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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 pm Sunday 17 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
19.4° 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 11PM is: 0.9m 9s primary swell from a East-southeast direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 08:00pm May 17). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | - | - |
| Afternoon (17 May) | - | - |
| Evening (17 May) | 3ft (0.9m) | 9s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 19mm), heaviest on Wed afternoon. Warm (max 22°C on Mon morning, min 17°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wednesday 20 | |||||||||||||||||||||
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 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | |
92 | 111 | 106 | 137 | 131 | 103 | 103 | 103 | 101 | 80 | 79 | 72 | 80 | 55 | 72 | 73 | 72 | 89 | 112 | 98 | 148 | 145 | 142 | 142 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | glassy | glassy | glassy | on | cross-on | cross-on | cross | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | |
High Tide | 6:21PM1.45m | 5:14AM1.60m | 6:59PM1.44m | 5:47AM1.59m | 7:42PM1.43m | 6:25AM1.53m | ||||||||||||||||||
Low Tide | 11:35PM0.87m | 12:14PM0.05m | 00:11AM0.90m | 12:51PM0.07m | 00:54AM0.93m | 1:34PM0.12m | ||||||||||||||||||
 |  | | | | | | | | | | | |  | | | | |  |  |  | | |  | |
 | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — |
 | 6:44 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | 6:45 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 3 | 8 | |
Temp °C | 22 | 21 | 20 | 20 | 19 | 21 | 22 | 22 | 21 | 21 | 20 | 19 | 18 | 21 | 22 | 22 | 22 | 21 | 20 | 20 | 19 | 18 | 18 | 17 |
21 | 21 | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 21 | 20 | 19 | 18 | 20 | 21 | 20 | 21 | 22 | 21 | 21 | 20 | 20 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | E 8 | E 9 | E 9 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
 kJ | 92 | 111 | 106 | 137 | 131 | 103 | 103 | 103 | 101 | 80 | 79 | 72 | 80 | 52 | 60 | 63 | 72 | 89 | 112 | 98 | 148 | 145 | 142 | 142 |
Swell 2 Height (m) Direction Period (s) | SE 11 | — | SE 12 | SE 12 | SE 7 | SE 7 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | E 9 | E 9 | E 9 | E 10 | S 7 | S 7 | SSW 9 | SSW 8 |
| kJ | 5 | — | 6 | 6 | 2 | 2 | 6 | 5 | 5 | 5 | 17 | 17 | 38 | 55 | 72 | 73 | 59 | 42 | 42 | 54 | 1 | 1 | 8 | 14 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 8 | SE 7 | — | — | SE 12 | — | SE 11 | SE 10 | — | — | — | ESE 10 | — | — | — | — | SSE 3 | SSE 4 | S 9 | S 9 | S 7 | S 4 |
| kJ | — | — | 2 | 2 | — | — | 5 | — | 19 | 16 | — | — | — | 20 | — | — | — | — | 1 | 1 | 2 | 2 | 1 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 3 | SW 3 | SW 3 | WSW 2 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 1 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 94 | 65 | 6 | 6 | 6 | 6 | 6 | 6 | 208 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 211 | 211 | 2 | 6 | 2 | 2 | 2 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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