Surf Forecasts:
How big are the waves at Rock Island today (03 Aug):
- Morning surf: Morning surf (03 Aug, local time) - 2.5ft (0.7m), 16s period with SE swell.
- Afternoon surf: Afternoon surf (03 Aug, local time) - 3ft (0.9m), 16s period with SE swell.
- Evening surf: Evening surf (03 Aug, local time) - 3.5ft (1.1m), 18s period with SE swell.
The current surf forecast for Rock Island at 2PM is: 0.9m 16s primary swell from a Southeast direction and 0.1m 8s secondary swell from a South direction (forecast issued at 08:00am August 03). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Aug) | 2.5ft (0.7m) | 16s |
| Afternoon (03 Aug) | 3ft (0.9m) | 16s |
| Evening (03 Aug) | 3.5ft (1.1m) | 18s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 23°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||||||||
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 16 | SE 16 | SE 16 | SE 16 | SE 17 | SE 18 | SE 17 | SE 16 | SE 16 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 15 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 201 | 258 | 261 | 448 | 505 | 686 | 671 | 765 | 966 | 1094 | 1245 | 1611 | 1739 | 2355 | 2676 | 2831 | 3100 | 3413 | 3460 | 3860 | 3652 | 3022 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | off | off | off | off | off | off | off | cross-off | off |
High Tide | 7:38AM1.44m | 8:21PM1.45m | 8:29AM1.35m | 8:48PM1.44m | 9:29AM1.26m | |||||||||||||||||
Low Tide | 1:59PM0.44m | 2:29AM0.59m | 2:32PM0.59m | 3:17AM0.54m | 3:04PM0.75m | |||||||||||||||||
 |  |  |  | |  |  | | | | | | |  | | | | | | | | | |
 | 4:50 | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — |
 | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:42 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 24 | 26 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 27 | 25 | 23 | 23 | 23 | 23 | 23 | 25 | 28 | 27 | 26 |
Feels °C | 23 | 23 | 22 | 24 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 24 | 22 | 20 | 20 | 20 | 20 | 19 | 23 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SE 16 | SE 16 | SE 16 | SE 17 | SE 18 | SE 17 | SE 16 | SE 16 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | SSE 15 |
| kJ | 201 | 258 | 261 | 448 | 505 | 686 | 671 | 765 | 966 | 1094 | 1245 | 1611 | 1739 | 2355 | 2676 | 2831 | 3100 | 3413 | 3460 | 3860 | 3652 | 3022 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 22 | SE 21 | S 8 | — | E 14 | E 14 | E 14 | E 14 | E 14 | — | E 13 | E 13 | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 18 | 112 | 1 | — | 4 | 4 | 4 | 4 | 4 | — | 3 | 3 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 3 | NE 3 | NE 3 | NE 3 | ENE 3 | NE 3 | NE 3 | NNE 3 | NE 3 | NE 4 | — | — | ENE 9 | — | NNE 4 | NNE 3 | NNE 4 | — | — | — | — |
| kJ | 5 | 5 | 5 | 3 | 3 | 7 | 7 | 9 | 8 | 9 | 10 | — | — | 52 | — | 30 | 8 | 34 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 145 | 470 | 491 | 38 | 491 | 491 | 145 | 145 | 145 | 145 | 145 | 38 | 491 | 491 | 491 | 488 | 488 | 488 | 488 | 0 | 38 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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