20 (火)	03:03	09:38	16:10	21:43
	120cm	12cm	120cm	52cm
大潮 出 04:59 入 18:16 出 17:45 入 04:06 潮干狩り ◎ 07:42～11:30

日立（茨城）2027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	80.3	↑3.4
4/20 00:10	83.8	↑3.5
4/20 00:20	87.2	↑3.4
4/20 00:30	90.5	↑3.3
4/20 00:40	93.8	↑3.3
4/20 00:50	96.9	↑3.1
4/20 01:00	100.0	↑3.1
4/20 01:10	102.9	↑2.9
4/20 01:20	105.6	↑2.7
4/20 01:30	108.1	↑2.5
4/20 01:40	110.4	↑2.3
4/20 01:50	112.5	↑2.1
4/20 02:00	114.4	↑1.9
4/20 02:10	116.0	↑1.6
4/20 02:20	117.3	↑1.3
4/20 02:30	118.4	↑1.1
4/20 02:40	119.2	↑0.8
4/20 02:50	119.7	↑0.5
4/20 03:00	119.9	↑0.2	満潮
4/20 03:10	119.8	↓-0.1
4/20 03:20	119.4	↓-0.4
4/20 03:30	118.7	↓-0.7
4/20 03:40	117.7	↓-1.0
4/20 03:50	116.3	↓-1.4
4/20 04:00	114.7	↓-1.6
4/20 04:10	112.7	↓-2.0
4/20 04:20	110.4	↓-2.3
4/20 04:30	107.9	↓-2.5
4/20 04:40	105.0	↓-2.9
4/20 04:50	101.9	↓-3.1
4/20 05:00	98.5	↓-3.4
4/20 05:10	94.9	↓-3.6
4/20 05:20	91.2	↓-3.7
4/20 05:30	87.2	↓-4.0
4/20 05:40	83.1	↓-4.1
4/20 05:50	78.9	↓-4.2
4/20 06:00	74.6	↓-4.3
4/20 06:10	70.2	↓-4.4	最大潮位差
4/20 06:20	65.8	↓-4.4	最大潮位差
4/20 06:30	61.4	↓-4.4	最大潮位差
4/20 06:40	57.1	↓-4.3
4/20 06:50	52.8	↓-4.3
4/20 07:00	48.7	↓-4.1
4/20 07:10	44.6	↓-4.1
4/20 07:20	40.7	↓-3.9
4/20 07:30	37.0	↓-3.7
4/20 07:40	33.4	↓-3.6
4/20 07:50	30.1	↓-3.3
4/20 08:00	27.0	↓-3.1
4/20 08:10	24.2	↓-2.8
4/20 08:20	21.6	↓-2.6
4/20 08:30	19.3	↓-2.3
4/20 08:40	17.3	↓-2.0
4/20 08:50	15.5	↓-1.8
4/20 09:00	14.1	↓-1.4
4/20 09:10	13.0	↓-1.1
4/20 09:20	12.3	↓-0.7
4/20 09:30	11.9	↓-0.4	干潮
4/20 09:40	11.8	↓-0.1
4/20 09:50	12.1	↑0.3
4/20 10:00	12.7	↑0.6
4/20 10:10	13.7	↑1.0
4/20 10:20	15.0	↑1.3
4/20 10:30	16.7	↑1.7
4/20 10:40	18.7	↑2.0
4/20 10:50	21.0	↑2.3
4/20 11:00	23.6	↑2.6
4/20 11:10	26.6	↑3.0
4/20 11:20	29.8	↑3.2
4/20 11:30	33.2	↑3.4
4/20 11:40	36.9	↑3.7
4/20 11:50	40.7	↑3.8
4/20 12:00	44.7	↑4.0
4/20 12:10	48.9	↑4.2
4/20 12:20	53.1	↑4.2
4/20 12:30	57.4	↑4.3
4/20 12:40	61.8	↑4.4	最大潮位差
4/20 12:50	66.1	↑4.3
4/20 13:00	70.5	↑4.4	最大潮位差
4/20 13:10	74.8	↑4.3
4/20 13:20	79.0	↑4.2
4/20 13:30	83.1	↑4.1
4/20 13:40	87.0	↑3.9
4/20 13:50	90.9	↑3.9
4/20 14:00	94.5	↑3.6
4/20 14:10	98.0	↑3.5
4/20 14:20	101.3	↑3.3
4/20 14:30	104.3	↑3.0
4/20 14:40	107.1	↑2.8
4/20 14:50	109.6	↑2.5
4/20 15:00	111.9	↑2.3
4/20 15:10	113.9	↑2.0
4/20 15:20	115.6	↑1.7
4/20 15:30	117.0	↑1.4
4/20 15:40	118.1	↑1.1
4/20 15:50	118.8	↑0.7
4/20 16:00	119.3	↑0.5	満潮
4/20 16:10	119.4	↑0.1	満潮
4/20 16:20	119.2	↓-0.2
4/20 16:30	118.7	↓-0.5
4/20 16:40	117.9	↓-0.8
4/20 16:50	116.7	↓-1.2
4/20 17:00	115.2	↓-1.5
4/20 17:10	113.5	↓-1.7
4/20 17:20	111.5	↓-2.0
4/20 17:30	109.2	↓-2.3
4/20 17:40	106.8	↓-2.4
4/20 17:50	104.1	↓-2.7
4/20 18:00	101.3	↓-2.8
4/20 18:10	98.3	↓-3.0
4/20 18:20	95.2	↓-3.1
4/20 18:30	92.0	↓-3.2
4/20 18:40	88.8	↓-3.2
4/20 18:50	85.6	↓-3.2
4/20 19:00	82.4	↓-3.2
4/20 19:10	79.2	↓-3.2
4/20 19:20	76.1	↓-3.1
4/20 19:30	73.1	↓-3.0
4/20 19:40	70.3	↓-2.8
4/20 19:50	67.5	↓-2.8
4/20 20:00	65.0	↓-2.5
4/20 20:10	62.6	↓-2.4
4/20 20:20	60.4	↓-2.2
4/20 20:30	58.4	↓-2.0
4/20 20:40	56.6	↓-1.8
4/20 20:50	55.1	↓-1.5
4/20 21:00	53.8	↓-1.3
4/20 21:10	52.8	↓-1.0
4/20 21:20	52.1	↓-0.7
4/20 21:30	51.6	↓-0.5
4/20 21:40	51.4	↓-0.2	干潮
4/20 21:50	51.5	↑0.1
4/20 22:00	51.8	↑0.3
4/20 22:10	52.5	↑0.7
4/20 22:20	53.4	↑0.9
4/20 22:30	54.7	↑1.3
4/20 22:40	56.2	↑1.5
4/20 22:50	57.9	↑1.7
4/20 23:00	60.0	↑2.1
4/20 23:10	62.2	↑2.2
4/20 23:20	64.8	↑2.6
4/20 23:30	67.5	↑2.7
4/20 23:40	70.4	↑2.9
4/20 23:50	73.4	↑3.0