| 満潮 | 干潮 | 満潮 | 干潮 |
|
21
(日) |
01:09 | 08:08 | 14:46 | 19:55 |
| 112cm | 26cm | 99cm | 64cm | |
|
||||
那珂湊（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 | 107.1 | ↑1.5 | |
| 5/21 00:10 | 108.4 | ↑1.3 | |
| 5/21 00:20 | 109.5 | ↑1.1 | |
| 5/21 00:30 | 110.4 | ↑0.9 | |
| 5/21 00:40 | 111.1 | ↑0.7 | |
| 5/21 00:50 | 111.6 | ↑0.5 | |
| 5/21 01:00 | 111.9 | ↑0.3 | 満潮 |
| 5/21 01:10 | 111.9 | 0 | |
| 5/21 01:20 | 111.8 | ↓-0.1 | |
| 5/21 01:30 | 111.4 | ↓-0.4 | |
| 5/21 01:40 | 110.8 | ↓-0.6 | |
| 5/21 01:50 | 109.9 | ↓-0.9 | |
| 5/21 02:00 | 108.9 | ↓-1.0 | |
| 5/21 02:10 | 107.6 | ↓-1.3 | |
| 5/21 02:20 | 106.1 | ↓-1.5 | |
| 5/21 02:30 | 104.4 | ↓-1.7 | |
| 5/21 02:40 | 102.5 | ↓-1.9 | |
| 5/21 02:50 | 100.5 | ↓-2.0 | |
| 5/21 03:00 | 98.2 | ↓-2.3 | |
| 5/21 03:10 | 95.8 | ↓-2.4 | |
| 5/21 03:20 | 93.2 | ↓-2.6 | |
| 5/21 03:30 | 90.5 | ↓-2.7 | |
| 5/21 03:40 | 87.6 | ↓-2.9 | |
| 5/21 03:50 | 84.7 | ↓-2.9 | |
| 5/21 04:00 | 81.6 | ↓-3.1 | |
| 5/21 04:10 | 78.5 | ↓-3.1 | |
| 5/21 04:20 | 75.3 | ↓-3.2 | |
| 5/21 04:30 | 72.1 | ↓-3.2 | |
| 5/21 04:40 | 68.8 | ↓-3.3 | 最大潮位差 |
| 5/21 04:50 | 65.6 | ↓-3.2 | |
| 5/21 05:00 | 62.3 | ↓-3.3 | 最大潮位差 |
| 5/21 05:10 | 59.1 | ↓-3.2 | |
| 5/21 05:20 | 55.9 | ↓-3.2 | |
| 5/21 05:30 | 52.8 | ↓-3.1 | |
| 5/21 05:40 | 49.8 | ↓-3.0 | |
| 5/21 05:50 | 46.9 | ↓-2.9 | |
| 5/21 06:00 | 44.1 | ↓-2.8 | |
| 5/21 06:10 | 41.5 | ↓-2.6 | |
| 5/21 06:20 | 39.0 | ↓-2.5 | |
| 5/21 06:30 | 36.7 | ↓-2.3 | |
| 5/21 06:40 | 34.5 | ↓-2.2 | |
| 5/21 06:50 | 32.6 | ↓-1.9 | |
| 5/21 07:00 | 30.9 | ↓-1.7 | |
| 5/21 07:10 | 29.4 | ↓-1.5 | |
| 5/21 07:20 | 28.1 | ↓-1.3 | |
| 5/21 07:30 | 27.0 | ↓-1.1 | |
| 5/21 07:40 | 26.2 | ↓-0.8 | |
| 5/21 07:50 | 25.7 | ↓-0.5 | |
| 5/21 08:00 | 25.4 | ↓-0.3 | 干潮 |
| 5/21 08:10 | 25.3 | ↓-0.1 | |
| 5/21 08:20 | 25.5 | ↑0.2 | |
| 5/21 08:30 | 26.0 | ↑0.5 | |
| 5/21 08:40 | 26.7 | ↑0.7 | |
| 5/21 08:50 | 27.6 | ↑0.9 | |
| 5/21 09:00 | 28.7 | ↑1.1 | |
| 5/21 09:10 | 30.1 | ↑1.4 | |
| 5/21 09:20 | 31.7 | ↑1.6 | |
| 5/21 09:30 | 33.5 | ↑1.8 | |
| 5/21 09:40 | 35.5 | ↑2.0 | |
| 5/21 09:50 | 37.6 | ↑2.1 | |
| 5/21 10:00 | 39.9 | ↑2.3 | |
| 5/21 10:10 | 42.4 | ↑2.5 | |
| 5/21 10:20 | 44.9 | ↑2.5 | |
| 5/21 10:30 | 47.6 | ↑2.7 | |
| 5/21 10:40 | 50.4 | ↑2.8 | |
| 5/21 10:50 | 53.2 | ↑2.8 | |
| 5/21 11:00 | 56.1 | ↑2.9 | |
| 5/21 11:10 | 59.0 | ↑2.9 | |
| 5/21 11:20 | 61.9 | ↑2.9 | |
