| 満潮 | 干潮 | 満潮 | 干潮 |
|
21
(日) |
01:14 | 08:13 | 14:57 | 20:01 |
| 118cm | 32cm | 110cm | 76cm | |
|
||||
日立（茨城）2028年05月21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 |
|---|---|---|---|
| 5/21 00:00 | 112.2 | ↑1.3 | |
| 5/21 00:10 | 113.4 | ↑1.2 | |
| 5/21 00:20 | 114.4 | ↑1.0 | |
| 5/21 00:30 | 115.3 | ↑0.9 | |
| 5/21 00:40 | 116.0 | ↑0.7 | |
| 5/21 00:50 | 116.5 | ↑0.5 | |
| 5/21 01:00 | 116.9 | ↑0.4 | |
| 5/21 01:10 | 117.0 | ↑0.1 | 満潮 |
| 5/21 01:20 | 117.0 | 0 | |
| 5/21 01:30 | 116.8 | ↓-0.2 | |
| 5/21 01:40 | 116.4 | ↓-0.4 | |
| 5/21 01:50 | 115.7 | ↓-0.7 | |
| 5/21 02:00 | 114.9 | ↓-0.8 | |
| 5/21 02:10 | 113.9 | ↓-1.0 | |
| 5/21 02:20 | 112.7 | ↓-1.2 | |
| 5/21 02:30 | 111.3 | ↓-1.4 | |
| 5/21 02:40 | 109.7 | ↓-1.6 | |
| 5/21 02:50 | 107.8 | ↓-1.9 | |
| 5/21 03:00 | 105.8 | ↓-2.0 | |
| 5/21 03:10 | 103.6 | ↓-2.2 | |
| 5/21 03:20 | 101.3 | ↓-2.3 | |
| 5/21 03:30 | 98.7 | ↓-2.6 | |
| 5/21 03:40 | 96.0 | ↓-2.7 | |
| 5/21 03:50 | 93.1 | ↓-2.9 | |
| 5/21 04:00 | 90.1 | ↓-3.0 | |
| 5/21 04:10 | 87.0 | ↓-3.1 | |
| 5/21 04:20 | 83.8 | ↓-3.2 | |
| 5/21 04:30 | 80.6 | ↓-3.2 | |
| 5/21 04:40 | 77.2 | ↓-3.4 | 最大潮位差 |
| 5/21 04:50 | 73.9 | ↓-3.3 | |
| 5/21 05:00 | 70.6 | ↓-3.3 | |
| 5/21 05:10 | 67.2 | ↓-3.4 | 最大潮位差 |
| 5/21 05:20 | 64.0 | ↓-3.2 | |
| 5/21 05:30 | 60.8 | ↓-3.2 | |
| 5/21 05:40 | 57.6 | ↓-3.2 | |
| 5/21 05:50 | 54.6 | ↓-3.0 | |
| 5/21 06:00 | 51.8 | ↓-2.8 | |
| 5/21 06:10 | 49.0 | ↓-2.8 | |
| 5/21 06:20 | 46.5 | ↓-2.5 | |
| 5/21 06:30 | 44.1 | ↓-2.4 | |
| 5/21 06:40 | 41.9 | ↓-2.2 | |
| 5/21 06:50 | 39.9 | ↓-2.0 | |
| 5/21 07:00 | 38.1 | ↓-1.8 | |
| 5/21 07:10 | 36.5 | ↓-1.6 | |
| 5/21 07:20 | 35.1 | ↓-1.4 | |
| 5/21 07:30 | 34.0 | ↓-1.1 | |
| 5/21 07:40 | 33.1 | ↓-0.9 | |
| 5/21 07:50 | 32.5 | ↓-0.6 | |
| 5/21 08:00 | 32.1 | ↓-0.4 | |
| 5/21 08:10 | 31.9 | ↓-0.2 | 干潮 |
| 5/21 08:20 | 32.0 | ↑0.1 | |
| 5/21 08:30 | 32.3 | ↑0.3 | |
| 5/21 08:40 | 32.9 | ↑0.6 | |
| 5/21 08:50 | 33.7 | ↑0.8 | |
| 5/21 09:00 | 34.7 | ↑1.0 | |
| 5/21 09:10 | 36.0 | ↑1.3 | |
| 5/21 09:20 | 37.6 | ↑1.6 | |
| 5/21 09:30 | 39.3 | ↑1.7 | |
| 5/21 09:40 | 41.3 | ↑2.0 | |
| 5/21 09:50 | 43.5 | ↑2.2 | |
| 5/21 10:00 | 45.8 | ↑2.3 | |
| 5/21 10:10 | 48.3 | ↑2.5 | |
| 5/21 10:20 | 51.0 | ↑2.7 | |
| 5/21 10:30 | 53.8 | ↑2.8 | |
| 5/21 10:40 | 56.7 | ↑2.9 | |
| 5/21 10:50 | 59.7 | ↑3.0 | |
| 5/21 11:00 | 62.8 | ↑3.1 | |
| 5/21 11:10 | 65.9 | ↑3.1 | |
