31 (日)	05:04	09:43	14:49	22:16
	121cm	91cm	131cm	-12cm
大潮 出 06:49 入 16:34 出 16:05 入 06:14

大洗（茨城）2028年12月31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
12/31 00:00	27.8	↑4.1
12/31 00:10	32.0	↑4.2
12/31 00:20	36.3	↑4.3
12/31 00:30	40.7	↑4.4
12/31 00:40	45.2	↑4.5
12/31 00:50	49.7	↑4.5
12/31 01:00	54.2	↑4.5
12/31 01:10	58.8	↑4.6
12/31 01:20	63.2	↑4.4
12/31 01:30	67.7	↑4.5
12/31 01:40	72.0	↑4.3
12/31 01:50	76.3	↑4.3
12/31 02:00	80.4	↑4.1
12/31 02:10	84.4	↑4.0
12/31 02:20	88.2	↑3.8
12/31 02:30	91.9	↑3.7
12/31 02:40	95.4	↑3.5
12/31 02:50	98.7	↑3.3
12/31 03:00	101.7	↑3.0
12/31 03:10	104.6	↑2.9
12/31 03:20	107.2	↑2.6
12/31 03:30	109.6	↑2.4
12/31 03:40	111.8	↑2.2
12/31 03:50	113.7	↑1.9
12/31 04:00	115.3	↑1.6
12/31 04:10	116.8	↑1.5
12/31 04:20	117.9	↑1.1
12/31 04:30	118.8	↑0.9
12/31 04:40	119.5	↑0.7
12/31 04:50	119.9	↑0.4
12/31 05:00	120.1	↑0.2	満潮
12/31 05:10	120.1	0
12/31 05:20	119.8	↓-0.3
12/31 05:30	119.4	↓-0.4
12/31 05:40	118.7	↓-0.7
12/31 05:50	117.9	↓-0.8
12/31 06:00	116.9	↓-1.0
12/31 06:10	115.7	↓-1.2
12/31 06:20	114.4	↓-1.3
12/31 06:30	113.0	↓-1.4
12/31 06:40	111.5	↓-1.5
12/31 06:50	110.0	↓-1.5
12/31 07:00	108.4	↓-1.6
12/31 07:10	106.7	↓-1.7
12/31 07:20	105.1	↓-1.6
12/31 07:30	103.5	↓-1.6
12/31 07:40	101.8	↓-1.7
12/31 07:50	100.3	↓-1.5
12/31 08:00	98.8	↓-1.5
12/31 08:10	97.4	↓-1.4
12/31 08:20	96.1	↓-1.3
12/31 08:30	94.9	↓-1.2
12/31 08:40	93.8	↓-1.1
12/31 08:50	92.9	↓-0.9
12/31 09:00	92.1	↓-0.8
12/31 09:10	91.4	↓-0.7
12/31 09:20	91.0	↓-0.4
12/31 09:30	90.7	↓-0.3
12/31 09:40	90.5	↓-0.2	干潮
12/31 09:50	90.6	↑0.1
12/31 10:00	90.8	↑0.2
12/31 10:10	91.2	↑0.4
12/31 10:20	91.8	↑0.6
12/31 10:30	92.6	↑0.8
12/31 10:40	93.5	↑0.9
12/31 10:50	94.6	↑1.1
12/31 11:00	95.9	↑1.3
12/31 11:10	97.3	↑1.4
12/31 11:20	98.8	↑1.5
12/31 11:30	100.5	↑1.7
12/31 11:40	102.3	↑1.8
12/31 11:50	104.2	↑1.9
12/31 12:00	106.1	↑1.9
12/31 12:10	108.1	↑2.0
12/31 12:20	110.2	↑2.1
12/31 12:30	112.3	↑2.1
12/31 12:40	114.3	↑2.0
12/31 12:50	116.3	↑2.0
12/31 13:00	118.3	↑2.0
12/31 13:10	120.2	↑1.9
12/31 13:20	122.0	↑1.8
12/31 13:30	123.7	↑1.7
12/31 13:40	125.2	↑1.5
12/31 13:50	126.6	↑1.4
12/31 14:00	127.8	↑1.2
12/31 14:10	128.8	↑1.0
12/31 14:20	129.5	↑0.7
12/31 14:30	130.1	↑0.6
12/31 14:40	130.4	↑0.3	満潮
12/31 14:50	130.5	↑0.1
12/31 15:00	130.3	↓-0.2
12/31 15:10	129.9	↓-0.4
12/31 15:20	129.1	↓-0.8
12/31 15:30	128.1	↓-1.0
12/31 15:40	126.8	↓-1.3
12/31 15:50	125.2	↓-1.6
12/31 16:00	123.4	↓-1.8
12/31 16:10	121.2	↓-2.2
12/31 16:20	118.8	↓-2.4
12/31 16:30	116.0	↓-2.8
12/31 16:40	113.0	↓-3.0
12/31 16:50	109.8	↓-3.2
12/31 17:00	106.2	↓-3.6
12/31 17:10	102.4	↓-3.8
12/31 17:20	98.4	↓-4.0
12/31 17:30	94.2	↓-4.2
12/31 17:40	89.7	↓-4.5
12/31 17:50	85.1	↓-4.6
12/31 18:00	80.4	↓-4.7
12/31 18:10	75.4	↓-5.0
12/31 18:20	70.4	↓-5.0
12/31 18:30	65.3	↓-5.1
12/31 18:40	60.1	↓-5.2	最大潮位差
12/31 18:50	54.9	↓-5.2	最大潮位差
12/31 19:00	49.8	↓-5.1
12/31 19:10	44.6	↓-5.2	最大潮位差
12/31 19:20	39.5	↓-5.1
12/31 19:30	34.5	↓-5.0
12/31 19:40	29.6	↓-4.9
12/31 19:50	24.9	↓-4.7
12/31 20:00	20.4	↓-4.5
12/31 20:10	16.0	↓-4.4
12/31 20:20	11.9	↓-4.1
12/31 20:30	8.1	↓-3.8
12/31 20:40	4.5	↓-3.6
12/31 20:50	1.2	↓-3.3
12/31 21:00	-1.8	↓-3.0
12/31 21:10	-4.4	↓-2.6
12/31 21:20	-6.7	↓-2.3
12/31 21:30	-8.6	↓-1.9
12/31 21:40	-10.1	↓-1.5
12/31 21:50	-11.3	↓-1.2
12/31 22:00	-12.1	↓-0.8
12/31 22:10	-12.5	↓-0.4	干潮
12/31 22:20	-12.5	0
12/31 22:30	-12.1	↑0.4
12/31 22:40	-11.3	↑0.8
12/31 22:50	-10.1	↑1.2
12/31 23:00	-8.5	↑1.6
12/31 23:10	-6.6	↑1.9
12/31 23:20	-4.3	↑2.3
12/31 23:30	-1.7	↑2.6
12/31 23:40	1.3	↑3.0
12/31 23:50	4.5	↑3.2