20 (月)	04:37	11:44	19:07	23:46
	113cm	-9cm	109cm	77cm
中潮 出 04:59 入 18:17 出 06:26 入 21:53 潮干狩り ◎ 09:02～14:32

那珂湊（茨城）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	68.9	↑0.9
4/20 00:10	69.9	↑1.0
4/20 00:20	71.1	↑1.2
4/20 00:30	72.5	↑1.4
4/20 00:40	74.1	↑1.6
4/20 00:50	75.7	↑1.6
4/20 01:00	77.6	↑1.9
4/20 01:10	79.5	↑1.9
4/20 01:20	81.5	↑2.0
4/20 01:30	83.6	↑2.1
4/20 01:40	85.7	↑2.1
4/20 01:50	87.9	↑2.2
4/20 02:00	90.1	↑2.2
4/20 02:10	92.3	↑2.2
4/20 02:20	94.4	↑2.1
4/20 02:30	96.6	↑2.2
4/20 02:40	98.6	↑2.0
4/20 02:50	100.6	↑2.0
4/20 03:00	102.5	↑1.9
4/20 03:10	104.3	↑1.8
4/20 03:20	105.9	↑1.6
4/20 03:30	107.4	↑1.5
4/20 03:40	108.7	↑1.3
4/20 03:50	109.9	↑1.2
4/20 04:00	110.8	↑0.9
4/20 04:10	111.5	↑0.7
4/20 04:20	112.0	↑0.5
4/20 04:30	112.3	↑0.3	満潮
4/20 04:40	112.3	0
4/20 04:50	112.1	↓-0.2
4/20 05:00	111.6	↓-0.5
4/20 05:10	110.8	↓-0.8
4/20 05:20	109.7	↓-1.1
4/20 05:30	108.4	↓-1.3
4/20 05:40	106.8	↓-1.6
4/20 05:50	104.9	↓-1.9
4/20 06:00	102.7	↓-2.2
4/20 06:10	100.2	↓-2.5
4/20 06:20	97.5	↓-2.7
4/20 06:30	94.6	↓-2.9
4/20 06:40	91.4	↓-3.2
4/20 06:50	87.9	↓-3.5
4/20 07:00	84.3	↓-3.6
4/20 07:10	80.4	↓-3.9
4/20 07:20	76.4	↓-4.0
4/20 07:30	72.2	↓-4.2
4/20 07:40	67.9	↓-4.3
4/20 07:50	63.4	↓-4.5
4/20 08:00	58.9	↓-4.5
4/20 08:10	54.3	↓-4.6	最大潮位差
4/20 08:20	49.7	↓-4.6	最大潮位差
4/20 08:30	45.1	↓-4.6	最大潮位差
4/20 08:40	40.5	↓-4.6	最大潮位差
4/20 08:50	36.0	↓-4.5
4/20 09:00	31.6	↓-4.4
4/20 09:10	27.2	↓-4.4
4/20 09:20	23.0	↓-4.2
4/20 09:30	19.0	↓-4.0
4/20 09:40	15.1	↓-3.9
4/20 09:50	11.5	↓-3.6
4/20 10:00	8.1	↓-3.4
4/20 10:10	4.9	↓-3.2
4/20 10:20	2.1	↓-2.8
4/20 10:30	-0.5	↓-2.6
4/20 10:40	-2.8	↓-2.3
4/20 10:50	-4.7	↓-1.9
4/20 11:00	-6.4	↓-1.7
4/20 11:10	-7.7	↓-1.3
4/20 11:20	-8.6	↓-0.9
4/20 11:30	-9.2	↓-0.6
4/20 11:40	-9.5	↓-0.3	干潮
4/20 11:50	-9.4	↑0.1
4/20 12:00	-9.0	↑0.4
4/20 12:10	-8.3	↑0.7
4/20 12:20	-7.2	↑1.1
4/20 12:30	-5.8	↑1.4
4/20 12:40	-4.1	↑1.7
4/20 12:50	-2.1	↑2.0
4/20 13:00	0.1	↑2.2
4/20 13:10	2.7	↑2.6
4/20 13:20	5.4	↑2.7
4/20 13:30	8.4	↑3.0
4/20 13:40	11.6	↑3.2
4/20 13:50	15.0	↑3.4
4/20 14:00	18.6	↑3.6
4/20 14:10	22.3	↑3.7
4/20 14:20	26.2	↑3.9
4/20 14:30	30.1	↑3.9
4/20 14:40	34.2	↑4.1
4/20 14:50	38.3	↑4.1
4/20 15:00	42.5	↑4.2
4/20 15:10	46.7	↑4.2
4/20 15:20	50.8	↑4.1
4/20 15:30	55.0	↑4.2
4/20 15:40	59.2	↑4.2
4/20 15:50	63.2	↑4.0
4/20 16:00	67.2	↑4.0
4/20 16:10	71.1	↑3.9
4/20 16:20	74.9	↑3.8
4/20 16:30	78.6	↑3.7
4/20 16:40	82.1	↑3.5
4/20 16:50	85.4	↑3.3
4/20 17:00	88.5	↑3.1
4/20 17:10	91.5	↑3.0
4/20 17:20	94.2	↑2.7
4/20 17:30	96.7	↑2.5
4/20 17:40	99.0	↑2.3
4/20 17:50	101.0	↑2.0
4/20 18:00	102.8	↑1.8
4/20 18:10	104.4	↑1.6
4/20 18:20	105.6	↑1.2
4/20 18:30	106.7	↑1.1
4/20 18:40	107.4	↑0.7
4/20 18:50	107.9	↑0.5
4/20 19:00	108.2	↑0.3	満潮
4/20 19:10	108.2	0
4/20 19:20	108.0	↓-0.2
4/20 19:30	107.5	↓-0.5
4/20 19:40	106.9	↓-0.6
4/20 19:50	106.0	↓-0.9
4/20 20:00	105.0	↓-1.0
4/20 20:10	103.8	↓-1.2
4/20 20:20	102.5	↓-1.3
4/20 20:30	101.0	↓-1.5
4/20 20:40	99.4	↓-1.6
4/20 20:50	97.8	↓-1.6
4/20 21:00	96.1	↓-1.7
4/20 21:10	94.3	↓-1.8
4/20 21:20	92.5	↓-1.8
4/20 21:30	90.8	↓-1.7
4/20 21:40	89.1	↓-1.7
4/20 21:50	87.4	↓-1.7
4/20 22:00	85.8	↓-1.6
4/20 22:10	84.2	↓-1.6
4/20 22:20	82.8	↓-1.4
4/20 22:30	81.5	↓-1.3
4/20 22:40	80.3	↓-1.2
4/20 22:50	79.3	↓-1.0
4/20 23:00	78.5	↓-0.8
4/20 23:10	77.8	↓-0.7
4/20 23:20	77.2	↓-0.6
4/20 23:30	76.9	↓-0.3
4/20 23:40	76.7	↓-0.2	干潮
4/20 23:50	76.7	0