20 (日)	00:58	02:39	10:50	19:18
	65cm	65cm	108cm	33cm
中潮 出 06:52 入 15:46 出 12:18 入 02:04

コイセボイ（北海道）2026年12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
12/20 00:00	64.2	↑0.2
12/20 00:10	64.4	↑0.2
12/20 00:20	64.6	↑0.2
12/20 00:30	64.7	↑0.1
12/20 00:40	64.8	↑0.1
12/20 00:50	64.8	0	満潮
12/20 01:00	64.8	0
12/20 01:10	64.8	0
12/20 01:20	64.7	↓-0.1
12/20 01:30	64.7	0
12/20 01:40	64.6	↓-0.1
12/20 01:50	64.6	0
12/20 02:00	64.5	↓-0.1
12/20 02:10	64.4	↓-0.1
12/20 02:20	64.4	0
12/20 02:30	64.3	↓-0.1	干潮
12/20 02:40	64.3	0
12/20 02:50	64.4	↑0.1
12/20 03:00	64.4	0
12/20 03:10	64.5	↑0.1
12/20 03:20	64.6	↑0.1
12/20 03:30	64.8	↑0.2
12/20 03:40	65.1	↑0.3
12/20 03:50	65.4	↑0.3
12/20 04:00	65.7	↑0.3
12/20 04:10	66.1	↑0.4
12/20 04:20	66.6	↑0.5
12/20 04:30	67.2	↑0.6
12/20 04:40	67.8	↑0.6
12/20 04:50	68.5	↑0.7
12/20 05:00	69.3	↑0.8
12/20 05:10	70.1	↑0.8
12/20 05:20	71.0	↑0.9
12/20 05:30	72.0	↑1.0
12/20 05:40	73.0	↑1.0
12/20 05:50	74.1	↑1.1
12/20 06:00	75.3	↑1.2
12/20 06:10	76.5	↑1.2
12/20 06:20	77.8	↑1.3
12/20 06:30	79.1	↑1.3
12/20 06:40	80.5	↑1.4
12/20 06:50	81.9	↑1.4
12/20 07:00	83.3	↑1.4
12/20 07:10	84.8	↑1.5
12/20 07:20	86.2	↑1.4
12/20 07:30	87.7	↑1.5
12/20 07:40	89.2	↑1.5
12/20 07:50	90.7	↑1.5
12/20 08:00	92.2	↑1.5
12/20 08:10	93.6	↑1.4
12/20 08:20	95.0	↑1.4
12/20 08:30	96.4	↑1.4
12/20 08:40	97.7	↑1.3
12/20 08:50	99.0	↑1.3
12/20 09:00	100.2	↑1.2
12/20 09:10	101.4	↑1.2
12/20 09:20	102.4	↑1.0
12/20 09:30	103.4	↑1.0
12/20 09:40	104.3	↑0.9
12/20 09:50	105.1	↑0.8
12/20 10:00	105.7	↑0.6
12/20 10:10	106.3	↑0.6
12/20 10:20	106.7	↑0.4
12/20 10:30	107.0	↑0.3
12/20 10:40	107.2	↑0.2	満潮
12/20 10:50	107.3	↑0.1	満潮
12/20 11:00	107.2	↓-0.1
12/20 11:10	107.0	↓-0.2
12/20 11:20	106.7	↓-0.3
12/20 11:30	106.2	↓-0.5
12/20 11:40	105.6	↓-0.6
12/20 11:50	104.8	↓-0.8
12/20 12:00	103.9	↓-0.9
12/20 12:10	102.9	↓-1.0
12/20 12:20	101.7	↓-1.2
12/20 12:30	100.4	↓-1.3
12/20 12:40	99.0	↓-1.4
12/20 12:50	97.5	↓-1.5
12/20 13:00	95.8	↓-1.7
12/20 13:10	94.1	↓-1.7
12/20 13:20	92.2	↓-1.9
12/20 13:30	90.3	↓-1.9
12/20 13:40	88.2	↓-2.1
12/20 13:50	86.1	↓-2.1
12/20 14:00	84.0	↓-2.1
12/20 14:10	81.7	↓-2.3
12/20 14:20	79.5	↓-2.2
12/20 14:30	77.1	↓-2.4	最大潮位差
12/20 14:40	74.8	↓-2.3
12/20 14:50	72.4	↓-2.4	最大潮位差
12/20 15:00	70.0	↓-2.4	最大潮位差
12/20 15:10	67.7	↓-2.3
12/20 15:20	65.3	↓-2.4	最大潮位差
12/20 15:30	63.0	↓-2.3
12/20 15:40	60.7	↓-2.3
12/20 15:50	58.4	↓-2.3
12/20 16:00	56.2	↓-2.2
12/20 16:10	54.0	↓-2.2
12/20 16:20	51.9	↓-2.1
12/20 16:30	49.9	↓-2.0
12/20 16:40	48.0	↓-1.9
12/20 16:50	46.1	↓-1.9
12/20 17:00	44.4	↓-1.7
12/20 17:10	42.7	↓-1.7
12/20 17:20	41.2	↓-1.5
12/20 17:30	39.8	↓-1.4
12/20 17:40	38.5	↓-1.3
12/20 17:50	37.3	↓-1.2
12/20 18:00	36.3	↓-1.0
12/20 18:10	35.4	↓-0.9
12/20 18:20	34.6	↓-0.8
12/20 18:30	33.9	↓-0.7
12/20 18:40	33.4	↓-0.5
12/20 18:50	33.0	↓-0.4
12/20 19:00	32.7	↓-0.3
12/20 19:10	32.6	↓-0.1	干潮
12/20 19:20	32.5	↓-0.1
12/20 19:30	32.6	↑0.1
12/20 19:40	32.8	↑0.2
12/20 19:50	33.1	↑0.3
12/20 20:00	33.6	↑0.5
12/20 20:10	34.1	↑0.5
12/20 20:20	34.7	↑0.6
12/20 20:30	35.4	↑0.7
12/20 20:40	36.2	↑0.8
12/20 20:50	37.0	↑0.8
12/20 21:00	38.0	↑1.0
12/20 21:10	38.9	↑0.9
12/20 21:20	40.0	↑1.1
12/20 21:30	41.0	↑1.0
12/20 21:40	42.1	↑1.1
12/20 21:50	43.3	↑1.2
12/20 22:00	44.4	↑1.1
12/20 22:10	45.6	↑1.2
12/20 22:20	46.7	↑1.1
12/20 22:30	47.9	↑1.2
12/20 22:40	49.0	↑1.1
12/20 22:50	50.2	↑1.2
12/20 23:00	51.3	↑1.1
12/20 23:10	52.4	↑1.1
12/20 23:20	53.4	↑1.0
12/20 23:30	54.5	↑1.1
12/20 23:40	55.4	↑0.9
12/20 23:50	56.4	↑1.0