Surf Forecasts:
How big are the waves at Rock Island today (04 Jun):
- Morning surf: Morning surf (04 Jun, local time) - 3.5ft (1.0m), 10s period with S swell.
- Afternoon surf: Afternoon surf (04 Jun, local time) - 2.5ft (0.7m), 9s period with S swell.
- Evening surf: Evening surf (04 Jun, local time) - 1.5ft (0.5m), 8s period with S swell.
The current surf forecast for Rock Island at 1AM is: 1.5m 12s primary swell from a South-southwest direction and 0.9m 9s secondary swell from a South-southeast direction (forecast issued at 08:00pm June 03). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Jun) | 3.5ft (1.0m) | 10s |
| Afternoon (04 Jun) | 2.5ft (0.7m) | 9s |
| Evening (04 Jun) | 1.5ft (0.5m) | 8s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Wed night, min 16°C on Fri night). Winds decreasing (fresh winds from the NNE on Thu night, light winds from the S by Sat afternoon). | ||||||||||||||||||||||||
Wed 3 | Thursday 4 | Friday 5 | Saturday 6 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | S 13 | S 12 | SSW 12 | S 11 | S 10 | S 10 | SSW 9 | S 9 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SE 12 | SE 11 | SE 11 | SE 11 | SSW 8 | SSW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2364 | 1214 | 603 | 466 | 250 | 183 | 59 | 74 | 51 | 34 | 22 | 21 | 11 | 11 | 10 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 5 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-on |
High Tide | 8:06PM1.37m | 5:58AM1.42m | 8:48PM1.34m | 6:42AM1.36m | 9:31PM1.32m | 7:33AM1.29m | ||||||||||||||||||
Low Tide | 00:54AM1.00m | 1:24PM-0.02m | 1:41AM0.99m | 2:07PM0.07m | 2:34AM0.96m | 2:53PM0.19m | ||||||||||||||||||
 |  |  |  |  | |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — |
 | 6:51 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | 6:52 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 19 | 18 | 19 | 19 | 19 | 18 | 17 | 16 | 16 | 16 | 17 | 19 | 20 |
Feels °C | 17 | 18 | 15 | 15 | 15 | 16 | 15 | 16 | 17 | 16 | 15 | 12 | 12 | 13 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 14 | 17 | 20 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | SSW 12 | S 11 | S 10 | S 10 | SSE 8 | S 9 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SW 7 | S 7 | S 7 | S 7 | SSW 8 | SSW 7 |
| kJ | 2364 | 1214 | 603 | 466 | 250 | 183 | 50 | 74 | 51 | 34 | 22 | 21 | 11 | 11 | 10 | 5 | 5 | 5 | 2 | 1 | 1 | 1 | 6 | 5 |
Swell 2 Height (m) Direction Period (s) | NNW 4 | SSE 9 | SSE 9 | SE 8 | SSE 8 | ESE 9 | SSW 9 | — | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | — |
| kJ | 7 | 381 | 139 | 118 | 66 | 52 | 59 | — | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | — |
Swell 3 Height (m) Direction Period (s) | NNW 4 | — | — | — | ESE 9 | SE 13 | — | SSE 7 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 12 | SE 12 | SE 7 | E 7 | E 7 | E 7 | — | — | — | — | SE 11 |
| kJ | 10 | — | — | — | 54 | 7 | — | 18 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 2 | 1 | 1 | 1 | — | — | — | — | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNE 3 | NNE 3 | NE 3 | NE 3 | — | NNE 2 | NNE 3 | NNE 3 | NE 3 | NE 3 | ENE 3 | ENE 4 | ENE 4 | ENE 3 | NE 3 | NE 3 | NE 3 | NE 3 | — | — |
| kJ | — | — | — | — | 2 | 4 | 3 | 1 | — | 1 | 3 | 5 | 8 | 7 | 8 | 8 | 11 | 8 | 5 | 3 | 3 | 1 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 0 | 8 | 4 | 0 | 0 | 0 | 0 | 2 | 145 | 61 | 136 | 145 | 572 | 755 | 885 | 491 | 491 | 488 | 487 | 487 | 38 | 38 | 16 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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