Surf Forecasts:
How big are the waves at Rock Island today (22 Oct):
- Afternoon surf: Afternoon surf (22 Oct, local time) - 4ft (1.2m), 14s period with S swell.
- Evening surf: Evening surf (22 Oct, local time) - 3ft (0.9m), 13s period with S swell.
The current surf forecast for Rock Island at 11PM is: 1.1m 14s primary swell from a South direction and 0.2m 10s secondary swell from a East-southeast direction (forecast issued at 02:00pm October 22). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Oct) | - | - |
| Afternoon (22 Oct) | 4ft (1.2m) | 14s |
| Evening (22 Oct) | 3ft (0.9m) | 13s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Sat afternoon. Warm (max 21°C on Sun morning, min 16°C on Thu night). Winds decreasing (fresh winds from the E on Thu afternoon, calm by Sat night). | ||||||||||||||||||||
Thu 22 | Friday 23 | Saturday 24 | ||||||||||||||||||
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) | S 14 | S 14 | S 13 | S 13 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 14 | S 13 | SSW 13 | SSW 13 | SSW 12 | SSW 13 | SW 14 | SSW 14 | SSW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 691 | 515 | 499 | 264 | 496 | 264 | 492 | 326 | 321 | 252 | 248 | 394 | 345 | 246 | 192 | 109 | 125 | 208 | 180 | 173 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross | cross | cross-off | off | off | off | off | off | off | off |
High Tide | 2:50PM1.37m | 2:38AM1.31m | 3:17PM1.40m | 3:38AM1.40m | 3:43PM1.43m | |||||||||||||||
Low Tide | 8:51PM0.77m | 8:56AM0.57m | 9:28PM0.60m | 9:41AM0.62m | ||||||||||||||||
 | |  |  | | |  | | | | | | | | |  |  |  |  | | |
 | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — |
 | — | 4:59 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 7 | 11 | 5 | — |
Temp °C | 22 | 19 | 18 | 18 | 17 | 17 | 16 | 17 | 18 | 19 | 19 | 19 | 19 | 20 | 19 | 18 | 16 | 16 | 16 | 17 |
Feels °C | 18 | 14 | 14 | 13 | 13 | 13 | 12 | 14 | 17 | 18 | 17 | 18 | 19 | 20 | 18 | 16 | 12 | 12 | 13 | 16 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 14 | S 13 | SSW 13 | SSW 13 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 7 |
| kJ | 691 | 515 | 499 | 264 | 496 | 264 | 492 | 326 | 321 | 252 | 248 | 394 | 345 | 246 | 192 | 41 | 64 | 76 | 72 | 70 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | S 16 | SSW 16 | SSW 15 | ESE 10 | SSW 15 | SE 9 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SE 8 | SE 8 | SE 8 | SE 8 | SSW 12 | SSW 13 | SW 14 | SSW 14 | SSW 14 |
| kJ | 19 | 139 | 337 | 184 | 9 | 176 | 36 | 140 | 98 | 131 | 125 | 98 | 98 | 24 | 24 | 109 | 125 | 208 | 180 | 173 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | ESE 8 | SW 6 | ESE 6 | ESE 9 | SSW 16 | SSW 16 | SE 8 | — | SE 10 | — | — | — | SW 14 | SW 15 | SW 20 | SW 19 | SW 17 |
| kJ | 33 | 45 | 45 | 47 | 2 | 14 | 62 | 226 | 175 | 32 | — | 17 | — | — | — | 91 | 58 | 101 | 14 | 47 |
Wind waves Height (m) Direction Period (s) | NE 3 | ENE 3 | E 3 | E 3 | E 3 | ENE 3 | E 4 | NE 3 | — | — | SE 8 | — | — | — | — | — | N 3 | N 3 | N 3 | NNE 3 |
| kJ | 7 | 4 | 5 | 6 | 4 | 3 | 16 | 5 | — | — | 98 | — | — | — | — | — | 4 | 8 | 6 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 92 | 136 | 552 | 552 | 12 | 488 | 12 | 0 | 0 | 12 | 27 | 12 | 0 | 0 | 0 | 0 | 487 | 38 | 0 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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