Surf Forecasts:
How big are the waves at Rock Island today (25 Jun):
- Morning surf: Morning surf (25 Jun, local time) - 1ft (0.3m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (25 Jun, local time) - 1.5ft (0.4m), 14s period with SW swell.
- Evening surf: Evening surf (25 Jun, local time) - 2.5ft (0.8m), 7s period with S swell.
The current surf forecast for Rock Island at 7AM is: 0.3m 9s primary swell from a South-southwest direction and 0.3m 10s secondary swell from a Southeast direction (forecast issued at 02:00am June 25). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Jun) | 1ft (0.3m) | 16s |
| Afternoon (25 Jun) | 1.5ft (0.4m) | 14s |
| Evening (25 Jun) | 2.5ft (0.8m) | 7s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 104mm), heaviest during Sat night. Warm (max 26°C on Fri afternoon, min 19°C on Thu morning). Winds increasing (calm on Thu night, strong winds from the SSW by Fri night). | ||||||||||||||||||||||||
Thursday 25 | Friday 26 | Saturday 27 | ||||||||||||||||||||||
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) | SE 10 | SE 10 | SE 10 | SW 16 | SW 15 | SW 14 | S 7 | S 7 | SW 13 | SW 13 | SW 14 | SW 13 | SSW 4 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SW 13 | SW 13 | SW 13 | S 9 | S 9 | S 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 17 | 16 | 17 | 38 | 34 | 50 | 63 | 61 | 80 | 80 | 91 | 78 | 50 | 179 | 165 | 117 | 93 | 62 | 30 | 28 | 27 | 343 | 291 | 180 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | off | off | off | cross-off | off | off | glassy | glassy | on | on | on | cross-on | on | cross-on | cross-on | on | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 11:58PM1.32m | 1:55PM1.11m | 00:40AM1.34m | 3:20PM1.19m | 1:24AM1.37m | 4:24PM1.27m | ||||||||||||||||||
Low Tide | 7:09AM0.46m | 6:41PM0.88m | 8:07AM0.33m | 7:50PM0.97m | 8:58AM0.20m | 8:55PM1.03m | ||||||||||||||||||
 |  |  |  | |  | | | | |  | | |  | | | | | | | | | |  | |
 | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — |
mm | — | 2 | 10 | 12 | 8 | 4 | 4 | 1 | 1 | 1 | — | — | — | — | — | 1 | 1 | 1 | 3 | 13 | 21 | — | 6 | 25 |
Temp °C | 22 | 21 | 20 | 19 | 20 | 20 | 19 | 20 | 19 | 19 | 20 | 21 | 25 | 26 | 24 | 23 | 23 | 24 | 21 | 21 | 21 | 22 | 21 | 21 |
Feels °C | 25 | 23 | 19 | 17 | 19 | 18 | 17 | 19 | 20 | 21 | 22 | 21 | 25 | 27 | 21 | 20 | 21 | 21 | 20 | 23 | 20 | 23 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SSW 9 | SW 16 | SSW 9 | S 8 | S 7 | S 7 | S 7 | S 7 | SW 14 | SW 13 | SE 10 | SE 11 | SW 12 | SW 12 | SW 11 | SW 11 | S 6 | S 6 | S 7 | S 9 | S 9 | S 9 |
| kJ | 17 | 16 | 17 | 38 | 17 | 21 | 63 | 61 | 46 | 24 | 91 | 78 | 4 | 4 | 37 | 21 | 20 | 18 | 30 | 19 | 22 | 343 | 291 | 180 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SE 10 | SSW 9 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 6 | SSE 7 | — | — | SW 15 | SW 14 | SSW 14 | SW 13 | SW 10 | SW 13 | SW 13 | SW 13 | SW 12 | SSW 13 |
| kJ | 10 | 9 | 16 | 16 | 34 | 50 | 45 | 61 | 80 | 80 | 14 | 15 | — | — | 8 | 32 | 18 | 28 | 15 | 28 | 27 | 26 | 6 | 55 |
Swell 3 Height (m) Direction Period (s) | SW 15 | S 8 | SW 16 | SE 10 | SSE 10 | SSW 6 | SE 10 | SSW 9 | SSW 9 | SSE 6 | SSE 7 | SE 10 | SE 18 | — | SE 10 | SE 10 | SE 10 | SE 10 | SW 13 | SSE 10 | SSE 10 | E 16 | E 16 | SW 12 |
| kJ | 9 | 4 | 10 | 16 | 10 | 6 | 4 | 8 | 8 | 16 | 18 | 4 | 12 | — | 4 | 4 | 4 | 4 | 28 | 9 | 9 | 5 | 5 | 6 |
Wind waves Height (m) Direction Period (s) | — | E 8 | — | NE 2 | NNE 3 | NNE 3 | N 3 | N 3 | — | — | — | SSW 6 | SSW 4 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | — | — | — | — | — | — |
| kJ | — | 6 | — | 2 | 5 | 3 | 5 | 2 | — | — | — | 22 | 50 | 179 | 165 | 117 | 93 | 62 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 64 | 51 | 38 | 0 | 0 | 38 | 7 | 0 | 0 | 0 | 0 | 142 | 228 | 488 | 92 | 136 | 92 | 54 | 38 | 0 | 0 | 0 | 0 | 38 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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