Surf Forecasts:
How big are the waves at Rock Island today (11 Oct):
- Afternoon surf: Afternoon surf (11 Oct, local time) - 2ft (0.6m), 11s period with ESE swell.
- Evening surf: Evening surf (11 Oct, local time) - 2ft (0.6m), 18s period with SE swell.
The current surf forecast for Rock Island at 7PM is: 0.4m 19s primary swell from a Southeast direction and 0.4m 11s secondary swell from a East-southeast direction (forecast issued at 02:00pm October 11). An open ocean swell of 0.3m 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 (11 Oct) | - | - |
| Afternoon (11 Oct) | 2ft (0.6m) | 11s |
| Evening (11 Oct) | 2ft (0.6m) | 18s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 25°C on Sun afternoon, min 19°C on Sun night). Winds increasing (calm on Tue afternoon, fresh winds from the SSW by Wed morning). | ||||||||||||||||||||
Sun 11 | Monday 12 | Tuesday 13 | ||||||||||||||||||
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) | ESE 11 | ESE 11 | SE 19 | SE 18 | SE 16 | SE 15 | SE 17 | SE 16 | SE 15 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 82 | 85 | 126 | 192 | 371 | 233 | 346 | 560 | 395 | 427 | 410 | 346 | 322 | 304 | 299 | 299 | 282 | 178 | 139 | 75 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | off | off | off | off | off | cross-off | cross-off | off | off | off | off | off | off | glassy | on | cross-on |
High Tide | 4:47PM1.49m | 5:38AM1.56m | 5:11PM1.51m | 6:22AM1.55m | 5:35PM1.53m | |||||||||||||||
Low Tide | 10:55AM0.60m | 11:09PM0.34m | 11:29AM0.68m | 11:43PM0.24m | 12:00PM0.77m | |||||||||||||||
 | |  | | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — |
 | — | 5:13 | — | — | — | — | — | — | — | 5:10 | — | — | — | — | — | — | — | 5:09 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 25 | 23 | 21 | 20 | 20 | 19 | 20 | 22 | 24 | 21 | 20 | 20 | 20 | 19 | 20 | 22 | 24 | 23 | 22 |
Feels °C | 20 | 22 | 19 | 18 | 17 | 17 | 16 | 17 | 17 | 19 | 16 | 16 | 16 | 16 | 14 | 16 | 21 | 24 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 11 | SE 18 | SE 16 | SE 15 | SE 14 | SE 16 | SE 15 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 11 |
| kJ | 82 | 85 | 47 | 192 | 371 | 233 | 203 | 352 | 395 | 427 | 410 | 346 | 322 | 304 | 299 | 299 | 282 | 178 | 139 | 75 |
Swell 2 Height (m) Direction Period (s) | SE 16 | SE 21 | SE 19 | SE 11 | E 10 | SE 10 | SE 17 | SE 16 | — | — | — | — | E 9 | — | ENE 9 | — | E 8 | E 8 | E 8 | E 8 |
| kJ | 10 | 17 | 126 | 30 | 240 | 25 | 143 | 560 | — | — | — | — | 38 | — | 80 | — | 33 | 18 | 21 | 20 |
Swell 3 Height (m) Direction Period (s) | S 9 | SE 18 | S 9 | S 8 | — | — | SE 17 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 12 | 2 | 1 | — | — | 346 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 2 | ENE 2 | ENE 3 | — | NE 3 | NNE 3 | NE 3 | NE 3 | NE 3 | ENE 3 | NE 3 | NNE 3 | NNE 3 | NNE 3 | NNE 3 | — | — | — | — |
| kJ | 2 | 1 | 1 | 1 | — | 2 | 3 | 4 | 4 | 3 | 7 | 7 | 4 | 4 | 3 | 3 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 51 | 38 | 0 | 0 | 8 | 4 | 8 | 8 | 54 | 54 | 136 | 8 | 17 | 10 | 0 | 0 | 0 | 14 | 14 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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