| 5/21 11:20 | 69.0 | ↑3.1 | |
| 5/21 11:30 | 72.1 | ↑3.1 | |
| 5/21 11:40 | 75.2 | ↑3.1 | |
| 5/21 11:50 | 78.2 | ↑3.0 | |
| 5/21 12:00 | 81.1 | ↑2.9 | |
| 5/21 12:10 | 84.0 | ↑2.9 | |
| 5/21 12:20 | 86.8 | ↑2.8 | |
| 5/21 12:30 | 89.4 | ↑2.6 | |
| 5/21 12:40 | 91.9 | ↑2.5 | |
| 5/21 12:50 | 94.3 | ↑2.4 | |
| 5/21 13:00 | 96.6 | ↑2.3 | |
| 5/21 13:10 | 98.6 | ↑2.0 | |
| 5/21 13:20 | 100.5 | ↑1.9 | |
| 5/21 13:30 | 102.3 | ↑1.8 | |
| 5/21 13:40 | 103.8 | ↑1.5 | |
| 5/21 13:50 | 105.2 | ↑1.4 | |
| 5/21 14:00 | 106.4 | ↑1.2 | |
| 5/21 14:10 | 107.4 | ↑1.0 | |
| 5/21 14:20 | 108.2 | ↑0.8 | |
| 5/21 14:30 | 108.8 | ↑0.6 | |
| 5/21 14:40 | 109.2 | ↑0.4 | |
| 5/21 14:50 | 109.4 | ↑0.2 | 満潮 |
| 5/21 15:00 | 109.5 | ↑0.1 | |
| 5/21 15:10 | 109.3 | ↓-0.2 | |
| 5/21 15:20 | 108.9 | ↓-0.4 | |
| 5/21 15:30 | 108.3 | ↓-0.6 | |
| 5/21 15:40 | 107.6 | ↓-0.7 | |
| 5/21 15:50 | 106.7 | ↓-0.9 | |
| 5/21 16:00 | 105.6 | ↓-1.1 | |
| 5/21 16:10 | 104.3 | ↓-1.3 | |
| 5/21 16:20 | 103.0 | ↓-1.3 | |
| 5/21 16:30 | 101.5 | ↓-1.5 | |
| 5/21 16:40 | 99.9 | ↓-1.6 | |
| 5/21 16:50 | 98.2 | ↓-1.7 | |
| 5/21 17:00 | 96.5 | ↓-1.7 | |
| 5/21 17:10 | 94.7 | ↓-1.8 | |
| 5/21 17:20 | 93.0 | ↓-1.7 | |
| 5/21 17:30 | 91.2 | ↓-1.8 | |
| 5/21 17:40 | 89.4 | ↓-1.8 | |
| 5/21 17:50 | 87.7 | ↓-1.7 | |
| 5/21 18:00 | 86.1 | ↓-1.6 | |
| 5/21 18:10 | 84.5 | ↓-1.6 | |
| 5/21 18:20 | 83.1 | ↓-1.4 | |
| 5/21 18:30 | 81.7 | ↓-1.4 | |
| 5/21 18:40 | 80.5 | ↓-1.2 | |
| 5/21 18:50 | 79.3 | ↓-1.2 | |
| 5/21 19:00 | 78.4 | ↓-0.9 | |
| 5/21 19:10 | 77.5 | ↓-0.9 | |
| 5/21 19:20 | 76.8 | ↓-0.7 | |
| 5/21 19:30 | 76.3 | ↓-0.5 | |
| 5/21 19:40 | 75.9 | ↓-0.4 | |
| 5/21 19:50 | 75.6 | ↓-0.3 | |
| 5/21 20:00 | 75.6 | 0 | 干潮 |
| 5/21 20:10 | 75.6 | 0 | |
| 5/21 20:20 | 75.9 | ↑0.3 | |
| 5/21 20:30 | 76.3 | ↑0.4 | |
| 5/21 20:40 | 76.8 | ↑0.5 | |
| 5/21 20:50 | 77.5 | ↑0.7 | |
| 5/21 21:00 | 78.4 | ↑0.9 | |
| 5/21 21:10 | 79.4 | ↑1.0 | |
| 5/21 21:20 | 80.6 | ↑1.2 | |
| 5/21 21:30 | 81.9 | ↑1.3 | |
| 5/21 21:40 | 83.4 | ↑1.5 | |
| 5/21 21:50 | 85.0 | ↑1.6 | |
| 5/21 22:00 | 86.7 | ↑1.7 | |
| 5/21 22:10 | 88.5 | ↑1.8 | |
| 5/21 22:20 | 90.4 | ↑1.9 | |
| 5/21 22:30 | 92.4 | ↑2.0 | |
| 5/21 22:40 | 94.5 | ↑2.1 | |
| 5/21 22:50 | 96.6 | ↑2.1 | |
| 5/21 23:00 | 98.8 | ↑2.2 | |
| 5/21 23:10 | 100.9 | ↑2.1 | |
| 5/21 23:20 | 103.0 | ↑2.1 | |
| 5/21 23:30 | 105.1 | ↑2.1 | |
| 5/21 23:40 | 107.2 | ↑2.1 | |
| 5/21 23:50 | 109.1 | ↑1.9 |