Surf Forecasts:
How big are the waves at Katahama today (21 Oct):
- Morning surf: Morning surf (21 Oct, local time) - 4.5ft (1.3m), 13s period with SSE swell.
- Afternoon surf: Afternoon surf (21 Oct, local time) - 4.5ft (1.3m), 16s period with SSE swell.
- Evening surf: Evening surf (21 Oct, local time) - 7ft (2.1m), 15s period with SSE swell.
The current surf forecast for Katahama at 2AM is: 1.2m 12s primary swell from a Southeast direction and 0.6m 17s secondary swell from a South-southeast direction, 1.0m 5s secondary swell from a South-southwest direction (forecast issued at 08:00pm October 20). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Oct) | 4.5ft (1.3m) | 13s |
| Afternoon (21 Oct) | 4.5ft (1.3m) | 16s |
| Evening (21 Oct) | 7ft (2.1m) | 15s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Warm (max 25°C on Wed morning, min 17°C on Fri morning). Winds decreasing (fresh winds from the SW on Wed afternoon, light winds from the NNE by Thu afternoon). | ||||||||||||||||||
Tue 20 | Wednesday 21 | Thursday 22 | ||||||||||||||||
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 13 | SE 13 | SE 12 | SSE 16 | SSE 13 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 |
Wave Graph  | ||||||||||||||||||
 kJ | 277 | 501 | 509 | 435 | 527 | 489 | 778 | 882 | 1602 | 1776 | 1382 | 1422 | 1668 | 1640 | 1322 | 1266 | 1275 | 1130 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross |
High Tide | 2:04AM1.31m | 3:03PM1.57m | 3:05AM1.40m | 3:30PM1.61m | ||||||||||||||
Low Tide | 8:49PM0.95m | 8:20AM0.67m | 9:26PM0.80m | 9:11AM0.68m | ||||||||||||||
 |  |  | |  | | | | | | | |  |  | | |  |  | |
 | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 5:06 | — | — | — | — | — | — | — | 5:05 | — | — |
mm | — | 1 | 1 | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 24 | 23 | 22 | 20 | 19 | 23 | 23 | 21 | 19 |
Feels °C | 25 | 26 | 27 | 26 | 25 | 25 | 24 | 24 | 24 | 22 | 19 | 17 | 14 | 14 | 19 | 22 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 13 | SE 13 | SE 12 | SE 12 | SSE 13 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 14 |
| kJ | 277 | 501 | 509 | 435 | 325 | 489 | 778 | 882 | 1602 | 1776 | 1382 | 1422 | 1668 | 1640 | 1322 | 1266 | 1275 | 1130 |
Swell 2 Height (m) Direction Period (s) | SSE 14 | SSE 18 | S 18 | SSE 17 | SSE 16 | SSE 16 | SE 12 | SSE 12 | S 20 | S 18 | S 18 | SW 6 | SE 9 | SE 9 | — | W 6 | W 6 | SSW 16 |
| kJ | 165 | 110 | 225 | 286 | 527 | 454 | 319 | 359 | 190 | 758 | 402 | 58 | 41 | 40 | — | 74 | 29 | 454 |
Swell 3 Height (m) Direction Period (s) | SSE 20 | — | SSE 13 | — | — | — | — | — | — | SE 9 | SE 9 | SE 9 | — | — | — | SE 10 | SE 10 | W 5 |
| kJ | 75 | — | 137 | — | — | — | — | — | — | 41 | 41 | 41 | — | — | — | 46 | 45 | 9 |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SW 6 | SW 7 | SW 7 | WSW 6 | WNW 5 | W 6 | W 6 | W 6 | WNW 6 | ESE 10 | E 6 |
| kJ | 65 | 51 | 50 | 54 | 69 | 101 | 176 | 284 | 458 | 385 | 265 | 113 | 158 | 166 | 121 | 161 | 157 | 245 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 103 | 2 | 2 | 355 | 355 | 355 | 355 | 355 | 334 | 351 | 352 | 103 | 178 | 65 | 415 | 6 | 415 | 94 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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