20 (日)	06:15	00:33	-	14:36
	117cm	92cm	-	22cm
小潮 出 04:59 入 18:17 出 00:18 入 09:35 潮干狩り ○ 12:36～16:39

日立（茨城）2025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	91.8	↓-0.2
4/20 00:10	91.7	↓-0.1
4/20 00:20	91.6	↓-0.1
4/20 00:30	91.6	0	干潮
4/20 00:40	91.6	0
4/20 00:50	91.7	↑0.1
4/20 01:00	91.8	↑0.1
4/20 01:10	92.0	↑0.2
4/20 01:20	92.3	↑0.3
4/20 01:30	92.6	↑0.3
4/20 01:40	93.0	↑0.4
4/20 01:50	93.5	↑0.5
4/20 02:00	94.1	↑0.6
4/20 02:10	94.7	↑0.6
4/20 02:20	95.4	↑0.7
4/20 02:30	96.2	↑0.8
4/20 02:40	97.1	↑0.9
4/20 02:50	98.0	↑0.9
4/20 03:00	99.0	↑1.0
4/20 03:10	100.0	↑1.0
4/20 03:20	101.1	↑1.1
4/20 03:30	102.2	↑1.1
4/20 03:40	103.4	↑1.2
4/20 03:50	104.6	↑1.2
4/20 04:00	105.8	↑1.2
4/20 04:10	107.0	↑1.2
4/20 04:20	108.2	↑1.2
4/20 04:30	109.3	↑1.1
4/20 04:40	110.4	↑1.1
4/20 04:50	111.5	↑1.1
4/20 05:00	112.5	↑1.0
4/20 05:10	113.4	↑0.9
4/20 05:20	114.2	↑0.8
4/20 05:30	114.9	↑0.7
4/20 05:40	115.5	↑0.6
4/20 05:50	115.9	↑0.4
4/20 06:00	116.2	↑0.3
4/20 06:10	116.3	↑0.1	満潮
4/20 06:20	116.3	0
4/20 06:30	116.2	↓-0.1
4/20 06:40	115.8	↓-0.4
4/20 06:50	115.3	↓-0.5
4/20 07:00	114.6	↓-0.7
4/20 07:10	113.8	↓-0.8
4/20 07:20	112.7	↓-1.1
4/20 07:30	111.5	↓-1.2
4/20 07:40	110.1	↓-1.4
4/20 07:50	108.6	↓-1.5
4/20 08:00	106.9	↓-1.7
4/20 08:10	105.0	↓-1.9
4/20 08:20	103.0	↓-2.0
4/20 08:30	100.8	↓-2.2
4/20 08:40	98.5	↓-2.3
4/20 08:50	96.1	↓-2.4
4/20 09:00	93.5	↓-2.6
4/20 09:10	90.8	↓-2.7
4/20 09:20	88.0	↓-2.8
4/20 09:30	85.1	↓-2.9
4/20 09:40	82.2	↓-2.9
4/20 09:50	79.1	↓-3.1
4/20 10:00	76.1	↓-3.0
4/20 10:10	73.0	↓-3.1
4/20 10:20	69.9	↓-3.1
4/20 10:30	66.7	↓-3.2	最大潮位差
4/20 10:40	63.6	↓-3.1
4/20 10:50	60.5	↓-3.1
4/20 11:00	57.5	↓-3.0
4/20 11:10	54.5	↓-3.0
4/20 11:20	51.6	↓-2.9
4/20 11:30	48.8	↓-2.8
4/20 11:40	46.0	↓-2.8
4/20 11:50	43.4	↓-2.6
4/20 12:00	40.9	↓-2.5
4/20 12:10	38.5	↓-2.4
4/20 12:20	36.3	↓-2.2
4/20 12:30	34.2	↓-2.1
4/20 12:40	32.2	↓-2.0
4/20 12:50	30.4	↓-1.8
4/20 13:00	28.7	↓-1.7
4/20 13:10	27.2	↓-1.5
4/20 13:20	25.8	↓-1.4
4/20 13:30	24.7	↓-1.1
4/20 13:40	23.6	↓-1.1
4/20 13:50	22.8	↓-0.8
4/20 14:00	22.1	↓-0.7
4/20 14:10	21.6	↓-0.5
4/20 14:20	21.2	↓-0.4
4/20 14:30	21.1	↓-0.1	干潮
4/20 14:40	21.1	0
4/20 14:50	21.3	↑0.2
4/20 15:00	21.6	↑0.3
4/20 15:10	22.1	↑0.5
4/20 15:20	22.8	↑0.7
4/20 15:30	23.6	↑0.8
4/20 15:40	24.6	↑1.0
4/20 15:50	25.7	↑1.1
4/20 16:00	27.0	↑1.3
4/20 16:10	28.4	↑1.4
4/20 16:20	30.0	↑1.6
4/20 16:30	31.6	↑1.6
4/20 16:40	33.3	↑1.7
4/20 16:50	35.2	↑1.9
4/20 17:00	37.1	↑1.9
4/20 17:10	39.1	↑2.0
4/20 17:20	41.1	↑2.0
4/20 17:30	43.2	↑2.1
4/20 17:40	45.4	↑2.2
4/20 17:50	47.5	↑2.1
4/20 18:00	49.7	↑2.2
4/20 18:10	51.9	↑2.2
4/20 18:20	54.1	↑2.2
4/20 18:30	56.3	↑2.2
4/20 18:40	58.5	↑2.2
4/20 18:50	60.6	↑2.1
4/20 19:00	62.7	↑2.1
4/20 19:10	64.8	↑2.1
4/20 19:20	66.9	↑2.1
4/20 19:30	68.9	↑2.0
4/20 19:40	70.8	↑1.9
4/20 19:50	72.8	↑2.0
4/20 20:00	74.6	↑1.8
4/20 20:10	76.4	↑1.8
4/20 20:20	78.1	↑1.7
4/20 20:30	79.7	↑1.6
4/20 20:40	81.3	↑1.6
4/20 20:50	82.8	↑1.5
4/20 21:00	84.2	↑1.4
4/20 21:10	85.5	↑1.3
4/20 21:20	86.7	↑1.2
4/20 21:30	87.8	↑1.1
4/20 21:40	88.8	↑1.0
4/20 21:50	89.8	↑1.0
4/20 22:00	90.7	↑0.9
4/20 22:10	91.4	↑0.7
4/20 22:20	92.1	↑0.7
4/20 22:30	92.8	↑0.7
4/20 22:40	93.3	↑0.5
4/20 22:50	93.8	↑0.5
4/20 23:00	94.2	↑0.4
4/20 23:10	94.6	↑0.4
4/20 23:20	94.9	↑0.3
4/20 23:30	95.2	↑0.3
4/20 23:40	95.4	↑0.2
4/20 23:50	95.6	↑0.2