20 (日)	06:00	00:08	-	13:49
	127cm	97cm	-	25cm
小潮 出 04:46 入 18:22 出 00:39 入 09:07 潮干狩り ○ 12:15～15:39

苫小牧（北海道）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	96.4	↓-0.1	干潮
4/20 00:10	96.3	↓-0.1
4/20 00:20	96.4	↑0.1
4/20 00:30	96.6	↑0.2
4/20 00:40	96.9	↑0.3
4/20 00:50	97.3	↑0.4
4/20 01:00	97.9	↑0.6
4/20 01:10	98.6	↑0.7
4/20 01:20	99.3	↑0.7
4/20 01:30	100.2	↑0.9
4/20 01:40	101.2	↑1.0
4/20 01:50	102.2	↑1.0
4/20 02:00	103.3	↑1.1
4/20 02:10	104.4	↑1.1
4/20 02:20	105.6	↑1.2
4/20 02:30	106.8	↑1.2
4/20 02:40	108.0	↑1.2
4/20 02:50	109.1	↑1.1
4/20 03:00	110.3	↑1.2
4/20 03:10	111.5	↑1.2
4/20 03:20	112.7	↑1.2
4/20 03:30	113.8	↑1.1
4/20 03:40	115.0	↑1.2
4/20 03:50	116.1	↑1.1
4/20 04:00	117.2	↑1.1
4/20 04:10	118.3	↑1.1
4/20 04:20	119.3	↑1.0
4/20 04:30	120.4	↑1.1
4/20 04:40	121.4	↑1.0
4/20 04:50	122.3	↑0.9
4/20 05:00	123.2	↑0.9
4/20 05:10	124.0	↑0.8
4/20 05:20	124.7	↑0.7
4/20 05:30	125.3	↑0.6
4/20 05:40	125.7	↑0.4
4/20 05:50	126.0	↑0.3	満潮
4/20 06:00	126.0	0	満潮
4/20 06:10	125.9	↓-0.1
4/20 06:20	125.5	↓-0.4
4/20 06:30	125.0	↓-0.5
4/20 06:40	124.1	↓-0.9
4/20 06:50	123.0	↓-1.1
4/20 07:00	121.7	↓-1.3
4/20 07:10	120.1	↓-1.6
4/20 07:20	118.2	↓-1.9
4/20 07:30	116.2	↓-2.0
4/20 07:40	113.9	↓-2.3
4/20 07:50	111.4	↓-2.5
4/20 08:00	108.8	↓-2.6
4/20 08:10	106.0	↓-2.8
4/20 08:20	103.1	↓-2.9
4/20 08:30	100.1	↓-3.0
4/20 08:40	97.0	↓-3.1
4/20 08:50	93.9	↓-3.1
4/20 09:00	90.7	↓-3.2
4/20 09:10	87.5	↓-3.2
4/20 09:20	84.3	↓-3.2
4/20 09:30	81.0	↓-3.3	最大潮位差
4/20 09:40	77.8	↓-3.2
4/20 09:50	74.6	↓-3.2
4/20 10:00	71.4	↓-3.2
4/20 10:10	68.2	↓-3.2
4/20 10:20	65.1	↓-3.1
4/20 10:30	62.0	↓-3.1
4/20 10:40	58.9	↓-3.1
4/20 10:50	55.9	↓-3.0
4/20 11:00	52.9	↓-3.0
4/20 11:10	50.0	↓-2.9
4/20 11:20	47.2	↓-2.8
4/20 11:30	44.4	↓-2.8
4/20 11:40	41.8	↓-2.6
4/20 11:50	39.3	↓-2.5
4/20 12:00	37.0	↓-2.3
4/20 12:10	34.8	↓-2.2
4/20 12:20	32.8	↓-2.0
4/20 12:30	31.0	↓-1.8
4/20 12:40	29.4	↓-1.6
4/20 12:50	28.0	↓-1.4
4/20 13:00	26.9	↓-1.1
4/20 13:10	26.0	↓-0.9
4/20 13:20	25.3	↓-0.7
4/20 13:30	24.8	↓-0.5
4/20 13:40	24.5	↓-0.3	干潮
4/20 13:50	24.5	0
4/20 14:00	24.6	↑0.1
4/20 14:10	25.0	↑0.4
4/20 14:20	25.4	↑0.4
4/20 14:30	26.1	↑0.7
4/20 14:40	26.9	↑0.8
4/20 14:50	27.8	↑0.9
4/20 15:00	28.8	↑1.0
4/20 15:10	30.0	↑1.2
4/20 15:20	31.2	↑1.2
4/20 15:30	32.6	↑1.4
4/20 15:40	34.0	↑1.4
4/20 15:50	35.5	↑1.5
4/20 16:00	37.2	↑1.7
4/20 16:10	38.9	↑1.7
4/20 16:20	40.8	↑1.9
4/20 16:30	42.7	↑1.9
4/20 16:40	44.7	↑2.0
4/20 16:50	46.8	↑2.1
4/20 17:00	49.0	↑2.2
4/20 17:10	51.3	↑2.3
4/20 17:20	53.6	↑2.3
4/20 17:30	56.0	↑2.4
4/20 17:40	58.4	↑2.4
4/20 17:50	60.8	↑2.4
4/20 18:00	63.2	↑2.4
4/20 18:10	65.6	↑2.4
4/20 18:20	67.9	↑2.3
4/20 18:30	70.2	↑2.3
4/20 18:40	72.4	↑2.2
4/20 18:50	74.5	↑2.1
4/20 19:00	76.4	↑1.9
4/20 19:10	78.3	↑1.9
4/20 19:20	80.1	↑1.8
4/20 19:30	81.7	↑1.6
4/20 19:40	83.2	↑1.5
4/20 19:50	84.6	↑1.4
4/20 20:00	85.9	↑1.3
4/20 20:10	87.0	↑1.1
4/20 20:20	88.1	↑1.1
4/20 20:30	89.2	↑1.1
4/20 20:40	90.1	↑0.9
4/20 20:50	91.0	↑0.9
4/20 21:00	91.9	↑0.9
4/20 21:10	92.7	↑0.8
4/20 21:20	93.5	↑0.8
4/20 21:30	94.2	↑0.7
4/20 21:40	94.9	↑0.7
4/20 21:50	95.6	↑0.7
4/20 22:00	96.3	↑0.7
4/20 22:10	96.9	↑0.6
4/20 22:20	97.5	↑0.6
4/20 22:30	98.0	↑0.5
4/20 22:40	98.5	↑0.5
4/20 22:50	98.9	↑0.4
4/20 23:00	99.3	↑0.4
4/20 23:10	99.6	↑0.3
4/20 23:20	99.8	↑0.2
4/20 23:30	100.0	↑0.2
4/20 23:40	100.2	↑0.2
4/20 23:50	100.3	↑0.1