Surf Forecasts:
How big are the waves at Rock Island today (13 Jul):
- Afternoon surf: Afternoon surf (13 Jul, local time) - 3ft (0.9m), 12s period with SSW swell.
- Evening surf: Evening surf (13 Jul, local time) - 2.5ft (0.8m), 11s period with SSW swell.
The current surf forecast for Rock Island at 6PM is: 0.8m 12s primary swell from a South-southwest direction and 0.1m 10s secondary swell from a Southeast direction (forecast issued at 02:00pm July 13). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Jul) | - | - |
| Afternoon (13 Jul) | 3ft (0.9m) | 12s |
| Evening (13 Jul) | 2.5ft (0.8m) | 11s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Mon afternoon, min 25°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||||||
Mon 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | S 9 | S 9 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | S 5 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 210 | 206 | 158 | 145 | 109 | 95 | 93 | 91 | 64 | 59 | 39 | 39 | 38 | 38 | 36 | 34 | 61 | 106 | 28 | 31 | 35 | 29 | 31 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | glassy | glassy | glassy | on | on | on | on | on | on | on | on | on | on | on | cross-on | on | on | on | on | on | glassy |
High Tide | 5:37PM1.38m | 3:10AM1.46m | 6:12PM1.43m | 4:01AM1.49m | 6:44PM1.45m | 4:50AM1.51m | ||||||||||||||||||
Low Tide | 10:01AM0.08m | 10:13PM1.10m | 10:45AM0.02m | 10:59PM1.06m | 11:27AM-0.00m | 11:40PM1.01m | ||||||||||||||||||
 | | |  |  | |  |  | | | | | | | | | | | |  | | | | | |
 | — | — | — | — | — | 4:37 | — | — | — | — | — | — | — | 4:37 | — | — | — | — | — | — | — | 4:37 | — | — |
 | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | 6:55 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 27 | 28 | 27 | 26 | 26 | 25 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 |
Feels °C | 32 | 31 | 32 | 31 | 30 | 30 | 27 | 28 | 27 | 28 | 26 | 27 | 27 | 27 | 29 | 28 | 29 | 27 | 27 | 25 | 26 | 27 | 29 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SSW 9 | SSW 9 | SSW 8 |
| kJ | 210 | 206 | 158 | 145 | 109 | 95 | 93 | 91 | 64 | 59 | 39 | 39 | 38 | 38 | 36 | 34 | 4 | 4 | 3 | 3 | 3 | 8 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 12 | SE 12 | SE 12 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 14 | SE 9 | S 13 | SE 11 | E 11 | SE 9 | SE 9 | SE 9 |
| kJ | 9 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 6 | 6 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 5 | 2 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | ESE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 9 | S 15 | S 15 | S 15 | S 14 | S 14 | — | S 14 | S 14 | S 13 | SE 11 | S 13 | S 13 | S 13 | S 13 | S 13 |
| kJ | 16 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 3 | 4 | 4 | 4 | 4 | 4 | — | 4 | 4 | 4 | 5 | 4 | 3 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 3 | S 3 | SSW 3 | SSW 3 | SSW 3 | SSW 3 | S 3 | S 9 | S 9 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | S 5 |
| kJ | — | — | — | — | — | — | — | — | — | 1 | 5 | 4 | 3 | 2 | 2 | 2 | 61 | 106 | 28 | 31 | 35 | 29 | 31 | 22 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 18 | 14 | 0 | 14 | 14 | 10 | 27 | 18 | 76 | 76 | 92 | 38 | 76 | 76 | 76 | 92 | 77 | 77 | 77 | 27 | 470 | 228 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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