Surf Forecasts:
How big are the waves at Rock Island today (15 Jun):
- Morning surf: Morning surf (15 Jun, local time) - 1.5ft (0.4m), 5s period with SSE swell.
- Afternoon surf: Afternoon surf (15 Jun, local time) - 1.5ft (0.4m), 8s period with SE swell.
- Evening surf: Evening surf (15 Jun, local time) - 1.5ft (0.5m), 9s period with SE swell.
The current surf forecast for Rock Island at 6AM is: 0.5m 5s primary swell from a South direction and 0.1m 9s secondary swell from a Southeast direction (forecast issued at 02:00am June 15). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Jun) | 1.5ft (0.4m) | 5s |
| Afternoon (15 Jun) | 1.5ft (0.4m) | 8s |
| Evening (15 Jun) | 1.5ft (0.5m) | 9s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Wed night. Warm (max 22°C on Wed morning, min 17°C on Mon morning). Winds decreasing (fresh winds from the NNE on Mon morning, calm by Tue morning). | ||||||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||||||||||||
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 | 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 4 | SSE 5 | S 5 | SSE 5 | S 6 | SE 8 | SE 9 | SE 9 | SE 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 18 | SW 7 | SSW 7 | S 18 | S 18 | S 17 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 18 | 27 | 12 | 10 | 6 | 15 | 39 | 41 | 41 | 46 | 75 | 34 | 16 | 10 | 17 | 10 | 10 | 5 | 6 | 2 | 5 | 6 | 6 | 6 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | off | off | off | off | off | off | off | off | glassy | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 3:31AM1.44m | 6:19PM1.39m | 4:10AM1.47m | 7:00PM1.41m | 4:52AM1.47m | 7:39PM1.41m | ||||||||||||||||||
Low Tide | 10:23PM1.00m | 10:57AM-0.05m | 11:06PM1.02m | 11:37AM-0.08m | 11:48PM1.02m | 12:17PM-0.07m | ||||||||||||||||||
 | |  | | |  |  |  | | | | | | | |  |  | |  | | | | | | |
 | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — |
mm | 1 | 1 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 18 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 19 | 20 | 21 | 21 | 20 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 21 |
Feels °C | 19 | 16 | 13 | 12 | 13 | 13 | 14 | 15 | 16 | 16 | 17 | 20 | 19 | 19 | 19 | 18 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 9 | S 4 | S 5 | SSE 5 | S 6 | SE 8 | SE 9 | SE 9 | SE 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSW 7 | SE 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SSW 7 | S 11 | S 11 | SW 7 |
| kJ | 3 | 15 | 12 | 10 | 6 | 15 | 39 | 41 | 41 | 46 | 44 | 34 | 16 | 10 | 8 | 10 | 10 | 5 | 5 | 2 | 5 | 2 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | E 8 | SE 9 | SE 9 | E 9 | ESE 6 | S 7 | SSE 8 | SSE 8 | SSE 8 | ESE 10 | SSE 8 | SSW 8 | SSW 7 | SE 8 | S 8 | SSE 7 | SSE 7 | SSE 6 | SE 6 | SE 6 | SE 6 | E 9 | SE 10 | SE 10 |
| kJ | 5 | 3 | 3 | 2 | 4 | 8 | 14 | 22 | 24 | 10 | 75 | 11 | 10 | 10 | 1 | 5 | 5 | 4 | 2 | 1 | 1 | 2 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | SW 7 | E 15 | ESE 9 | SSW 6 | SE 9 | E 14 | — | E 11 | — | S 22 | S 21 | E 13 | — | SSE 7 | S 20 | — | E 11 | S 6 | S 18 | S 6 | S 11 | S 18 | S 18 | S 17 |
| kJ | 2 | 4 | 8 | 8 | 3 | 4 | — | 2 | — | 9 | 9 | 3 | — | 5 | 8 | — | 2 | 1 | 6 | 1 | 2 | 6 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | S 4 | SSE 5 | — | NE 3 | NNE 3 | NNE 3 | NNE 3 | NNE 3 | NNE 3 | NNE 3 | — | NNE 3 | — | — | SSW 7 | S 3 | S 3 | — | — | — | — | S 3 | S 3 | S 3 |
| kJ | 18 | 27 | — | 6 | 10 | 9 | 9 | 7 | 3 | 1 | — | 1 | — | — | 17 | 1 | 1 | — | — | — | — | 2 | 2 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 572 | 470 | 470 | 228 | 228 | 145 | 145 | 0 | 0 | 0 | 0 | 16 | 16 | 77 | 55 | 55 | 76 | 76 | 76 | 76 | 77 | 77 | 77 | 77 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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