Surf Forecasts:
How big are the waves at Rock Island today (27 Sep):
- Morning surf: Morning surf (27 Sep, local time) - 0.5ft (0.2m), 5s period with S swell.
- Afternoon surf: Afternoon surf (27 Sep, local time) - 0.5ft (0.2m), 5s period with S swell.
- Evening surf: Evening surf (27 Sep, local time) - 1.5ft (0.5m), 7s period with S swell.
The current surf forecast for Rock Island at 7AM is: 0.1m 9s primary swell from a Southeast direction and 0.2m 5s secondary swell from a South direction (forecast issued at 02:00am September 27). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Sep) | 0.5ft (0.2m) | 5s |
| Afternoon (27 Sep) | 0.5ft (0.2m) | 5s |
| Evening (27 Sep) | 1.5ft (0.5m) | 7s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 48mm), heaviest during Tue morning. Warm (max 24°C on Mon morning, min 18°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 27 | Monday 28 | Tuesday 29 | ||||||||||||||||||||||
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 9 | SSE 9 | S 5 | S 5 | S 5 | S 5 | S 7 | S 7 | S 7 | SSW 7 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | S 5 | S 7 | S 7 | S 7 | S 7 | S 6 | SW 12 | SW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 8 | 8 | 3 | 3 | 3 | 3 | 8 | 23 | 24 | 34 | 8 | 11 | 30 | 27 | 33 | 13 | 22 | 22 | 33 | 22 | 22 | 23 | 23 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | cross-off | glassy | glassy | on | cross-on | on | cross-on | on | cross-on | cross-off | glassy | glassy | off | off | off | off | off | off | cross-off |
High Tide | 5:17AM1.57m | 5:26PM1.50m | 6:01AM1.58m | 5:48PM1.52m | 6:45AM1.56m | 6:11PM1.53m | ||||||||||||||||||
Low Tide | 11:04PM0.51m | 11:27AM0.52m | 11:38PM0.39m | 11:59AM0.62m | 00:13AM0.30m | 12:30PM0.72m | ||||||||||||||||||
 |  |  | | | | | | | | | | | | | | | |  |  |  | |  | | |
 | — | 5:31 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 | — | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 9 | 11 | 11 | 8 | 5 |
Temp °C | 19 | 19 | 20 | 21 | 22 | 23 | 23 | 22 | 22 | 23 | 22 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 21 | 20 | 19 | 19 | 18 | 18 |
Feels °C | 18 | 17 | 19 | 20 | 21 | 24 | 25 | 24 | 23 | 25 | 21 | 23 | 25 | 26 | 26 | 27 | 27 | 25 | 22 | 19 | 18 | 18 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SE 9 | S 5 | S 5 | S 5 | S 7 | S 7 | S 7 | SE 9 | SSW 6 | SSW 6 | SE 9 | SE 9 | SSW 5 | S 5 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | SSW 6 | SSW 6 |
| kJ | 8 | 8 | 3 | 2 | 2 | 2 | 8 | 23 | 24 | 3 | 8 | 4 | 3 | 3 | 20 | 13 | 22 | 22 | 33 | 22 | 22 | 21 | 13 | 13 |
Swell 2 Height (m) Direction Period (s) | SE 4 | S 5 | S 5 | SE 9 | SE 9 | SE 8 | SE 8 | SSE 8 | SE 9 | S 13 | SE 9 | SE 9 | SE 10 | SE 10 | SE 8 | SE 8 | SE 8 | SE 8 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 7 | 3 | 4 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | 3 | 7 | 6 | 6 | 23 | 23 | 22 |
Swell 3 Height (m) Direction Period (s) | S 7 | SE 4 | S 8 | S 8 | S 8 | S 8 | S 12 | S 14 | SE 13 | — | S 13 | — | E 9 | E 9 | SE 10 | SE 10 | SE 10 | SW 12 | SE 9 | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 |
| kJ | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 4 | 7 | — | 4 | — | 6 | 2 | 4 | 4 | 4 | 6 | 3 | 3 | 3 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | N 3 | — | — | — | — | — | — | — | — | SSW 7 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | — | — | — | NNE 2 | NNE 2 | — | — | — | — |
| kJ | 1 | — | — | — | — | — | — | — | — | 34 | 8 | 11 | 30 | 27 | 33 | — | — | — | 1 | 1 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 54 | 55 | 55 | 55 | 55 | 54 | 54 | 16 | 18 | 55 | 92 | 86 | 76 | 76 | 0 | 16 | 16 | 16 | 38 | 38 | 38 | 38 | 38 | 38 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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