20 (火)	02:10	08:55	15:31	20:52
	128cm	21cm	126cm	62cm
大潮 出 04:46 入 18:21 出 17:51 入 03:55 潮干狩り ○ 07:22～10:31

苫小牧（北海道）2027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	103.5	↑3.4
4/20 00:10	106.8	↑3.3
4/20 00:20	110.0	↑3.2
4/20 00:30	112.9	↑2.9
4/20 00:40	115.7	↑2.8
4/20 00:50	118.2	↑2.5
4/20 01:00	120.5	↑2.3
4/20 01:10	122.5	↑2.0
4/20 01:20	124.1	↑1.6
4/20 01:30	125.5	↑1.4
4/20 01:40	126.6	↑1.1
4/20 01:50	127.3	↑0.7
4/20 02:00	127.7	↑0.4	満潮
4/20 02:10	127.9	↑0.2	満潮
4/20 02:20	127.7	↓-0.2
4/20 02:30	127.3	↓-0.4
4/20 02:40	126.5	↓-0.8
4/20 02:50	125.5	↓-1.0
4/20 03:00	124.3	↓-1.2
4/20 03:10	122.8	↓-1.5
4/20 03:20	121.1	↓-1.7
4/20 03:30	119.1	↓-2.0
4/20 03:40	116.9	↓-2.2
4/20 03:50	114.5	↓-2.4
4/20 04:00	111.8	↓-2.7
4/20 04:10	108.9	↓-2.9
4/20 04:20	105.8	↓-3.1
4/20 04:30	102.5	↓-3.3
4/20 04:40	99.0	↓-3.5
4/20 04:50	95.3	↓-3.7
4/20 05:00	91.3	↓-4.0
4/20 05:10	87.3	↓-4.0
4/20 05:20	83.1	↓-4.2
4/20 05:30	78.7	↓-4.4
4/20 05:40	74.3	↓-4.4
4/20 05:50	69.9	↓-4.4
4/20 06:00	65.5	↓-4.4
4/20 06:10	61.0	↓-4.5	最大潮位差
4/20 06:20	56.7	↓-4.3
4/20 06:30	52.5	↓-4.2
4/20 06:40	48.4	↓-4.1
4/20 06:50	44.6	↓-3.8
4/20 07:00	40.9	↓-3.7
4/20 07:10	37.5	↓-3.4
4/20 07:20	34.4	↓-3.1
4/20 07:30	31.6	↓-2.8
4/20 07:40	29.1	↓-2.5
4/20 07:50	26.9	↓-2.2
4/20 08:00	25.0	↓-1.9
4/20 08:10	23.4	↓-1.6
4/20 08:20	22.2	↓-1.2
4/20 08:30	21.3	↓-0.9
4/20 08:40	20.7	↓-0.6
4/20 08:50	20.5	↓-0.2	干潮
4/20 09:00	20.5	0
4/20 09:10	20.8	↑0.3
4/20 09:20	21.4	↑0.6
4/20 09:30	22.3	↑0.9
4/20 09:40	23.5	↑1.2
4/20 09:50	24.9	↑1.4
4/20 10:00	26.7	↑1.8
4/20 10:10	28.7	↑2.0
4/20 10:20	31.1	↑2.4
4/20 10:30	33.7	↑2.6
4/20 10:40	36.5	↑2.8
4/20 10:50	39.7	↑3.2
4/20 11:00	43.1	↑3.4
4/20 11:10	46.8	↑3.7
4/20 11:20	50.7	↑3.9
4/20 11:30	54.7	↑4.0
4/20 11:40	59.0	↑4.3
4/20 11:50	63.4	↑4.4
4/20 12:00	67.9	↑4.5	最大潮位差
4/20 12:10	72.4	↑4.5	最大潮位差
4/20 12:20	76.9	↑4.5	最大潮位差
4/20 12:30	81.4	↑4.5	最大潮位差
4/20 12:40	85.9	↑4.5	最大潮位差
4/20 12:50	90.2	↑4.3
4/20 13:00	94.4	↑4.2
4/20 13:10	98.3	↑3.9
4/20 13:20	102.1	↑3.8
4/20 13:30	105.6	↑3.5
4/20 13:40	108.8	↑3.2
4/20 13:50	111.8	↑3.0
4/20 14:00	114.4	↑2.6
4/20 14:10	116.8	↑2.4
4/20 14:20	118.8	↑2.0
4/20 14:30	120.6	↑1.8
4/20 14:40	122.1	↑1.5
4/20 14:50	123.3	↑1.2
4/20 15:00	124.2	↑0.9
4/20 15:10	124.8	↑0.6
4/20 15:20	125.2	↑0.4
4/20 15:30	125.3	↑0.1	満潮
4/20 15:40	125.2	↓-0.1
4/20 15:50	124.8	↓-0.4
4/20 16:00	124.2	↓-0.6
4/20 16:10	123.3	↓-0.9
4/20 16:20	122.1	↓-1.2
4/20 16:30	120.7	↓-1.4
4/20 16:40	119.1	↓-1.6
4/20 16:50	117.2	↓-1.9
4/20 17:00	115.1	↓-2.1
4/20 17:10	112.7	↓-2.4
4/20 17:20	110.1	↓-2.6
4/20 17:30	107.3	↓-2.8
4/20 17:40	104.4	↓-2.9
4/20 17:50	101.3	↓-3.1
4/20 18:00	98.0	↓-3.3
4/20 18:10	94.7	↓-3.3
4/20 18:20	91.4	↓-3.3
4/20 18:30	88.1	↓-3.3
4/20 18:40	84.8	↓-3.3
4/20 18:50	81.6	↓-3.2
4/20 19:00	78.6	↓-3.0
4/20 19:10	75.7	↓-2.9
4/20 19:20	73.0	↓-2.7
4/20 19:30	70.6	↓-2.4
4/20 19:40	68.4	↓-2.2
4/20 19:50	66.4	↓-2.0
4/20 20:00	64.8	↓-1.6
4/20 20:10	63.5	↓-1.3
4/20 20:20	62.5	↓-1.0
4/20 20:30	61.7	↓-0.8
4/20 20:40	61.3	↓-0.4
4/20 20:50	61.1	↓-0.2	干潮
4/20 21:00	61.2	↑0.1
4/20 21:10	61.6	↑0.4
4/20 21:20	62.2	↑0.6
4/20 21:30	63.0	↑0.8
4/20 21:40	64.1	↑1.1
4/20 21:50	65.4	↑1.3
4/20 22:00	66.9	↑1.5
4/20 22:10	68.6	↑1.7
4/20 22:20	70.5	↑1.9
4/20 22:30	72.6	↑2.1
4/20 22:40	74.9	↑2.3
4/20 22:50	77.5	↑2.6
4/20 23:00	80.2	↑2.7
4/20 23:10	83.1	↑2.9
4/20 23:20	86.1	↑3.0
4/20 23:30	89.3	↑3.2
4/20 23:40	92.7	↑3.4
4/20 23:50	96.1	↑3.4