Hydrographic and Oceanographic Department
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Yokosuka
Realtime tidal data at Yokosuka
About gauge and tidal data
Latitude: 35°17′N Longitude: 139°39′E Datum level: 110cm below mean sea level Obs. : tide observation by every 5 minutes Pred.: tide prediction by every 5 minutes Obs.-Pred. : difference between observation and prediction
Tidal curve【 2025/01/19 】
Hourly prediction
Unit：cm
Tidal harmonic constants
| month day | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 0119 | 53 | 37 | 34 | 45 | 69 | 98 | 127 | 147 | 155 | 151 | 136 | 116 | 96 | 82 | 76 | 80 | 93 | 111 | 127 | 138 | 139 | 131 | 115 | 94 |
Observation data
Record of TidalHeight(cm) Location Yokosuka Longitude 139-39 Latitude 35-17 TimeZone -09 00(JST) TidalHeightDatum 110cm below mean sea level. a note: Broken or No transmit data ---> "9999" year date time cm 2025 01 19 00 00 532025 01 19 00 05 512025 01 19 00 10 502025 01 19 00 15 492025 01 19 00 20 472025 01 19 00 25 452025 01 19 00 30 432025 01 19 00 35 422025 01 19 00 40 412025 01 19 00 45 402025 01 19 00 50 392025 01 19 00 55 382025 01 19 01 00 382025 01 19 01 05 372025 01 19 01 10 372025 01 19 01 15 362025 01 19 01 20 342025 01 19 01 25 332025 01 19 01 30 332025 01 19 01 35 332025 01 19 01 40 332025 01 19 01 45 322025 01 19 01 50 322025 01 19 01 55 332025 01 19 02 00 342025 01 19 02 05 342025 01 19 02 10 342025 01 19 02 15 342025 01 19 02 20 352025 01 19 02 25 362025 01 19 02 30 372025 01 19 02 35 382025 01 19 02 40 392025 01 19 02 45 412025 01 19 02 50 432025 01 19 02 55 452025 01 19 03 00 462025 01 19 03 05 472025 01 19 03 10 482025 01 19 03 15 502025 01 19 03 20 522025 01 19 03 25 532025 01 19 03 30 552025 01 19 03 35 562025 01 19 03 40 592025 01 19 03 45 612025 01 19 03 50 642025 01 19 03 55 662025 01 19 04 00 692025 01 19 04 05 722025 01 19 04 10 752025 01 19 04 15 772025 01 19 04 20 802025 01 19 04 25 832025 01 19 04 30 852025 01 19 04 35 882025 01 19 04 40 902025 01 19 04 45 932025 01 19 04 50 952025 01 19 04 55 982025 01 19 05 00 1002025 01 19 05 05 1032025 01 19 05 10 1052025 01 19 05 15 1082025 01 19 05 20 1102025 01 19 05 25 1122025 01 19 05 30 1142025 01 19 05 35 1172025 01 19 05 40 1202025 01 19 05 45 1212025 01 19 05 50 1232025 01 19 05 55 1262025 01 19 06 00 1302025 01 19 06 05 1322025 01 19 06 10 1342025 01 19 06 15 1352025 01 19 06 20 1382025 01 19 06 25 1402025 01 19 06 30 1412025 01 19 06 35 1422025 01 19 06 40 1442025 01 19 06 45 1462025 01 19 06 50 1482025 01 19 06 55 1492025 01 19 07 00 1502025 01 19 07 05 1512025 01 19 07 10 1522025 01 19 07 15 1542025 01 19 07 20 1532025 01 19 07 25 1542025 01 19 07 30 1542025 01 19 07 35 1552025 01 19 07 40 1562025 01 19 07 45 1572025 01 19 07 50 1572025 01 19 07 55 1572025 01 19 08 00 1582025 01 19 08 05 1592025 01 19 08 10 1592025 01 19 08 15 1592025 01 19 08 20 1582025 01 19 08 25 1582025 01 19 08 30 1592025 01 19 08 35 1582025 01 19 08 40 1572025 01 19 08 45 1572025 01 19 08 50 1572025 01 19 08 55 1572025 01 19 09 00 1562025 01 19 09 05 1552025 01 19 09 10 1532025 01 19 09 15 1512025 01 19 09 20 1522025 01 19 09 25 1512025 01 19 09 30 1492025 01 19 09 35 1472025 01 19 09 40 1462025 01 19 09 45 1462025 01 19 09 50 1452025 01 19 09 55 1432025 01 19 10 00 1412025 01 19 10 05 1402025 01 19 10 10 1392025 01 19 10 15 1382025 01 19 10 20 1362025 01 19 10 25 1342025 01 19 10 30 1332025 01 19 10 35 1342025 01 19 10 40 1312025 01 19 10 45 1282025 01 19 10 50 1262025 01 19 10 55 1262025 01 19 11 00 1252025 01 19 11 05 1232025 01 19 11 10 1202025 01 19 11 15 1182025 01 19 11 20 1182025 01 19 11 25 1162025 01 19 11 30 1132025 01 19 11 35 1112025 01 19 11 40 1102025 01 19 11 45 1082025 01 19 11 50 1062025 01 19 11 55 1042025 01 19 12 00 1022025 01 19 12 05 1032025 01 19 12 10 1032025 01 19 12 15 1012025 01 19 12 20 982025 01 19 12 25 972025 01 19 12 30 962025 01 19 12 35 962025 01 19 12 40 932025 01 19 12 45 902025 01 19 12 50 892025 01 19 12 55 902025 01 19 13 00 902025 01 19 13 05 882025 01 19 13 10 862025 01 19 13 15 852025 01 19 13 20 862025 01 19 13 25 852025 01 19 13 30 832025 01 19 13 35 832025 01 19 13 40 832025 01 19 13 45 842025 01 19 13 50 832025 01 19 13 55 822025 01 19 14 00 812025 01 19 14 05 822025 01 19 14 10 832025 01 19 14 15 842025 01 19 14 20 832025 01 19 14 25 832025 01 19 14 30 842025 01 19 14 35 852025 01 19 14 40 852025 01 19 14 45 99992025 01 19 14 50 99992025 01 19 14 55 99992025 01 19 15 00 99992025 01 19 15 05 99992025 01 19 15 10 99992025 01 19 15 15 99992025 01 19 15 20 99992025 01 19 15 25 99992025 01 19 15 30 99992025 01 19 15 35 99992025 01 19 15 40 99992025 01 19 15 45 99992025 01 19 15 50 99992025 01 19 15 55 99992025 01 19 16 00 99992025 01 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