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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Thursday 30 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
17.9° C
(Which is 1.7°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 12PM is: 1.8m 7s primary swell from a East direction and 0.1m 12s secondary swell from a South direction (forecast issued at 08:00am April 30). An open ocean swell of 0.3m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 5.5ft (1.7m) | 6s |
| Afternoon (30 Apr) | 6.5ft (2.0m) | 7s |
| Evening (30 Apr) | 5.5ft (1.7m) | 6s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 46mm), heaviest during Fri morning. Warm (max 22°C on Sat morning, min 13°C on Thu morning). Winds decreasing (fresh winds from the W on Fri afternoon, calm by Sat night). | ||||||||||||||||||||||||
Thursday 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 5 | E 6 | E 7 | E 7 | E 6 | E 6 | ESE 6 | ESE 7 | ESE 8 | ESE 8 | SE 8 | ESE 8 | SE 8 | SE 9 | SE 9 | ESE 9 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | |
83 | 225 | 285 | 342 | 300 | 228 | 209 | 282 | 575 | 452 | 157 | 230 | 232 | 152 | 112 | 54 | 35 | 25 | 16 | 25 | 26 | 47 | 47 | 47 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | glassy | |
High Tide | 4:01AM1.49m | 4:54PM1.41m | 4:23AM1.53m | 5:28PM1.44m | 4:47AM1.57m | 6:03PM1.45m | ||||||||||||||||||
Low Tide | 10:37AM0.26m | 10:35PM0.65m | 11:04AM0.16m | 11:01PM0.69m | 11:32AM0.09m | 11:28PM0.74m | ||||||||||||||||||
 | |  | | |  | | |  |  | | |  |  |  | | | | | |  |  | | | |
 | 4:58 | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:54 |
 | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:31 | — | — | 6:31 |
— | — | 3 | 2 | — | 6 | 9 | 6 | 7 | 11 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 16 | 17 | 17 | 15 | 14 | 13 | 14 | 18 | 22 | 22 | 22 | 19 | 18 | 18 |
13 | 11 | 11 | 9 | 8 | 7 | 8 | 8 | 10 | 12 | 16 | 18 | 11 | 8 | 7 | 6 | 8 | 14 | 20 | 20 | 20 | 17 | 16 | 17 | |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 6 | SW 6 | SSW 6 | SW 5 | SW 5 | — | — | ESE 8 | ESE 8 | SSW 9 | ESE 8 | SE 8 | SE 9 | SE 9 | ESE 9 | SE 10 | SE 10 | SE 10 | E 9 | ESE 9 | SW 8 | WSW 5 | SW 7 |
 kJ | 16 | 9 | 5 | 3 | 1 | 1 | — | — | 575 | 452 | 1233 | 230 | 232 | 152 | 112 | 54 | 35 | 25 | 16 | 15 | 26 | 80 | 56 | 96 |
Swell 2 Height (m) Direction Period (s) | W 4 | — | S 12 | — | S 12 | — | — | — | — | SSW 8 | SE 8 | — | — | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SE 10 | ESE 11 | ESE 9 | SW 8 | ESE 9 |
| kJ | 4 | — | 3 | — | 3 | — | — | — | — | 331 | 157 | — | — | 55 | 40 | 26 | 15 | 15 | 14 | 25 | 11 | 47 | 49 | 47 |
Swell 3 Height (m) Direction Period (s) | SE 8 | S 12 | — | — | — | — | — | — | — | — | E 8 | — | — | — | — | — | — | — | — | — | — | — | ESE 9 | NW 4 |
| kJ | 3 | 3 | — | — | — | — | — | — | — | — | 116 | — | — | — | — | — | — | — | — | — | — | — | 47 | 6 |
Wind waves Height (m) Direction Period (s) | E 5 | E 6 | E 7 | E 7 | E 6 | E 6 | ESE 6 | ESE 7 | — | SSW 7 | — | SSW 9 | SW 9 | SW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 7 | WSW 6 | WSW 6 | WSW 6 | NW 4 | — |
| kJ | 83 | 225 | 285 | 342 | 300 | 228 | 209 | 282 | — | 440 | — | 1272 | 1124 | 1355 | 1581 | 1742 | 1564 | 1232 | 737 | 371 | 229 | 119 | 16 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1025 | 236 | 150 | 150 | 747 | 658 | 619 | 103 | 355 | 85 | 85 | 2 | 351 | 351 | 127 | 127 | 103 | 2 | 2 | 2 | 2 | 2 | 2 | 13 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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