Z	1.571	false
2020-01-14T20:45Z	1.495	false
2020-01-14T20:30Z	1.475	false
2020-01-14T20:15Z	1.353	false
2020-01-14T20:00Z	1.214	false
2020-01-14T19:45Z	1.031	false
2020-01-14T19:30Z	0.936	false
2020-01-14T19:15Z	0.764	false
2020-01-14T19:00Z	0.625	false
2020-01-14T18:45Z	0.474	false
2020-01-14T18:30Z	0.327	false
2020-01-14T18:15Z	0.116	false
2020-01-14T18:00Z	0.032	false
2020-01-14T17:45Z	-0.042	false
2020-01-14T17:30Z	-0.086	false
2020-01-14T17:15Z	-0.087	false
2020-01-14T17:00Z	-0.047	false
2020-01-14T16:45Z	-0.025	false
2020-01-14T16:30Z	-0.026	false
2020-01-14T16:15Z	0.015	false
2020-01-14T16:00Z	0.029	false
2020-01-14T15:45Z	0.006	false
2020-01-14T15:30Z	-0.019	false
2020-01-14T15:15Z	-0.031	false
2020-01-14T15:00Z	-0.002	false
2020-01-14T14:45Z	-0.058	false
2020-01-14T14:30Z	-0.144	false
2020-01-14T14:15Z	-0.212	false
2020-01-14T14:00Z	-0.242	false
2020-01-14T13:45Z	-0.187	false
2020-01-14T13:30Z	-0.09	false
2020-01-14T13:15Z	0.031	false
2020-01-14T13:00Z	0.17	false
2020-01-14T12:45Z	0.34	false
2020-01-14T12:30Z	0.542	false
2020-01-14T12:15Z	0.67	false
2020-01-14T12:00Z	0.802	false
2020-01-14T11:45Z	0.892	false
2020-01-14T11:30Z	0.973	false
2020-01-14T11:15Z	1.087	false
2020-01-14T11:00Z	1.173	false
2020-01-14T10:45Z	1.253	false
2020-01-14T10:30Z	1.317	false
2020-01-14T10:30Z	1.317	false
2020-01-14T10:15Z	1.354	false
2020-01-14T10:00Z	1.376	false
2020-01-14T09:45Z	1.373	false
2020-01-14T09:30Z	1.424	false
2020-01-14T09:15Z	1.411	false
2020-01-14T09:00Z	1.408	false
2020-01-14T08:45Z	1.393	false
2020-01-14T08:30Z	1.356	false
2020-01-14T08:15Z	1.291	false
2020-01-14T08:00Z	1.203	false
2020-01-14T07:45Z	1.11	false
2020-01-14T07:30Z	0.983	false

Forecast data

Key information

• Station name: Portland
• Station ID: 3282
• Estuary/harbour: Dorset Coast
• Highest level on record: 2.02m on 14 February 2014
• Site datum: 0.00mAOD (what does this mean?)

How are tide levels in coastal and estuary areas measured?

Tide levels in coastal and estuary areas are shown in metres above mean sea level, or ordnance datum (mAOD).

Monitoring stations in these locations do have their own datum - a height in metres fixed relative to mean sea level. But, because of their location, these stations usually have the same datum as actual mean sea level. So it's expressed as zero metres.

How often are tide levels in coastal and estuary areas measured?

We use measuring stations like this one to collect water level data, usually once or twice a day. We collect data more frequently when there's a greater risk of flooding. That's why the graph might show a short time lag since the last measurement.

• View nearby measuring stations

• View the flood information service for England
• View your property's long term risk of flooding

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