| 満潮 | 干潮 | 満潮 | 干潮 |
|
18
(日) |
01:13 | 08:08 | 14:49 | 19:58 |
| 119cm | 28cm | 108cm | 70cm | |
|
||||
日立（茨城）2031年05月18日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。
| 時刻 | 潮位 | 高低差 | 各ポイント |
|---|---|---|---|
| 5/18 00:00 | 113.1 | ↑1.5 | |
| 5/18 00:10 | 114.4 | ↑1.3 | |
| 5/18 00:20 | 115.5 | ↑1.1 | |
| 5/18 00:30 | 116.4 | ↑0.9 | |
| 5/18 00:40 | 117.1 | ↑0.7 | |
| 5/18 00:50 | 117.7 | ↑0.6 | |
| 5/18 01:00 | 118.0 | ↑0.3 | |
| 5/18 01:10 | 118.2 | ↑0.2 | 満潮 |
| 5/18 01:20 | 118.1 | ↓-0.1 | |
| 5/18 01:30 | 117.8 | ↓-0.3 | |
| 5/18 01:40 | 117.3 | ↓-0.5 | |
| 5/18 01:50 | 116.6 | ↓-0.7 | |
| 5/18 02:00 | 115.7 | ↓-0.9 | |
| 5/18 02:10 | 114.5 | ↓-1.2 | |
| 5/18 02:20 | 113.1 | ↓-1.4 | |
| 5/18 02:30 | 111.4 | ↓-1.7 | |
| 5/18 02:40 | 109.6 | ↓-1.8 | |
| 5/18 02:50 | 107.5 | ↓-2.1 | |
| 5/18 03:00 | 105.2 | ↓-2.3 | |
| 5/18 03:10 | 102.7 | ↓-2.5 | |
| 5/18 03:20 | 100.0 | ↓-2.7 | |
| 5/18 03:30 | 97.1 | ↓-2.9 | |
| 5/18 03:40 | 94.0 | ↓-3.1 | |
| 5/18 03:50 | 90.8 | ↓-3.2 | |
| 5/18 04:00 | 87.5 | ↓-3.3 | |
| 5/18 04:10 | 84.1 | ↓-3.4 | |
| 5/18 04:20 | 80.6 | ↓-3.5 | |
| 5/18 04:30 | 77.1 | ↓-3.5 | |
| 5/18 04:40 | 73.5 | ↓-3.6 | 最大潮位差 |
| 5/18 04:50 | 69.9 | ↓-3.6 | 最大潮位差 |
| 5/18 05:00 | 66.4 | ↓-3.5 | |
| 5/18 05:10 | 62.9 | ↓-3.5 | |
| 5/18 05:20 | 59.4 | ↓-3.5 | |
| 5/18 05:30 | 56.1 | ↓-3.3 | |
| 5/18 05:40 | 52.8 | ↓-3.3 | |
| 5/18 05:50 | 49.7 | ↓-3.1 | |
| 5/18 06:00 | 46.8 | ↓-2.9 | |
| 5/18 06:10 | 44.0 | ↓-2.8 | |
| 5/18 06:20 | 41.3 | ↓-2.7 | |
| 5/18 06:30 | 38.9 | ↓-2.4 | |
| 5/18 06:40 | 36.7 | ↓-2.2 | |
| 5/18 06:50 | 34.7 | ↓-2.0 | |
| 5/18 07:00 | 32.9 | ↓-1.8 | |
| 5/18 07:10 | 31.3 | ↓-1.6 | |
| 5/18 07:20 | 30.0 | ↓-1.3 | |
| 5/18 07:30 | 28.9 | ↓-1.1 | |
| 5/18 07:40 | 28.1 | ↓-0.8 | |
| 5/18 07:50 | 27.5 | ↓-0.6 | |
| 5/18 08:00 | 27.2 | ↓-0.3 | 干潮 |
| 5/18 08:10 | 27.1 | ↓-0.1 | |
| 5/18 08:20 | 27.3 | ↑0.2 | |
| 5/18 08:30 | 27.8 | ↑0.5 | |
| 5/18 08:40 | 28.6 | ↑0.8 | |
| 5/18 08:50 | 29.6 | ↑1.0 | |
| 5/18 09:00 | 30.8 | ↑1.2 | |
| 5/18 09:10 | 32.3 | ↑1.5 | |
| 5/18 09:20 | 34.1 | ↑1.8 | |
| 5/18 09:30 | 36.1 | ↑2.0 | |
| 5/18 09:40 | 38.3 | ↑2.2 | |
| 5/18 09:50 | 40.6 | ↑2.3 | |
| 5/18 10:00 | 43.2 | ↑2.6 | |
| 5/18 10:10 | 45.9 | ↑2.7 | |
| 5/18 10:20 | 48.8 | ↑2.9 | |
| 5/18 10:30 | 51.7 | ↑2.9 | |
| 5/18 10:40 | 54.8 | ↑3.1 | |
| 5/18 10:50 | 57.9 | ↑3.1 | |
| 5/18 11:00 | 61.1 | ↑3.2 | |
| 5/18 11:10 | 64.3 | ↑3.2 | |
