Surf Forecasts:
How big are the waves at Katahama today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 2ft (0.6m), 13s period with SSE swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 3.5ft (1.0m), 12s period with SE swell.
- Evening surf: Evening surf (20 Oct, local time) - 4ft (1.2m), 13s period with SE swell.
The current surf forecast for Katahama at 9AM is: 0.6m 13s primary swell from a South-southeast direction and 0.9m 8s secondary swell from a Southeast direction, 0.8m 5s secondary swell from a South-southwest direction (forecast issued at 02:00am October 20). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 2ft (0.6m) | 13s |
| Afternoon (20 Oct) | 3.5ft (1.0m) | 12s |
| Evening (20 Oct) | 4ft (1.2m) | 13s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Tue morning. Warm (max 26°C on Tue morning, min 17°C on Thu night). Winds increasing (light winds from the WSW on Tue night, fresh winds from the WSW by Wed afternoon). | ||||||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | SSE 13 | SE 13 | SE 12 | 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 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 168 | 136 | 135 | 118 | 325 | 277 | 319 | 501 | 509 | 435 | 527 | 489 | 768 | 882 | 1602 | 1776 | 1382 | 1594 | 1668 | 1617 | 1324 | 1275 | 1016 | 961 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on |
High Tide | 00:16AM1.24m | 2:30PM1.51m | 2:04AM1.31m | 3:03PM1.57m | 3:05AM1.40m | 3:30PM1.61m | ||||||||||||||||||
Low Tide | 7:11AM0.67m | 8:49PM0.95m | 8:20AM0.67m | 9:26PM0.80m | 9:11AM0.68m | |||||||||||||||||||
 |  |  |  | | | |  | |  | | | | | | | | |  |  | |  | | | |
 | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:06 | — | — | — | — | — | — | — | 5:05 | — | — |
mm | — | — | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 24 | 26 | 26 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 22 | 20 | 19 | 22 | 22 | 21 | 19 |
Feels °C | 24 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 25 | 25 | 25 | 24 | 24 | 23 | 24 | 22 | 19 | 16 | 14 | 14 | 19 | 20 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | SE 8 | SE 13 | SE 12 | 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 13 |
| kJ | 168 | 136 | 135 | 105 | 325 | 277 | 319 | 501 | 509 | 435 | 325 | 489 | 768 | 882 | 1602 | 1776 | 1382 | 1594 | 1668 | 1617 | 1324 | 1275 | 1016 | 961 |
Swell 2 Height (m) Direction Period (s) | SE 15 | SE 15 | SSE 13 | SSE 13 | SSE 16 | SSE 15 | SSE 14 | SSE 18 | S 18 | SSE 17 | SSE 16 | SSE 16 | SE 12 | SSE 12 | S 20 | SSW 7 | S 18 | SE 9 | SW 6 | SE 9 | SE 9 | W 6 | SSW 17 | SSW 16 |
| kJ | 56 | 54 | 70 | 118 | 144 | 188 | 165 | 110 | 225 | 286 | 527 | 454 | 319 | 451 | 190 | 212 | 407 | 41 | 58 | 38 | 42 | 61 | 372 | 454 |
Swell 3 Height (m) Direction Period (s) | E 9 | SSE 18 | SSE 18 | SSE 16 | S 22 | S 19 | SSE 20 | — | SSE 13 | — | — | — | — | — | — | SE 9 | SE 9 | SE 9 | SE 9 | — | — | SE 10 | W 5 | W 5 |
| kJ | 2 | 32 | 61 | 107 | 9 | 29 | 75 | — | 137 | — | — | — | — | — | — | 41 | 41 | 41 | 41 | — | — | 46 | 27 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SW 6 | SW 7 | WSW 7 | SW 7 | WSW 6 | WNW 5 | W 6 | W 6 | — | ESE 4 | E 6 |
| kJ | — | — | — | 35 | 64 | 86 | 75 | 53 | 51 | 49 | 45 | 69 | 170 | 356 | 572 | 294 | 263 | 212 | 117 | 184 | 121 | — | 28 | 312 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 2 | 2 | 2 | 355 | 94 | 103 | 2 | 2 | 2 | 2 | 355 | 355 | 355 | 334 | 351 | 352 | 103 | 150 | 65 | 2 | 13 | 236 | 94 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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