Surf Forecasts:
How big are the waves at Rock Island today (15 Oct):
- Afternoon surf: Afternoon surf (15 Oct, local time) - 0.5ft (0.2m), 8s period with ESE swell.
- Evening surf: Evening surf (15 Oct, local time) - 2.5ft (0.8m), 7s period with ESE swell.
The current surf forecast for Rock Island at 9PM is: 0.8m 7s primary swell from a East-southeast direction and 0.4m 7s secondary swell from a Southeast direction (forecast issued at 02:00pm October 15). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Oct) | - | - |
| Afternoon (15 Oct) | 0.5ft (0.2m) | 8s |
| Evening (15 Oct) | 2.5ft (0.8m) | 7s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 22°C on Fri afternoon, min 19°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Thu 15 | Friday 16 | Saturday 17 | ||||||||||||||||||
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) | ESE 8 | ESE 8 | ESE 8 | ESE 7 | SE 8 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SSE 5 | SSE 5 | S 9 | SE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ESE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 6 | 6 | 6 | 62 | 16 | 9 | 9 | 8 | 8 | 4 | 2 | 3 | 2 | 3 | 7 | 6 | 6 | 6 | 6 | 5 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | off | off | off | off | off | cross-off | glassy | glassy | off | off | off | cross-off | cross-off | cross-off | cross | cross |
High Tide | 6:27PM1.53m | 8:47AM1.40m | 6:56PM1.50m | 9:50AM1.33m | 7:29PM1.45m | |||||||||||||||
Low Tide | 1:03PM0.96m | 1:38AM0.17m | 1:36PM1.04m | 2:23AM0.22m | 2:15PM1.11m | |||||||||||||||
 | |  | |  | |  | | | | | | |  |  | | | | | | |
 | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — |
 | — | 5:07 | — | — | — | — | — | — | — | 5:06 | — | — | — | — | — | — | — | 5:05 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 20 | 21 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 21 | 22 | 20 | 19 |
Feels °C | 18 | 18 | 17 | 19 | 20 | 19 | 17 | 18 | 20 | 22 | 24 | 23 | 22 | 17 | 16 | 17 | 19 | 21 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | SE 7 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SSE 5 | SSE 5 | SE 5 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ESE 7 |
| kJ | 6 | 6 | 6 | 14 | 15 | 9 | 9 | 8 | 8 | 4 | 2 | 2 | 1 | 3 | 7 | 6 | 6 | 6 | 6 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | E 11 | — | SE 8 | ESE 8 | E 9 | E 9 | E 9 | E 9 | S 10 | S 10 | S 9 | SE 8 | SE 8 | SE 9 | SE 7 | SE 7 | SE 7 | S 7 |
| kJ | — | — | 2 | — | 16 | 7 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 3 | 3 | 3 | 2 | 2 | 2 | 4 |
Swell 3 Height (m) Direction Period (s) | SW 5 | — | SW 6 | SW 5 | E 11 | E 10 | E 10 | S 10 | S 11 | S 10 | E 8 | SE 9 | SE 8 | SE 9 | SE 9 | SE 9 | — | — | — | — |
| kJ | 1 | — | 1 | 1 | 9 | 8 | 8 | 2 | 2 | 2 | 1 | 3 | 2 | 3 | 3 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 3 | ESE 7 | — | — | — | — | — | — | — | — | — | — | NNE 2 | NE 3 | NE 3 | E 3 | SE 3 | SE 4 |
| kJ | — | — | 2 | 62 | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 2 | 1 | 2 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 145 | 64 | 64 | 0 | 16 | 51 | 55 | 54 | 61 | 54 | 55 | 55 | 55 | 55 | 55 | 801 | 1503 | 64 | 64 | 64 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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