21 (日)	14:45	23:06	-	-
	135cm	13cm	-	-
大潮 出 06:53 入 15:47 出 08:07 入 16:21

コイセボイ（北海道）2025年12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
12/21 00:00	18.3	↑1.4
12/21 00:10	19.9	↑1.6
12/21 00:20	21.5	↑1.6
12/21 00:30	23.2	↑1.7
12/21 00:40	25.0	↑1.8
12/21 00:50	26.8	↑1.8
12/21 01:00	28.6	↑1.8
12/21 01:10	30.5	↑1.9
12/21 01:20	32.4	↑1.9
12/21 01:30	34.3	↑1.9
12/21 01:40	36.2	↑1.9
12/21 01:50	38.1	↑1.9
12/21 02:00	40.0	↑1.9
12/21 02:10	41.8	↑1.8
12/21 02:20	43.5	↑1.7
12/21 02:30	45.2	↑1.7
12/21 02:40	46.8	↑1.6
12/21 02:50	48.4	↑1.6
12/21 03:00	49.9	↑1.5
12/21 03:10	51.3	↑1.4
12/21 03:20	52.6	↑1.3
12/21 03:30	53.8	↑1.2
12/21 03:40	54.9	↑1.1
12/21 03:50	55.9	↑1.0
12/21 04:00	56.9	↑1.0
12/21 04:10	57.7	↑0.8
12/21 04:20	58.5	↑0.8
12/21 04:30	59.2	↑0.7
12/21 04:40	59.8	↑0.6
12/21 04:50	60.3	↑0.5
12/21 05:00	60.7	↑0.4
12/21 05:10	61.1	↑0.4
12/21 05:20	61.5	↑0.4
12/21 05:30	61.7	↑0.2
12/21 05:40	62.0	↑0.3
12/21 05:50	62.2	↑0.2
12/21 06:00	62.4	↑0.2
12/21 06:10	62.6	↑0.2
12/21 06:20	62.8	↑0.2
12/21 06:30	62.9	↑0.1
12/21 06:40	63.2	↑0.3
12/21 06:50	63.4	↑0.2
12/21 07:00	63.7	↑0.3
12/21 07:10	64.0	↑0.3
12/21 07:20	64.3	↑0.3
12/21 07:30	64.8	↑0.5
12/21 07:40	65.3	↑0.5
12/21 07:50	65.9	↑0.6
12/21 08:00	66.5	↑0.6
12/21 08:10	67.3	↑0.8
12/21 08:20	68.2	↑0.9
12/21 08:30	69.1	↑0.9
12/21 08:40	70.2	↑1.1
12/21 08:50	71.4	↑1.2
12/21 09:00	72.7	↑1.3
12/21 09:10	74.1	↑1.4
12/21 09:20	75.6	↑1.5
12/21 09:30	77.2	↑1.6
12/21 09:40	78.9	↑1.7
12/21 09:50	80.8	↑1.9
12/21 10:00	82.7	↑1.9
12/21 10:10	84.7	↑2.0
12/21 10:20	86.8	↑2.1
12/21 10:30	89.0	↑2.2
12/21 10:40	91.3	↑2.3
12/21 10:50	93.6	↑2.3
12/21 11:00	96.0	↑2.4
12/21 11:10	98.4	↑2.4
12/21 11:20	100.8	↑2.4
12/21 11:30	103.2	↑2.4
12/21 11:40	105.7	↑2.5
12/21 11:50	108.1	↑2.4
12/21 12:00	110.5	↑2.4
12/21 12:10	112.9	↑2.4
12/21 12:20	115.2	↑2.3
12/21 12:30	117.5	↑2.3
12/21 12:40	119.6	↑2.1
12/21 12:50	121.7	↑2.1
12/21 13:00	123.6	↑1.9
12/21 13:10	125.5	↑1.9
12/21 13:20	127.2	↑1.7
12/21 13:30	128.7	↑1.5
12/21 13:40	130.1	↑1.4
12/21 13:50	131.3	↑1.2
12/21 14:00	132.4	↑1.1
12/21 14:10	133.2	↑0.8
12/21 14:20	133.8	↑0.6
12/21 14:30	134.2	↑0.4
12/21 14:40	134.5	↑0.3	満潮
12/21 14:50	134.4	↓-0.1
12/21 15:00	134.2	↓-0.2
12/21 15:10	133.7	↓-0.5
12/21 15:20	133.0	↓-0.7
12/21 15:30	132.1	↓-0.9
12/21 15:40	130.9	↓-1.2
12/21 15:50	129.5	↓-1.4
12/21 16:00	127.9	↓-1.6
12/21 16:10	126.0	↓-1.9
12/21 16:20	124.0	↓-2.0
12/21 16:30	121.7	↓-2.3
12/21 16:40	119.2	↓-2.5
12/21 16:50	116.5	↓-2.7
12/21 17:00	113.7	↓-2.8
12/21 17:10	110.7	↓-3.0
12/21 17:20	107.5	↓-3.2
12/21 17:30	104.1	↓-3.4
12/21 17:40	100.7	↓-3.4
12/21 17:50	97.1	↓-3.6
12/21 18:00	93.4	↓-3.7
12/21 18:10	89.7	↓-3.7
12/21 18:20	85.8	↓-3.9
12/21 18:30	81.9	↓-3.9
12/21 18:40	78.0	↓-3.9
12/21 18:50	74.1	↓-3.9
12/21 19:00	70.1	↓-4.0	最大潮位差
12/21 19:10	66.2	↓-3.9
12/21 19:20	62.3	↓-3.9
12/21 19:30	58.5	↓-3.8
12/21 19:40	54.7	↓-3.8
12/21 19:50	51.1	↓-3.6
12/21 20:00	47.5	↓-3.6
12/21 20:10	44.0	↓-3.5
12/21 20:20	40.7	↓-3.3
12/21 20:30	37.5	↓-3.2
12/21 20:40	34.4	↓-3.1
12/21 20:50	31.6	↓-2.8
12/21 21:00	28.9	↓-2.7
12/21 21:10	26.3	↓-2.6
12/21 21:20	24.0	↓-2.3
12/21 21:30	21.9	↓-2.1
12/21 21:40	20.0	↓-1.9
12/21 21:50	18.3	↓-1.7
12/21 22:00	16.8	↓-1.5
12/21 22:10	15.5	↓-1.3
12/21 22:20	14.5	↓-1.0
12/21 22:30	13.7	↓-0.8
12/21 22:40	13.0	↓-0.7
12/21 22:50	12.6	↓-0.4
12/21 23:00	12.4	↓-0.2	干潮
12/21 23:10	12.4	0
12/21 23:20	12.6	↑0.2
12/21 23:30	13.0	↑0.4
12/21 23:40	13.6	↑0.6
12/21 23:50	14.3	↑0.7