Surf Forecasts:
How big are the waves at Rock Island today (23 Jun):
- Morning surf: Morning surf (23 Jun, local time) - 0.5ft (0.2m), 11s period with SSE swell.
- Afternoon surf: Afternoon surf (23 Jun, local time) - 0.5ft (0.2m), 11s period with SSE swell.
- Evening surf: Evening surf (23 Jun, local time) - 0.5ft (0.2m), 11s period with SSE swell.
The current surf forecast for Rock Island at 6AM is: 0.2m 11s primary swell from a South-southeast direction and 0.2m 6s secondary swell from a South direction (forecast issued at 02:00am June 23). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Jun) | 0.5ft (0.2m) | 11s |
| Afternoon (23 Jun) | 0.5ft (0.2m) | 11s |
| Evening (23 Jun) | 0.5ft (0.2m) | 11s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Thu morning. Warm (max 24°C on Thu night, min 19°C on Thu morning). Winds increasing (calm on Thu morning, strong winds from the SSW by Thu night). | ||||||||||||||||||||||||
Tuesday 23 | Wednesday 24 | Thursday 25 | ||||||||||||||||||||||
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) | SSE 6 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SW 16 | SW 15 | SSW 14 | SW 14 | SW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 11 | 10 | 12 | 13 | 13 | 12 | 12 | 12 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 38 | 35 | 113 | 64 | 88 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | off | off | glassy | on | cross-on | cross-on | glassy | glassy | glassy | cross-on | glassy | glassy | cross | cross-off |
High Tide | 10:40PM1.32m | 10:34AM1.11m | 11:18PM1.31m | 12:14PM1.08m | 11:58PM1.32m | 1:55PM1.11m | ||||||||||||||||||
Low Tide | 4:58AM0.71m | 4:37PM0.61m | 6:05AM0.59m | 5:35PM0.76m | 7:09AM0.46m | 6:41PM0.88m | ||||||||||||||||||
 | |  | | | |  |  | |  | | | | | | | | | |  | | | | | |
 | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 1 | 2 | 1 |
Temp °C | 20 | 20 | 19 | 20 | 21 | 22 | 22 | 20 | 20 | 20 | 20 | 20 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 19 | 19 | 20 | 20 |
Feels °C | 20 | 18 | 16 | 17 | 19 | 21 | 22 | 19 | 20 | 19 | 20 | 20 | 23 | 23 | 22 | 23 | 23 | 23 | 23 | 21 | 22 | 21 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 9 | SW 16 | SSW 9 | SSW 14 | SW 14 | SW 13 |
| kJ | 11 | 7 | 12 | 13 | 13 | 12 | 12 | 12 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 15 | 38 | 17 | 113 | 64 | 88 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | S 6 | S 6 | S 6 | SSE 6 | S 6 | S 6 | S 6 | S 5 | S 5 | SSE 5 | SSE 5 | S 11 | S 11 | S 10 | SSW 10 | SSW 10 | SE 10 | SSW 9 | SW 15 | SSE 10 | SSW 9 | SE 4 |
| kJ | 10 | 10 | 3 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 3 | 3 | 10 | 2 | 2 | 10 | 9 | 16 | 16 | 35 | 10 | 17 | 6 |
Swell 3 Height (m) Direction Period (s) | SSW 7 | SW 7 | SW 7 | SW 7 | ENE 3 | S 6 | S 10 | S 10 | — | — | S 9 | S 11 | S 10 | — | — | S 7 | — | S 8 | SW 16 | SE 10 | SE 10 | — | SSE 10 | SSW 9 |
| kJ | 5 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | — | — | 2 | 2 | 2 | — | — | 1 | — | 4 | 11 | 16 | 15 | — | 10 | 8 |
Wind waves Height (m) Direction Period (s) | ESE 4 | — | ENE 2 | ENE 3 | — | — | — | — | — | — | — | — | — | SE 4 | — | SE 4 | — | — | — | — | — | E 8 | SE 3 | SE 5 |
| kJ | 5 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | 4 | 2 | 29 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 145 | 51 | 74 | 51 | 51 | 64 | 64 | 64 | 61 | 61 | 61 | 61 | 64 | 16 | 64 | 64 | 64 | 64 | 76 | 12 | 0 | 0 | 12 | 0 |
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