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 5PM is: 0.6m 10s primary swell from a Southeast direction and 0.2m 15s secondary swell from a South-southeast direction (forecast issued at 08:00am October 04). An open ocean swell of 0.4m 3s is not directed at the surf break. 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 morning, min 19°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||
Sunday 4 | Monday 5 | Tuesday 6 | ||||||||||||||||||||
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) | SE 10 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SSE 16 | SSE 15 | SSE 16 | SSE 15 | SSE 16 | SSE 16 | SSE 16 | SSE 17 | SE 16 | SE 17 | SE 17 | SE 17 | SE 17 | SE 17 | SE 18 | SE 18 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 61 | 61 | 65 | 90 | 85 | 69 | 306 | 461 | 778 | 837 | 1027 | 1257 | 1575 | 2323 | 2349 | 3074 | 3668 | 4043 | 4090 | 4589 | 4852 | 5074 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 12:14PM1.25m | 8:49PM1.35m | 1:47PM1.28m | 10:20PM1.27m | 2:37PM1.33m | |||||||||||||||||
Low Tide | 4:01AM0.37m | 3:47PM1.19m | 5:17AM0.43m | 6:12PM1.18m | 6:41AM0.46m | 7:56PM1.08m | ||||||||||||||||
 | |  | |  |  | | | | | | | | | | | | |  | |  | | |
 | 5:37 | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — |
 | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:21 | — | — | — | — | — | — | — | 5:20 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 22 | 23 | 22 | 21 | 20 | 20 | 19 | 20 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 26 | 26 | 24 | 23 |
Feels °C | 17 | 17 | 19 | 19 | 18 | 17 | 17 | 16 | 15 | 16 | 17 | 19 | 18 | 18 | 19 | 20 | 20 | 20 | 23 | 23 | 20 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SSE 16 | SSE 15 | SSE 16 | SSE 15 | SSE 16 | SSE 16 | SSE 16 | SSE 17 | SE 16 | SE 17 | SE 17 | SE 17 | SE 17 | SE 17 | SE 18 | SE 18 |
| kJ | 61 | 61 | 65 | 90 | 85 | 69 | 306 | 461 | 778 | 837 | 1027 | 1257 | 1575 | 2323 | 2349 | 3074 | 3668 | 4043 | 4090 | 4589 | 4852 | 5074 |
Swell 2 Height (m) Direction Period (s) | SE 14 | SE 14 | SE 15 | SE 16 | SSE 15 | SSE 13 | SSE 18 | SSE 18 | E 15 | E 15 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | E 9 | E 12 | — | — | — | — | — | — |
| kJ | 8 | 8 | 9 | 10 | 21 | 58 | 134 | 182 | 4 | 4 | 264 | 264 | 197 | 153 | 113 | 12 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | ESE 14 | S 15 | E 16 | SSE 15 | E 16 | SSE 16 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | ESE 13 | — | — | — | — | — | — | — | — | — |
| kJ | 20 | 4 | 20 | 21 | 5 | 53 | 4 | 4 | 16 | 16 | 16 | 14 | 18 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 2 | ENE 2 | ENE 3 | ENE 3 | ENE 3 | NE 3 | NE 3 | N 3 | N 3 | N 3 | NNE 3 | NNE 3 | NNE 4 | ENE 9 | — | — | — | — | — | — | — |
| kJ | — | 1 | 1 | 1 | 3 | 3 | 2 | 2 | 4 | 5 | 5 | 3 | 3 | 16 | 185 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 8 | 12 | 12 | 12 | 38 | 0 | 0 | 7 | 145 | 4 | 4 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 8 | 534 | 136 | 510 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
Header Global | ||||||||||||||||||||||
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