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Rock Island surf Forecast / Kanagawa / Japan
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Best Forecast Surf Conditions for Rock Island this week:
The surf forecast for Rock Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Apr 19) at 12PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.2m and 11s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Rock Island in the next 12 days are 1.5m 7s and forecast to arrive on Wednesday (Apr 24) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Apr 24) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Fri 19th Apr) | 2ft (0.6m) 10s |
| Best Surf | 9AM (Wed 24th Apr) | 5ft (1.5m) 7s |
| Most Powerful | 9AM (Wed 24th Apr) | 5ft (1.5m) 7s |
Table - best surf conditions forecast for Rock Island over the next 12 days.
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tue 30 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 6 | 10 | 9 | 9 | 9 | 8 | 8 | 6 | 6 | 16 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 8 | 4 | 3 | 5 | 7 | 8 | 8 | 8 | 9 | 8 | 8 | 8 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 7 | 49 | 57 | 35 | 19 | 13 | 4 | 61 | 29 | 10 | 16 | 10 | 12 | 11 | 11 | 15 | 237 | 136 | 62 | 27 | 19 | 14 | 9 | 13 | 6 | 11 | 84 | 82 | 43 | 18 | 19 | 13 | 14 | 12 | 5 | 5 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | on | cross- off | off | on | on | cross | on | cross- off | off | cross- off | cross- off | cross- off | cross- on | cross- off | off | cross- off | off | cross- off | cross | cross- on | cross- on | on | cross- on | glass | on | cross | off | cross- off | off | off | off | off | off | on |
High Tide / height (m) | 2:35AM 1.19 | 1:07PM 1.07 | 3:05AM 1.22 | 2:30PM 1.15 | 3:31AM 1.25 | 3:32PM 1.24 | 3:56AM 1.28 | 4:23PM 1.32 | 4:19AM 1.31 | 5:10PM 1.37 | 4:43AM 1.34 | 5:54PM 1.39 | 5:07AM 1.37 | 6:39PM 1.38 | 5:32AM 1.38 | 7:25PM 1.35 | 5:58AM 1.39 | 8:15PM 1.29 | 6:26AM 1.37 | 9:11PM 1.23 | 6:57AM 1.33 | 10:17PM 1.19 | 7:34AM 1.26 | |||||||||||||
Low Tide / height (m) | 8:16AM 0.84 | 8:04PM 0.34 | 8:58AM 0.68 | 8:59PM 0.36 | 9:34AM 0.52 | 9:44PM 0.40 | 10:08AM 0.36 | 10:24PM 0.45 | 10:41AM 0.22 | 11:00PM 0.53 | 11:16AM 0.10 | 11:33PM 0.61 | 11:51AM 0.01 | 12:06AM 0.71 | 12:27PM -0.03 | 12:37AM 0.80 | 1:06PM -0.04 | 1:10AM 0.88 | 1:48PM -0.00 | 1:47AM 0.95 | 2:35PM 0.06 | 2:36AM 1.01 | 3:30PM 0.16 | |||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tue 30 | |||||||||||||||||||||||||
| Sunrise | - | 5:03 | - | - | 5:03 | - | - | 5:01 | - | - | 5:00 | - | - | 4:58 | - | - | 4:58 | - | - | 4:56 | - | - | 4:56 | - | - | 4:54 | - | - | 4:52 | - | - | 4:52 | - | - | 4:50 | - |
| Sunset | - | - | 6:16 | - | - | 6:17 | - | - | 6:19 | - | - | 6:20 | - | - | 6:21 | - | - | 6:21 | - | - | 6:22 | - | - | 6:22 | - | - | 6:23 | - | - | 6:24 | - | - | 6:25 | - | - | 6:25 |
 |  | |  |  |  |  | | |  | | | | | |  |  |  | | | | | | | | | | | | |  | | | | | | |
Rain (mm) | 13 | - | - | - | - | - | - | - | - | 5 | - | - | - | - | - | - | 4 | 10 | 11 | - | - | - | - | - | - | - | - | - | - | - | 7 | 9 | 4 | - | - | - |
| Temp. °C | 15 | 19 | 20 | 18 | 18 | 18 | 18 | 18 | 17 | 16 | 17 | 18 | 15 | 15 | 16 | 14 | 13 | 15 | 15 | 19 | 20 | 19 | 19 | 20 | 19 | 19 | 20 | 18 | 21 | 22 | 20 | 18 | 19 | 19 | 24 | 24 |
| Feels °C (?) | 11 | 17 | 17 | 17 | 15 | 14 | 17 | 17 | 14 | 16 | 12 | 13 | 12 | 13 | 14 | 10 | 11 | 14 | 8 | 16 | 20 | 20 | 16 | 17 | 17 | 17 | 18 | 17 | 19 | 20 | 17 | 14 | 14 | 15 | 23 | 24 |
Short Range Forecast: Moderate rain (total 13mm), heaviest on Thu night. Warm (max 20°C on Fri afternoon, min 15°C on Thu night). Winds decreasing (fresh winds from the N on Thu night, calm by Sun morning). | Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Wed afternoon. Very mild (max 18°C on Mon afternoon, min 13°C on Mon night). Mainly fresh winds. | Days 6-9 Weather Summary Moderate rain (total 11mm), heaviest on Wed night. Warm (max 20°C on Thu afternoon, min 14°C on Wed night). Winds decreasing (strong winds from the N on Wed night, calm by Thu night). | Long Range Forecast: Heavy rain (total 20mm), heaviest during Sun night. Warm (max 24°C on Tue morning, min 17°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the NNE by Mon afternoon). | |||||||||||||||||||||||||||||||||
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rock Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
View detailed surf forecast for Rock Island at:
surf-forecast.com
Information about the Rock Island Surf forecast
The above surf forecast table for Rock Island provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Rock Island can be found by selecting the local surf guide option on the grey menu. Our Rock Island surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Rock Island) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Rock Island may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Rock Island is 3 km (2 miles) from the city of Kamakura. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Kamakura. Kamakura has rooms for a wide range of budgets as well as car hire and transport links.
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