Surf Forecasts:
How big are the waves at Rock Island today (28 Jun):
- Morning surf: Morning surf (28 Jun, local time) - 5ft (1.6m), 11s period with S swell.
- Afternoon surf: Afternoon surf (28 Jun, local time) - 4ft (1.2m), 10s period with S swell.
- Evening surf: Evening surf (28 Jun, local time) - 2.5ft (0.7m), 8s period with SSE swell.
The current surf forecast for Rock Island at 9AM is: 1.6m 11s primary swell from a South direction (forecast issued at 02:00am June 28). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Jun) | 5ft (1.6m) | 11s |
| Afternoon (28 Jun) | 4ft (1.2m) | 10s |
| Evening (28 Jun) | 2.5ft (0.7m) | 8s |
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 14mm), heaviest on Sun morning. Warm (max 26°C on Tue afternoon, min 21°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 28 | Monday 29 | Tuesday 30 | ||||||||||||||||||||||
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 11 | S 11 | S 10 | S 11 | S 10 | S 10 | S 9 | SSE 8 | S 8 | S 8 | S 8 | S 7 | S 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | S 7 | SE 9 | S 7 | S 7 | SSW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 1107 | 1005 | 615 | 595 | 400 | 268 | 198 | 68 | 61 | 34 | 65 | 40 | 29 | 20 | 20 | 21 | 22 | 23 | 23 | 24 | 14 | 27 | 26 | 16 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross-on | cross | off | off | off | off | off | off | cross-off | glassy | cross-on | cross-on | on | glassy | off | off | off | cross-off | cross-off | on | cross-on |
High Tide | 2:09AM1.41m | 5:16PM1.34m | 2:55AM1.44m | 5:59PM1.39m | 3:41AM1.47m | 6:37PM1.42m | ||||||||||||||||||
Low Tide | 9:46AM0.09m | 9:51PM1.06m | 10:30AM0.01m | 10:39PM1.06m | 11:12AM-0.04m | |||||||||||||||||||
 |  |  |  | | | |  |  | | |  | | |  | | | | | | | | | | |
 | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — |
mm | — | — | — | 2 | 4 | 2 | 2 | 1 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 23 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 23 | 25 | 26 | 25 | 24 |
Feels °C | 26 | 24 | 25 | 24 | 21 | 22 | 22 | 22 | 22 | 24 | 23 | 24 | 25 | 25 | 25 | 26 | 26 | 24 | 24 | 24 | 26 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | S 11 | S 10 | S 10 | S 9 | SSE 8 | S 8 | S 8 | S 8 | S 7 | S 8 | S 7 | SSW 8 | SSW 7 | SE 9 | SSW 7 | SSW 7 | S 7 | SSW 6 | S 7 | S 7 | SSW 7 |
| kJ | 1107 | 1005 | 615 | 595 | 400 | 268 | 198 | 68 | 61 | 34 | 65 | 40 | 29 | 14 | 11 | 17 | 22 | 18 | 17 | 24 | 13 | 27 | 26 | 16 |
Swell 2 Height (m) Direction Period (s) | E 16 | E 16 | SSW 12 | — | E 16 | E 15 | E 15 | SSW 9 | SSW 9 | SSE 8 | E 15 | SW 8 | SW 8 | SE 9 | SSE 6 | SE 9 | S 7 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 |
| kJ | 5 | 5 | 177 | — | 5 | 4 | 4 | 56 | 32 | 33 | 4 | 18 | 17 | 20 | 8 | 21 | 8 | 23 | 23 | 14 | 14 | 13 | 13 | 13 |
Swell 3 Height (m) Direction Period (s) | — | SE 16 | E 16 | — | E 9 | ESE 15 | E 8 | E 15 | E 15 | SW 9 | SE 9 | SSE 9 | SSE 9 | SW 8 | SE 9 | E 15 | SW 8 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 |
| kJ | — | 10 | 5 | — | 1 | 22 | 1 | 4 | 4 | 21 | 29 | 8 | 8 | 16 | 20 | 4 | 16 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 27 | 17 | 8 | 64 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 64 | 54 | 38 | 16 | 38 | 38 | 16 | 16 | 16 | 18 | 38 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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