Surf Forecasts:
How big are the waves at Katahama today (18 Sep):
- Afternoon surf: Afternoon surf (18 Sep, local time) - 0.5ft (0.1m), 12s period with SE swell.
- Evening surf: Evening surf (18 Sep, local time) - 1.5ft (0.4m), 14s period with SE swell.
The current surf forecast for Katahama at 7PM is: 0.3m 11s primary swell from a Southeast direction and 0.1m 10s secondary swell from a South direction (forecast issued at 02:00pm September 18). An open ocean swell of 1.9m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | - | - |
| Afternoon (18 Sep) | 0.5ft (0.1m) | 12s |
| Evening (18 Sep) | 1.5ft (0.4m) | 14s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 44mm), heaviest during Sun night. Warm (max 26°C on Sat morning, min 22°C on Fri night). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the NNE by Mon morning). | ||||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 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) | SE 12 | SE 12 | SE 11 | SE 14 | SE 14 | SE 14 | SE 16 | SE 16 | SE 14 | SE 14 | SE 13 | ESE 13 | SE 12 | SE 12 | ESE 12 | SE 12 | SE 12 | ESE 12 | ESE 12 | SE 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 6 | 6 | 20 | 72 | 265 | 715 | 1287 | 3499 | 3137 | 3601 | 3201 | 3772 | 2572 | 2449 | 3030 | 2541 | 2635 | 2839 | 2757 | 4022 |
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 | cross | cross-on | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross |
High Tide | 10:22AM1.32m | 8:46PM1.52m | 1:24PM1.31m | 9:42PM1.39m | 2:57PM1.42m | |||||||||||||||
Low Tide | 2:53PM1.15m | 4:47AM0.62m | 4:45PM1.27m | 6:32AM0.65m | 8:29PM1.23m | |||||||||||||||
 | |  | | | |  | | | |  | | |  |  |  | | | |  | |
 | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | 5:51 | — | — | — | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:47 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 1 | 1 | 1 | 4 | 14 |
Temp °C | 25 | 25 | 24 | 23 | 23 | 22 | 22 | 23 | 26 | 26 | 25 | 24 | 25 | 23 | 23 | 23 | 25 | 24 | 23 | 22 |
Feels °C | 22 | 23 | 21 | 19 | 21 | 20 | 20 | 21 | 25 | 26 | 24 | 24 | 25 | 22 | 24 | 22 | 23 | 21 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 11 | SE 14 | SE 14 | SE 14 | SE 16 | SE 16 | SE 14 | SE 14 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SSE 15 | SSE 14 | SE 13 |
| kJ | 6 | 6 | 20 | 72 | 265 | 715 | 1287 | 3499 | 3137 | 3601 | 3201 | 2937 | 2572 | 2449 | 2555 | 2541 | 2635 | 335 | 988 | 4022 |
Swell 2 Height (m) Direction Period (s) | — | S 11 | S 11 | S 10 | S 10 | S 10 | SE 13 | — | — | S 9 | S 9 | S 9 | S 9 | S 9 | — | — | S 15 | E 14 | — | E 13 |
| kJ | — | 2 | 2 | 2 | 2 | 2 | 802 | — | — | 2 | 2 | 2 | 2 | 2 | — | — | 218 | 15 | — | 29 |
Swell 3 Height (m) Direction Period (s) | — | — | S 11 | — | — | S 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 2 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | ESE 13 | ENE 6 | ENE 6 | ESE 12 | ENE 6 | ENE 7 | ESE 12 | ESE 12 | NE 6 |
| kJ | 356 | 477 | 447 | 514 | 355 | 277 | 203 | 190 | 182 | 537 | 400 | 3772 | 256 | 237 | 3030 | 291 | 383 | 2839 | 2757 | 101 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 94 | 355 | 351 | 351 | 351 | 94 | 94 | 334 | 415 | 132 | 132 | 132 | 132 | 103 | 150 | 415 | 415 | 415 | 415 | 373 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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