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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 pm Wednesday 20 May 2026 JSTForecast update in hr min s Forecast update imminent
Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Katahama sea temperature is
20.0° C
(Which is 1.3°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 11PM is: 0.8m 10s primary swell from a East-southeast direction and 0.4m 6s secondary swell from a South direction (forecast issued at 08:00pm May 20). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | - | - |
| Afternoon (20 May) | - | - |
| Evening (20 May) | 2.5ft (0.8m) | 10s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Thu morning. Warm (max 23°C on Thu morning, min 15°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||||||||
6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | E 5 | ENE 6 | SW 8 | E 7 | E 8 | E 9 | SE 8 | E 7 | E 7 | E 7 | |
122 | 120 | 115 | 103 | 103 | 78 | 80 | 54 | 54 | 55 | 55 | 37 | 89 | 36 | 64 | 80 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 363 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | glassy | glassy | glassy | glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | |
High Tide | 8:30PM1.40m | 7:08AM1.44m | 9:27PM1.38m | 7:59AM1.32m | 10:34PM1.36m | 9:10AM1.19m | ||||||||||||||||||
Low Tide | 1:49AM0.96m | 2:22PM0.22m | 3:01AM0.98m | 3:17PM0.34m | 4:32AM0.95m | |||||||||||||||||||
 |  | | |  |  | |  |  |  |  | | | | | | |  |  | | | | | | |
 | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:39 | — | — | — | — |
 | 6:45 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | 6:47 |
— | 1 | 1 | 1 | 2 | 2 | 3 | 3 | — | 1 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 21 | 21 | 21 | 23 | 22 | 23 | 22 | 22 | 22 | 20 | 17 | 18 | 18 | 19 | 18 | 16 | 15 | 15 | 15 | 16 | 17 | 18 |
23 | 25 | 24 | 24 | 24 | 25 | 21 | 22 | 21 | 23 | 23 | 21 | 15 | 16 | 14 | 15 | 14 | 11 | 10 | 10 | 10 | 11 | 12 | 13 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | S 6 | S 6 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 8 | SW 8 | SSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SW 7 |
 kJ | 122 | 120 | 115 | 103 | 71 | 161 | 80 | 54 | 54 | 55 | 55 | 37 | 575 | 378 | 264 | 236 | 178 | 116 | 57 | 37 | 35 | 20 | 19 | 8 |
Swell 2 Height (m) Direction Period (s) | S 8 | SSW 7 | S 6 | S 6 | ESE 10 | ESE 9 | — | — | — | — | — | — | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | — | — | — | SE 8 | — | — | S 7 |
| kJ | 1 | 9 | 12 | 24 | 103 | 78 | — | — | — | — | — | — | 36 | 36 | 31 | 32 | — | — | — | — | 2 | — | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 4 | — | — | S 6 | S 6 | — | SSW 7 | SSW 7 | SW 8 | SW 8 | SW 8 | SW 8 | E 10 | ENE 4 | E 5 | ENE 6 | ENE 6 | E 7 | E 8 | E 9 | E 6 | E 7 | E 7 | E 7 |
| kJ | 3 | — | — | 66 | 167 | — | 286 | 578 | 631 | 573 | 605 | 735 | 89 | 34 | 64 | 80 | 170 | 397 | 537 | 487 | 328 | 420 | 437 | 363 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 355 | 355 | 6 | 6 | 6 | 6 | 2 | 6 | 127 | 103 | 103 | 150 | 94 | 2 | 94 | 13 | 13 | 13 | 13 | 13 | 13 | 437 | 661 | 661 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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