Surf Forecasts:
How big are the waves at Katahama today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 3.5ft (1.0m), 8s period with E swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 3ft (0.9m), 9s period with ESE swell.
- Evening surf: Evening surf (17 Aug, local time) - 3ft (0.9m), 8s period with ESE swell.
The current surf forecast for Katahama at 11AM is: 1.0m 9s primary swell from a East direction and 0.3m 11s secondary swell from a Southeast direction (forecast issued at 08:00am August 17). An open ocean swell of 0.6m 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 (17 Aug) | 3.5ft (1.0m) | 8s |
| Afternoon (17 Aug) | 3ft (0.9m) | 9s |
| Evening (17 Aug) | 3ft (0.9m) | 8s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Wed morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||
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) | E 8 | E 8 | E 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 10 | SE 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 113 | 140 | 158 | 126 | 127 | 101 | 101 | 80 | 78 | 70 | 115 | 47 | 56 | 62 | 59 | 57 | 54 | 41 | 35 | 34 | 32 | 30 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | on | on | on | cross-on | cross-off | cross | cross-on | on | on | on | cross-on | glassy | glassy | glassy | cross-on | on | on | on | on |
High Tide | 7:35AM1.61m | 7:54PM1.75m | 8:21AM1.51m | 8:26PM1.70m | 9:17AM1.38m | 9:00PM1.63m | ||||||||||||||||
Low Tide | 1:39PM0.59m | 2:23AM0.57m | 2:11PM0.73m | 3:13AM0.59m | 2:45PM0.89m | |||||||||||||||||
 |  | | | |  |  | | | | | | | | | | | | | | | | |
 | 5:07 | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — |
 | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 26 | 27 | 27 | 26 | 26 | 25 | 24 | 25 | 26 | 27 | 27 | 26 | 26 | 25 | 24 | 24 | 26 | 28 | 28 | 26 | 26 |
Feels °C | 26 | 27 | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 29 | 28 | 28 | 30 | 29 | 27 | 27 | 28 | 30 | 30 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | E 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 10 | SE 10 | ESE 6 |
| kJ | 57 | 55 | 54 | 54 | 35 | 101 | 101 | 80 | 78 | 70 | 76 | 29 | 12 | 62 | 59 | 57 | 54 | 41 | 35 | 25 | 25 | 30 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 10 | SE 10 | SSW 8 | SW 9 | SE 10 |
| kJ | 19 | 30 | 19 | 18 | 18 | 37 | 34 | 42 | 26 | 24 | 23 | 12 | 12 | 12 | 12 | 11 | 12 | 16 | 25 | 12 | 12 | 25 |
Swell 3 Height (m) Direction Period (s) | ESE 9 | E 9 | S 16 | S 16 | SW 8 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SW 8 | SE 10 | SW 8 | SW 8 | SE 10 | SE 10 | SW 9 | SW 9 | SW 9 | SSW 8 | SW 9 |
| kJ | 8 | 6 | 5 | 5 | 11 | 18 | 18 | 18 | 17 | 17 | 17 | 9 | 16 | 10 | 10 | 16 | 16 | 12 | 12 | 12 | 12 | 12 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 9 | ESE 9 | ESE 8 | — | — | ENE 2 | ENE 2 | — | ESE 8 | ESE 8 | SE 7 | — | — | — | — | — | — | ESE 7 | ESE 6 | — |
| kJ | 113 | 140 | 158 | 126 | 127 | — | — | 1 | 1 | — | 115 | 47 | 56 | — | — | — | — | — | — | 34 | 32 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 103 | 103 | 103 | 104 | 104 | 104 | 104 | 104 | 104 | 13 | 13 | 13 | 150 | 150 | 150 | 13 | 13 | 13 | 13 | 13 | 13 | 148 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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