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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Wednesday 29 Apr 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
17.8° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 2PM is: 0.3m 9s primary swell from a East direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 08:00am April 29). An open ocean swell of 1.3m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Apr) | 1ft (0.3m) | 9s |
| Afternoon (29 Apr) | 1ft (0.3m) | 9s |
| Evening (29 Apr) | 1ft (0.3m) | 9s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 44mm), heaviest during Thu night. Warm (max 23°C on Wed morning, min 13°C on Thu afternoon). Mainly strong winds. | ||||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 1 | Sat 2 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 4 | E 6 | S 12 | E 7 | E 7 | E 6 | E 6 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | SE 9 | SE 8 | SE 9 | SE 9 | ESE 9 | |
15 | 15 | 15 | 14 | 14 | 14 | 14 | 33 | 130 | 3 | 308 | 308 | 269 | 252 | 206 | 241 | 278 | 438 | 436 | 502 | 335 | 210 | 110 | 55 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | glassy | cross-off | cross-off | cross-off | cross-off | |
High Tide | 3:39AM1.46m | 4:19PM1.36m | 4:01AM1.49m | 4:54PM1.41m | 4:23AM1.53m | 5:28PM1.44m | ||||||||||||||||||
Low Tide | 10:11AM0.37m | 10:07PM0.60m | 10:37AM0.26m | 10:35PM0.65m | 11:04AM0.16m | 11:01PM0.69m | ||||||||||||||||||
 | | | |  |  | | | | |  | | |  | |  |  |  | | |  |  | |  | |
 | 5:00 | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 |
 | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — | 6:31 |
— | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 4 | 5 | 8 | 12 | 9 | 1 | 1 | 1 | — | — | — | |
Temp °C | 18 | 22 | 23 | 22 | 20 | 17 | 17 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 15 | 14 | 13 | 14 |
15 | 18 | 17 | 15 | 14 | 14 | 15 | 11 | 10 | 10 | 11 | 10 | 8 | 8 | 7 | 9 | 8 | 11 | 14 | 17 | 7 | 5 | 5 | 5 | |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | W 5 | W 5 | SSW 6 | SW 6 | SW 6 | SSW 6 | SW 5 | SW 5 | SW 5 | — | — | SE 8 | ESE 8 | SE 9 | SE 8 | SE 9 | SE 9 | ESE 9 |
 kJ | 15 | 15 | 15 | 14 | 14 | 14 | 28 | 16 | 13 | 9 | 5 | 3 | 1 | 1 | 1 | — | — | 416 | 436 | 502 | 335 | 210 | 110 | 55 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SE 6 | SE 11 | SE 11 | SE 8 | SW 6 | SW 6 | W 5 | W 4 | S 12 | S 13 | — | — | — | — | — | SSW 6 | SSW 7 | SW 8 | — | E 9 | — | ESE 9 |
| kJ | 4 | 3 | 1 | 5 | 5 | 3 | 25 | 15 | 4 | 2 | 3 | 3 | — | — | — | — | — | 45 | 111 | 221 | — | 59 | — | 28 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | S 13 | S 13 | E 11 | E 9 | SE 8 | S 12 | S 12 | S 12 | — | — | — | — | — | — | — | NNE 4 | S 8 | — | — | — | — |
| kJ | 5 | 5 | 5 | 3 | 3 | 2 | 14 | 3 | 3 | 3 | 3 | — | — | — | — | — | — | — | 6 | 190 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | SW 6 | WSW 6 | WSW 6 | WSW 5 | WNW 5 | E 4 | E 6 | E 6 | E 7 | E 7 | E 6 | E 6 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | NE 4 | SW 8 | SW 8 | WSW 9 | WSW 8 | WSW 8 |
| kJ | 132 | 106 | 102 | 100 | 84 | 87 | 78 | 33 | 130 | 219 | 308 | 308 | 269 | 252 | 206 | 241 | 278 | 438 | 15 | 388 | 725 | 1107 | 1163 | 1341 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 103 | 132 | 104 | 104 | 764 | 1025 | 13 | 1025 | 1025 | 1025 | 150 | 150 | 352 | 619 | 619 | 430 | 334 | 85 | 103 | 2 | 127 | 351 | 148 | 103 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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