Surf Forecasts:
How big are the waves at Katahama today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 4ft (1.2m), 7s period with E swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 5ft (1.5m), 7s period with E swell.
- Evening surf: Evening surf (17 Sep, local time) - 6.5ft (2.0m), 6s period with E swell.
The current surf forecast for Katahama at 9AM is: 1.2m 7s primary swell from a East direction and 0.4m 12s secondary swell from a East direction, 0.1m 9s secondary swell from a South direction (forecast issued at 02:00am September 17). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 4ft (1.2m) | 7s |
| Afternoon (17 Sep) | 5ft (1.5m) | 7s |
| Evening (17 Sep) | 6.5ft (2.0m) | 6s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sat afternoon. Warm (max 25°C on Fri morning, min 21°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||||||||||
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 | 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 12 | E 7 | E 7 | E 7 | E 7 | E 7 | E 6 | SE 9 | SE 9 | S 13 | E 12 | SE 12 | SSE 11 | SSE 11 | SE 14 | SE 14 | SE 13 | SE 13 | ESE 16 | SE 14 | ESE 14 | ESE 13 | SE 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 71 | 51 | 103 | 147 | 173 | 236 | 311 | 331 | 3 | 3 | 3 | 25 | 6 | 13 | 12 | 30 | 192 | 444 | 746 | 3598 | 3383 | 3364 | 3531 | 3853 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross | cross-on | cross | cross | cross |
High Tide | 8:59AM1.43m | 8:10PM1.64m | 10:22AM1.32m | 8:46PM1.52m | 1:24PM1.31m | |||||||||||||||||||
Low Tide | 2:33AM0.47m | 2:10PM1.01m | 3:29AM0.55m | 2:53PM1.15m | 4:47AM0.62m | 4:45PM1.27m | ||||||||||||||||||
 |  |  | |  | |  | | | | | | | | | | | | | |  |  | |  | |
 | — | 5:30 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:51 | — | — | — | — | — | — | — | 5:49 | — | — |
mm | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Temp °C | 21 | 21 | 22 | 23 | 24 | 24 | 24 | 23 | 21 | 21 | 21 | 22 | 25 | 25 | 25 | 24 | 23 | 22 | 22 | 25 | 24 | 23 | 23 | 24 |
Feels °C | 22 | 21 | 21 | 23 | 23 | 23 | 22 | 20 | 19 | 19 | 19 | 18 | 21 | 23 | 23 | 22 | 21 | 21 | 21 | 23 | 22 | 21 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | E 12 | E 12 | E 12 | E 12 | E 12 | S 9 | SE 9 | SE 9 | S 9 | E 12 | SE 12 | SSE 11 | SSE 11 | SE 14 | SE 14 | SE 13 | SE 13 | ESE 16 | SE 14 | ESE 14 | ESE 13 | SE 13 |
| kJ | 61 | 51 | 44 | 44 | 44 | 25 | 25 | 1 | 3 | 3 | 2 | 25 | 6 | 13 | 12 | 30 | 192 | 444 | 710 | 3598 | 3383 | 3364 | 3531 | 3853 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 16 | S 9 | SE 9 | S 9 | S 9 | — | — | SE 9 | SE 9 | SE 9 | SE 9 | S 11 | SE 15 | SE 12 | E 11 | SE 18 | SE 16 | — | — | — | — | — |
| kJ | 71 | 45 | 5 | 2 | 3 | 2 | 2 | — | — | 3 | 3 | 3 | 3 | 2 | 8 | 21 | 10 | 117 | 746 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 5 | E 16 | — | — | E 15 | S 7 | — | — | — | — | S 13 | SE 12 | — | — | S 11 | S 10 | SE 20 | S 10 | S 10 | — | — | — | — | — |
| kJ | 2 | 5 | — | — | 4 | 1 | — | — | — | — | 3 | 6 | — | — | 2 | 2 | 15 | 2 | 2 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 6 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 8 | E 8 | E 8 | ENE 8 | E 8 | ENE 9 | — | — |
| kJ | 23 | 40 | 103 | 147 | 173 | 236 | 311 | 331 | 348 | 398 | 373 | 349 | 270 | 298 | 368 | 293 | 343 | 298 | 257 | 270 | 316 | 791 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 13 | 13 | 13 | 13 | 747 | 13 | 13 | 13 | 351 | 334 | 334 | 334 | 415 | 94 | 355 | 334 | 94 | 94 | 13 | 94 | 373 | 373 | 352 | 352 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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