20 (日)	01:47	07:40	13:37	20:44
	89cm	60cm	87cm	44cm
小潮 出 05:46 入 18:59 出 00:57 入 10:28

大河内湾（長崎）2025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	81.1	↑1.5
4/20 00:10	82.5	↑1.4
4/20 00:20	83.7	↑1.2
4/20 00:30	84.8	↑1.1
4/20 00:40	85.8	↑1.0
4/20 00:50	86.7	↑0.9
4/20 01:00	87.4	↑0.7
4/20 01:10	88.0	↑0.6
4/20 01:20	88.4	↑0.4
4/20 01:30	88.7	↑0.3
4/20 01:40	88.8	↑0.1	満潮
4/20 01:50	88.9	↑0.1
4/20 02:00	88.7	↓-0.2
4/20 02:10	88.5	↓-0.2
4/20 02:20	88.1	↓-0.4
4/20 02:30	87.6	↓-0.5
4/20 02:40	87.0	↓-0.6
4/20 02:50	86.3	↓-0.7
4/20 03:00	85.5	↓-0.8
4/20 03:10	84.6	↓-0.9
4/20 03:20	83.6	↓-1.0
4/20 03:30	82.5	↓-1.1
4/20 03:40	81.4	↓-1.1
4/20 03:50	80.2	↓-1.2
4/20 04:00	79.0	↓-1.2
4/20 04:10	77.8	↓-1.2
4/20 04:20	76.5	↓-1.3
4/20 04:30	75.2	↓-1.3
4/20 04:40	73.9	↓-1.3
4/20 04:50	72.6	↓-1.3
4/20 05:00	71.3	↓-1.3
4/20 05:10	70.1	↓-1.2
4/20 05:20	68.8	↓-1.3
4/20 05:30	67.7	↓-1.1
4/20 05:40	66.5	↓-1.2
4/20 05:50	65.5	↓-1.0
4/20 06:00	64.5	↓-1.0
4/20 06:10	63.6	↓-0.9
4/20 06:20	62.7	↓-0.9
4/20 06:30	62.0	↓-0.7
4/20 06:40	61.3	↓-0.7
4/20 06:50	60.8	↓-0.5
4/20 07:00	60.3	↓-0.5
4/20 07:10	60.0	↓-0.3
4/20 07:20	59.7	↓-0.3
4/20 07:30	59.6	↓-0.1	干潮
4/20 07:40	59.5	↓-0.1	干潮
4/20 07:50	59.6	↑0.1
4/20 08:00	59.8	↑0.2
4/20 08:10	60.0	↑0.2
4/20 08:20	60.4	↑0.4
4/20 08:30	60.9	↑0.5
4/20 08:40	61.4	↑0.5
4/20 08:50	62.1	↑0.7
4/20 09:00	62.8	↑0.7
4/20 09:10	63.7	↑0.9
4/20 09:20	64.5	↑0.8
4/20 09:30	65.5	↑1.0
4/20 09:40	66.5	↑1.0
4/20 09:50	67.6	↑1.1
4/20 10:00	68.7	↑1.1
4/20 10:10	69.8	↑1.1
4/20 10:20	70.9	↑1.1
4/20 10:30	72.1	↑1.2
4/20 10:40	73.3	↑1.2
4/20 10:50	74.5	↑1.2
4/20 11:00	75.6	↑1.1
4/20 11:10	76.8	↑1.2
4/20 11:20	77.9	↑1.1
4/20 11:30	79.0	↑1.1
4/20 11:40	80.0	↑1.0
4/20 11:50	81.0	↑1.0
4/20 12:00	81.9	↑0.9
4/20 12:10	82.8	↑0.9
4/20 12:20	83.6	↑0.8
4/20 12:30	84.3	↑0.7
4/20 12:40	84.9	↑0.6
4/20 12:50	85.4	↑0.5
4/20 13:00	85.8	↑0.4
4/20 13:10	86.1	↑0.3
4/20 13:20	86.4	↑0.3
4/20 13:30	86.5	↑0.1	満潮
4/20 13:40	86.5	0
4/20 13:50	86.4	↓-0.1
4/20 14:00	86.2	↓-0.2
4/20 14:10	85.9	↓-0.3
4/20 14:20	85.4	↓-0.5
4/20 14:30	84.9	↓-0.5
4/20 14:40	84.2	↓-0.7
4/20 14:50	83.5	↓-0.7
4/20 15:00	82.6	↓-0.9
4/20 15:10	81.7	↓-0.9
4/20 15:20	80.7	↓-1.0
4/20 15:30	79.5	↓-1.2
4/20 15:40	78.3	↓-1.2
4/20 15:50	77.1	↓-1.2
4/20 16:00	75.7	↓-1.4
4/20 16:10	74.3	↓-1.4
4/20 16:20	72.9	↓-1.4
4/20 16:30	71.4	↓-1.5
4/20 16:40	69.8	↓-1.6	最大潮位差
4/20 16:50	68.3	↓-1.5
4/20 17:00	66.7	↓-1.6	最大潮位差
4/20 17:10	65.1	↓-1.6	最大潮位差
4/20 17:20	63.5	↓-1.6	最大潮位差
4/20 17:30	61.9	↓-1.6	最大潮位差
4/20 17:40	60.3	↓-1.6	最大潮位差
4/20 17:50	58.8	↓-1.5
4/20 18:00	57.2	↓-1.6	最大潮位差
4/20 18:10	55.8	↓-1.4
4/20 18:20	54.3	↓-1.5
4/20 18:30	53.0	↓-1.3
4/20 18:40	51.7	↓-1.3
4/20 18:50	50.4	↓-1.3
4/20 19:00	49.3	↓-1.1
4/20 19:10	48.2	↓-1.1
4/20 19:20	47.2	↓-1.0
4/20 19:30	46.3	↓-0.9
4/20 19:40	45.5	↓-0.8
4/20 19:50	44.9	↓-0.6
4/20 20:00	44.3	↓-0.6
4/20 20:10	43.8	↓-0.5
4/20 20:20	43.5	↓-0.3
4/20 20:30	43.3	↓-0.2
4/20 20:40	43.2	↓-0.1	干潮
4/20 20:50	43.2	0
4/20 21:00	43.3	↑0.1
4/20 21:10	43.6	↑0.3
4/20 21:20	44.0	↑0.4
4/20 21:30	44.5	↑0.5
4/20 21:40	45.1	↑0.6
4/20 21:50	45.8	↑0.7
4/20 22:00	46.6	↑0.8
4/20 22:10	47.5	↑0.9
4/20 22:20	48.6	↑1.1
4/20 22:30	49.7	↑1.1
4/20 22:40	50.9	↑1.2
4/20 22:50	52.1	↑1.2
4/20 23:00	53.5	↑1.4
4/20 23:10	54.9	↑1.4
4/20 23:20	56.4	↑1.5
4/20 23:30	57.9	↑1.5
4/20 23:40	59.4	↑1.5
4/20 23:50	61.0	↑1.6	最大潮位差