Surf Forecasts:
How big are the waves at Rock Island today (01 Sep):
- Morning surf: Morning surf (01 Sep, local time) - 1ft (0.3m), 8s period with SSW swell.
- Afternoon surf: Afternoon surf (01 Sep, local time) - 1ft (0.3m), 9s period with SSW swell.
- Evening surf: Evening surf (01 Sep, local time) - 1ft (0.3m), 8s period with SSW swell.
The current surf forecast for Rock Island at 4PM is: 0.3m 8s primary swell from a South-southwest direction and 0.1m 10s secondary swell from a Southeast direction (forecast issued at 08:00am September 01). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Sep) | 1ft (0.3m) | 8s |
| Afternoon (01 Sep) | 1ft (0.3m) | 9s |
| Evening (01 Sep) | 1ft (0.3m) | 8s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 16mm), heaviest on Thu morning. Warm (max 27°C on Tue afternoon, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||||||||
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 8 | E 12 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 8 | S 8 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 14 | 14 | 15 | 15 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 24 | 24 | 25 | 25 | 26 | 26 | 25 | 39 | 36 | 35 | 36 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-on | cross-on | glassy | glassy | glassy | glassy | glassy | on | on | on | cross-on | on | on | on | cross-on | cross-on | on | cross | cross-on |
High Tide | 7:33AM1.49m | 7:26PM1.50m | 8:22AM1.41m | 7:51PM1.49m | 9:19AM1.31m | 8:17PM1.47m | ||||||||||||||||
Low Tide | 1:29PM0.63m | 1:56AM0.40m | 1:58PM0.77m | 2:40AM0.39m | 2:27PM0.91m | |||||||||||||||||
 | | | |  |  |  | | | | |  | | | | | |  |  | | |  | |
 | 5:13 | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — |
 | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 2 | — | 2 |
Temp °C | 24 | 24 | 26 | 26 | 27 | 26 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 24 | 25 | 26 | 24 |
Feels °C | 25 | 25 | 28 | 28 | 30 | 29 | 28 | 28 | 29 | 30 | 30 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 26 | 28 | 29 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 9 | S 8 | S 8 |
| kJ | 14 | 14 | 15 | 15 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 24 | 24 | 25 | 25 | 26 | 26 | 25 | 39 | 36 | 35 | 36 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 13 | SE 6 |
| kJ | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 10 | 4 | 4 | 4 | 4 | 4 | 17 | 6 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 12 | E 11 | E 11 | E 11 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | SE 11 | E 10 | E 10 | E 10 | E 10 | S 14 | SE 10 | SSW 12 |
| kJ | 3 | 11 | 11 | 11 | 10 | 10 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 2 | 2 | 2 | 2 | 4 | 4 | 15 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 38 | 38 | 16 | 16 | 38 | 38 | 38 | 16 | 16 | 16 | 16 | 18 | 64 | 64 | 38 | 38 | 18 | 18 | 16 | 18 | 10 | 18 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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