Surf Forecasts:
How big are the waves at Rock Island today (29 Jul):
- Morning surf: Morning surf (29 Jul, local time) - 2.5ft (0.7m), 6s period with SSW swell.
- Afternoon surf: Afternoon surf (29 Jul, local time) - 2ft (0.6m), 7s period with SSW swell.
- Evening surf: Evening surf (29 Jul, local time) - 2ft (0.6m), 7s period with SSW swell.
The current surf forecast for Rock Island at 3PM is: 0.6m 7s primary swell from a South-southwest direction and 0.1m 9s secondary swell from a Southeast direction (forecast issued at 08:00am July 29). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Jul) | 2.5ft (0.7m) | 6s |
| Afternoon (29 Jul) | 2ft (0.6m) | 7s |
| Evening (29 Jul) | 2ft (0.6m) | 7s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 30°C on Wed afternoon, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | ||||||||||||||||||||
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) | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 7 | S 7 | SSW 7 | SSW 6 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 37 | 43 | 35 | 40 | 116 | 41 | 29 | 28 | 28 | 16 | 17 | 27 | 10 | 10 | 38 | 52 | 51 | 37 | 24 | 32 | 9 | 8 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | on | cross-on | cross-off | cross-off | off | off | glassy | on | on | cross-on | cross-off | off | off | off | off | glassy | on | cross-on | cross |
High Tide | 3:36AM1.48m | 6:14PM1.45m | 4:28AM1.51m | 6:41PM1.46m | 5:16AM1.53m | 7:07PM1.47m | ||||||||||||||||
Low Tide | 11:00AM0.06m | 11:15PM1.00m | 11:39AM0.07m | 11:52PM0.91m | 12:16PM0.11m | |||||||||||||||||
 | | | | |  |  |  |  | |  | | | | |  | | | | | | | |
 | 4:47 | — | — | — | — | — | — | 4:48 | — | — | — | — | — | — | — | 4:48 | — | — | — | — | — | — |
 | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 28 | 30 | 30 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 29 | 29 | 29 | 29 | 27 |
Feels °C | 30 | 31 | 31 | 31 | 32 | 32 | 30 | 30 | 29 | 31 | 29 | 30 | 30 | 33 | 32 | 30 | 29 | 32 | 33 | 30 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SE 10 | SSW 7 | S 4 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | S 7 | SE 10 | SSW 7 | SSW 6 |
| kJ | 37 | 43 | 35 | 40 | 41 | 41 | 29 | 28 | 28 | 16 | 17 | 4 | 10 | 2 | 38 | 52 | 51 | 37 | 24 | 4 | 9 | 8 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 12 | SE 10 | SSW 7 | SE 9 | SE 9 | SE 10 | SE 9 | SE 12 | S 8 | SE 10 | SSE 4 |
| kJ | 9 | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 3 | 3 | 6 | 4 | 10 | 3 | 3 | 4 | 3 | 5 | 1 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | S 8 | S 8 | SE 10 | SE 12 | SE 12 | S 8 | SE 12 | S 9 | S 11 | S 8 | SE 10 |
| kJ | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 1 | 1 | 4 | 6 | 6 | 1 | 6 | 1 | 3 | 1 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 7 | — | — | — | — | — | — | S 7 | S 3 | — | — | — | — | — | SSE 5 | S 7 | SSE 4 | — |
| kJ | — | — | — | — | 116 | — | — | — | — | — | — | 27 | 2 | — | — | — | — | — | 2 | 32 | 4 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 0 | 16 | 54 | 12 | 0 | 16 | 16 | 51 | 16 | 76 | 76 | 76 | 38 | 38 | 0 | 0 | 16 | 16 | 77 | 104 | 104 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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