
Rock Island Surf Forecast / Kanagawa / Japan
17 km away, 53 min ago

Best Forecast Surf Conditions for Rock Island this week:
The surf forecast for Rock Island over the next 7 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Feb 28) at 6AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.2m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Rock Island in the next 7 days are 3.0m 7s and forecast to arrive on Tuesday (Mar 02) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 7s period and expected on Wednesday (Mar 03) at 6AM.
Wave Type | Time (JST) & Date | Wave Height & Period |
---|---|---|
Next good surf (1 star+) | 6AM (Sun 28th Feb) | 1.5ft (0.5m) 10s |
Best Surf | 9PM (Tue 2nd Mar) | 4.5ft (1.3m) 10s |
Most Powerful | 6PM (Tue 2nd Mar) | 10ft (3.0m) 7s |
Table - best surf conditions forecast for Rock Island over the next 7 days.
Rating (10 max) |
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Swell Height Map |
Wave Height (m) & direction (?) |
Period(s) (?) |
Wave (?)Graph ![]() |
Energy (?) |
Wind (km/h) |
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy |
High Tide / height (m) |
Low Tide / height (m) |
Summary |
Rain (mm) |
High °C |
Low °C |
Chill °C (?) |
Sunrise |
Sunset |
Thu 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night |
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
E | E | E | SE | SE | SE | ESE | ESE | ESE | ESE | SE | SE | SE | SE | SSE | S | SSE | SE | SE | ESE | ESE | ESE | E |
10 | 11 | 11 | 6 | 7 | 8 | 8 | 9 | 10 | 9 | 10 | 10 | 9 | 10 | 5 | 7 | 10 | 10 | 10 | 10 | 10 | 11 | 11 |
2 | 2 | 2 | 6 | 34 | 17 | 7 | 35 | 51 | 9 | 23 | 44 | 43 | 74 | 123 | 695 | 416 | 120 | 102 | 63 | 63 | 88 | 89 |
S | SW | NE | NE | ENE | NNE | NE | NE | NNE | SW | SW | N | S | SW | S | S | NNE | NNE | ENE | E | ENE | S | SSW |
on | cross- on | off | off | cross- off | off | off | cross- off | off | on | on | cross- off | on | on | on | on | off | off | cross- off | cross- off | glass | on | on |
3:14PM 1.28 | 5:30AM 1.30 | 4:08PM 1.34 | 5:57AM 1.32 | 4:56PM 1.38 | 6:22AM 1.33 | 5:42PM 1.40 | 6:47AM 1.32 | 6:26PM 1.40 | 7:12AM 1.32 | 7:11PM 1.36 | 7:36AM 1.31 | 7:58PM 1.29 | 8:02AM 1.29 | 8:51PM 1.20 | ||||||||
10:26PM 0.03 | 10:46AM 0.78 | 11:06PM 0.02 | 11:22AM 0.68 | 11:44PM 0.05 | 11:56AM 0.58 | 12:20AM 0.11 | 12:31PM 0.48 | 12:53AM 0.20 | 1:07PM 0.40 | 1:27AM 0.32 | 1:46PM 0.34 | 1:59AM 0.45 | 2:28PM 0.31 | |||||||||
Note: the tide data above is for Sinzyuku Wan (Zusi), Kanagawa, Japan which is 2 km away. Surf properties and timing are calculated for Rock Island.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph | ||||||||||||||||||||||
Thu 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night |
some clouds | cloudy | cloudy | cloudy | cloudy | some clouds | clear | clear | clear | clear | some clouds | some clouds | some clouds | rain shwrs | mod. rain | mod. rain | some clouds | some clouds | clear | some clouds | some clouds | some clouds | some clouds |
- | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 6 | 9 | - | - | - | - | - | - | - |
10 | 11 | 10 | 12 | 9 | 6 | 7 | 6 | 5 | 8 | 10 | 11 | 14 | 15 | 17 | 19 | 16 | 7 | 9 | 8 | 10 | 12 | 13 |
8 | 8 | 8 | 11 | 6 | 5 | 7 | 3 | 3 | 7 | 10 | 10 | 14 | 14 | 16 | 18 | 5 | 5 | 9 | 7 | 8 | 11 | 13 |
7 | 8 | 7 | 10 | 6 | 1 | 2 | 2 | 5 | 5 | 8 | 11 | 12 | 14 | 15 | 18 | 14 | 2 | 6 | 5 | 9 | 10 | 11 |
- | - | 6:15 | - | - | 6:13 | - | - | 6:13 | - | - | 6:11 | - | - | 6:09 | - | - | 6:09 | - | - | 6:07 | - | - |
5:32 | - | - | 5:34 | - | - | 5:35 | - | - | 5:36 | - | - | 5:36 | - | - | 5:37 | - | - | 5:37 | - | - | 5:38 | - |
Short Range Forecast: Mostly dry. Cool air temperatures (max 12°C on Fri afternoon, min 3°C on Sat night). Winds decreasing (strong winds from the NE on Sat morning, calm by Sun morning). | Long Range Forecast: Moderate rain (total 18mm), heaviest on Tue afternoon. Cool air temperatures (max 19°C on Tue afternoon, min 5°C on Tue night). Winds decreasing (near gales from the SSW on Tue afternoon, calm by Thu morning). |
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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 7 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.