| 満潮 | 干潮 | 満潮 | 干潮 |
|
20
(月) |
07:15 | 11:17 | 16:35 | - |
| 25cm | 21cm | 28cm | - | |
|
||||
留萌（北海道）2030年05月20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 |
|---|---|---|---|
| 5/20 00:00 | -7.1 | ↑0.1 | |
| 5/20 00:10 | -6.9 | ↑0.2 | |
| 5/20 00:20 | -6.7 | ↑0.2 | |
| 5/20 00:30 | -6.3 | ↑0.4 | |
| 5/20 00:40 | -5.9 | ↑0.4 | |
| 5/20 00:50 | -5.5 | ↑0.4 | |
| 5/20 01:00 | -4.9 | ↑0.6 | |
| 5/20 01:10 | -4.3 | ↑0.6 | |
| 5/20 01:20 | -3.6 | ↑0.7 | |
| 5/20 01:30 | -2.9 | ↑0.7 | |
| 5/20 01:40 | -2.1 | ↑0.8 | |
| 5/20 01:50 | -1.2 | ↑0.9 | |
| 5/20 02:00 | -0.3 | ↑0.9 | |
| 5/20 02:10 | 0.7 | ↑1.0 | |
| 5/20 02:20 | 1.8 | ↑1.1 | |
| 5/20 02:30 | 2.9 | ↑1.1 | |
| 5/20 02:40 | 4.0 | ↑1.1 | |
| 5/20 02:50 | 5.1 | ↑1.1 | |
| 5/20 03:00 | 6.3 | ↑1.2 | 最大潮位差 |
| 5/20 03:10 | 7.5 | ↑1.2 | 最大潮位差 |
| 5/20 03:20 | 8.7 | ↑1.2 | 最大潮位差 |
| 5/20 03:30 | 9.9 | ↑1.2 | 最大潮位差 |
| 5/20 03:40 | 11.1 | ↑1.2 | 最大潮位差 |
| 5/20 03:50 | 12.3 | ↑1.2 | 最大潮位差 |
| 5/20 04:00 | 13.4 | ↑1.1 | |
| 5/20 04:10 | 14.6 | ↑1.2 | 最大潮位差 |
| 5/20 04:20 | 15.6 | ↑1.0 | |
| 5/20 04:30 | 16.7 | ↑1.1 | |
| 5/20 04:40 | 17.6 | ↑0.9 | |
| 5/20 04:50 | 18.6 | ↑1.0 | |
| 5/20 05:00 | 19.4 | ↑0.8 | |
| 5/20 05:10 | 20.2 | ↑0.8 | |
| 5/20 05:20 | 20.9 | ↑0.7 | |
| 5/20 05:30 | 21.6 | ↑0.7 | |
| 5/20 05:40 | 22.2 | ↑0.6 | |
| 5/20 05:50 | 22.7 | ↑0.5 | |
| 5/20 06:00 | 23.2 | ↑0.5 | |
| 5/20 06:10 | 23.6 | ↑0.4 | |
| 5/20 06:20 | 23.9 | ↑0.3 | |
| 5/20 06:30 | 24.2 | ↑0.3 | |
| 5/20 06:40 | 24.4 | ↑0.2 | |
| 5/20 06:50 | 24.5 | ↑0.1 | |
| 5/20 07:00 | 24.6 | ↑0.1 | |
| 5/20 07:10 | 24.7 | ↑0.1 | 満潮 |
| 5/20 07:20 | 24.7 | 0 | |
| 5/20 07:30 | 24.6 | ↓-0.1 | |
| 5/20 07:40 | 24.5 | ↓-0.1 | |
| 5/20 07:50 | 24.4 | ↓-0.1 | |
| 5/20 08:00 | 24.2 | ↓-0.2 | |
| 5/20 08:10 | 24.0 | ↓-0.2 | |
| 5/20 08:20 | 23.8 | ↓-0.2 | |
| 5/20 08:30 | 23.5 | ↓-0.3 | |
| 5/20 08:40 | 23.3 | ↓-0.2 | |
| 5/20 08:50 | 23.0 | ↓-0.3 | |
| 5/20 09:00 | 22.7 | ↓-0.3 | |
| 5/20 09:10 | 22.4 | ↓-0.3 | |
| 5/20 09:20 | 22.1 | ↓-0.3 | |
| 5/20 09:30 | 21.9 | ↓-0.2 | |
| 5/20 09:40 | 21.6 | ↓-0.3 | |
| 5/20 09:50 | 21.3 | ↓-0.3 | |
| 5/20 10:00 | 21.1 | ↓-0.2 | |
| 5/20 10:10 | 20.9 | ↓-0.2 | |
| 5/20 10:20 | 20.7 | ↓-0.2 | |
| 5/20 10:30 | 20.5 | ↓-0.2 | |
| 5/20 10:40 | 20.4 | ↓-0.1 | |
| 5/20 10:50 | 20.3 | ↓-0.1 | |
| 5/20 11:00 | 20.2 | ↓-0.1 | |
| 5/20 11:10 | 20.2 | 0 | 干潮 |
| 5/20 11:20 | 20.2 | 0 | |