| 5/18 11:20 | 67.5 | ↑3.2 | |
| 5/18 11:30 | 70.6 | ↑3.1 | |
| 5/18 11:40 | 73.7 | ↑3.1 | |
| 5/18 11:50 | 76.8 | ↑3.1 | |
| 5/18 12:00 | 79.8 | ↑3.0 | |
| 5/18 12:10 | 82.7 | ↑2.9 | |
| 5/18 12:20 | 85.4 | ↑2.7 | |
| 5/18 12:30 | 88.1 | ↑2.7 | |
| 5/18 12:40 | 90.6 | ↑2.5 | |
| 5/18 12:50 | 93.0 | ↑2.4 | |
| 5/18 13:00 | 95.2 | ↑2.2 | |
| 5/18 13:10 | 97.2 | ↑2.0 | |
| 5/18 13:20 | 99.1 | ↑1.9 | |
| 5/18 13:30 | 100.8 | ↑1.7 | |
| 5/18 13:40 | 102.3 | ↑1.5 | |
| 5/18 13:50 | 103.6 | ↑1.3 | |
| 5/18 14:00 | 104.8 | ↑1.2 | |
| 5/18 14:10 | 105.7 | ↑0.9 | |
| 5/18 14:20 | 106.4 | ↑0.7 | |
| 5/18 14:30 | 106.9 | ↑0.5 | |
| 5/18 14:40 | 107.1 | ↑0.2 | 満潮 |
| 5/18 14:50 | 107.2 | ↑0.1 | |
| 5/18 15:00 | 107.0 | ↓-0.2 | |
| 5/18 15:10 | 106.7 | ↓-0.3 | |
| 5/18 15:20 | 106.1 | ↓-0.6 | |
| 5/18 15:30 | 105.3 | ↓-0.8 | |
| 5/18 15:40 | 104.3 | ↓-1.0 | |
| 5/18 15:50 | 103.2 | ↓-1.1 | |
| 5/18 16:00 | 101.9 | ↓-1.3 | |
| 5/18 16:10 | 100.4 | ↓-1.5 | |
| 5/18 16:20 | 98.9 | ↓-1.5 | |
| 5/18 16:30 | 97.2 | ↓-1.7 | |
| 5/18 16:40 | 95.4 | ↓-1.8 | |
| 5/18 16:50 | 93.5 | ↓-1.9 | |
| 5/18 17:00 | 91.7 | ↓-1.8 | |
| 5/18 17:10 | 89.8 | ↓-1.9 | |
| 5/18 17:20 | 87.9 | ↓-1.9 | |
| 5/18 17:30 | 86.0 | ↓-1.9 | |
| 5/18 17:40 | 84.1 | ↓-1.9 | |
| 5/18 17:50 | 82.3 | ↓-1.8 | |
| 5/18 18:00 | 80.6 | ↓-1.7 | |
| 5/18 18:10 | 79.0 | ↓-1.6 | |
| 5/18 18:20 | 77.5 | ↓-1.5 | |
| 5/18 18:30 | 76.1 | ↓-1.4 | |
| 5/18 18:40 | 74.8 | ↓-1.3 | |
| 5/18 18:50 | 73.6 | ↓-1.2 | |
| 5/18 19:00 | 72.6 | ↓-1.0 | |
| 5/18 19:10 | 71.8 | ↓-0.8 | |
| 5/18 19:20 | 71.1 | ↓-0.7 | |
| 5/18 19:30 | 70.5 | ↓-0.6 | |
| 5/18 19:40 | 70.1 | ↓-0.4 | |
| 5/18 19:50 | 69.9 | ↓-0.2 | 干潮 |
| 5/18 20:00 | 69.9 | 0 | |
| 5/18 20:10 | 70.0 | ↑0.1 | |
| 5/18 20:20 | 70.3 | ↑0.3 | |
| 5/18 20:30 | 70.8 | ↑0.5 | |
| 5/18 20:40 | 71.5 | ↑0.7 | |
| 5/18 20:50 | 72.3 | ↑0.8 | |
| 5/18 21:00 | 73.4 | ↑1.1 | |
| 5/18 21:10 | 74.6 | ↑1.2 | |
| 5/18 21:20 | 76.0 | ↑1.4 | |
| 5/18 21:30 | 77.6 | ↑1.6 | |
| 5/18 21:40 | 79.3 | ↑1.7 | |
| 5/18 21:50 | 81.1 | ↑1.8 | |
| 5/18 22:00 | 83.1 | ↑2.0 | |
| 5/18 22:10 | 85.2 | ↑2.1 | |
| 5/18 22:20 | 87.5 | ↑2.3 | |
| 5/18 22:30 | 89.7 | ↑2.2 | |
| 5/18 22:40 | 92.1 | ↑2.4 | |
| 5/18 22:50 | 94.5 | ↑2.4 | |
| 5/18 23:00 | 96.9 | ↑2.4 | |
| 5/18 23:10 | 99.3 | ↑2.4 | |
| 5/18 23:20 | 101.7 | ↑2.4 | |
| 5/18 23:30 | 104.1 | ↑2.4 | |
| 5/18 23:40 | 106.4 | ↑2.3 | |
| 5/18 23:50 | 108.5 | ↑2.1 |