Surf Forecasts:
How big are the waves at Rock Island today (19 Oct):
- Morning surf: Morning surf (19 Oct, local time) - 3ft (0.9m), 4s period with SSW swell.
- Afternoon surf: Afternoon surf (19 Oct, local time) - 3.5ft (1.1m), 5s period with SSW swell.
- Evening surf: Evening surf (19 Oct, local time) - 3ft (0.9m), 5s period with SSW swell.
The current surf forecast for Rock Island at 1PM is: 1.0m 4s primary swell from a South-southwest direction and 0.1m 10s secondary swell from a Southeast direction, 0.1m 8s secondary swell from a Southeast direction (forecast issued at 08:00am October 19). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Oct) | 3ft (0.9m) | 4s |
| Afternoon (19 Oct) | 3.5ft (1.1m) | 5s |
| Evening (19 Oct) | 3ft (0.9m) | 5s |
Table - waves today at Rock Island. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 21°C on Wed night). Winds increasing (light winds from the N on Tue afternoon, strong winds from the SW by Wed afternoon). | ||||||||||||||||||||||
Monday 19 | Tuesday 20 | Wednesday 21 | ||||||||||||||||||||
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 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | S 5 | SSE 16 | SSE 17 | SSE 14 | SSW 5 | SSE 15 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | S 16 | S 15 | S 14 | SSW 6 | SSW 7 | S 17 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 15 | 24 | 41 | 56 | 64 | 43 | 34 | 50 | 55 | 77 | 72 | 72 | 156 | 195 | 189 | 167 | 172 | 210 | 260 | 289 | 360 | 379 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | cross-on | on | cross-on | on | cross-on | cross-off | off | cross-off | cross-on | cross-on | on | on | on | on | on | on |
High Tide | 12:34PM1.29m | 9:24PM1.27m | 1:37PM1.31m | 11:27PM1.21m | 2:18PM1.34m | |||||||||||||||||
Low Tide | 4:20AM0.38m | 5:05PM1.16m | 5:37AM0.46m | 7:03PM1.07m | 6:55AM0.51m | 8:07PM0.93m | ||||||||||||||||
 | |  | |  | |  | | |  | | |  | | | | | | | | | | |
 | 5:50 | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | 5:01 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 5:00 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 26 | 25 | 24 | 23 | 23 | 23 | 24 | 25 | 26 | 26 | 25 |
Feels °C | 18 | 18 | 20 | 20 | 21 | 21 | 22 | 22 | 22 | 22 | 25 | 27 | 25 | 25 | 24 | 23 | 21 | 21 | 21 | 21 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 10 | SE 10 | SE 10 | SE 10 | SSE 9 | SE 9 | SSE 16 | SSE 17 | SSE 14 | SE 13 | SE 12 | S 6 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | S 15 | S 14 | S 14 | S 14 | S 17 |
| kJ | 2 | 4 | 4 | 4 | 4 | 8 | 12 | 50 | 55 | 77 | 40 | 72 | 41 | 195 | 189 | 167 | 125 | 210 | 260 | 184 | 306 | 377 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 7 | SE 8 | S 17 | SE 16 | SSE 16 | SSE 15 | SE 8 | SSE 13 | SSE 16 | SSE 15 | SSE 15 | SSE 13 | S 6 | S 5 | S 16 | S 16 | SSE 12 | SSE 11 | S 18 | S 18 | S 13 |
| kJ | 4 | 2 | 2 | 6 | 10 | 24 | 21 | 11 | 17 | 52 | 45 | 71 | 156 | 30 | 14 | 130 | 172 | 121 | 70 | 161 | 165 | 123 |
Swell 3 Height (m) Direction Period (s) | SE 10 | E 9 | S 18 | SE 10 | SSE 16 | SSE 15 | S 18 | S 11 | SE 8 | SSE 16 | — | — | S 19 | S 18 | S 17 | — | S 12 | — | S 17 | SSE 11 | — | SSE 10 |
| kJ | 15 | 2 | 6 | 15 | 25 | 21 | 24 | 2 | 11 | 51 | — | — | 30 | 57 | 93 | — | 75 | — | 197 | 46 | — | 41 |
Wind waves Height (m) Direction Period (s) | S 4 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | S 5 | SSW 5 | S 5 | SSW 5 | SSW 5 | S 6 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 7 | SSW 7 |
| kJ | 14 | 24 | 41 | 56 | 64 | 43 | 34 | 27 | 27 | 32 | 72 | 66 | 55 | 56 | 21 | 20 | 40 | 86 | 193 | 289 | 360 | 379 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 92 | 142 | 565 | 491 | 38 | 27 | 27 | 27 | 27 | 142 | 12 | 0 | 0 | 0 | 12 | 27 | 136 | 491 | 518 | 491 | 470 | 487 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||
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