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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 pm Monday 18 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
19.6° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 5AM is: 0.7m 9s primary swell from a East-southeast direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 08:00pm May 18). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 1.5ft (0.5m) | 11s |
| Afternoon (19 May) | 2ft (0.6m) | 11s |
| Evening (19 May) | 2ft (0.6m) | 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 67mm), heaviest during Thu afternoon. Warm (max 22°C on Tue morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 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 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | |
101 | 80 | 86 | 72 | 80 | 55 | 73 | 73 | 72 | 69 | 112 | 98 | 148 | 145 | 163 | 163 | 122 | 120 | 115 | 115 | 100 | 80 | 80 | 81 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross | glassy | glassy | glassy | cross | cross | cross-off | glassy | |
High Tide | 6:59PM1.44m | 5:47AM1.59m | 7:42PM1.43m | 6:25AM1.53m | 8:30PM1.40m | 7:08AM1.44m | ||||||||||||||||||
Low Tide | 00:11AM0.90m | 12:51PM0.07m | 00:54AM0.93m | 1:34PM0.12m | 1:49AM0.96m | 2:22PM0.22m | ||||||||||||||||||
 |  | | | | |  | | | | | | | |  | |  |  |  | | | |  | | |
 | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:39 | — | — | — | — |
 | 6:44 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | 6:46 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 7 | 3 | 2 | 2 | 11 | 20 | |
Temp °C | 22 | 21 | 20 | 19 | 19 | 21 | 22 | 22 | 22 | 21 | 20 | 19 | 19 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 21 | 19 |
21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 22 | 22 | 21 | 20 | 20 | 23 | 21 | 22 | 23 | 25 | 23 | 23 | 22 | 20 | 23 | 21 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | E 8 | E 9 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | S 6 | SSW 6 | SSW 7 | SSW 7 |
 kJ | 101 | 80 | 86 | 72 | 80 | 37 | 60 | 73 | 72 | 69 | 112 | 98 | 148 | 145 | 163 | 163 | 122 | 120 | 115 | 115 | 71 | 177 | 241 | 286 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | E 9 | E 9 | E 9 | E 9 | E 10 | S 7 | S 7 | S 7 | S 7 | SSW 7 | S 7 | S 7 | S 5 | SW 6 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 5 | 10 | 17 | 17 | 39 | 55 | 73 | 63 | 41 | 42 | 42 | 54 | 1 | 1 | 1 | 4 | 9 | 8 | 14 | 16 | 54 | 80 | 80 | 81 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 10 | — | — | — | ESE 10 | — | — | — | — | — | — | S 8 | S 8 | S 8 | S 7 | S 7 | — | S 6 | S 7 | ESE 9 | — | — | — |
| kJ | 19 | 16 | — | — | — | 20 | — | — | — | — | — | — | 1 | 1 | 1 | 4 | 1 | — | 3 | 4 | 100 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SW 2 | SW 3 | SW 3 | SW 3 | SW 3 | — | — | — | — | WSW 3 | — | SSW 7 | S 4 | SSW 5 | SSW 6 | SSW 6 | — | — |
| kJ | — | — | — | — | — | — | 1 | 2 | 2 | 2 | 1 | — | — | — | — | 1 | — | 15 | 7 | 102 | 207 | 239 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 6 | 6 | 6 | 6 | 6 | 382 | 382 | 65 | 2 | 2 | 2 | 2 | 6 | 236 | 2 | 6 | 6 | 6 | 6 | 13 | 13 | 2 | 2 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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