Surf Forecasts:
How big are the waves at Rock Island today (01 Aug):
- Morning surf: Morning surf (01 Aug, local time) - 1ft (0.3m), 7s period with SSW swell.
- Afternoon surf: Afternoon surf (01 Aug, local time) - 1.5ft (0.4m), 6s period with SSW swell.
- Evening surf: Evening surf (01 Aug, local time) - 0.5ft (0.2m), 16s period with ESE swell.
The current surf forecast for Rock Island at 1PM is: 0.3m 7s primary swell from a South-southwest direction and 0.1m 8s secondary swell from a Southeast direction (forecast issued at 08:00am August 01). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Aug) | 1ft (0.3m) | 7s |
| Afternoon (01 Aug) | 1.5ft (0.4m) | 6s |
| Evening (01 Aug) | 0.5ft (0.2m) | 16s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 31°C on Sun morning, min 23°C on Sun night). Winds increasing (calm on Sat morning, fresh winds from the NE by Mon night). | ||||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 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) | SSW 7 | SSW 7 | SSW 7 | SSW 6 | ESE 16 | ESE 16 | SE 17 | ESE 18 | SE 15 | ESE 16 | ESE 16 | SE 15 | SE 15 | SE 16 | ESE 15 | SE 15 | SE 16 | SE 16 | SE 16 | ESE 16 | SE 17 | SE 18 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 9 | 9 | 9 | 14 | 25 | 25 | 46 | 30 | 60 | 99 | 97 | 104 | 115 | 121 | 148 | 191 | 201 | 261 | 268 | 452 | 505 | 679 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | on | on | glassy | glassy | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off |
High Tide | 6:03AM1.53m | 7:32PM1.46m | 6:50AM1.50m | 7:56PM1.45m | 7:38AM1.44m | 8:21PM1.45m | ||||||||||||||||
Low Tide | 12:51PM0.19m | 1:07AM0.73m | 1:26PM0.30m | 1:46AM0.65m | 1:59PM0.44m | |||||||||||||||||
 |  | | | |  |  |  | | | | | | |  | |  | | | | |  | |
 | 4:48 | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — |
 | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — |
mm | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 29 | 30 | 29 | 28 | 28 | 28 | 28 | 29 | 31 | 31 | 28 | 25 | 24 | 23 | 23 | 23 | 24 | 26 | 26 | 24 |
Feels °C | 32 | 33 | 32 | 33 | 32 | 33 | 33 | 32 | 31 | 31 | 33 | 33 | 28 | 24 | 23 | 21 | 22 | 21 | 22 | 24 | 24 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SE 15 | ESE 16 | SSW 6 | SSW 6 | SSW 6 | SE 15 | ESE 16 | ESE 16 | SE 15 | SE 15 | SE 16 | ESE 15 | SE 15 | SE 16 | SE 16 | SE 16 | ESE 16 | SE 17 | SE 18 |
| kJ | 9 | 9 | 9 | 8 | 25 | 12 | 11 | 10 | 60 | 99 | 97 | 104 | 115 | 121 | 148 | 191 | 201 | 261 | 268 | 452 | 505 | 679 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 8 | SE 18 | SE 10 | ESE 16 | SE 17 | ESE 14 | SSW 5 | S 5 | S 5 | S 6 | SSW 6 | SE 9 | SE 9 | SSE 9 | SE 9 | S 8 | SE 22 | S 8 | S 8 | E 14 |
| kJ | 4 | 4 | 3 | 12 | 4 | 25 | 46 | 21 | 6 | 5 | 5 | 7 | 4 | 3 | 3 | 8 | 3 | 1 | 74 | 1 | 1 | 4 |
Swell 3 Height (m) Direction Period (s) | S 8 | SE 15 | SE 11 | SE 9 | S 8 | SE 10 | SE 9 | ESE 18 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SSW 6 | SW 6 | — | S 8 | — | S 8 | — | — | — |
| kJ | 1 | 9 | 4 | 3 | 1 | 4 | 3 | 30 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | — | 1 | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 6 | SSW 6 | — | — | — | — | — | — | S 6 | ESE 3 | E 3 | ENE 3 | ENE 3 | NE 3 | NE 3 | NE 3 | E 7 | ENE 3 | ENE 3 |
| kJ | — | — | — | 14 | 13 | — | — | — | — | — | — | 18 | 3 | 4 | 3 | 3 | 5 | 5 | 2 | 23 | 3 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 16 | 76 | 76 | 18 | 18 | 38 | 0 | 0 | 0 | 16 | 38 | 0 | 27 | 38 | 8 | 145 | 8 | 38 | 145 | 0 | 8 | 145 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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