20 (月)	07:34	09:15	16:32	-
	14cm	14cm	32cm	-
中潮 出 04:53 入 18:25 出 06:09 入 22:15

江差／桧山（北海道）2026年04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
4/20 00:00	-8.3	0
4/20 00:10	-8.2	↑0.1
4/20 00:20	-8.0	↑0.2
4/20 00:30	-7.8	↑0.2
4/20 00:40	-7.5	↑0.3
4/20 00:50	-7.1	↑0.4
4/20 01:00	-6.7	↑0.4
4/20 01:10	-6.2	↑0.5
4/20 01:20	-5.7	↑0.5
4/20 01:30	-5.1	↑0.6
4/20 01:40	-4.5	↑0.6
4/20 01:50	-3.8	↑0.7
4/20 02:00	-3.2	↑0.6
4/20 02:10	-2.4	↑0.8
4/20 02:20	-1.7	↑0.7
4/20 02:30	-0.9	↑0.8
4/20 02:40	-0.1	↑0.8
4/20 02:50	0.7	↑0.8
4/20 03:00	1.5	↑0.8
4/20 03:10	2.3	↑0.8
4/20 03:20	3.0	↑0.7
4/20 03:30	3.8	↑0.8
4/20 03:40	4.6	↑0.8
4/20 03:50	5.4	↑0.8
4/20 04:00	6.1	↑0.7
4/20 04:10	6.8	↑0.7
4/20 04:20	7.5	↑0.7
4/20 04:30	8.1	↑0.6
4/20 04:40	8.8	↑0.7
4/20 04:50	9.3	↑0.5
4/20 05:00	9.9	↑0.6
4/20 05:10	10.4	↑0.5
4/20 05:20	10.9	↑0.5
4/20 05:30	11.3	↑0.4
4/20 05:40	11.7	↑0.4
4/20 05:50	12.0	↑0.3
4/20 06:00	12.3	↑0.3
4/20 06:10	12.6	↑0.3
4/20 06:20	12.8	↑0.2
4/20 06:30	13.0	↑0.2
4/20 06:40	13.2	↑0.2
4/20 06:50	13.3	↑0.1
4/20 07:00	13.4	↑0.1
4/20 07:10	13.4	0
4/20 07:20	13.5	↑0.1
4/20 07:30	13.5	0	満潮
4/20 07:40	13.5	0
4/20 07:50	13.5	0
4/20 08:00	13.4	↓-0.1
4/20 08:10	13.4	0
4/20 08:20	13.4	0
4/20 08:30	13.3	↓-0.1
4/20 08:40	13.3	0
4/20 08:50	13.2	↓-0.1
4/20 09:00	13.2	0
4/20 09:10	13.2	0	干潮
4/20 09:20	13.2	0
4/20 09:30	13.2	0
4/20 09:40	13.2	0
4/20 09:50	13.3	↑0.1
4/20 10:00	13.4	↑0.1
4/20 10:10	13.5	↑0.1
4/20 10:20	13.7	↑0.2
4/20 10:30	13.9	↑0.2
4/20 10:40	14.1	↑0.2
4/20 10:50	14.4	↑0.3
4/20 11:00	14.7	↑0.3
4/20 11:10	15.0	↑0.3
4/20 11:20	15.4	↑0.4
4/20 11:30	15.8	↑0.4
4/20 11:40	16.3	↑0.5
4/20 11:50	16.8	↑0.5
4/20 12:00	17.3	↑0.5
4/20 12:10	17.8	↑0.5
4/20 12:20	18.4	↑0.6
4/20 12:30	19.0	↑0.6
4/20 12:40	19.6	↑0.6
4/20 12:50	20.3	↑0.7
4/20 13:00	20.9	↑0.6
4/20 13:10	21.6	↑0.7
4/20 13:20	22.3	↑0.7
4/20 13:30	23.0	↑0.7
4/20 13:40	23.7	↑0.7
4/20 13:50	24.4	↑0.7
4/20 14:00	25.1	↑0.7
4/20 14:10	25.7	↑0.6
4/20 14:20	26.4	↑0.7
4/20 14:30	27.0	↑0.6
4/20 14:40	27.6	↑0.6
4/20 14:50	28.2	↑0.6
4/20 15:00	28.7	↑0.5
4/20 15:10	29.2	↑0.5
4/20 15:20	29.7	↑0.5
4/20 15:30	30.1	↑0.4
4/20 15:40	30.4	↑0.3
4/20 15:50	30.7	↑0.3
4/20 16:00	30.9	↑0.2
4/20 16:10	31.1	↑0.2
4/20 16:20	31.2	↑0.1
4/20 16:30	31.3	↑0.1	満潮
4/20 16:40	31.2	↓-0.1
4/20 16:50	31.1	↓-0.1
4/20 17:00	31.0	↓-0.1
4/20 17:10	30.7	↓-0.3
4/20 17:20	30.4	↓-0.3
4/20 17:30	30.0	↓-0.4
4/20 17:40	29.5	↓-0.5
4/20 17:50	29.0	↓-0.5
4/20 18:00	28.4	↓-0.6
4/20 18:10	27.7	↓-0.7
4/20 18:20	26.9	↓-0.8
4/20 18:30	26.1	↓-0.8
4/20 18:40	25.2	↓-0.9
4/20 18:50	24.3	↓-0.9
4/20 19:00	23.3	↓-1.0
4/20 19:10	22.3	↓-1.0
4/20 19:20	21.2	↓-1.1
4/20 19:30	20.1	↓-1.1
4/20 19:40	18.9	↓-1.2
4/20 19:50	17.7	↓-1.2
4/20 20:00	16.5	↓-1.2
4/20 20:10	15.2	↓-1.3	最大潮位差
4/20 20:20	14.0	↓-1.2
4/20 20:30	12.7	↓-1.3	最大潮位差
4/20 20:40	11.4	↓-1.3	最大潮位差
4/20 20:50	10.1	↓-1.3	最大潮位差
4/20 21:00	8.9	↓-1.2
4/20 21:10	7.6	↓-1.3	最大潮位差
4/20 21:20	6.4	↓-1.2
4/20 21:30	5.1	↓-1.3	最大潮位差
4/20 21:40	3.9	↓-1.2
4/20 21:50	2.8	↓-1.1
4/20 22:00	1.7	↓-1.1
4/20 22:10	0.6	↓-1.1
4/20 22:20	-0.4	↓-1.0
4/20 22:30	-1.4	↓-1.0
4/20 22:40	-2.3	↓-0.9
4/20 22:50	-3.2	↓-0.9
4/20 23:00	-4.0	↓-0.8
4/20 23:10	-4.7	↓-0.7
4/20 23:20	-5.4	↓-0.7
4/20 23:30	-6.0	↓-0.6
4/20 23:40	-6.6	↓-0.6
4/20 23:50	-7.0	↓-0.4