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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Wednesday 13 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
17.4° C
(Which is 3.1°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: 1.1m 9s primary swell from a East-southeast direction and 0.1m 7s secondary swell from a South direction (forecast issued at 08:00am May 13). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 4ft (1.2m) | 9s |
| Afternoon (13 May) | 4ft (1.2m) | 9s |
| Evening (13 May) | 4.5ft (1.3m) | 9s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 21°C on Wed afternoon, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 6 | E 10 | E 6 | E 6 | E 6 | E 10 | E 6 | |
216 | 216 | 199 | 237 | 248 | 277 | 301 | 307 | 288 | 245 | 240 | 276 | 176 | 254 | 141 | 108 | 110 | 108 | 94 | 119 | 94 | 81 | 64 | 46 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | on | cross-on | cross-on | cross | cross-off | cross-off | off | cross-off | cross-on | on | on | on | cross-on | cross | cross | cross | cross | cross-on | on | on | cross-on | cross-off | cross-off | |
High Tide | 3:55PM1.32m | 3:26AM1.49m | 4:35PM1.38m | 3:51AM1.52m | 5:11PM1.41m | |||||||||||||||||||
Low Tide | 9:42AM0.40m | 9:32PM0.70m | 10:12AM0.29m | 10:06PM0.75m | 10:40AM0.19m | 10:35PM0.80m | ||||||||||||||||||
 |  | | | |  |  |  | | | | | |  | | | | | | | | | | | |
 | 4:46 | — | — | — | — | — | — | 4:45 | — | — | — | — | — | — | — | 4:45 | — | — | — | — | — | — | — | 4:43 |
 | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | 6:43 |
— | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 19 | 20 | 21 | 20 | 17 | 17 | 17 | 17 | 20 | 21 | 21 | 20 | 19 | 18 | 17 | 16 | 18 | 19 | 20 | 19 | 18 | 17 | 17 |
17 | 19 | 18 | 19 | 19 | 15 | 16 | 16 | 16 | 18 | 19 | 19 | 18 | 18 | 17 | 16 | 14 | 15 | 17 | 18 | 16 | 17 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 9 | E 9 | E 9 | E 10 | E 9 |
 kJ | 216 | 216 | 199 | 237 | 248 | 277 | 301 | 307 | 288 | 245 | 240 | 276 | 176 | 254 | 141 | 108 | 110 | 90 | 90 | 87 | 58 | 58 | 64 | 41 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 7 | S 7 | S 7 | S 7 | — | S 7 | S 7 | S 7 | S 7 | — | — | S 7 | SE 12 | SE 12 | SSE 12 | SE 12 | SSE 12 | SE 12 | SSE 11 | SE 11 | ESE 10 | SE 11 | SE 8 |
| kJ | 2 | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | 1 | — | — | 1 | 5 | 5 | 13 | 5 | 14 | 5 | 13 | 19 | 35 | 19 | 17 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | ESE 10 | SE 11 | ESE 9 | SE 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 | 19 | 7 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NE 2 | E 4 | E 5 | ESE 5 | — | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 |
| kJ | — | — | — | — | — | — | — | — | — | 2 | 6 | 20 | 19 | — | 27 | 77 | 88 | 108 | 94 | 119 | 94 | 81 | 46 | 46 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 6 | 104 | 6 | 13 | 2 | 2 | 2 | 2 | 13 | 145 | 13 | 85 | 150 | 150 | 13 | 150 | 150 | 150 | 104 | 104 | 66 | 2 | 13 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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