20 (日)	06:06	00:46	23:34	14:39
	104cm	88cm	93cm	13cm
小潮 出 04:59 入 18:17 出 00:18 入 09:36 潮干狩り ◎ 12:17～17:13

那珂湊（茨城）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	87.8	↓-0.3
4/20 00:10	87.6	↓-0.2
4/20 00:20	87.4	↓-0.2
4/20 00:30	87.3	↓-0.1
4/20 00:40	87.2	↓-0.1	干潮
4/20 00:50	87.2	0
4/20 01:00	87.3	↑0.1
4/20 01:10	87.4	↑0.1
4/20 01:20	87.6	↑0.2
4/20 01:30	87.9	↑0.3
4/20 01:40	88.3	↑0.4
4/20 01:50	88.7	↑0.4
4/20 02:00	89.2	↑0.5
4/20 02:10	89.7	↑0.5
4/20 02:20	90.3	↑0.6
4/20 02:30	91.0	↑0.7
4/20 02:40	91.7	↑0.7
4/20 02:50	92.4	↑0.7
4/20 03:00	93.2	↑0.8
4/20 03:10	94.0	↑0.8
4/20 03:20	94.8	↑0.8
4/20 03:30	95.6	↑0.8
4/20 03:40	96.4	↑0.8
4/20 03:50	97.2	↑0.8
4/20 04:00	98.0	↑0.8
4/20 04:10	98.7	↑0.7
4/20 04:20	99.5	↑0.8
4/20 04:30	100.2	↑0.7
4/20 04:40	100.8	↑0.6
4/20 04:50	101.4	↑0.6
4/20 05:00	102.0	↑0.6
4/20 05:10	102.5	↑0.5
4/20 05:20	102.9	↑0.4
4/20 05:30	103.3	↑0.4
4/20 05:40	103.5	↑0.2
4/20 05:50	103.7	↑0.2
4/20 06:00	103.8	↑0.1	満潮
4/20 06:10	103.8	0
4/20 06:20	103.7	↓-0.1
4/20 06:30	103.5	↓-0.2
4/20 06:40	103.2	↓-0.3
4/20 06:50	102.7	↓-0.5
4/20 07:00	102.2	↓-0.5
4/20 07:10	101.5	↓-0.7
4/20 07:20	100.7	↓-0.8
4/20 07:30	99.8	↓-0.9
4/20 07:40	98.7	↓-1.1
4/20 07:50	97.5	↓-1.2
4/20 08:00	96.1	↓-1.4
4/20 08:10	94.6	↓-1.5
4/20 08:20	93.0	↓-1.6
4/20 08:30	91.2	↓-1.8
4/20 08:40	89.3	↓-1.9
4/20 08:50	87.3	↓-2.0
4/20 09:00	85.1	↓-2.2
4/20 09:10	82.8	↓-2.3
4/20 09:20	80.4	↓-2.4
4/20 09:30	77.9	↓-2.5
4/20 09:40	75.3	↓-2.6
4/20 09:50	72.6	↓-2.7
4/20 10:00	69.8	↓-2.8
4/20 10:10	66.9	↓-2.9
4/20 10:20	64.0	↓-2.9
4/20 10:30	61.0	↓-3.0	最大潮位差
4/20 10:40	58.0	↓-3.0	最大潮位差
4/20 10:50	55.0	↓-3.0	最大潮位差
4/20 11:00	52.0	↓-3.0	最大潮位差
4/20 11:10	49.0	↓-3.0	最大潮位差
4/20 11:20	46.1	↓-2.9
4/20 11:30	43.2	↓-2.9
4/20 11:40	40.3	↓-2.9
4/20 11:50	37.5	↓-2.8
4/20 12:00	34.9	↓-2.6
4/20 12:10	32.3	↓-2.6
4/20 12:20	29.8	↓-2.5
4/20 12:30	27.5	↓-2.3
4/20 12:40	25.3	↓-2.2
4/20 12:50	23.3	↓-2.0
4/20 13:00	21.4	↓-1.9
4/20 13:10	19.7	↓-1.7
4/20 13:20	18.2	↓-1.5
4/20 13:30	16.8	↓-1.4
4/20 13:40	15.7	↓-1.1
4/20 13:50	14.7	↓-1.0
4/20 14:00	13.9	↓-0.8
4/20 14:10	13.3	↓-0.6
4/20 14:20	12.8	↓-0.5
4/20 14:30	12.6	↓-0.2	干潮
4/20 14:40	12.5	↓-0.1
4/20 14:50	12.7	↑0.2
4/20 15:00	13.0	↑0.3
4/20 15:10	13.4	↑0.4
4/20 15:20	14.0	↑0.6
4/20 15:30	14.8	↑0.8
4/20 15:40	15.8	↑1.0
4/20 15:50	16.9	↑1.1
4/20 16:00	18.1	↑1.2
4/20 16:10	19.5	↑1.4
4/20 16:20	21.0	↑1.5
4/20 16:30	22.6	↑1.6
4/20 16:40	24.3	↑1.7
4/20 16:50	26.2	↑1.9
4/20 17:00	28.1	↑1.9
4/20 17:10	30.1	↑2.0
4/20 17:20	32.2	↑2.1
4/20 17:30	34.4	↑2.2
4/20 17:40	36.7	↑2.3
4/20 17:50	39.0	↑2.3
4/20 18:00	41.3	↑2.3
4/20 18:10	43.7	↑2.4
4/20 18:20	46.1	↑2.4
4/20 18:30	48.6	↑2.5
4/20 18:40	51.1	↑2.5
4/20 18:50	53.5	↑2.4
4/20 19:00	56.0	↑2.5
4/20 19:10	58.4	↑2.4
4/20 19:20	60.8	↑2.4
4/20 19:30	63.2	↑2.4
4/20 19:40	65.5	↑2.3
4/20 19:50	67.8	↑2.3
4/20 20:00	70.0	↑2.2
4/20 20:10	72.2	↑2.2
4/20 20:20	74.2	↑2.0
4/20 20:30	76.2	↑2.0
4/20 20:40	78.0	↑1.8
4/20 20:50	79.8	↑1.8
4/20 21:00	81.4	↑1.6
4/20 21:10	83.0	↑1.6
4/20 21:20	84.4	↑1.4
4/20 21:30	85.7	↑1.3
4/20 21:40	86.9	↑1.2
4/20 21:50	87.9	↑1.0
4/20 22:00	88.8	↑0.9
4/20 22:10	89.6	↑0.8
4/20 22:20	90.3	↑0.7
4/20 22:30	90.9	↑0.6
4/20 22:40	91.4	↑0.5
4/20 22:50	91.8	↑0.4
4/20 23:00	92.0	↑0.2
4/20 23:10	92.2	↑0.2
4/20 23:20	92.4	↑0.2
4/20 23:30	92.4	0	満潮
4/20 23:40	92.4	0
4/20 23:50	92.3	↓-0.1