12 (月)	05:10	13:33	-	-
	112cm	16cm	-	-
中潮 出 04:45 入 18:02 出 07:44 入 - 潮干狩り ○ 11:43～15:46

コイセボイ（北海道）2027年04月12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
4/12 00:00	58.1	↑1.6
4/12 00:10	59.9	↑1.8
4/12 00:20	61.8	↑1.9
4/12 00:30	63.8	↑2.0
4/12 00:40	65.8	↑2.0
4/12 00:50	67.9	↑2.1
4/12 01:00	70.1	↑2.2
4/12 01:10	72.3	↑2.2
4/12 01:20	74.6	↑2.3
4/12 01:30	76.9	↑2.3
4/12 01:40	79.3	↑2.4
4/12 01:50	81.6	↑2.3
4/12 02:00	83.9	↑2.3
4/12 02:10	86.3	↑2.4
4/12 02:20	88.5	↑2.2
4/12 02:30	90.8	↑2.3
4/12 02:40	93.0	↑2.2
4/12 02:50	95.1	↑2.1
4/12 03:00	97.2	↑2.1
4/12 03:10	99.1	↑1.9
4/12 03:20	101.0	↑1.9
4/12 03:30	102.7	↑1.7
4/12 03:40	104.3	↑1.6
4/12 03:50	105.7	↑1.4
4/12 04:00	107.1	↑1.4
4/12 04:10	108.2	↑1.1
4/12 04:20	109.2	↑1.0
4/12 04:30	110.0	↑0.8
4/12 04:40	110.7	↑0.7
4/12 04:50	111.1	↑0.4
4/12 05:00	111.4	↑0.3	満潮
4/12 05:10	111.4	0	満潮
4/12 05:20	111.3	↓-0.1
4/12 05:30	111.0	↓-0.3
4/12 05:40	110.5	↓-0.5
4/12 05:50	109.8	↓-0.7
4/12 06:00	108.8	↓-1.0
4/12 06:10	107.7	↓-1.1
4/12 06:20	106.4	↓-1.3
4/12 06:30	104.9	↓-1.5
4/12 06:40	103.3	↓-1.6
4/12 06:50	101.5	↓-1.8
4/12 07:00	99.5	↓-2.0
4/12 07:10	97.3	↓-2.2
4/12 07:20	95.0	↓-2.3
4/12 07:30	92.6	↓-2.4
4/12 07:40	90.0	↓-2.6
4/12 07:50	87.4	↓-2.6
4/12 08:00	84.6	↓-2.8
4/12 08:10	81.8	↓-2.8
4/12 08:20	78.8	↓-3.0
4/12 08:30	75.8	↓-3.0
4/12 08:40	72.8	↓-3.0
4/12 08:50	69.8	↓-3.0
4/12 09:00	66.7	↓-3.1	最大潮位差
4/12 09:10	63.6	↓-3.1	最大潮位差
4/12 09:20	60.5	↓-3.1	最大潮位差
4/12 09:30	57.4	↓-3.1	最大潮位差
4/12 09:40	54.4	↓-3.0
4/12 09:50	51.4	↓-3.0
4/12 10:00	48.5	↓-2.9
4/12 10:10	45.7	↓-2.8
4/12 10:20	42.9	↓-2.8
4/12 10:30	40.2	↓-2.7
4/12 10:40	37.7	↓-2.5
4/12 10:50	35.2	↓-2.5
4/12 11:00	32.9	↓-2.3
4/12 11:10	30.7	↓-2.2
4/12 11:20	28.6	↓-2.1
4/12 11:30	26.7	↓-1.9
4/12 11:40	24.9	↓-1.8
4/12 11:50	23.3	↓-1.6
4/12 12:00	21.8	↓-1.5
4/12 12:10	20.5	↓-1.3
4/12 12:20	19.4	↓-1.1
4/12 12:30	18.4	↓-1.0
4/12 12:40	17.6	↓-0.8
4/12 12:50	16.9	↓-0.7
4/12 13:00	16.3	↓-0.6
4/12 13:10	16.0	↓-0.3
4/12 13:20	15.7	↓-0.3
4/12 13:30	15.6	↓-0.1	干潮
4/12 13:40	15.7	↑0.1
4/12 13:50	15.9	↑0.2
4/12 14:00	16.1	↑0.2
4/12 14:10	16.5	↑0.4
4/12 14:20	17.1	↑0.6
4/12 14:30	17.7	↑0.6
4/12 14:40	18.3	↑0.6
4/12 14:50	19.1	↑0.8
4/12 15:00	20.0	↑0.9
4/12 15:10	20.9	↑0.9
4/12 15:20	21.8	↑0.9
4/12 15:30	22.8	↑1.0
4/12 15:40	23.8	↑1.0
4/12 15:50	24.9	↑1.1
4/12 16:00	25.9	↑1.0
4/12 16:10	27.0	↑1.1
4/12 16:20	28.1	↑1.1
4/12 16:30	29.1	↑1.0
4/12 16:40	30.2	↑1.1
4/12 16:50	31.2	↑1.0
4/12 17:00	32.2	↑1.0
4/12 17:10	33.1	↑0.9
4/12 17:20	34.0	↑0.9
4/12 17:30	34.8	↑0.8
4/12 17:40	35.6	↑0.8
4/12 17:50	36.4	↑0.8
4/12 18:00	37.1	↑0.7
4/12 18:10	37.7	↑0.6
4/12 18:20	38.3	↑0.6
4/12 18:30	38.8	↑0.5
4/12 18:40	39.3	↑0.5
4/12 18:50	39.7	↑0.4
4/12 19:00	40.1	↑0.4
4/12 19:10	40.4	↑0.3
4/12 19:20	40.6	↑0.2
4/12 19:30	40.9	↑0.3
4/12 19:40	41.1	↑0.2
4/12 19:50	41.2	↑0.1
4/12 20:00	41.3	↑0.1
4/12 20:10	41.4	↑0.1
4/12 20:20	41.5	↑0.1
4/12 20:30	41.6	↑0.1
4/12 20:40	41.7	↑0.1
4/12 20:50	41.8	↑0.1
4/12 21:00	41.9	↑0.1
4/12 21:10	42.0	↑0.1
4/12 21:20	42.1	↑0.1
4/12 21:30	42.3	↑0.2
4/12 21:40	42.6	↑0.3
4/12 21:50	42.8	↑0.2
4/12 22:00	43.2	↑0.4
4/12 22:10	43.6	↑0.4
4/12 22:20	44.0	↑0.4
4/12 22:30	44.5	↑0.5
4/12 22:40	45.1	↑0.6
4/12 22:50	45.8	↑0.7
4/12 23:00	46.6	↑0.8
4/12 23:10	47.4	↑0.8
4/12 23:20	48.4	↑1.0
4/12 23:30	49.4	↑1.0
4/12 23:40	50.5	↑1.1
4/12 23:50	51.8	↑1.3