20 (日)	09:05	03:04	21:30	15:24
	128cm	27cm	120cm	8cm
大潮 出 05:42 入 18:53 出 04:30 入 17:33 潮干狩り ◎ 13:30～17:12

八幡（福岡）2031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	66.7	↓-3.7
4/20 00:10	63.2	↓-3.5
4/20 00:20	59.7	↓-3.5
4/20 00:30	56.4	↓-3.3
4/20 00:40	53.1	↓-3.3
4/20 00:50	50.0	↓-3.1
4/20 01:00	47.0	↓-3.0
4/20 01:10	44.1	↓-2.9
4/20 01:20	41.4	↓-2.7
4/20 01:30	38.8	↓-2.6
4/20 01:40	36.5	↓-2.3
4/20 01:50	34.3	↓-2.2
4/20 02:00	32.4	↓-1.9
4/20 02:10	30.6	↓-1.8
4/20 02:20	29.2	↓-1.4
4/20 02:30	28.0	↓-1.2
4/20 02:40	27.1	↓-0.9
4/20 02:50	26.5	↓-0.6
4/20 03:00	26.2	↓-0.3	干潮
4/20 03:10	26.3	↑0.1
4/20 03:20	26.7	↑0.4
4/20 03:30	27.4	↑0.7
4/20 03:40	28.5	↑1.1
4/20 03:50	29.9	↑1.4
4/20 04:00	31.7	↑1.8
4/20 04:10	33.8	↑2.1
4/20 04:20	36.2	↑2.4
4/20 04:30	38.8	↑2.6
4/20 04:40	41.8	↑3.0
4/20 04:50	45.0	↑3.2
4/20 05:00	48.4	↑3.4
4/20 05:10	52.1	↑3.7
4/20 05:20	55.9	↑3.8
4/20 05:30	59.9	↑4.0
4/20 05:40	63.9	↑4.0
4/20 05:50	68.1	↑4.2
4/20 06:00	72.4	↑4.3
4/20 06:10	76.6	↑4.2
4/20 06:20	80.9	↑4.3
4/20 06:30	85.2	↑4.3
4/20 06:40	89.4	↑4.2
4/20 06:50	93.6	↑4.2
4/20 07:00	97.7	↑4.1
4/20 07:10	101.6	↑3.9
4/20 07:20	105.4	↑3.8
4/20 07:30	108.9	↑3.5
4/20 07:40	112.3	↑3.4
4/20 07:50	115.4	↑3.1
4/20 08:00	118.2	↑2.8
4/20 08:10	120.7	↑2.5
4/20 08:20	122.8	↑2.1
4/20 08:30	124.5	↑1.7
4/20 08:40	125.8	↑1.3
4/20 08:50	126.7	↑0.9
4/20 09:00	127.2	↑0.5	満潮
4/20 09:10	127.1	↓-0.1
4/20 09:20	126.6	↓-0.5
4/20 09:30	125.7	↓-0.9
4/20 09:40	124.2	↓-1.5
4/20 09:50	122.4	↓-1.8
4/20 10:00	120.0	↓-2.4
4/20 10:10	117.3	↓-2.7
4/20 10:20	114.2	↓-3.1
4/20 10:30	110.7	↓-3.5
4/20 10:40	107.0	↓-3.7
4/20 10:50	102.9	↓-4.1
4/20 11:00	98.6	↓-4.3
4/20 11:10	94.2	↓-4.4
4/20 11:20	89.5	↓-4.7
4/20 11:30	84.8	↓-4.7
4/20 11:40	80.0	↓-4.8
4/20 11:50	75.1	↓-4.9	最大潮位差
4/20 12:00	70.3	↓-4.8
4/20 12:10	65.4	↓-4.9	最大潮位差
4/20 12:20	60.7	↓-4.7
4/20 12:30	56.0	↓-4.7
4/20 12:40	51.4	↓-4.6
4/20 12:50	46.9	↓-4.5
4/20 13:00	42.5	↓-4.4
4/20 13:10	38.4	↓-4.1
4/20 13:20	34.4	↓-4.0
4/20 13:30	30.6	↓-3.8
4/20 13:40	27.0	↓-3.6
4/20 13:50	23.7	↓-3.3
4/20 14:00	20.6	↓-3.1
4/20 14:10	17.8	↓-2.8
4/20 14:20	15.2	↓-2.6
4/20 14:30	13.0	↓-2.2
4/20 14:40	11.2	↓-1.8
4/20 14:50	9.7	↓-1.5
4/20 15:00	8.6	↓-1.1
4/20 15:10	7.8	↓-0.8
4/20 15:20	7.5	↓-0.3	干潮
4/20 15:30	7.6	↑0.1
4/20 15:40	8.1	↑0.5
4/20 15:50	9.0	↑0.9
4/20 16:00	10.4	↑1.4
4/20 16:10	12.1	↑1.7
4/20 16:20	14.3	↑2.2
4/20 16:30	16.8	↑2.5
4/20 16:40	19.6	↑2.8
4/20 16:50	22.8	↑3.2
4/20 17:00	26.3	↑3.5
4/20 17:10	30.1	↑3.8
4/20 17:20	34.0	↑3.9
4/20 17:30	38.2	↑4.2
4/20 17:40	42.6	↑4.4
4/20 17:50	47.1	↑4.5
4/20 18:00	51.7	↑4.6
4/20 18:10	56.3	↑4.6
4/20 18:20	61.0	↑4.7
4/20 18:30	65.7	↑4.7
4/20 18:40	70.4	↑4.7
4/20 18:50	75.1	↑4.7
4/20 19:00	79.6	↑4.5
4/20 19:10	84.1	↑4.5
4/20 19:20	88.4	↑4.3
4/20 19:30	92.6	↑4.2
4/20 19:40	96.5	↑3.9
4/20 19:50	100.3	↑3.8
4/20 20:00	103.8	↑3.5
4/20 20:10	107.0	↑3.2
4/20 20:20	109.9	↑2.9
4/20 20:30	112.5	↑2.6
4/20 20:40	114.7	↑2.2
4/20 20:50	116.6	↑1.9
4/20 21:00	118.0	↑1.4
4/20 21:10	119.1	↑1.1
4/20 21:20	119.7	↑0.6	満潮
4/20 21:30	119.9	↑0.2	満潮
4/20 21:40	119.6	↓-0.3
4/20 21:50	118.9	↓-0.7
4/20 22:00	117.8	↓-1.1
4/20 22:10	116.3	↓-1.5
4/20 22:20	114.4	↓-1.9
4/20 22:30	112.1	↓-2.3
4/20 22:40	109.5	↓-2.6
4/20 22:50	106.7	↓-2.8
4/20 23:00	103.5	↓-3.2
4/20 23:10	100.2	↓-3.3
4/20 23:20	96.7	↓-3.5
4/20 23:30	93.0	↓-3.7
4/20 23:40	89.3	↓-3.7
4/20 23:50	85.5	↓-3.8