Surf Forecasts:
How big are the waves at Rock Island today (24 Jul):
- Afternoon surf: Afternoon surf (24 Jul, local time) - 1.5ft (0.4m), 7s period with S swell.
- Evening surf: Evening surf (24 Jul, local time) - 1ft (0.3m), 11s period with SE swell.
The current surf forecast for Rock Island at 7PM is: 0.3m 11s primary swell from a Southeast direction and 0.1m 16s secondary swell from a Southeast direction, 0.3m 3s secondary swell from a South direction (forecast issued at 02:00pm July 24). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Jul) | - | - |
| Afternoon (24 Jul) | 1.5ft (0.4m) | 7s |
| Evening (24 Jul) | 1ft (0.3m) | 11s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 27mm), heaviest during Sat night. Warm (max 30°C on Sat morning, min 23°C on Sun night). Winds increasing (calm on Fri night, fresh winds from the NE by Sun night). | ||||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | ||||||||||||||||||
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) | SSE 9 | S 7 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSE 15 | SSE 15 | SSE 9 | SE 15 | SE 15 | SE 11 | SE 11 | SE 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 12 | 17 | 18 | 18 | 18 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 22 | 22 | 9 | 8 | 8 | 18 | 21 | 20 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross | on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | on | on | cross-on | cross-on |
High Tide | 1:49PM1.13m | 11:30PM1.38m | 3:34PM1.21m | 00:29AM1.39m | 4:34PM1.30m | |||||||||||||||
Low Tide | 5:30PM1.04m | 7:33AM0.35m | 7:05PM1.13m | 8:36AM0.25m | 8:38PM1.16m | |||||||||||||||
 | |  |  |  |  | | | | |  | | | | |  | | | |  | |
 | — | — | — | — | — | 4:43 | — | — | — | — | — | — | — | 4:45 | — | — | — | — | — | — |
 | — | — | 6:52 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:50 | — |
mm | — | — | — | — | 2 | — | — | — | — | — | 1 | 7 | 3 | — | — | 1 | 1 | — | 4 | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 30 | 30 | 29 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 26 |
Feels °C | 32 | 30 | 31 | 32 | 34 | 32 | 32 | 32 | 34 | 33 | 32 | 27 | 26 | 26 | 26 | 27 | 27 | 28 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 15 | SE 15 | SE 11 | SE 11 | SE 11 | S 9 |
| kJ | 8 | 8 | 18 | 18 | 18 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 9 | 8 | 5 | 18 | 18 | 6 |
Swell 2 Height (m) Direction Period (s) | S 7 | SE 17 | SE 16 | SE 16 | S 7 | S 7 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SSE 15 | SSE 15 | SSE 9 | SE 11 | SE 15 | SE 15 | SSE 14 | SE 11 |
| kJ | 1 | 11 | 11 | 10 | 4 | 4 | 10 | 10 | 10 | 10 | 10 | 9 | 22 | 22 | 8 | 5 | 8 | 8 | 21 | 18 |
Swell 3 Height (m) Direction Period (s) | SE 18 | SE 11 | SW 7 | SW 7 | SE 16 | SE 16 | S 7 | S 7 | S 7 | S 7 | S 8 | S 8 | S 8 | S 8 | SE 11 | S 7 | S 7 | S 9 | S 8 | SSE 14 |
| kJ | 12 | 5 | 2 | 2 | 10 | 10 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 5 | 4 | 4 | 2 | 5 | 20 |
Wind waves Height (m) Direction Period (s) | S 5 | S 7 | S 3 | S 3 | — | — | — | — | SE 4 | S 2 | S 3 | SSE 3 | — | — | — | — | — | S 2 | SSE 3 | SSE 3 |
| kJ | 2 | 17 | 3 | 1 | — | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | 1 | 1 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 77 | 77 | 77 | 38 | 38 | 16 | 51 | 16 | 16 | 51 | 64 | 51 | 51 | 51 | 51 | 16 | 18 | 77 | 55 | 38 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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