Surf Forecasts:
How big are the waves at Rock Island today (06 Sep):
- Morning surf: Morning surf (06 Sep, local time) - 0.5ft (0.2m), 8s period with SSE swell.
- Afternoon surf: Afternoon surf (06 Sep, local time) - 1.5ft (0.4m), 8s period with SE swell.
- Evening surf: Evening surf (06 Sep, local time) - 1.5ft (0.5m), 8s period with SE swell.
The current surf forecast for Rock Island at 3AM is: 0.3m 8s primary swell from a South-southwest direction and 0.3m 8s secondary swell from a Southeast direction (forecast issued at 08:00pm September 05). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Sep) | 0.5ft (0.2m) | 8s |
| Afternoon (06 Sep) | 1.5ft (0.4m) | 8s |
| Evening (06 Sep) | 1.5ft (0.5m) | 8s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 275mm), heaviest during Sun night. Warm (max 27°C on Mon morning, min 21°C on Sun afternoon). Winds decreasing (strong winds from the S on Mon morning, light winds from the NNE by Tue morning). | ||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | ||||||||||||||||
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) | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 8 | SSE 8 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | S 10 | SSE 10 | S 9 | S 9 | S 10 | S 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 13 | 13 | 14 | 14 | 11 | 7 | 14 | 17 | 18 | 33 | 97 | 191 | 320 | 644 | 999 | 1124 | 1626 | 782 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | off | off | off | off | off | off | off | cross | cross | cross-on | cross-on | on | on | on |
High Tide | 9:29PM1.40m | 2:50PM1.24m | 10:39PM1.34m | 3:40PM1.32m | ||||||||||||||
Low Tide | 3:39PM1.14m | 5:57AM0.42m | 5:39PM1.22m | 7:20AM0.40m | 8:06PM1.18m | |||||||||||||
 |  | |  |  | |  |  | |  | |  |  | | | | | | |
 | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — |
 | 6:04 | — | — | — | — | — | — | — | 6:02 | — | — | — | — | — | — | — | 6:00 | — |
mm | — | — | — | — | — | — | 2 | 6 | 7 | 20 | 40 | 49 | 42 | 17 | 8 | 4 | 3 | 13 |
Temp °C | 24 | 23 | 22 | 22 | 22 | 22 | 23 | 22 | 21 | 21 | 22 | 24 | 24 | 26 | 27 | 27 | 26 | 26 |
Feels °C | 24 | 21 | 20 | 19 | 18 | 18 | 20 | 20 | 17 | 16 | 20 | 26 | 26 | 24 | 24 | 25 | 24 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 8 | SSE 8 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | S 9 | S 10 | SE 11 | — | — | S 10 | S 10 |
| kJ | 13 | 13 | 14 | 14 | 11 | 7 | 14 | 17 | 18 | 33 | 97 | 137 | 320 | 5 | — | — | 1626 | 782 |
Swell 2 Height (m) Direction Period (s) | ESE 7 | SSE 6 | ESE 6 | SE 8 | SSW 8 | ESE 7 | SSE 8 | SSE 8 | SSE 8 | S 9 | S 9 | — | — | — | — | — | E 9 | E 9 |
| kJ | 4 | 4 | 4 | 11 | 6 | 5 | 7 | 6 | 6 | 28 | 85 | — | — | — | — | — | 38 | 39 |
Swell 3 Height (m) Direction Period (s) | SW 10 | SW 9 | SE 8 | SW 10 | SW 9 | SSW 8 | SW 8 | S 9 | S 9 | SSE 8 | NW 4 | — | — | — | — | — | — | — |
| kJ | 4 | 3 | 3 | 4 | 3 | 7 | 3 | 2 | 7 | 19 | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 2 | ENE 3 | NE 3 | NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | NNE 4 | NE 4 | SE 8 | SE 8 | SSE 10 | S 9 | S 9 | S 10 | — |
| kJ | — | 1 | 3 | 6 | 10 | 13 | 14 | 13 | 21 | 21 | 12 | 191 | 88 | 644 | 999 | 1124 | 858 | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 38 | 487 | 470 | 488 | 552 | 487 | 487 | 487 | 487 | 488 | 552 | 8 | 14 | 228 | 228 | 228 | 228 | 228 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rock Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest