20 (金)	03:08	10:23	17:25	22:27
	135cm	10cm	126cm	87cm
大潮 出 04:21 入 18:59 出 04:31 入 19:04 潮干狩り ◎ 08:21～12:20

日立（茨城）2031年06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
6/20 00:00	104.0	↑2.1
6/20 00:10	106.2	↑2.2
6/20 00:20	108.5	↑2.3
6/20 00:30	110.8	↑2.3
6/20 00:40	113.1	↑2.3
6/20 00:50	115.4	↑2.3
6/20 01:00	117.6	↑2.2
6/20 01:10	119.8	↑2.2
6/20 01:20	121.9	↑2.1
6/20 01:30	123.9	↑2.0
6/20 01:40	125.7	↑1.8
6/20 01:50	127.4	↑1.7
6/20 02:00	129.0	↑1.6
6/20 02:10	130.3	↑1.3
6/20 02:20	131.5	↑1.2
6/20 02:30	132.4	↑0.9
6/20 02:40	133.2	↑0.8
6/20 02:50	133.7	↑0.5
6/20 03:00	134.0	↑0.3	満潮
6/20 03:10	134.1	↑0.1
6/20 03:20	133.9	↓-0.2
6/20 03:30	133.4	↓-0.5
6/20 03:40	132.7	↓-0.7
6/20 03:50	131.7	↓-1.0
6/20 04:00	130.5	↓-1.2
6/20 04:10	129.0	↓-1.5
6/20 04:20	127.2	↓-1.8
6/20 04:30	125.1	↓-2.1
6/20 04:40	122.8	↓-2.3
6/20 04:50	120.2	↓-2.6
6/20 05:00	117.3	↓-2.9
6/20 05:10	114.1	↓-3.2
6/20 05:20	110.7	↓-3.4
6/20 05:30	107.1	↓-3.6
6/20 05:40	103.3	↓-3.8
6/20 05:50	99.2	↓-4.1
6/20 06:00	95.0	↓-4.2
6/20 06:10	90.6	↓-4.4
6/20 06:20	86.1	↓-4.5
6/20 06:30	81.6	↓-4.5
6/20 06:40	76.9	↓-4.7	最大潮位差
6/20 06:50	72.2	↓-4.7	最大潮位差
6/20 07:00	67.5	↓-4.7	最大潮位差
6/20 07:10	62.9	↓-4.6
6/20 07:20	58.3	↓-4.6
6/20 07:30	53.7	↓-4.6
6/20 07:40	49.3	↓-4.4
6/20 07:50	45.1	↓-4.2
6/20 08:00	41.0	↓-4.1
6/20 08:10	37.0	↓-4.0
6/20 08:20	33.3	↓-3.7
6/20 08:30	29.8	↓-3.5
6/20 08:40	26.6	↓-3.2
6/20 08:50	23.6	↓-3.0
6/20 09:00	20.8	↓-2.8
6/20 09:10	18.4	↓-2.4
6/20 09:20	16.2	↓-2.2
6/20 09:30	14.4	↓-1.8
6/20 09:40	12.8	↓-1.6
6/20 09:50	11.6	↓-1.2
6/20 10:00	10.7	↓-0.9
6/20 10:10	10.1	↓-0.6
6/20 10:20	9.9	↓-0.2	干潮
6/20 10:30	10.0	↑0.1
6/20 10:40	10.5	↑0.5
6/20 10:50	11.3	↑0.8
6/20 11:00	12.5	↑1.2
6/20 11:10	14.0	↑1.5
6/20 11:20	15.8	↑1.8
6/20 11:30	18.0	↑2.2
6/20 11:40	20.5	↑2.5
6/20 11:50	23.2	↑2.7
6/20 12:00	26.3	↑3.1
6/20 12:10	29.6	↑3.3
6/20 12:20	33.2	↑3.6
6/20 12:30	36.9	↑3.7
6/20 12:40	40.9	↑4.0
6/20 12:50	44.9	↑4.0
6/20 13:00	49.1	↑4.2
6/20 13:10	53.4	↑4.3
6/20 13:20	57.8	↑4.4
6/20 13:30	62.1	↑4.3
6/20 13:40	66.5	↑4.4
6/20 13:50	70.9	↑4.4
6/20 14:00	75.2	↑4.3
6/20 14:10	79.4	↑4.2
6/20 14:20	83.5	↑4.1
6/20 14:30	87.6	↑4.1
6/20 14:40	91.5	↑3.9
6/20 14:50	95.2	↑3.7
6/20 15:00	98.8	↑3.6
6/20 15:10	102.2	↑3.4
6/20 15:20	105.4	↑3.2
6/20 15:30	108.4	↑3.0
6/20 15:40	111.2	↑2.8
6/20 15:50	113.8	↑2.6
6/20 16:00	116.2	↑2.4
6/20 16:10	118.3	↑2.1
6/20 16:20	120.1	↑1.8
6/20 16:30	121.7	↑1.6
6/20 16:40	123.1	↑1.4
6/20 16:50	124.1	↑1.0
6/20 17:00	124.9	↑0.8
6/20 17:10	125.4	↑0.5
6/20 17:20	125.7	↑0.3	満潮
6/20 17:30	125.6	↓-0.1
6/20 17:40	125.4	↓-0.2
6/20 17:50	124.8	↓-0.6
6/20 18:00	124.0	↓-0.8
6/20 18:10	123.0	↓-1.0
6/20 18:20	121.8	↓-1.2
6/20 18:30	120.4	↓-1.4
6/20 18:40	118.9	↓-1.5
6/20 18:50	117.1	↓-1.8
6/20 19:00	115.3	↓-1.8
6/20 19:10	113.4	↓-1.9
6/20 19:20	111.4	↓-2.0
6/20 19:30	109.4	↓-2.0
6/20 19:40	107.4	↓-2.0
6/20 19:50	105.3	↓-2.1
6/20 20:00	103.3	↓-2.0
6/20 20:10	101.4	↓-1.9
6/20 20:20	99.5	↓-1.9
6/20 20:30	97.6	↓-1.9
6/20 20:40	95.9	↓-1.7
6/20 20:50	94.3	↓-1.6
6/20 21:00	92.8	↓-1.5
6/20 21:10	91.5	↓-1.3
6/20 21:20	90.3	↓-1.2
6/20 21:30	89.2	↓-1.1
6/20 21:40	88.3	↓-0.9
6/20 21:50	87.5	↓-0.8
6/20 22:00	87.0	↓-0.5
6/20 22:10	86.6	↓-0.4
6/20 22:20	86.4	↓-0.2	干潮
6/20 22:30	86.4	0
6/20 22:40	86.6	↑0.2
6/20 22:50	86.9	↑0.3
6/20 23:00	87.5	↑0.6
6/20 23:10	88.3	↑0.8
6/20 23:20	89.3	↑1.0
6/20 23:30	90.5	↑1.2
6/20 23:40	91.9	↑1.4
6/20 23:50	93.4	↑1.5