Surf Forecasts:
How big are the waves at Rock Island today (29 Sep):
- Morning surf: Morning surf (29 Sep, local time) - 2.5ft (0.7m), 7s period with S swell.
- Afternoon surf: Afternoon surf (29 Sep, local time) - 1ft (0.3m), 14s period with SW swell.
- Evening surf: Evening surf (29 Sep, local time) - 1.5ft (0.4m), 14s period with SW swell.
The current surf forecast for Rock Island at 4AM is: 0.8m 7s primary swell from a South direction and 0.1m 14s secondary swell from a Southwest direction (forecast issued at 08:00pm September 28). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Sep) | 2.5ft (0.7m) | 7s |
| Afternoon (29 Sep) | 1ft (0.3m) | 14s |
| Evening (29 Sep) | 1.5ft (0.4m) | 14s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 110mm), heaviest during Thu afternoon. Warm (max 25°C on Mon night, min 17°C on Tue night). Mainly fresh winds. | ||||||||||||||||||
Mon 28 | Tuesday 29 | Wednesday 30 | ||||||||||||||||
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) | SSW 6 | SSW 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 12 | SW 12 | SW 11 | SW 11 | SSW 11 | SSW 11 | SSW 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 88 | 180 | 97 | 77 | 61 | 45 | 33 | 31 | 46 | 64 | 84 | 101 | 69 | 64 | 60 | 82 | 103 | 82 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | off | off | cross-off | off | off | off | off | cross-off | off | off | off | off | cross-off | cross-off | off | off |
High Tide | 5:48PM1.52m | 6:45AM1.56m | 6:11PM1.53m | 7:30AM1.50m | 6:36PM1.53m | |||||||||||||
Low Tide | 00:13AM0.30m | 12:30PM0.72m | 00:49AM0.25m | 1:00PM0.83m | ||||||||||||||
 | | |  |  | |  | |  | | | | |  | | | | | |
 | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:28 | — | — |
mm | — | — | — | 1 | 1 | 4 | 7 | 8 | 7 | 10 | 9 | 6 | 1 | — | — | — | — | — |
Temp °C | 24 | 25 | 23 | 22 | 22 | 20 | 19 | 18 | 18 | 17 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 |
Feels °C | 24 | 27 | 25 | 23 | 24 | 18 | 17 | 15 | 16 | 16 | 18 | 17 | 18 | 17 | 17 | 18 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | — | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 6 | SW 14 | SW 13 | SSW 12 | SW 12 | SW 11 | SW 11 | SSW 11 | SSW 11 | SSW 10 |
| kJ | — | 92 | 97 | 77 | 61 | 45 | 33 | 22 | 14 | 64 | 84 | 101 | 69 | 64 | 60 | 82 | 103 | 82 |
Swell 2 Height (m) Direction Period (s) | E 8 | — | SW 16 | SW 15 | SW 14 | SW 13 | SW 14 | SW 14 | SW 14 | S 6 | S 6 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 7 | SE 7 |
| kJ | 1 | — | 9 | 8 | 29 | 28 | 31 | 31 | 46 | 12 | 7 | 3 | 3 | 3 | 3 | 3 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | SE 13 | — | S 13 | S 12 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | — | — | SE 12 | E 6 | SE 7 | SE 8 | SE 8 |
| kJ | 7 | — | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | — | — | 6 | 1 | 2 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 7 | — | — | — | — | — | — | — | NE 3 | — | ESE 9 | — | NE 2 | NE 2 | ENE 3 | ENE 2 | NE 2 |
| kJ | 88 | 180 | — | — | — | — | — | — | — | 2 | — | 16 | — | 1 | 2 | 1 | 1 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 27 | 10 | 0 | 0 | 0 | 8 | 0 | 38 | 0 | 2 | 0 | 0 | 0 | 0 | 17 | 8 | 0 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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