Surf Forecasts:
How big are the waves at Katahama today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 0.5ft (0.1m), 12s period with SE swell.
- 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 8AM is: 0.1m 12s primary swell from a Southeast direction and 0.1m 9s secondary swell from a Southeast direction (forecast issued at 02:00am September 18). An open ocean swell of 1.8m 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) | 0.5ft (0.1m) | 12s |
| 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 51mm), heaviest during Sun night. Warm (max 26°C on Sat morning, min 22°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||||||||||
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 9 | SE 9 | S 13 | SE 12 | SSE 12 | SE 12 | SSE 11 | SE 14 | SE 14 | SE 14 | SE 16 | SE 15 | SE 14 | SE 14 | ESE 13 | SE 13 | ESE 12 | ESE 12 | SE 12 | SE 12 | SE 12 | SE 13 | SE 13 | SE 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 3 | 3 | 3 | 6 | 14 | 5 | 12 | 52 | 265 | 715 | 1123 | 3103 | 3757 | 3391 | 3247 | 2590 | 2081 | 1888 | 2271 | 2878 | 2895 | 4284 | 4696 | 4443 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross-off | cross-off |
High Tide | 10:22AM1.32m | 8:46PM1.52m | 1:24PM1.31m | 9:42PM1.39m | 2:57PM1.42m | |||||||||||||||||||
Low Tide | 3:29AM0.55m | 2:53PM1.15m | 4:47AM0.62m | 4:45PM1.27m | 6:32AM0.65m | 8:29PM1.23m | ||||||||||||||||||
 | |  | | | | | | | | |  | | |  | | | |  |  | | |  | | |
 | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:51 | — | — | — | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:47 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | 2 | 13 | 11 |
Temp °C | 22 | 21 | 21 | 22 | 24 | 25 | 24 | 23 | 23 | 22 | 22 | 24 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 22 | 22 |
Feels °C | 19 | 17 | 17 | 18 | 21 | 23 | 21 | 20 | 21 | 20 | 20 | 22 | 25 | 26 | 25 | 24 | 24 | 25 | 25 | 22 | 21 | 21 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | S 9 | SE 9 | SSE 12 | SE 12 | SSE 11 | SE 14 | SE 14 | SE 14 | SE 13 | SE 15 | SE 14 | SE 14 | ESE 13 | SE 13 | ESE 12 | ESE 12 | SE 12 | SE 12 | SE 12 | SE 13 | SE 13 | SE 13 |
| kJ | 3 | 3 | 2 | 3 | 14 | 5 | 12 | 52 | 265 | 715 | 802 | 3103 | 3757 | 3391 | 3247 | 2590 | 2081 | 1888 | 2271 | 2878 | 2895 | 4284 | 4696 | 4443 |
Swell 2 Height (m) Direction Period (s) | — | — | S 13 | SE 12 | — | S 11 | SE 15 | SSE 12 | S 10 | S 10 | SE 16 | — | — | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | — | — | SSE 15 | — | E 13 |
| kJ | — | — | 3 | 6 | — | 2 | 9 | 14 | 2 | 2 | 1123 | — | — | 2 | 2 | 2 | 2 | 2 | 2 | — | — | 849 | — | 13 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 11 | S 10 | — | — | S 10 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 2 | 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 8 | E 8 | E 8 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | NE 6 | NE 6 |
| kJ | 410 | 454 | 476 | 412 | 368 | 313 | 458 | 470 | 408 | 326 | 228 | 191 | 245 | 517 | 503 | 374 | 319 | 263 | 249 | 363 | 279 | 596 | 307 | 124 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 334 | 334 | 334 | 334 | 415 | 355 | 355 | 351 | 355 | 94 | 94 | 351 | 352 | 132 | 132 | 132 | 132 | 352 | 202 | 202 | 430 | 415 | 415 | 373 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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