| 5/20 11:30 | 20.2 | 0 | |
| 5/20 11:40 | 20.3 | ↑0.1 | |
| 5/20 11:50 | 20.4 | ↑0.1 | |
| 5/20 12:00 | 20.5 | ↑0.1 | |
| 5/20 12:10 | 20.6 | ↑0.1 | |
| 5/20 12:20 | 20.8 | ↑0.2 | |
| 5/20 12:30 | 20.9 | ↑0.1 | |
| 5/20 12:40 | 21.1 | ↑0.2 | |
| 5/20 12:50 | 21.4 | ↑0.3 | |
| 5/20 13:00 | 21.6 | ↑0.2 | |
| 5/20 13:10 | 21.8 | ↑0.2 | |
| 5/20 13:20 | 22.1 | ↑0.3 | |
| 5/20 13:30 | 22.4 | ↑0.3 | |
| 5/20 13:40 | 22.7 | ↑0.3 | |
| 5/20 13:50 | 22.9 | ↑0.2 | |
| 5/20 14:00 | 23.3 | ↑0.4 | |
| 5/20 14:10 | 23.6 | ↑0.3 | |
| 5/20 14:20 | 23.9 | ↑0.3 | |
| 5/20 14:30 | 24.2 | ↑0.3 | |
| 5/20 14:40 | 24.5 | ↑0.3 | |
| 5/20 14:50 | 24.9 | ↑0.4 | |
| 5/20 15:00 | 25.2 | ↑0.3 | |
| 5/20 15:10 | 25.5 | ↑0.3 | |
| 5/20 15:20 | 25.8 | ↑0.3 | |
| 5/20 15:30 | 26.1 | ↑0.3 | |
| 5/20 15:40 | 26.3 | ↑0.2 | |
| 5/20 15:50 | 26.5 | ↑0.2 | |
| 5/20 16:00 | 26.7 | ↑0.2 | |
| 5/20 16:10 | 26.8 | ↑0.1 | |
| 5/20 16:20 | 26.9 | ↑0.1 | |
| 5/20 16:30 | 27.0 | ↑0.1 | 満潮 |
| 5/20 16:40 | 27.0 | 0 | |
| 5/20 16:50 | 26.9 | ↓-0.1 | |
| 5/20 17:00 | 26.8 | ↓-0.1 | |
| 5/20 17:10 | 26.6 | ↓-0.2 | |
| 5/20 17:20 | 26.4 | ↓-0.2 | |
| 5/20 17:30 | 26.1 | ↓-0.3 | |
| 5/20 17:40 | 25.7 | ↓-0.4 | |
| 5/20 17:50 | 25.3 | ↓-0.4 | |
| 5/20 18:00 | 24.8 | ↓-0.5 | |
| 5/20 18:10 | 24.2 | ↓-0.6 | |
| 5/20 18:20 | 23.6 | ↓-0.6 | |
| 5/20 18:30 | 23.0 | ↓-0.6 | |
| 5/20 18:40 | 22.2 | ↓-0.8 | |
| 5/20 18:50 | 21.5 | ↓-0.7 | |
| 5/20 19:00 | 20.7 | ↓-0.8 | |
| 5/20 19:10 | 19.8 | ↓-0.9 | |
| 5/20 19:20 | 18.9 | ↓-0.9 | |
| 5/20 19:30 | 18.0 | ↓-0.9 | |
| 5/20 19:40 | 17.1 | ↓-0.9 | |
| 5/20 19:50 | 16.1 | ↓-1.0 | |
| 5/20 20:00 | 15.1 | ↓-1.0 | |
| 5/20 20:10 | 14.0 | ↓-1.1 | |
| 5/20 20:20 | 13.0 | ↓-1.0 | |
| 5/20 20:30 | 11.9 | ↓-1.1 | |
| 5/20 20:40 | 10.8 | ↓-1.1 | |
| 5/20 20:50 | 9.8 | ↓-1.0 | |
| 5/20 21:00 | 8.7 | ↓-1.1 | |
| 5/20 21:10 | 7.6 | ↓-1.1 | |
| 5/20 21:20 | 6.6 | ↓-1.0 | |
| 5/20 21:30 | 5.5 | ↓-1.1 | |
| 5/20 21:40 | 4.5 | ↓-1.0 | |
| 5/20 21:50 | 3.5 | ↓-1.0 | |
| 5/20 22:00 | 2.5 | ↓-1.0 | |
| 5/20 22:10 | 1.6 | ↓-0.9 | |
| 5/20 22:20 | 0.7 | ↓-0.9 | |
| 5/20 22:30 | -0.1 | ↓-0.8 | |
| 5/20 22:40 | -0.9 | ↓-0.8 | |
| 5/20 22:50 | -1.6 | ↓-0.7 | |
| 5/20 23:00 | -2.3 | ↓-0.7 | |
| 5/20 23:10 | -2.9 | ↓-0.6 | |
| 5/20 23:20 | -3.5 | ↓-0.6 | |
| 5/20 23:30 | -3.9 | ↓-0.4 | |
| 5/20 23:40 | -4.3 | ↓-0.4 | |
| 5/20 23:50 | -4.7 | ↓-0.4 |