20 (金)	03:06	10:20	17:28	22:26
	136cm	10cm	127cm	90cm
大潮 出 04:21 入 18:59 出 04:31 入 19:04 潮干狩り ◎ 08:20～12:20

大洗（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	107.0	↑2.0
6/20 00:10	109.1	↑2.1
6/20 00:20	111.2	↑2.1
6/20 00:30	113.4	↑2.2
6/20 00:40	115.6	↑2.2
6/20 00:50	117.7	↑2.1
6/20 01:00	119.9	↑2.2
6/20 01:10	121.9	↑2.0
6/20 01:20	123.9	↑2.0
6/20 01:30	125.8	↑1.9
6/20 01:40	127.6	↑1.8
6/20 01:50	129.3	↑1.7
6/20 02:00	130.7	↑1.4
6/20 02:10	132.1	↑1.4
6/20 02:20	133.2	↑1.1
6/20 02:30	134.1	↑0.9
6/20 02:40	134.8	↑0.7
6/20 02:50	135.3	↑0.5
6/20 03:00	135.5	↑0.2	満潮
6/20 03:10	135.5	0
6/20 03:20	135.3	↓-0.2
6/20 03:30	134.8	↓-0.5
6/20 03:40	134.0	↓-0.8
6/20 03:50	132.9	↓-1.1
6/20 04:00	131.6	↓-1.3
6/20 04:10	130.0	↓-1.6
6/20 04:20	128.1	↓-1.9
6/20 04:30	126.0	↓-2.1
6/20 04:40	123.5	↓-2.5
6/20 04:50	120.9	↓-2.6
6/20 05:00	117.9	↓-3.0
6/20 05:10	114.7	↓-3.2
6/20 05:20	111.3	↓-3.4
6/20 05:30	107.7	↓-3.6
6/20 05:40	103.8	↓-3.9
6/20 05:50	99.8	↓-4.0
6/20 06:00	95.6	↓-4.2
6/20 06:10	91.2	↓-4.4
6/20 06:20	86.7	↓-4.5
6/20 06:30	82.2	↓-4.5
6/20 06:40	77.5	↓-4.7	最大潮位差
6/20 06:50	72.8	↓-4.7	最大潮位差
6/20 07:00	68.1	↓-4.7	最大潮位差
6/20 07:10	63.4	↓-4.7	最大潮位差
6/20 07:20	58.8	↓-4.6
6/20 07:30	54.2	↓-4.6
6/20 07:40	49.7	↓-4.5
6/20 07:50	45.3	↓-4.4
6/20 08:00	41.1	↓-4.2
6/20 08:10	37.1	↓-4.0
6/20 08:20	33.2	↓-3.9
6/20 08:30	29.6	↓-3.6
6/20 08:40	26.2	↓-3.4
6/20 08:50	23.1	↓-3.1
6/20 09:00	20.3	↓-2.8
6/20 09:10	17.8	↓-2.5
6/20 09:20	15.6	↓-2.2
6/20 09:30	13.7	↓-1.9
6/20 09:40	12.1	↓-1.6
6/20 09:50	10.9	↓-1.2
6/20 10:00	10.0	↓-0.9
6/20 10:10	9.5	↓-0.5	干潮
6/20 10:20	9.4	↓-0.1	干潮
6/20 10:30	9.6	↑0.2
6/20 10:40	10.2	↑0.6
6/20 10:50	11.1	↑0.9
6/20 11:00	12.4	↑1.3
6/20 11:10	14.0	↑1.6
6/20 11:20	15.9	↑1.9
6/20 11:30	18.2	↑2.3
6/20 11:40	20.7	↑2.5
6/20 11:50	23.6	↑2.9
6/20 12:00	26.7	↑3.1
6/20 12:10	30.0	↑3.3
6/20 12:20	33.6	↑3.6
6/20 12:30	37.4	↑3.8
6/20 12:40	41.3	↑3.9
6/20 12:50	45.4	↑4.1
6/20 13:00	49.6	↑4.2
6/20 13:10	53.9	↑4.3
6/20 13:20	58.2	↑4.3
6/20 13:30	62.6	↑4.4
6/20 13:40	66.9	↑4.3
6/20 13:50	71.3	↑4.4
6/20 14:00	75.6	↑4.3
6/20 14:10	79.8	↑4.2
6/20 14:20	84.0	↑4.2
6/20 14:30	88.0	↑4.0
6/20 14:40	91.9	↑3.9
6/20 14:50	95.7	↑3.8
6/20 15:00	99.3	↑3.6
6/20 15:10	102.7	↑3.4
6/20 15:20	105.9	↑3.2
6/20 15:30	108.9	↑3.0
6/20 15:40	111.7	↑2.8
6/20 15:50	114.2	↑2.5
6/20 16:00	116.6	↑2.4
6/20 16:10	118.6	↑2.0
6/20 16:20	120.5	↑1.9
6/20 16:30	122.0	↑1.5
6/20 16:40	123.4	↑1.4
6/20 16:50	124.4	↑1.0
6/20 17:00	125.2	↑0.8
6/20 17:10	125.8	↑0.6
6/20 17:20	126.1	↑0.3	満潮
6/20 17:30	126.1	0
6/20 17:40	125.9	↓-0.2
6/20 17:50	125.5	↓-0.4
6/20 18:00	124.9	↓-0.6
6/20 18:10	124.0	↓-0.9
6/20 18:20	123.0	↓-1.0
6/20 18:30	121.8	↓-1.2
6/20 18:40	120.4	↓-1.4
6/20 18:50	118.9	↓-1.5
6/20 19:00	117.2	↓-1.7
6/20 19:10	115.5	↓-1.7
6/20 19:20	113.7	↓-1.8
6/20 19:30	111.8	↓-1.9
6/20 19:40	109.9	↓-1.9
6/20 19:50	108.0	↓-1.9
6/20 20:00	106.0	↓-2.0
6/20 20:10	104.1	↓-1.9
6/20 20:20	102.3	↓-1.8
6/20 20:30	100.5	↓-1.8
6/20 20:40	98.8	↓-1.7
6/20 20:50	97.1	↓-1.7
6/20 21:00	95.6	↓-1.5
6/20 21:10	94.3	↓-1.3
6/20 21:20	93.0	↓-1.3
6/20 21:30	91.9	↓-1.1
6/20 21:40	91.0	↓-0.9
6/20 21:50	90.3	↓-0.7
6/20 22:00	89.7	↓-0.6
6/20 22:10	89.3	↓-0.4
6/20 22:20	89.1	↓-0.2	干潮
6/20 22:30	89.1	0
6/20 22:40	89.3	↑0.2
6/20 22:50	89.7	↑0.4
6/20 23:00	90.3	↑0.6
6/20 23:10	91.1	↑0.8
6/20 23:20	92.1	↑1.0
6/20 23:30	93.3	↑1.2
6/20 23:40	94.7	↑1.4
6/20 23:50	96.2	↑1.5