20 (月)	04:38	11:51	18:54	23:35
	135cm	-12cm	115cm	79cm
中潮 出 04:59 入 18:17 出 06:26 入 21:54 潮干狩り ◎ 09:10～14:35

日立（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	73.3	↑1.2
4/20 00:10	74.8	↑1.5
4/20 00:20	76.5	↑1.7
4/20 00:30	78.4	↑1.9
4/20 00:40	80.5	↑2.1
4/20 00:50	82.9	↑2.4
4/20 01:00	85.4	↑2.5
4/20 01:10	88.0	↑2.6
4/20 01:20	90.8	↑2.8
4/20 01:30	93.7	↑2.9
4/20 01:40	96.7	↑3.0
4/20 01:50	99.8	↑3.1
4/20 02:00	102.9	↑3.1
4/20 02:10	106.0	↑3.1
4/20 02:20	109.1	↑3.1
4/20 02:30	112.1	↑3.0
4/20 02:40	115.1	↑3.0
4/20 02:50	117.9	↑2.8
4/20 03:00	120.6	↑2.7
4/20 03:10	123.1	↑2.5
4/20 03:20	125.4	↑2.3
4/20 03:30	127.5	↑2.1
4/20 03:40	129.3	↑1.8
4/20 03:50	130.9	↑1.6
4/20 04:00	132.2	↑1.3
4/20 04:10	133.2	↑1.0
4/20 04:20	133.9	↑0.7
4/20 04:30	134.3	↑0.4	満潮
4/20 04:40	134.3	0
4/20 04:50	134.1	↓-0.2
4/20 05:00	133.5	↓-0.6
4/20 05:10	132.5	↓-1.0
4/20 05:20	131.2	↓-1.3
4/20 05:30	129.6	↓-1.6
4/20 05:40	127.7	↓-1.9
4/20 05:50	125.4	↓-2.3
4/20 06:00	122.7	↓-2.7
4/20 06:10	119.8	↓-2.9
4/20 06:20	116.6	↓-3.2
4/20 06:30	113.0	↓-3.6
4/20 06:40	109.2	↓-3.8
4/20 06:50	105.1	↓-4.1
4/20 07:00	100.7	↓-4.4
4/20 07:10	96.1	↓-4.6
4/20 07:20	91.3	↓-4.8
4/20 07:30	86.3	↓-5.0
4/20 07:40	81.1	↓-5.2
4/20 07:50	75.8	↓-5.3
4/20 08:00	70.4	↓-5.4
4/20 08:10	65.0	↓-5.4
4/20 08:20	59.5	↓-5.5	最大潮位差
4/20 08:30	54.0	↓-5.5	最大潮位差
4/20 08:40	48.5	↓-5.5	最大潮位差
4/20 08:50	43.1	↓-5.4
4/20 09:00	37.8	↓-5.3
4/20 09:10	32.6	↓-5.2
4/20 09:20	27.6	↓-5.0
4/20 09:30	22.8	↓-4.8
4/20 09:40	18.2	↓-4.6
4/20 09:50	13.8	↓-4.4
4/20 10:00	9.8	↓-4.0
4/20 10:10	6.0	↓-3.8
4/20 10:20	2.5	↓-3.5
4/20 10:30	-0.7	↓-3.2
4/20 10:40	-3.5	↓-2.8
4/20 10:50	-6.0	↓-2.5
4/20 11:00	-8.1	↓-2.1
4/20 11:10	-9.8	↓-1.7
4/20 11:20	-11.2	↓-1.4
4/20 11:30	-12.1	↓-0.9
4/20 11:40	-12.7	↓-0.6
4/20 11:50	-12.9	↓-0.2	干潮
4/20 12:00	-12.7	↑0.2
4/20 12:10	-12.2	↑0.5
4/20 12:20	-11.2	↑1.0
4/20 12:30	-9.9	↑1.3
4/20 12:40	-8.1	↑1.8
4/20 12:50	-6.1	↑2.0
4/20 13:00	-3.6	↑2.5
4/20 13:10	-0.8	↑2.8
4/20 13:20	2.3	↑3.1
4/20 13:30	5.7	↑3.4
4/20 13:40	9.4	↑3.7
4/20 13:50	13.3	↑3.9
4/20 14:00	17.5	↑4.2
4/20 14:10	21.9	↑4.4
4/20 14:20	26.4	↑4.5
4/20 14:30	31.1	↑4.7
4/20 14:40	35.9	↑4.8
4/20 14:50	40.7	↑4.8
4/20 15:00	45.6	↑4.9
4/20 15:10	50.6	↑5.0
4/20 15:20	55.4	↑4.8
4/20 15:30	60.3	↑4.9
4/20 15:40	65.0	↑4.7
4/20 15:50	69.6	↑4.6
4/20 16:00	74.1	↑4.5
4/20 16:10	78.5	↑4.4
4/20 16:20	82.6	↑4.1
4/20 16:30	86.6	↑4.0
4/20 16:40	90.3	↑3.7
4/20 16:50	93.8	↑3.5
4/20 17:00	97.1	↑3.3
4/20 17:10	100.1	↑3.0
4/20 17:20	102.8	↑2.7
4/20 17:30	105.3	↑2.5
4/20 17:40	107.5	↑2.2
4/20 17:50	109.4	↑1.9
4/20 18:00	111.0	↑1.6
4/20 18:10	112.3	↑1.3
4/20 18:20	113.4	↑1.1
4/20 18:30	114.2	↑0.8
4/20 18:40	114.7	↑0.5
4/20 18:50	114.9	↑0.2	満潮
4/20 19:00	114.8	↓-0.1
4/20 19:10	114.5	↓-0.3
4/20 19:20	113.9	↓-0.6
4/20 19:30	113.1	↓-0.8
4/20 19:40	112.0	↓-1.1
4/20 19:50	110.8	↓-1.2
4/20 20:00	109.4	↓-1.4
4/20 20:10	107.8	↓-1.6
4/20 20:20	106.0	↓-1.8
4/20 20:30	104.2	↓-1.8
4/20 20:40	102.3	↓-1.9
4/20 20:50	100.3	↓-2.0
4/20 21:00	98.2	↓-2.1
4/20 21:10	96.2	↓-2.0
4/20 21:20	94.2	↓-2.0
4/20 21:30	92.2	↓-2.0
4/20 21:40	90.3	↓-1.9
4/20 21:50	88.4	↓-1.9
4/20 22:00	86.7	↓-1.7
4/20 22:10	85.1	↓-1.6
4/20 22:20	83.6	↓-1.5
4/20 22:30	82.3	↓-1.3
4/20 22:40	81.1	↓-1.2
4/20 22:50	80.2	↓-0.9
4/20 23:00	79.4	↓-0.8
4/20 23:10	78.8	↓-0.6
4/20 23:20	78.4	↓-0.4
4/20 23:30	78.2	↓-0.2	干潮
4/20 23:40	78.2	0
4/20 23:50	78.4	↑0.2