Surf Forecasts:
How big are the waves at Katahama today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 16ft (5.0m), 13s period with SSE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 15ft (4.5m), 13s period with SSE swell.
- Evening surf: Evening surf (21 Sep, local time) - 11ft (3.5m), 12s period with SSE swell.
The current surf forecast for Katahama at 10AM is: 5.0m 13s primary swell from a South-southeast direction (forecast issued at 02:00am September 21). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 16ft (5.0m) | 13s |
| Afternoon (21 Sep) | 15ft (4.5m) | 13s |
| Evening (21 Sep) | 11ft (3.5m) | 12s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 72mm), heaviest during Mon morning. Warm (max 28°C on Tue morning, min 22°C on Wed morning). Winds decreasing (strong winds from the NNE on Mon afternoon, calm by Tue morning). | ||||||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||||||||||
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) | SE 12 | SE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SE 12 | SSE 12 | ESE 10 | ESE 10 | ESE 10 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 7 | ENE 5 | E 6 | E 6 | E 6 | E 6 | E 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 4278 | 5498 | 6208 | 7931 | 8453 | 7211 | 6123 | 3405 | 710 | 711 | 334 | 172 | 165 | 111 | 96 | 85 | 77 | 54 | 56 | 197 | 184 | 130 | 125 | 111 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | off | off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross |
High Tide | 00:31AM1.31m | 3:33PM1.51m | 2:17AM1.37m | 4:00PM1.58m | 3:16AM1.47m | 4:22PM1.63m | ||||||||||||||||||
Low Tide | 8:06AM0.62m | 9:30PM1.10m | 9:08AM0.57m | 10:02PM0.97m | 9:51AM0.54m | |||||||||||||||||||
 | |  |  | |  |  |  | |  |  | | |  | | | | | |  | | |  | | |
 | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:44 | — | — |
mm | 1 | 1 | — | 17 | 25 | 10 | 12 | — | — | — | — | — | — | — | — | 1 | 2 | 2 | — | 2 | 1 | — | — | — |
Temp °C | 23 | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 26 | 28 | 27 | 25 | 25 | 23 | 23 | 23 | 22 | 22 | 23 | 23 | 23 |
Feels °C | 20 | 21 | 21 | 20 | 21 | 22 | 25 | 28 | 26 | 26 | 27 | 29 | 30 | 28 | 25 | 27 | 24 | 23 | 23 | 22 | 21 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SE 12 | SSE 12 | ESE 10 | ESE 10 | ESE 10 | SSE 9 | W 6 | W 6 | SSE 8 | SSE 8 | SSE 8 | S 7 | S 7 | S 7 | S 7 | SSE 7 | SSE 6 | E 10 |
| kJ | 4278 | 5498 | 6208 | 7931 | 8453 | 7211 | 6123 | 3405 | 710 | 711 | 334 | 172 | 80 | 50 | 96 | 85 | 77 | 54 | 38 | 15 | 14 | 9 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | E 9 | E 9 | E 10 | SSE 11 | — | S 9 | E 9 | SSE 9 | SSE 8 | W 5 | W 5 | W 4 | SE 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | — | — | — | — | — | 524 | 621 | 770 | 476 | — | 85 | 110 | 165 | 111 | 36 | 11 | 3 | 3 | 7 | 7 | 7 | 7 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 10 | NNE 6 | SE 11 | — | — | — | E 9 | E 9 | E 13 | E 13 | E 9 | W 4 | SE 9 | SE 9 | SSE 9 | SSE 9 | SE 9 | SSE 8 |
| kJ | — | — | — | — | — | — | 388 | 25 | 202 | — | — | — | 41 | 27 | 3 | 3 | 7 | 1 | 3 | 3 | 8 | 8 | 3 | 7 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | ENE 6 | NE 6 | NE 6 | NNE 6 | NNE 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | E 9 | E 4 | E 4 | E 4 | ENE 5 | E 6 | E 6 | E 6 | E 6 | E 6 |
| kJ | 77 | 105 | 305 | 165 | 224 | 197 | 143 | 59 | 182 | 164 | 144 | 102 | 167 | 141 | 43 | 13 | 10 | 17 | 56 | 197 | 184 | 130 | 125 | 111 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 150 | 150 | 150 | 658 | 397 | 369 | 369 | 2 | 2 | 2 | 2 | 2 | 13 | 236 | 94 | 94 | 132 | 94 | 236 | 236 | 1289 | 1289 | 911 | 202 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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