Surf Forecasts:
How big are the waves at Rock Island today (26 Jul):
- Morning surf: Morning surf (26 Jul, local time) - 0.5ft (0.1m), 15s period with SE swell.
- Afternoon surf: Afternoon surf (26 Jul, local time) - 1ft (0.3m), 11s period with SE swell.
- Evening surf: Evening surf (26 Jul, local time) - 1ft (0.3m), 11s period with SE swell.
The current surf forecast for Rock Island at 7AM is: 0.1m 15s primary swell from a Southeast direction and 0.2m 7s secondary swell from a South direction (forecast issued at 02:00am July 26). An open ocean swell of 0.2m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Jul) | 0.5ft (0.1m) | 15s |
| Afternoon (26 Jul) | 1ft (0.3m) | 11s |
| Evening (26 Jul) | 1ft (0.3m) | 11s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 16mm), heaviest on Sun night. Warm (max 28°C on Mon afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||||||||||
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 | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SSE 15 | SE 10 | SE 15 | SE 15 | SE 15 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 8 | SE 10 | SSW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 13 | SSW 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 22 | 16 | 9 | 8 | 8 | 18 | 21 | 20 | 20 | 20 | 16 | 16 | 16 | 16 | 16 | 22 | 16 | 24 | 15 | 15 | 15 | 15 | 27 | 14 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | glassy | on | on | on | glassy | off | off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross-off | cross-off | cross-off | glassy | on | cross-on | on | cross-off |
High Tide | 00:29AM1.39m | 4:34PM1.30m | 1:35AM1.40m | 5:13PM1.37m | 2:38AM1.44m | 5:46PM1.42m | ||||||||||||||||||
Low Tide | 8:36AM0.25m | 8:38PM1.16m | 9:30AM0.16m | 9:45PM1.13m | 10:17AM0.10m | |||||||||||||||||||
 | |  | |  |  |  | | | |  | | | | | | |  | | | | | |  | |
 | — | 4:45 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:49 | — |
mm | 2 | 1 | 1 | 1 | — | — | — | 3 | 2 | 2 | 4 | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 1 | — |
Temp °C | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 26 | 24 | 24 | 25 | 27 | 28 | 27 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 27 | 26 |
Feels °C | 28 | 28 | 29 | 29 | 30 | 29 | 30 | 31 | 29 | 24 | 25 | 26 | 29 | 30 | 30 | 28 | 28 | 27 | 26 | 29 | 28 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | S 7 | SE 15 | SE 11 | SE 11 | SE 11 | S 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SE 10 | SSW 8 |
| kJ | 15 | 16 | 4 | 8 | 5 | 18 | 18 | 6 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 22 | 14 | 24 | 15 | 15 | 15 | 15 | 15 | 14 |
Swell 2 Height (m) Direction Period (s) | SSE 15 | SE 15 | SE 15 | S 7 | SE 15 | SE 15 | SSE 14 | SE 11 | SE 11 | 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 13 | SSE 3 |
| kJ | 22 | 9 | 9 | 4 | 8 | 8 | 21 | 18 | 18 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 7 | 1 |
Swell 3 Height (m) Direction Period (s) | ESE 3 | S 8 | SE 9 | SE 11 | SE 9 | S 7 | S 8 | SSE 14 | SSE 14 | SSE 14 | SE 14 | SE 14 | SE 14 | SE 14 | SE 14 | SE 13 | SSE 3 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SSE 10 |
| kJ | 1 | 5 | 3 | 5 | 3 | 4 | 5 | 20 | 20 | 20 | 8 | 8 | 8 | 8 | 7 | 7 | 1 | 7 | 7 | 7 | 7 | 7 | 27 | 9 |
Wind waves Height (m) Direction Period (s) | — | E 4 | E 4 | — | S 7 | S 2 | S 2 | S 2 | — | — | — | — | — | — | SSE 3 | SE 3 | ESE 3 | — | — | E 8 | E 8 | — | SSW 8 | — |
| kJ | — | 1 | 1 | — | 4 | 1 | 1 | 1 | — | — | — | — | — | — | 1 | 2 | 2 | — | — | 5 | 10 | — | 24 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 16 | 16 | 38 | 16 | 18 | 18 | 77 | 16 | 0 | 38 | 51 | 51 | 16 | 16 | 18 | 38 | 51 | 38 | 38 | 16 | 18 | 18 | 14 | 16 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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