Surf Forecasts:
How big are the waves at Katahama today (21 Sep):
- Afternoon surf: Afternoon surf (21 Sep, local time) - 16ft (5.0m), 13s period with SSE swell.
- Evening surf: Evening surf (21 Sep, local time) - 7ft (2.1m), 12s period with SSE swell.
The current surf forecast for Katahama at 10PM is: 2.1m 12s primary swell from a South-southeast direction and 1.8m 10s secondary swell from a East direction (forecast issued at 02:00pm September 21). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 4.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | - | - |
| Afternoon (21 Sep) | 16ft (5.0m) | 13s |
| Evening (21 Sep) | 7ft (2.1m) | 12s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 28°C on Tue morning, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Mon 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||||||
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) | SSE 13 | SSE 13 | SE 12 | SSE 12 | ESE 10 | ESE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | S 7 | E 4 | ENE 5 | E 6 | E 6 | E 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 8160 | 7641 | 5639 | 1185 | 804 | 511 | 173 | 168 | 116 | 108 | 76 | 62 | 58 | 57 | 37 | 34 | 91 | 103 | 106 | 89 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | off | off | glassy | on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:33PM1.51m | 2:17AM1.37m | 4:00PM1.58m | 3:16AM1.47m | 4:22PM1.63m | |||||||||||||||
Low Tide | 9:30PM1.10m | 9:08AM0.57m | 10:02PM0.97m | 9:51AM0.54m | ||||||||||||||||
 |  |  |  | | |  | | |  | | |  | | | | | | | | |
 | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — |
 | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:44 | — | — |
mm | 17 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 27 | 26 | 26 | 25 | 24 | 24 | 27 | 28 | 27 | 26 | 26 | 23 | 24 | 23 | 23 | 24 | 24 | 23 | 23 |
Feels °C | 22 | 29 | 28 | 30 | 28 | 26 | 26 | 30 | 31 | 28 | 28 | 28 | 22 | 23 | 21 | 20 | 21 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SSE 13 | SSE 13 | SE 12 | SSE 12 | ESE 10 | ESE 10 | SSE 9 | W 6 | W 6 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | S 7 | S 7 | SSE 7 | SSE 7 | SSE 6 | SSE 6 |
| kJ | 8160 | 7641 | 5639 | 1185 | 804 | 511 | 161 | 86 | 64 | 108 | 76 | 62 | 58 | 57 | 37 | 24 | 15 | 9 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | NNE 6 | E 10 | WSW 7 | SSE 9 | E 9 | SSE 9 | SSE 9 | W 6 | W 5 | W 4 | W 4 | E 9 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | — | — | 50 | 640 | 175 | 201 | 173 | 168 | 116 | 39 | 17 | 6 | 1 | 7 | 6 | 7 | 7 | 6 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 11 | — | — | — | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | S 8 | SE 9 | SE 9 | SE 9 | SE 9 | E 10 | E 10 |
| kJ | — | — | — | 293 | — | — | — | 58 | 27 | 15 | 7 | 7 | 7 | 6 | 3 | 3 | 3 | 3 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | W 6 | W 6 | — | W 6 | W 6 | W 6 | WNW 6 | W 6 | E 3 | E 4 | E 4 | E 3 | E 4 | E 4 | ENE 5 | E 6 | E 6 | E 6 |
| kJ | 251 | 135 | 30 | 202 | — | 139 | 144 | 200 | 130 | 94 | 4 | 12 | 10 | 5 | 12 | 34 | 91 | 103 | 106 | 89 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 373 | 373 | 352 | 2 | 2 | 2 | 2 | 2 | 13 | 103 | 94 | 94 | 13 | 236 | 386 | 703 | 1289 | 1289 | 911 | 236 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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