Surf Forecasts:
How big are the waves at Katahama today (18 Aug):
- Afternoon surf: Afternoon surf (18 Aug, local time) - 1.5ft (0.5m), 8s period with SE swell.
- Evening surf: Evening surf (18 Aug, local time) - 2.5ft (0.8m), 7s period with ESE swell.
The current surf forecast for Katahama at 10PM is: 0.8m 7s primary swell from a East-southeast direction (forecast issued at 02:00pm August 18). An open ocean swell of 0.3m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | - | - |
| Afternoon (18 Aug) | 1.5ft (0.5m) | 8s |
| Evening (18 Aug) | 2.5ft (0.8m) | 7s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 28°C on Wed afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||
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) | ESE 8 | E 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 70 | 35 | 36 | 62 | 59 | 56 | 42 | 41 | 40 | 29 | 28 | 25 | 25 | 25 | 27 | 30 | 30 | 30 | 30 | 30 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | cross-off | cross-off | cross-on | on | on | on | glassy | glassy | glassy | glassy | glassy | on | on | cross-on | glassy |
High Tide | 8:26PM1.70m | 9:17AM1.38m | 9:00PM1.63m | 10:43AM1.25m | ||||||||||||||||
Low Tide | 2:11PM0.73m | 3:13AM0.59m | 2:45PM0.89m | 4:14AM0.62m | 3:23PM1.06m | |||||||||||||||
 | | |  | | |  | | | | | | | | | | | | |  | |
 | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — |
 | — | — | 6:31 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 27 | 27 | 28 | 27 | 26 | 26 | 25 | 25 | 27 | 27 | 28 | 27 | 26 |
Feels °C | 29 | 28 | 30 | 29 | 30 | 29 | 28 | 30 | 29 | 30 | 30 | 29 | 31 | 29 | 29 | 31 | 29 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | E 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | S 8 | S 8 |
| kJ | 70 | 29 | 36 | 62 | 59 | 56 | 42 | 41 | 40 | 29 | 28 | 23 | 23 | 15 | 15 | 16 | 16 | 15 | 35 | 50 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SSW 8 | E 8 | SSW 8 | SE 10 | SSW 8 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SSW 9 | SSW 8 | ESE 6 | ESE 6 |
| kJ | 23 | 12 | 21 | 12 | 16 | 12 | 11 | 16 | 25 | 25 | 25 | 25 | 25 | 25 | 27 | 30 | 26 | 24 | 14 | 13 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SW 8 | SSW 8 | SW 8 | SSW 8 | SE 10 | SE 10 | SW 9 | SW 9 | SSW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SSW 8 | SE 11 | SE 11 | SE 11 | SE 11 |
| kJ | 17 | 9 | 12 | 10 | 12 | 16 | 16 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 6 | 30 | 30 | 30 | 30 |
Wind waves Height (m) Direction Period (s) | — | SE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 35 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 13 | 150 | 13 | 13 | 13 | 13 | 13 | 13 | 208 | 208 | 208 | 13 | 6 | 6 | 6 | 6 | 148 | 208 | 208 | 6 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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