Surf Forecasts:
How big are the waves at Katahama today (20 Aug):
- Afternoon surf: Afternoon surf (20 Aug, local time) - 1.5ft (0.4m), 11s period with SE swell.
- Evening surf: Evening surf (20 Aug, local time) - 1.5ft (0.4m), 11s period with SE swell.
The current surf forecast for Katahama at 9PM is: 0.4m 11s primary swell from a Southeast direction and 0.4m 6s secondary swell from a Southeast direction (forecast issued at 02:00pm August 20). An open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | - | - |
| Afternoon (20 Aug) | 1.5ft (0.4m) | 11s |
| Evening (20 Aug) | 1.5ft (0.4m) | 11s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 28°C on Sat morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | ||||||||||||||||||
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 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 13 | SE 14 | E 10 | E 10 | E 11 | E 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 31 | 31 | 49 | 47 | 68 | 102 | 112 | 112 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross |
High Tide | 10:43AM1.25m | 9:40PM1.54m | 1:49PM1.24m | 10:40PM1.45m | 3:42PM1.37m | |||||||||||||||
Low Tide | 3:23PM1.06m | 5:36AM0.65m | 4:29PM1.22m | 7:17AM0.62m | 7:59PM1.28m | |||||||||||||||
 |  | |  |  | | |  | | | | | | | | | | | | | |
 | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — |
 | — | — | 6:30 | — | — | — | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:27 | — |
mm | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 27 | 28 | 28 | 27 | 26 |
Feels °C | 29 | 29 | 30 | 30 | 30 | 29 | 29 | 30 | 28 | 28 | 30 | 29 | 29 | 30 | 29 | 30 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | SSW 8 | S 8 | S 8 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 |
| kJ | 16 | 24 | 35 | 51 | 78 | 84 | 108 | 106 | 106 | 113 | 146 | 166 | 163 | 161 | 158 | 130 | 146 | 119 | 130 | 103 |
Swell 2 Height (m) Direction Period (s) | SSW 9 | SE 6 | SE 6 | SE 6 | SE 11 | ESE 9 | SE 11 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 11 | E 11 |
| kJ | 26 | 9 | 9 | 9 | 30 | 26 | 30 | 26 | 28 | 28 | 28 | 30 | 16 | 30 | 49 | 47 | 68 | 102 | 112 | 112 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | SE 11 | SE 6 | SE 11 | E 9 | SE 11 | SE 11 | SE 11 | SE 11 | E 9 | SE 11 | SE 11 | SE 13 | SE 14 | SE 13 | SSE 10 | SE 5 | SE 5 |
| kJ | 30 | 30 | 30 | 30 | 8 | 30 | 14 | 30 | 30 | 30 | 29 | 16 | 31 | 31 | 45 | 46 | 42 | 10 | 5 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SSW 3 | SSW 3 | SSW 3 | — | — | — | — | SW 2 | SW 3 | SW 3 | SW 3 |
| kJ | — | — | — | — | — | — | — | — | — | 2 | 3 | 1 | — | — | — | — | 1 | 4 | 5 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 208 | 208 | 208 | 2 | 2 | 2 | 2 | 6 | 65 | 208 | 6 | 6 | 6 | 2 | 2 | 6 | 65 | 65 | 6 | 6 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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