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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 2 am Thursday 23 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
17.5° 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 8AM is: 0.9m 7s primary swell from a East-southeast direction and 0.4m 10s secondary swell from a East direction (forecast issued at 02:00am April 23). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | 3ft (0.9m) | 7s |
| Afternoon (23 Apr) | 2.5ft (0.8m) | 7s |
| Evening (23 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 49mm), heaviest during Thu night. Very mild (max 17°C on Thu morning, min 13°C on Thu afternoon). Winds decreasing (fresh winds from the NE on Thu night, calm by Fri morning). | ||||||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 7 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | E 5 | ENE 6 | E 6 | E 10 | E 9 | E 7 | E 7 | S 9 | E 8 | S 8 | E 6 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | ESE 6 | |
93 | 81 | 88 | 76 | 57 | 65 | 81 | 188 | 126 | 16 | 16 | 56 | 73 | 76 | 80 | 46 | 40 | 34 | 74 | 143 | 134 | 151 | 132 | 97 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | glassy | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 9:47PM1.22m | 8:04AM1.29m | 11:33PM1.20m | 9:07AM1.15m | 1:12AM1.25m | 11:36AM1.05m | ||||||||||||||||||
Low Tide | 2:48AM0.97m | 3:46PM0.34m | 4:48AM1.02m | 5:10PM0.44m | 7:14AM0.94m | 6:41PM0.49m | ||||||||||||||||||
 | |  | |  | |  |  |  | | | | | | | | | | |  | | | |  | |
 | — | 5:05 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 5:03 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:25 | — |
— | — | — | — | 4 | 4 | 16 | 18 | 5 | — | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | |
Temp °C | 18 | 17 | 17 | 17 | 14 | 13 | 14 | 14 | 14 | 14 | 13 | 14 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 15 | 15 | 16 | 16 | 15 |
18 | 17 | 17 | 16 | 12 | 10 | 8 | 7 | 11 | 13 | 12 | 13 | 15 | 15 | 15 | 15 | 14 | 13 | 11 | 12 | 11 | 12 | 12 | 12 | |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | E 10 | SE 12 | SE 12 | E 6 | E 6 | SSW 8 | SSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 8 | SSW 8 | SW 8 | SSW 8 | SSW 8 | SW 7 | SSW 7 | SSW 7 |
 kJ | 93 | 81 | 88 | 76 | 57 | 28 | 24 | 23 | 126 | 135 | 202 | 230 | 176 | 176 | 162 | 118 | 143 | 103 | 53 | 52 | 22 | 14 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | ESE 10 | E 10 | E 10 | SE 12 | — | SE 12 | E 10 | SSW 8 | E 6 | E 7 | E 7 | E 7 | E 7 | S 8 | E 8 | E 8 | S 7 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 |
| kJ | 70 | 70 | 33 | 31 | 31 | 24 | — | 23 | 17 | 81 | 68 | 56 | 73 | 58 | 32 | 46 | 12 | 12 | 15 | 5 | 5 | 5 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SSW 4 | — | — | SE 12 | E 10 | E 9 | E 9 | S 9 | S 9 | S 8 | E 8 | ESE 12 | ESE 12 | SE 12 | — | — | SE 14 | SE 14 | SW 8 |
| kJ | 27 | 26 | 26 | 26 | 25 | 1 | — | — | 22 | 16 | 16 | 24 | 54 | 76 | 46 | 22 | 14 | 14 | 5 | — | — | 8 | 8 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | ESE 7 | E 5 | ENE 6 | NNE 5 | N 4 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 8 | E 6 | E 6 | E 5 | E 5 | E 6 | E 6 | E 6 | E 6 | ESE 6 |
| kJ | — | — | — | — | — | 65 | 81 | 188 | 44 | 2 | 241 | 230 | 187 | 138 | 80 | 41 | 40 | 34 | 74 | 143 | 134 | 151 | 132 | 97 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 6 | 6 | 13 | 13 | 13 | 150 | 94 | 94 | 13 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 13 | 351 | 334 | 355 | 674 | 211 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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