Surf Forecasts:
How big are the waves at Katahama today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 4.5ft (1.3m), 10s period with E swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 4ft (1.2m), 12s period with E swell.
- Evening surf: Evening surf (11 Aug, local time) - 3.5ft (1.0m), 12s period with E swell.
The current surf forecast for Katahama at 1AM is: 1.4m 11s primary swell from a East direction (forecast issued at 08:00pm August 10). An open ocean swell of 1.0m 11s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 4.5ft (1.3m) | 10s |
| Afternoon (11 Aug) | 4ft (1.2m) | 12s |
| Evening (11 Aug) | 3.5ft (1.0m) | 12s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Warm (max 28°C on Thu afternoon, min 22°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the ENE by Wed morning). | ||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||||
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) | E 12 | E 11 | E 11 | E 11 | E 11 | E 10 | E 11 | E 12 | E 11 | E 12 | E 12 | E 11 | E 11 | ENE 5 | E 6 | E 6 | ESE 6 | E 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 538 | 502 | 459 | 451 | 434 | 361 | 411 | 380 | 308 | 268 | 221 | 118 | 185 | 93 | 256 | 256 | 154 | 66 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | cross | cross-on | cross-on | cross-on | glassy | cross-off | cross-off | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on |
High Tide | 5:12PM1.55m | 3:38AM1.54m | 5:33PM1.60m | 4:20AM1.60m | 5:51PM1.64m | |||||||||||||
Low Tide | 10:43PM1.12m | 10:44AM0.34m | 11:10PM1.03m | 11:15AM0.31m | ||||||||||||||
 |  | | | | |  | |  |  | |  |  | | | | |  | |
 | — | — | — | 5:03 | — | — | — | — | — | — | — | 5:03 | — | — | — | — | — | — |
 | 6:40 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:38 | — |
mm | 2 | 2 | 3 | 4 | 2 | 1 | — | — | — | — | — | 2 | 2 | 1 | 1 | — | — | — |
Temp °C | 26 | 25 | 25 | 23 | 23 | 24 | 25 | 26 | 27 | 26 | 25 | 23 | 22 | 23 | 24 | 25 | 25 | 25 |
Feels °C | 30 | 30 | 29 | 26 | 24 | 26 | 27 | 29 | 30 | 29 | 26 | 22 | 21 | 22 | 21 | 22 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | E 12 | E 11 | E 11 | E 11 | E 11 | E 10 | E 11 | E 12 | E 11 | E 12 | SSW 10 | WSW 5 | SSW 10 | SSW 10 | SSW 11 | SSW 10 | SSW 10 | SSW 10 |
| kJ | 538 | 502 | 459 | 451 | 434 | 361 | 411 | 380 | 308 | 268 | 184 | 58 | 184 | 202 | 164 | 220 | 216 | 212 |
Swell 2 Height (m) Direction Period (s) | SW 11 | SSW 10 | SW 11 | SW 11 | SSW 10 | SSW 11 | SSW 11 | SSW 10 | SE 13 | SSW 10 | E 12 | SSW 10 | SW 11 | SW 11 | SW 10 | SE 13 | SE 13 | S 6 |
| kJ | 297 | 176 | 216 | 220 | 191 | 202 | 198 | 187 | 7 | 187 | 221 | 176 | 119 | 76 | 82 | 6 | 6 | 41 |
Swell 3 Height (m) Direction Period (s) | S 10 | SW 11 | SSW 10 | SSW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SE 13 | SSE 13 | SW 11 | E 11 | WSW 5 | SE 13 | SE 13 | SE 13 | SE 13 | E 10 |
| kJ | 133 | 233 | 184 | 198 | 168 | 162 | 159 | 165 | 7 | 16 | 114 | 118 | 12 | 7 | 7 | 7 | 6 | 66 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 11 | SW 10 | WSW 5 | WSW 6 | — | E 11 | ENE 5 | E 6 | E 6 | ESE 6 | E 5 |
| kJ | — | — | — | — | — | — | — | 249 | 603 | 133 | 126 | — | 185 | 93 | 256 | 256 | 154 | 52 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 104 | 2 | 2 | 103 | 104 | 65 | 65 | 2 | 2 | 2 | 13 | 94 | 211 | 103 | 103 | 103 | 103 | 103 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
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