| 5/21 11:30 | 64.8 | ↑2.9 | |
| 5/21 11:40 | 67.7 | ↑2.9 | |
| 5/21 11:50 | 70.5 | ↑2.8 | |
| 5/21 12:00 | 73.3 | ↑2.8 | |
| 5/21 12:10 | 76.0 | ↑2.7 | |
| 5/21 12:20 | 78.6 | ↑2.6 | |
| 5/21 12:30 | 81.1 | ↑2.5 | |
| 5/21 12:40 | 83.5 | ↑2.4 | |
| 5/21 12:50 | 85.7 | ↑2.2 | |
| 5/21 13:00 | 87.8 | ↑2.1 | |
| 5/21 13:10 | 89.7 | ↑1.9 | |
| 5/21 13:20 | 91.4 | ↑1.7 | |
| 5/21 13:30 | 93.0 | ↑1.6 | |
| 5/21 13:40 | 94.4 | ↑1.4 | |
| 5/21 13:50 | 95.6 | ↑1.2 | |
| 5/21 14:00 | 96.5 | ↑0.9 | |
| 5/21 14:10 | 97.3 | ↑0.8 | |
| 5/21 14:20 | 97.9 | ↑0.6 | |
| 5/21 14:30 | 98.3 | ↑0.4 | |
| 5/21 14:40 | 98.5 | ↑0.2 | 満潮 |
| 5/21 14:50 | 98.5 | 0 | |
| 5/21 15:00 | 98.3 | ↓-0.2 | |
| 5/21 15:10 | 97.9 | ↓-0.4 | |
| 5/21 15:20 | 97.4 | ↓-0.5 | |
| 5/21 15:30 | 96.6 | ↓-0.8 | |
| 5/21 15:40 | 95.8 | ↓-0.8 | |
| 5/21 15:50 | 94.7 | ↓-1.1 | |
| 5/21 16:00 | 93.6 | ↓-1.1 | |
| 5/21 16:10 | 92.3 | ↓-1.3 | |
| 5/21 16:20 | 90.9 | ↓-1.4 | |
| 5/21 16:30 | 89.4 | ↓-1.5 | |
| 5/21 16:40 | 87.8 | ↓-1.6 | |
| 5/21 16:50 | 86.1 | ↓-1.7 | |
| 5/21 17:00 | 84.4 | ↓-1.7 | |
| 5/21 17:10 | 82.7 | ↓-1.7 | |
| 5/21 17:20 | 81.0 | ↓-1.7 | |
| 5/21 17:30 | 79.2 | ↓-1.8 | |
| 5/21 17:40 | 77.5 | ↓-1.7 | |
| 5/21 17:50 | 75.8 | ↓-1.7 | |
| 5/21 18:00 | 74.2 | ↓-1.6 | |
| 5/21 18:10 | 72.6 | ↓-1.6 | |
| 5/21 18:20 | 71.1 | ↓-1.5 | |
| 5/21 18:30 | 69.7 | ↓-1.4 | |
| 5/21 18:40 | 68.5 | ↓-1.2 | |
| 5/21 18:50 | 67.3 | ↓-1.2 | |
| 5/21 19:00 | 66.3 | ↓-1.0 | |
| 5/21 19:10 | 65.5 | ↓-0.8 | |
| 5/21 19:20 | 64.8 | ↓-0.7 | |
| 5/21 19:30 | 64.2 | ↓-0.6 | |
| 5/21 19:40 | 63.9 | ↓-0.3 | |
| 5/21 19:50 | 63.7 | ↓-0.2 | 干潮 |
| 5/21 20:00 | 63.7 | 0 | |
| 5/21 20:10 | 64.0 | ↑0.3 | |
| 5/21 20:20 | 64.4 | ↑0.4 | |
| 5/21 20:30 | 64.9 | ↑0.5 | |
| 5/21 20:40 | 65.7 | ↑0.8 | |
| 5/21 20:50 | 66.7 | ↑1.0 | |
| 5/21 21:00 | 67.8 | ↑1.1 | |
| 5/21 21:10 | 69.1 | ↑1.3 | |
| 5/21 21:20 | 70.5 | ↑1.4 | |
| 5/21 21:30 | 72.1 | ↑1.6 | |
| 5/21 21:40 | 73.9 | ↑1.8 | |
| 5/21 21:50 | 75.7 | ↑1.8 | |
| 5/21 22:00 | 77.7 | ↑2.0 | |
| 5/21 22:10 | 79.8 | ↑2.1 | |
| 5/21 22:20 | 82.0 | ↑2.2 | |
| 5/21 22:30 | 84.2 | ↑2.2 | |
| 5/21 22:40 | 86.4 | ↑2.2 | |
| 5/21 22:50 | 88.7 | ↑2.3 | |
| 5/21 23:00 | 91.0 | ↑2.3 | |
| 5/21 23:10 | 93.3 | ↑2.3 | |
| 5/21 23:20 | 95.5 | ↑2.2 | |
| 5/21 23:30 | 97.8 | ↑2.3 | |
| 5/21 23:40 | 99.9 | ↑2.1 | |
| 5/21 23:50 | 101.9 | ↑2.0 |