Surf Forecasts:
How big are the waves at Rock Island today (24 Sep):
- Afternoon surf: Afternoon surf (24 Sep, local time) - 0.5ft (0.2m), 5s period with SSE swell.
- Evening surf: Evening surf (24 Sep, local time) - 0.5ft (0.1m), 8s period with SE swell.
The current surf forecast for Rock Island at 9PM is: 0.1m 8s primary swell from a Southeast direction and 0.1m 5s secondary swell from a Southeast direction (forecast issued at 02:00pm September 24). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Sep) | - | - |
| Afternoon (24 Sep) | 0.5ft (0.2m) | 5s |
| Evening (24 Sep) | 0.5ft (0.1m) | 8s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 22mm), heaviest during Sat morning. Warm (max 25°C on Thu afternoon, min 17°C on Sat morning). Winds increasing (calm on Thu night, fresh winds from the NNE by Sat morning). | ||||||||||||||||||||
Thu 24 | Friday 25 | Saturday 26 | ||||||||||||||||||
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) | SE 5 | SSE 5 | SSE 5 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 3 | SE 3 | SE 8 | SE 8 | SE 8 | S 10 | S 10 | S 13 | SE 9 | SE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 4 | 3 | 3 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross-on | cross | cross-on | glassy | off | off | off | off | off | off |
High Tide | 4:18PM1.42m | 3:42AM1.46m | 4:41PM1.45m | 4:32AM1.53m | 5:03PM1.47m | |||||||||||||||
Low Tide | 9:33AM0.40m | 9:58PM0.80m | 10:16AM0.41m | 10:31PM0.65m | 10:53AM0.46m | |||||||||||||||
 | |  |  |  | |  |  | | | | | |  |  |  | | | | | |
 | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | 5:37 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — | — | 5:34 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 12 | 5 | 2 | 1 | — |
Temp °C | 23 | 25 | 24 | 25 | 24 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 22 | 21 | 21 | 18 | 17 | 17 | 17 | 18 |
Feels °C | 25 | 27 | 25 | 28 | 25 | 23 | 24 | 23 | 25 | 25 | 23 | 23 | 23 | 23 | 21 | 13 | 13 | 12 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | SE 5 | SSE 5 | SSE 5 | SE 5 | SE 5 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 3 | — | — | S 8 | S 8 | SE 10 | SE 9 | SE 9 |
| kJ | 5 | 3 | 3 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | — | — | 1 | 1 | 4 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 5 | — | — | S 7 | S 7 | S 7 | S 7 | SE 8 | SE 8 | SE 8 | S 10 | S 10 | S 7 | E 8 | E 8 |
| kJ | 3 | 3 | 3 | 3 | 3 | 1 | — | — | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | — | — | — | — | S 7 | S 7 | S 7 | S 7 | S 7 | S 13 | — | — |
| kJ | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SE 3 | SE 3 | — | — | — | NNE 3 | NNE 3 | N 3 | NNE 3 | NNE 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | — | 9 | 7 | 6 | 3 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 55 | 55 | 55 | 55 | 61 | 249 | 2483 | 2483 | 122 | 74 | 74 | 74 | 77 | 55 | 54 | 55 | 895 | 249 | 853 | 61 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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