Surf Forecasts:
How big are the waves at Rock Island today (16 Jun):
- Morning surf: Morning surf (16 Jun, local time) - 1.5ft (0.5m), 8s period with SSE swell.
- Afternoon surf: Afternoon surf (16 Jun, local time) - 1.5ft (0.4m), 7s period with SSW swell.
- Evening surf: Evening surf (16 Jun, local time) - 0.5ft (0.2m), 7s period with SSE swell.
The current surf forecast for Rock Island at 8AM is: 0.5m 8s primary swell from a South-southeast direction and 0.3m 7s secondary swell from a South-southwest direction (forecast issued at 02:00am June 16). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Jun) | 1.5ft (0.5m) | 8s |
| Afternoon (16 Jun) | 1.5ft (0.4m) | 7s |
| Evening (16 Jun) | 0.5ft (0.2m) | 7s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Wed night. Warm (max 24°C on Thu afternoon, min 19°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
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) | SE 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 7 | S 7 | SSE 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 7 | S 3 | S 3 | S 3 | SE 4 | SSE 4 | S 5 | S 6 | S 6 | S 7 | S 7 | S 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 40 | 78 | 47 | 34 | 15 | 20 | 27 | 5 | 5 | 5 | 5 | 5 | 14 | 3 | 5 | 4 | 9 | 7 | 13 | 37 | 24 | 55 | 81 | 79 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | cross-on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross | off | off | off | off | off | off | off |
High Tide | 4:10AM1.47m | 7:00PM1.41m | 4:52AM1.47m | 7:39PM1.41m | 5:34AM1.46m | 8:16PM1.39m | ||||||||||||||||||
Low Tide | 11:06PM1.02m | 11:37AM-0.08m | 11:48PM1.02m | 12:17PM-0.07m | 00:30AM1.01m | 12:57PM-0.03m | ||||||||||||||||||
 | |  | | |  |  |  | |  | | | | | | |  | |  | | | | | | |
 | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 19 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 21 | 21 | 23 | 24 | 23 |
Feels °C | 17 | 18 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 21 | 22 | 20 | 19 | 20 | 20 | 23 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 8 | SSE 8 | SSE 8 | SE 8 | SE 7 | SE 7 | SSE 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 11 | SE 6 | SE 6 | SW 7 | S 4 | SSE 4 | S 5 | S 6 | S 6 | S 7 | S 7 | S 7 |
| kJ | 40 | 55 | 44 | 34 | 15 | 14 | 12 | 5 | 5 | 5 | 5 | 5 | 2 | 1 | 1 | 2 | 4 | 7 | 13 | 37 | 24 | 55 | 81 | 79 |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSW 7 | SSW 7 | S 20 | S 20 | SSW 7 | SSE 7 | SSE 6 | SE 6 | SE 6 | S 18 | S 11 | S 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 7 | SE 10 | SE 9 | SE 9 |
| kJ | 21 | 78 | 47 | 11 | 11 | 8 | 8 | 5 | 4 | 4 | 1 | 1 | 6 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 18 | 4 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | S 22 | E 13 | SSE 8 | E 13 | — | SSW 7 | E 8 | SE 11 | S 6 | E 9 | E 11 | SE 9 | E 9 | E 9 | SE 10 | SE 5 | SW 6 | SW 8 | SW 8 | S 16 | SE 10 | SE 9 | — | — |
| kJ | 9 | 3 | 7 | 3 | — | 20 | 23 | 5 | 1 | 2 | 2 | 3 | 2 | 2 | 4 | 1 | 2 | 2 | 2 | 5 | 4 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | NNE 3 | NNE 3 | — | — | — | SSW 7 | S 7 | SSW 3 | SSW 3 | SSW 3 | SSW 3 | — | S 7 | S 3 | S 3 | S 3 | SE 4 | — | — | NNE 2 | NNE 2 | NNE 3 | N 3 | — |
| kJ | 1 | 2 | — | — | — | 17 | 27 | 3 | 1 | 1 | 1 | — | 14 | 3 | 5 | 4 | 9 | — | — | 1 | 1 | 2 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 16 | 18 | 77 | 76 | 76 | 76 | 76 | 76 | 76 | 77 | 77 | 77 | 77 | 77 | 104 | 51 | 38 | 38 | 0 | 0 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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