Surf Forecasts:
How big are the waves at Rock Island today (01 Oct):
- Morning surf: Morning surf (01 Oct, local time) - 2.5ft (0.8m), 9s period with S swell.
- Afternoon surf: Afternoon surf (01 Oct, local time) - 3.5ft (1.1m), 8s period with SSE swell.
- Evening surf: Evening surf (01 Oct, local time) - 2.5ft (0.8m), 8s period with SSE swell.
The current surf forecast for Rock Island at 5PM is: 0.9m 8s primary swell from a South-southeast direction and 0.3m 3s secondary swell from a South-southwest direction (forecast issued at 08:00am October 01). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Oct) | 2.5ft (0.8m) | 9s |
| Afternoon (01 Oct) | 3.5ft (1.1m) | 8s |
| Evening (01 Oct) | 2.5ft (0.8m) | 8s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Fri morning. Warm (max 27°C on Thu afternoon, min 18°C on Fri afternoon). Winds increasing (calm on Thu afternoon, fresh winds from the NNE by Fri afternoon). | ||||||||||||||||||||||
Thursday 1 | Friday 2 | Saturday 3 | ||||||||||||||||||||
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) | S 9 | S 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SE 8 | SE 9 | SE 8 | SE 8 | SE 8 | ESE 8 | E 15 | ESE 7 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 83 | 103 | 101 | 184 | 119 | 69 | 58 | 41 | 27 | 18 | 17 | 13 | 8 | 4 | 9 | 12 | 11 | 11 | 11 | 6 | 5 | 8 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | glassy | cross-on | cross | cross | cross-off | off | off | off | off | off | cross-off | off | off | off | cross-off | off | cross-off | cross | cross-off |
High Tide | 8:19AM1.43m | 7:01PM1.52m | 9:17AM1.35m | 7:29PM1.49m | 10:31AM1.28m | 8:03PM1.43m | ||||||||||||||||
Low Tide | 1:30PM0.94m | 2:11AM0.25m | 2:01PM1.04m | 3:00AM0.30m | 2:40PM1.12m | |||||||||||||||||
 |  | | |  | | | | |  |  | |  | |  | | | | | | |  | |
 | 5:35 | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — |
 | — | — | — | 5:27 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:23 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 25 | 27 | 24 | 24 | 24 | 24 | 22 | 21 | 20 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 20 | 22 | 20 | 20 |
Feels °C | 17 | 17 | 23 | 30 | 25 | 25 | 25 | 26 | 20 | 18 | 17 | 14 | 15 | 14 | 13 | 14 | 13 | 13 | 16 | 19 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SE 8 | SE 9 | SE 8 | SE 8 | SE 8 | ESE 8 | SE 9 | ESE 7 |
| kJ | 83 | 103 | 101 | 184 | 119 | 69 | 58 | 41 | 27 | 18 | 17 | 13 | 8 | 4 | 9 | 12 | 11 | 11 | 11 | 6 | 3 | 5 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SSE 12 | S 9 | N 3 | — | S 3 | — | E 11 | SSW 4 | S 4 | S 4 | SE 9 | SE 9 | SE 8 | E 16 | S 6 | — | E 15 | E 15 | SE 8 | SE 12 | SE 10 |
| kJ | 3 | 13 | 42 | 2 | — | 1 | — | 2 | 6 | 1 | 1 | 3 | 3 | 2 | 5 | 1 | — | 4 | 4 | 3 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | SE 11 | E 6 | SSE 11 | — | — | — | E 7 | — | E 11 | SSW 6 | E 16 | — | S 8 | SE 9 | SSE 7 | — | SE 16 | — | S 12 | E 15 | E 15 | SE 14 |
| kJ | 5 | 3 | 25 | — | — | — | 1 | — | 2 | 4 | 5 | — | 1 | 3 | 5 | — | 10 | — | 3 | 4 | 4 | 8 |
Wind waves Height (m) Direction Period (s) | N 3 | N 3 | NNE 3 | — | SSW 3 | — | — | — | — | NNE 3 | NNE 3 | NNE 3 | NE 3 | NE 3 | NE 3 | NE 3 | NNE 3 | NNE 3 | NE 3 | ENE 3 | ESE 2 | ESE 3 |
| kJ | 5 | 5 | 3 | — | 1 | — | — | — | — | 5 | 6 | 10 | 7 | 5 | 5 | 5 | 8 | 5 | 2 | 1 | 2 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 38 | 38 | 0 | 0 | 38 | 77 | 77 | 38 | 104 | 51 | 142 | 249 | 3192 | 999 | 145 | 145 | 145 | 145 | 145 | 51 | 136 | 488 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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