Surf Forecasts:
How big are the waves at Katahama today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 11ft (3.5m), 12s period with SE swell.
- Evening surf: Evening surf (20 Sep, local time) - 11ft (3.5m), 12s period with SE swell.
The current surf forecast for Katahama at 7PM is: 3.5m 12s primary swell from a Southeast direction and 0.2m 13s secondary swell from a East direction (forecast issued at 02:00pm September 20). An open ocean swell of 1.1m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore and the swell rating is 11.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 11ft (3.5m) | 12s |
| Evening (20 Sep) | 11ft (3.5m) | 12s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 55mm), heaviest during Mon night. Warm (max 29°C on Tue morning, min 23°C on Sun afternoon). Winds decreasing (strong winds from the NNE on Mon afternoon, light winds from the ESE by Tue morning). | ||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SE 13 | SSE 12 | ESE 10 | ESE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3027 | 2943 | 3184 | 3359 | 3914 | 5130 | 6346 | 7111 | 7453 | 8043 | 11200 | 8970 | 1863 | 1306 | 670 | 237 | 184 | 158 | 115 | 109 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-on | cross | cross-on |
High Tide | 2:57PM1.42m | 00:31AM1.31m | 3:33PM1.51m | 2:17AM1.37m | 4:00PM1.58m | |||||||||||||||
Low Tide | 8:29PM1.23m | 8:06AM0.62m | 9:30PM1.10m | 9:08AM0.57m | ||||||||||||||||
 | |  |  |  | | | | | | |  | |  |  | | | |  |  | |
 | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — |
 | — | 5:47 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — |
mm | 3 | 1 | 6 | 3 | 1 | 1 | 4 | 3 | 1 | 4 | 8 | 15 | 4 | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 27 | 29 | 28 | 27 | 25 |
Feels °C | 22 | 21 | 21 | 21 | 21 | 22 | 23 | 23 | 23 | 23 | 22 | 23 | 28 | 25 | 26 | 30 | 33 | 30 | 29 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SE 13 | ESE 10 | ESE 10 | ESE 10 | SSE 9 | SSE 9 | W 6 | W 6 | SSE 8 |
| kJ | 3027 | 2943 | 3184 | 3359 | 3914 | 5130 | 6346 | 7111 | 7453 | 8043 | 11200 | 8970 | 1480 | 1306 | 670 | 237 | 184 | 101 | 62 | 109 |
Swell 2 Height (m) Direction Period (s) | — | S 15 | E 13 | E 13 | E 13 | E 12 | E 12 | — | — | — | — | E 10 | SSE 12 | E 9 | SSE 10 | E 9 | E 9 | SSE 9 | SSE 8 | W 5 |
| kJ | — | 619 | 14 | 13 | 13 | 26 | 44 | — | — | — | — | 1352 | 1863 | 441 | 289 | 168 | 58 | 158 | 115 | 27 |
Swell 3 Height (m) Direction Period (s) | — | E 14 | — | — | — | — | — | — | — | — | — | — | NE 6 | — | — | — | — | E 9 | E 13 | E 13 |
| kJ | — | 4 | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | 27 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | ENE 7 | NNE 5 | NE 6 | NE 5 | NE 5 | NE 6 | NNE 5 | NNE 5 | NE 6 | NE 6 | NE 6 | N 6 | W 6 | W 7 | W 6 | W 6 | W 6 | W 6 | ENE 10 | ENE 4 |
| kJ | 649 | 49 | 80 | 83 | 85 | 101 | 40 | 33 | 241 | 249 | 302 | 193 | 125 | 312 | 272 | 194 | 146 | 247 | 31 | 18 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 415 | 415 | 132 | 415 | 415 | 150 | 150 | 104 | 415 | 373 | 373 | 369 | 2 | 2 | 2 | 2 | 6 | 103 | 13 | 236 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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