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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Thursday 21 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 4PM is: 0.5m 10s primary swell from a East-southeast direction (forecast issued at 08:00am May 21). An open ocean swell of 2.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3.5ft (1.1m) | 7s |
| Afternoon (21 May) | 1.5ft (0.5m) | 10s |
| Evening (21 May) | 1.5ft (0.5m) | 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 32mm), heaviest during Thu morning. Warm (max 22°C on Thu morning, min 14°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the NE by Fri night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 10 | SSE 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | E 5 | E 5 | E 6 | SE 8 | E 8 | SE 8 | SE 8 | E 7 | E 7 | E 8 | E 7 | E 6 | E 6 | ESE 6 | SE 7 | |
103 | 114 | 81 | 54 | 55 | 55 | 55 | 94 | 36 | 50 | 58 | 112 | 3 | 0 | 3 | 2 | 0 | 0 | 0 | 0 | 321 | 266 | 291 | 155 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | |
High Tide | 7:08AM1.44m | 9:27PM1.38m | 7:59AM1.32m | 10:34PM1.36m | 9:10AM1.19m | 11:45PM1.37m | ||||||||||||||||||
Low Tide | 2:22PM0.22m | 3:01AM0.98m | 3:17PM0.34m | 4:32AM0.95m | 4:21PM0.47m | |||||||||||||||||||
 | |  | |  |  | |  | | | |  | |  |  | | | | | | |  | | | |
 | 4:39 | — | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:39 |
 | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:47 | — | — | 6:49 |
3 | 3 | 10 | 7 | — | 1 | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | |
Temp °C | 21 | 22 | 22 | 22 | 21 | 21 | 21 | 18 | 17 | 17 | 19 | 18 | 17 | 15 | 14 | 15 | 15 | 15 | 16 | 18 | 18 | 18 | 18 | 16 |
24 | 23 | 21 | 21 | 20 | 22 | 25 | 18 | 15 | 14 | 16 | 13 | 12 | 9 | 8 | 10 | 10 | 9 | 10 | 13 | 13 | 13 | 14 | 13 | |
Swell 1 Height (m) Direction Period (s) | S 6 | SSE 7 | ESE 10 | ESE 10 | ESE 10 | SW 8 | SW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SW 8 | SW 8 | SW 7 | SSW 7 | SW 7 | SW 7 | SW 7 | SSW 7 | SSW 7 | SW 7 | SE 7 |
 kJ | 68 | 114 | 81 | 54 | 55 | 636 | 490 | 464 | 347 | 287 | 213 | 187 | 129 | 84 | 45 | 26 | 20 | 12 | 8 | 8 | 5 | 5 | 2 | 155 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 9 | — | — | — | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | SE 8 | — | SE 8 | SE 8 | — | — | — | — | — | — | — | SW 7 |
| kJ | 103 | 78 | — | — | — | 55 | 55 | 54 | 36 | 37 | 36 | — | 3 | — | 3 | 2 | — | — | — | — | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 6 | SSW 7 | SW 7 | SW 8 | — | SW 8 | E 10 | E 4 | E 5 | E 5 | E 6 | E 7 | E 8 | E 8 | E 8 | E 7 | E 7 | E 8 | E 7 | E 6 | E 6 | ESE 6 | E 10 |
| kJ | — | 91 | 352 | 640 | 844 | — | 601 | 94 | 26 | 50 | 58 | 112 | 297 | 593 | 558 | 510 | 434 | 496 | 442 | 440 | 321 | 266 | 291 | 363 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 355 | 224 | 103 | 150 | 2 | 2 | 94 | 13 | 13 | 13 | 373 | 334 | 415 | 619 | 664 | 661 | 661 | 747 | 747 | 104 | 619 | 103 | 85 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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