Surf Forecasts:
How big are the waves at Rock Island today (09 Jul):
- Morning surf: Morning surf (09 Jul, local time) - 5ft (1.5m), 14s period with S swell.
- Afternoon surf: Afternoon surf (09 Jul, local time) - 4.5ft (1.4m), 14s period with SSE swell.
- Evening surf: Evening surf (09 Jul, local time) - 4.5ft (1.4m), 14s period with S swell.
The current surf forecast for Rock Island at 12PM is: 1.4m 14s primary swell from a South-southeast direction and 0.6m 18s secondary swell from a South direction (forecast issued at 08:00am July 09). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Jul) | 5ft (1.5m) | 14s |
| Afternoon (09 Jul) | 4.5ft (1.4m) | 14s |
| Evening (09 Jul) | 4.5ft (1.4m) | 14s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 25°C on Thu afternoon, min 23°C on Thu morning). Winds increasing (light winds from the S on Thu morning, fresh winds from the S by Sat afternoon). | ||||||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sun 12 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SSE 13 | S 14 | SSE 14 | SSE 14 | SSE 13 | S 14 | S 15 | S 15 | S 14 | S 15 | S 17 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 454 | 912 | 811 | 788 | 507 | 780 | 1070 | 1208 | 902 | 1371 | 2097 | 2141 | 2062 | 2107 | 2133 | 1455 | 2485 | 2605 | 2842 | 2437 | 2408 | 2071 | 1862 | 1839 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | cross-on |
High Tide | 12:55PM1.10m | 11:41PM1.36m | 2:42PM1.15m | 00:30AM1.37m | 4:01PM1.24m | 1:22AM1.40m | ||||||||||||||||||
Low Tide | 6:12AM0.50m | 5:31PM0.91m | 7:19AM0.39m | 6:45PM1.02m | 8:19AM0.28m | 8:06PM1.09m | ||||||||||||||||||
 | | | | |  | | | | | | | | | | |  | | | |  |  | |  | |
 | 4:33 | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:35 |
 | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:58 | — | — | 6:58 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 23 | 23 | 24 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 24 |
Feels °C | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 26 | 25 | 24 | 25 | 24 | 25 | 24 | 24 | 25 | 24 | 23 | 23 | 24 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SSE 13 | S 14 | SSE 14 | SSE 14 | SSE 13 | S 14 | S 15 | S 15 | S 14 | S 15 | S 17 | S 16 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 |
| kJ | 454 | 912 | 811 | 788 | 507 | 780 | 1070 | 1208 | 902 | 1371 | 2097 | 2141 | 2062 | 2107 | 2133 | 1455 | 2485 | 2605 | 2842 | 2437 | 2408 | 2071 | 1862 | 1839 |
Swell 2 Height (m) Direction Period (s) | S 15 | ESE 8 | S 18 | S 18 | S 15 | S 16 | ESE 8 | SSW 17 | SSW 18 | ESE 9 | — | — | SSW 18 | SE 10 | SE 10 | SSW 18 | — | — | — | — | — | — | — | SE 10 |
| kJ | 446 | 25 | 224 | 300 | 470 | 188 | 24 | 702 | 578 | 26 | — | — | 938 | 58 | 82 | 803 | — | — | — | — | — | — | — | 45 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | — | ESE 8 | — | ESE 8 | S 18 | — | ESE 8 | ESE 8 | ESE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 26 | — | 20 | — | 22 | 171 | — | 22 | 12 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 4 | S 4 | SSW 4 | SSW 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 24 | 28 | 25 | 19 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 18 | 18 | 64 | 76 | 14 | 14 | 14 | 14 | 18 | 76 | 77 | 77 | 76 | 38 | 14 | 14 | 77 | 77 | 77 | 77 | 27 | 14 | 12 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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