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Surf Forecasts:
Rock Island surfForecast / Kanagawa / Japan
Forecast update in hr min s Forecast update imminent
Rock Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rock Island sea temperature is
19.9° C
(Which is slightly warmer than usual)How big are the waves at Rock Island today?
The current surf forecast for Rock Island at 9PM is: 0.4m 9s primary swell from a Southwest direction and 0.4m 8s secondary swell from a South-southeast direction (forecast issued at 02:00pm May 02). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 May) | - | - |
| Afternoon (02 May) | 2.5ft (0.7m) | 10s |
| Evening (02 May) | 1.5ft (0.4m) | 9s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Sun night. Warm (max 22°C on Mon afternoon, min 15°C on Mon night). Winds increasing (calm on Sun morning, gales from the SSW by Sun night). | ||||||||||||||||||||||||
Sat 2 | Sunday 3 | Monday 4 | Tue 5 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map | ||||||||||||||||||||||||
SSW 10 | SSW 10 | SW 10 | SW 9 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | S 7 | SSW 4 | SSW 5 | SSW 5 | SSW 6 | S 7 | SSW 8 | SSW 9 | SSW 9 | SSW 7 | SSW 7 | S 8 | SW 9 | SSW 8 | SSW 8 | SSW 8 | |
138 | 88 | 28 | 21 | 27 | 22 | 9 | 9 | 14 | 27 | 83 | 126 | 275 | 800 | 1657 | 1259 | 885 | 527 | 581 | 270 | 460 | 122 | 80 | 54 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross | on | on | cross-off | cross-off | off | glassy | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | off | off | off | glassy | |
High Tide | 5:51PM1.38m | 4:45AM1.38m | 6:36PM1.38m | 5:12AM1.40m | 7:22PM1.35m | 5:42AM1.40m | ||||||||||||||||||
Low Tide | 11:03AM0.04m | 11:18PM0.71m | 11:39AM-0.03m | 11:51PM0.79m | 12:16PM-0.07m | 00:25AM0.86m | ||||||||||||||||||
— | — | — | — | — | 4:48 | — | — | — | — | — | — | — | 4:48 | — | — | — | — | — | — | — | 4:47 | — | — | |
— | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:29 | — | — | — | — | 6:30 | |
— | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | — | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 21 | 20 | 20 | 19 | 18 | 17 | 18 | 19 | 20 | 20 | 19 | 18 | 20 | 21 | 21 | 21 | 22 | 20 | 19 | 18 | 15 | 15 | 16 |
16 | 18 | 18 | 18 | 18 | 17 | 16 | 19 | 15 | 13 | 13 | 12 | 11 | 11 | 13 | 14 | 12 | 12 | 10 | 15 | 15 | 6 | 9 | 13 | |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | S 8 | SSE 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | ESE 10 | ESE 10 | SE 10 | SE 10 | ESE 9 | SE 9 | ESE 10 | — | ESE 10 | ESE 10 | SE 11 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
138 | 88 | 28 | 19 | 27 | 22 | 9 | 9 | 10 | 9 | 4 | 4 | 35 | 21 | 18 | — | 20 | 20 | 29 | 270 | 223 | 122 | 80 | 54 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SW 10 | SW 9 | SSE 7 | ESE 9 | SSE 7 | SE 10 | — | — | — | — | — | — | — | — | — | — | — | — | ESE 11 | SE 11 | SE 11 | SE 10 |
12 | 20 | 24 | 21 | 5 | 8 | 5 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | 11 | 4 | 5 | 4 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SSE 8 | S 11 | — | SE 9 | S 7 | SE 10 | SE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
4 | 6 | 3 | — | 3 | 4 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSW 3 | — | — | — | — | E 2 | — | — | S 7 | SSW 4 | SSW 5 | SSW 5 | SSW 6 | S 7 | SSW 8 | SSW 9 | SSW 9 | SSW 7 | SSW 7 | SW 7 | SW 9 | NE 2 | NE 3 | NNE 3 |
3 | — | — | — | — | 1 | — | — | 14 | 27 | 83 | 126 | 275 | 800 | 1657 | 1259 | 885 | 527 | 581 | 144 | 460 | 1 | 5 | 1 | |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 534 | 12 | 16 | 18 | 38 | 38 | 16 | 16 | 572 | 944 | 1434 | 755 | 491 | 491 | 488 | 488 | 470 | 470 | 487 | 14 | 0 | 17 | 0 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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