Surf Forecasts:
How big are the waves at Rock Island today (30 Jun):
- Morning surf: Morning surf (30 Jun, local time) - 1.5ft (0.4m), 10s period with SE swell.
- Afternoon surf: Afternoon surf (30 Jun, local time) - 1.5ft (0.4m), 9s period with SE swell.
- Evening surf: Evening surf (30 Jun, local time) - 1.5ft (0.4m), 7s period with SSW swell.
The current surf forecast for Rock Island at 7AM is: 0.4m 10s primary swell from a Southeast direction and 0.3m 7s secondary swell from a South-southwest direction (forecast issued at 02:00am June 30). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Jun) | 1.5ft (0.4m) | 10s |
| Afternoon (30 Jun) | 1.5ft (0.4m) | 9s |
| Evening (30 Jun) | 1.5ft (0.4m) | 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 9mm), mostly falling on Thu morning. Warm (max 25°C on Tue morning, min 20°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 30 | Wednesday 1 | Thursday 2 | ||||||||||||||||||||||
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 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SSW 7 | SSW 7 | S 7 | S 7 | SSW 7 | SE 9 | SE 9 | S 6 | ESE 9 | ESE 9 | SSW 6 | S 5 | E 12 | SSW 5 | SSW 5 | SSW 6 | SSW 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 22 | 23 | 23 | 23 | 22 | 22 | 13 | 15 | 15 | 26 | 24 | 15 | 14 | 17 | 20 | 8 | 8 | 4 | 5 | 3 | 17 | 36 | 114 | 60 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | off | cross-off | cross-off | on | on | on | on | glassy | glassy | glassy | on | on | on | on | on | cross-on | on | on | on | on | on | off |
High Tide | 3:41AM1.47m | 6:37PM1.42m | 4:26AM1.49m | 7:12PM1.43m | 5:12AM1.49m | 7:45PM1.43m | ||||||||||||||||||
Low Tide | 10:39PM1.06m | 11:12AM-0.04m | 11:24PM1.04m | 11:52AM-0.05m | 00:05AM1.01m | 12:32PM-0.02m | ||||||||||||||||||
 | |  |  |  | | | |  | | | | | | |  | | |  | | | | |  | |
 | — | 4:28 | — | — | — | — | — | — | — | 4:30 | — | — | — | — | — | — | — | 4:30 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 1 | — | 1 | 2 |
Temp °C | 22 | 22 | 22 | 23 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 24 | 22 | 20 | 21 | 23 | 23 | 21 |
Feels °C | 24 | 25 | 25 | 24 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 22 | 21 | 22 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SSW 7 | SSW 7 | SSW 7 | S 7 | S 7 | SSW 7 | SSW 6 | SE 9 | SE 9 | SSW 6 | SSW 6 | SSW 6 | SE 9 | SSE 5 | SE 9 | SE 8 | SSW 5 | SSW 6 |
| kJ | 22 | 23 | 23 | 23 | 22 | 22 | 10 | 15 | 15 | 26 | 24 | 15 | 14 | 13 | 13 | 7 | 7 | 4 | 3 | 3 | 3 | 3 | 48 | 60 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | E 13 | E 13 | ESE 9 | ESE 9 | SSE 5 | SSW 6 | SE 9 | E 12 | E 12 | SE 8 | SE 8 |
| kJ | 5 | 10 | 10 | 5 | 10 | 8 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 3 | 3 | 8 | 8 | 3 | 4 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | S 7 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | S 8 | E 13 | E 13 | — | — | ESE 13 | ESE 13 | E 13 | E 13 | SE 9 | E 12 | E 12 | ESE 12 | SE 12 | E 12 | E 12 |
| kJ | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 3 | 3 | — | — | 17 | 17 | 3 | 3 | 3 | 3 | 3 | 15 | 6 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 6 | S 6 | S 3 | SSW 3 | SSW 3 | S 5 | SSW 3 | SSW 5 | SSW 5 | SSW 6 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 13 | 20 | 1 | 1 | 1 | 5 | 3 | 17 | 36 | 114 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 76 | 16 | 16 | 51 | 16 | 16 | 18 | 51 | 54 | 16 | 16 | 16 | 16 | 18 | 18 | 76 | 76 | 54 | 76 | 77 | 76 | 491 | 27 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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