Surf Forecasts:
How big are the waves at Rock Island today (04 Oct):
- Morning surf: Morning surf (04 Oct, local time) - 2ft (0.6m), 10s period with SE swell.
- Afternoon surf: Afternoon surf (04 Oct, local time) - 2ft (0.6m), 11s period with SE swell.
- Evening surf: Evening surf (04 Oct, local time) - 2ft (0.6m), 10s period with SE swell.
The current surf forecast for Rock Island at 3AM is: 0.4m 10s primary swell from a Southeast direction and 0.1m 14s secondary swell from a Southeast direction (forecast issued at 08:00pm October 03). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Oct) | 2ft (0.6m) | 10s |
| Afternoon (04 Oct) | 2ft (0.6m) | 11s |
| Evening (04 Oct) | 2ft (0.6m) | 10s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 19°C on Sun night). Winds increasing (light winds from the NE on Sat night, fresh winds from the NE by Tue afternoon). | ||||||||||||||||||
Sat 3 | Sunday 4 | Monday 5 | ||||||||||||||||
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 8 | SE 8 | ESE 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SE 16 | SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 16 | SSE 16 | SE 16 |
Wave Graph  | ||||||||||||||||||
 kJ | 17 | 17 | 28 | 34 | 61 | 61 | 65 | 71 | 84 | 68 | 400 | 461 | 778 | 826 | 1083 | 1027 | 1339 | 1631 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | cross-off | off |
High Tide | 8:03PM1.43m | 12:14PM1.25m | 8:49PM1.35m | 1:47PM1.28m | ||||||||||||||
Low Tide | 4:01AM0.37m | 3:47PM1.19m | 5:17AM0.43m | 6:12PM1.18m | ||||||||||||||
 | | | |  | | |  |  | | | |  | | | | | | |
 | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:21 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 22 | 21 | 20 | 20 | 19 | 19 | 20 | 22 | 23 | 23 | 22 |
Feels °C | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 17 | 15 | 14 | 16 | 19 | 20 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | ESE 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SE 16 | SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 16 | SSE 16 | SE 16 |
| kJ | 17 | 17 | 28 | 34 | 61 | 61 | 65 | 71 | 84 | 68 | 400 | 461 | 778 | 826 | 1083 | 1027 | 1339 | 1631 |
Swell 2 Height (m) Direction Period (s) | E 15 | SE 10 | SE 10 | SE 14 | SE 14 | SE 14 | SE 15 | SSE 15 | SSE 15 | SSE 13 | SSE 18 | SSE 18 | E 15 | E 15 | ESE 10 | ESE 11 | ESE 10 | ESE 10 |
| kJ | 4 | 4 | 4 | 8 | 8 | 8 | 9 | 21 | 21 | 58 | 134 | 182 | 4 | 4 | 333 | 22 | 281 | 163 |
Swell 3 Height (m) Direction Period (s) | S 12 | SE 14 | SE 12 | ESE 14 | ESE 14 | S 15 | E 16 | SE 16 | E 16 | SSE 16 | E 14 | ESE 14 | E 14 | E 14 | E 14 | — | E 13 | E 13 |
| kJ | 3 | 8 | 6 | 20 | 20 | 4 | 20 | 10 | 5 | 53 | 4 | 41 | 16 | 16 | 16 | — | 14 | 14 |
Wind waves Height (m) Direction Period (s) | — | E 2 | ENE 3 | — | — | NE 2 | ENE 3 | ENE 3 | E 3 | E 3 | NE 3 | NNE 3 | NNE 3 | NNE 3 | NNE 4 | NNE 3 | NE 3 | NNE 3 |
| kJ | — | 1 | 4 | — | — | 1 | 1 | 1 | 4 | 5 | 7 | 3 | 3 | 3 | 14 | 7 | 9 | 10 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 488 | 38 | 38 | 8 | 0 | 12 | 12 | 38 | 487 | 487 | 0 | 7 | 145 | 4 | 0 | 0 | 8 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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