Surf Forecasts:
How big are the waves at Rock Island today (31 Oct):
- Afternoon surf: Afternoon surf (31 Oct, local time) - 3.5ft (1.0m), 18s period with SSE swell.
- Evening surf: Evening surf (31 Oct, local time) - 3ft (0.9m), 16s period with SE swell.
The current surf forecast for Rock Island at 9PM is: 0.9m 16s primary swell from a Southeast direction and 0.7m 20s secondary swell from a South-southeast direction (forecast issued at 02:00pm October 31). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Oct) | - | - |
| Afternoon (31 Oct) | 3.5ft (1.0m) | 18s |
| Evening (31 Oct) | 3ft (0.9m) | 16s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Mon afternoon. Warm (max 21°C on Sat afternoon, min 13°C on Mon afternoon). Wind will be generally light. | ||||||||||||||||||||
Sat 31 | Sunday 1 | Monday 2 | ||||||||||||||||||
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) | SSE 19 | SSE 18 | SE 17 | SE 16 | SSE 20 | SSE 18 | SSE 19 | SSE 19 | SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 742 | 659 | 470 | 432 | 465 | 616 | 1060 | 486 | 584 | 1107 | 1037 | 1136 | 1045 | 966 | 572 | 468 | 461 | 384 | 373 | 312 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | off | off | cross-off | cross | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-on | off | off | off |
High Tide | 9:16AM1.37m | 6:59PM1.46m | 10:19AM1.33m | 7:42PM1.38m | 11:28AM1.31m | 8:42PM1.28m | ||||||||||||||
Low Tide | 1:52PM1.10m | 2:38AM0.21m | 2:47PM1.13m | 3:33AM0.31m | 4:11PM1.13m | |||||||||||||||
 |  |  | | | |  | | | | | | | | | | |  |  |  | |
 | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — |
 | — | 4:49 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 8 | 1 |
Temp °C | 21 | 21 | 21 | 19 | 18 | 16 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 18 | 17 | 17 | 20 | 14 | 13 | 14 |
Feels °C | 17 | 18 | 19 | 13 | 13 | 11 | 13 | 13 | 14 | 14 | 17 | 16 | 15 | 14 | 15 | 15 | 17 | 10 | 8 | 10 |
Swell 1 Height (m) Direction Period (s) | SSE 19 | SSE 18 | SE 17 | SE 16 | SE 15 | SSE 18 | SSE 17 | SE 14 | SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 |
| kJ | 742 | 659 | 470 | 432 | 465 | 616 | 996 | 297 | 584 | 1107 | 1037 | 1136 | 1045 | 966 | 572 | 468 | 461 | 384 | 373 | 312 |
Swell 2 Height (m) Direction Period (s) | SE 19 | SW 6 | SSE 20 | SSE 20 | SSE 20 | SE 15 | SSE 19 | SSE 16 | SSE 18 | — | — | E 10 | E 10 | ESE 9 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | S 6 |
| kJ | 577 | 32 | 162 | 353 | 432 | 314 | 1060 | 412 | 516 | — | — | 8 | 16 | 17 | 13 | 15 | 9 | 9 | 6 | 28 |
Swell 3 Height (m) Direction Period (s) | SSW 6 | S 6 | SW 7 | SSW 8 | SW 8 | SW 7 | — | SSE 19 | — | — | — | — | — | — | — | — | — | ESE 9 | — | — |
| kJ | 27 | 7 | 8 | 6 | 20 | 19 | — | 486 | — | — | — | — | — | — | — | — | — | 15 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 4 | SW 5 | SW 5 | SW 5 | — | N 2 | NNE 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 27 | 47 | 34 | 21 | — | 1 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 12 | 0 | 10 | 14 | 14 | 10 | 2 | 10 | 0 | 0 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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