Surf Forecasts:
How big are the waves at Katahama today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 10ft (3.0m), 12s period with SE swell.
- 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 1PM is: 3.0m 12s primary swell from a Southeast direction (forecast issued at 08:00am September 20). An open ocean swell of 0.8m 5s 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) | 10ft (3.0m) | 12s |
| 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 87mm), heaviest during Mon night. Warm (max 30°C on Tue morning, min 23°C on Sun morning). Winds decreasing (strong winds from the NE on Mon afternoon, calm by Tue afternoon). | ||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 13 | SE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 14 | SE 14 | SSE 12 | ESE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 8 | S 8 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 2640 | 2831 | 2710 | 3102 | 3060 | 3129 | 3867 | 5117 | 6268 | 6245 | 8582 | 11622 | 17878 | 15970 | 1837 | 1193 | 288 | 307 | 254 | 189 | 140 | 130 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross |
High Tide | 2:57PM1.42m | 00:31AM1.31m | 3:33PM1.51m | 2:17AM1.37m | 4:00PM1.58m | |||||||||||||||||
Low Tide | 6:32AM0.65m | 8:29PM1.23m | 8:06AM0.62m | 9:30PM1.10m | 9:08AM0.57m | |||||||||||||||||
 | | | |  |  | |  |  | | |  |  | | | |  | | |  |  | | |
 | 5:31 | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — |
 | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — |
mm | 2 | 5 | 2 | 2 | 6 | 2 | 1 | 1 | 2 | 2 | 2 | 11 | 16 | 24 | 9 | 1 | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 25 | 24 | 24 | 27 | 30 | 30 | 27 | 26 |
Feels °C | 22 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 21 | 21 | 25 | 23 | 24 | 29 | 33 | 34 | 30 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 13 | SE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 14 | SE 14 | SSE 12 | ESE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 8 | S 8 |
| kJ | 2640 | 2831 | 2710 | 3102 | 3060 | 3129 | 3867 | 5117 | 6268 | 6245 | 8582 | 11622 | 17878 | 15970 | 1837 | 1193 | 288 | 307 | 254 | 189 | 140 | 130 |
Swell 2 Height (m) Direction Period (s) | — | — | — | S 15 | E 13 | E 13 | E 13 | — | — | — | — | — | — | E 11 | E 10 | SSE 10 | E 10 | E 10 | E 9 | E 10 | W 6 | W 5 |
| kJ | — | — | — | 619 | 14 | 13 | 13 | — | — | — | — | — | — | 3712 | 849 | 300 | 279 | 47 | 16 | 8 | 62 | 26 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 14 | — | — | — | — | — | — | — | — | — | SE 11 | ESE 11 | N 6 | — | ESE 12 | — | E 10 | E 13 | E 10 |
| kJ | — | — | — | 4 | — | — | — | — | — | — | — | — | — | 808 | 955 | 12 | — | 15 | — | 8 | 3 | 8 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | NNE 5 | NNE 5 | NE 5 | NE 5 | NNE 5 | NNE 6 | NNE 12 | ENE 6 | NE 6 | NNE 6 | ENE 7 | NNE 7 | W 7 | W 7 | W 7 | W 7 | W 6 | W 6 | ENE 9 | E 4 |
| kJ | 350 | 512 | 34 | 32 | 87 | 87 | 56 | 81 | 184 | 295 | 143 | 156 | 1126 | 448 | 570 | 639 | 498 | 321 | 235 | 167 | 29 | 13 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 132 | 415 | 415 | 132 | 415 | 415 | 430 | 150 | 150 | 430 | 1096 | 397 | 373 | 352 | 351 | 103 | 65 | 2 | 2 | 2 | 13 | 132 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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