Hydrographic and Oceanographic Department
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Miyakejima
Realtime tidal data at Miyakejima
About gauge and tidal data
Latitude: 34°04′N Longitude: 139°29′E Datum level: 91cm 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【 2025/12/16 】
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 |
| 1216 | 75 | 91 | 104 | 111 | 112 | 107 | 100 | 94 | 91 | 92 | 98 | 107 | 117 | 125 | 127 | 123 | 111 | 93 | 72 | 52 | 37 | 29 | 31 | 42 |
Observation data
Record of TidalHeight(cm) Location Miyakejima Longitude 139-29 Latitude 34-04 TimeZone -09 00(JST) TidalHeightDatum 91cm below mean sea level. a note: Broken or No transmit data ---> "9999" year date time cm 2025 12 16 00 00 532025 12 16 00 05 542025 12 16 00 10 542025 12 16 00 15 582025 12 16 00 20 582025 12 16 00 25 582025 12 16 00 30 622025 12 16 00 35 622025 12 16 00 40 632025 12 16 00 45 652025 12 16 00 50 652025 12 16 00 55 692025 12 16 01 00 692025 12 16 01 05 702025 12 16 01 10 692025 12 16 01 15 742025 12 16 01 20 742025 12 16 01 25 762025 12 16 01 30 762025 12 16 01 35 742025 12 16 01 40 812025 12 16 01 45 812025 12 16 01 50 792025 12 16 01 55 842025 12 16 02 00 862025 12 16 02 05 862025 12 16 02 10 852025 12 16 02 15 862025 12 16 02 20 882025 12 16 02 25 892025 12 16 02 30 862025 12 16 02 35 902025 12 16 02 40 902025 12 16 02 45 892025 12 16 02 50 892025 12 16 02 55 902025 12 16 03 00 932025 12 16 03 05 922025 12 16 03 10 932025 12 16 03 15 932025 12 16 03 20 922025 12 16 03 25 932025 12 16 03 30 912025 12 16 03 35 932025 12 16 03 40 932025 12 16 03 45 912025 12 16 03 50 902025 12 16 03 55 892025 12 16 04 00 912025 12 16 04 05 892025 12 16 04 10 912025 12 16 04 15 902025 12 16 04 20 902025 12 16 04 25 892025 12 16 04 30 882025 12 16 04 35 872025 12 16 04 40 872025 12 16 04 45 862025 12 16 04 50 872025 12 16 04 55 852025 12 16 05 00 852025 12 16 05 05 872025 12 16 05 10 842025 12 16 05 15 842025 12 16 05 20 802025 12 16 05 25 832025 12 16 05 30 822025 12 16 05 35 792025 12 16 05 40 822025 12 16 05 45 812025 12 16 05 50 782025 12 16 05 55 762025 12 16 06 00 762025 12 16 06 05 762025 12 16 06 10 732025 12 16 06 15 762025 12 16 06 20 762025 12 16 06 25 742025 12 16 06 30 732025 12 16 06 35 99992025 12 16 06 40 99992025 12 16 06 45 99992025 12 16 06 50 99992025 12 16 06 55 99992025 12 16 07 00 99992025 12 16 07 05 99992025 12 16 07 10 99992025 12 16 07 15 99992025 12 16 07 20 99992025 12 16 07 25 99992025 12 16 07 30 99992025 12 16 07 35 99992025 12 16 07 40 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