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Rock Island ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 1.0
Crowds: 3.0

Overall: 2.7

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Based on 1 vote. Vote


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Rock Island Surf Forecast / Kanagawa / Japan

7 Day Weather and Surf, issued 2 pm Thursday 25 Feb 2021 JST
Forecast update in  hr  min  s Update imminent
Rock Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rock Island sea temperature is 14.6 °C (Statistics for 25 Feb 1981-2005 - mean: 16.3 max: 17.9 min: 14.5 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
Rock Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rock Island sea temperature is 14.6 °C (Statistics for 25 Feb 1981-2005 - mean: 16.3 max: 17.9 min: 14.5 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Kanagawa

  1. weather stationWind Update Continuing clean conditions at Rock Island (calm at Yokohama 17 km from Rock Island). no significant swell

    Rock Island
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17 km away, 53 min ago

Calm
4 km/h
W
9.3
14.6
Air / Water (°C)
Please reload the page to see if there are any updates.


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 TypeTime (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.

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
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
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
00000000100000001021100
T japan.htsgw.metric.6.cc23
T japan.htsgw.metric.24.cc23
T japan.htsgw.metric.48.cc23
T japan.htsgw.metric.72.cc23
T japan.htsgw.metric.96.cc23
T japan.htsgw.metric.120.cc23
T japan.htsgw.metric.144.cc23
T japan.htsgw.metric.168.cc23
0.1
E
0.1
E
0.1
E
0.3
SE
0.6
SE
0.4
SE
0.2
ESE
0.4
ESE
0.5
ESE
0.2
ESE
0.4
SE
0.5
SE
0.5
SE
0.6
SE
1.6
SSE
2.5
S
1.5
SSE
0.8
SE
0.7
SE
0.5
ESE
0.5
ESE
0.6
ESE
0.6
E
1011116788910910109105710101010101111
222634177355192344437412369541612010263638889
15
S
15
SW
20
NE
25
NE
20
ENE
40
NNE
35
NE
20
NE
10
NNE
15
SW
15
SW
5
N
20
S
15
SW
35
S
55
S
45
NNE
50
NNE
15
ENE
15
E
5
ENE
20
S
25
SSW
oncross-
on
offoffcross-
off
offoffcross-
off
offononcross-
off
ononononoffoffcross-
off
cross-
off
glassonon
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
Offshore winds at Rock Island blow from the NNE

Thu
25
Friday
26
Saturday
27
Sunday
28
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
partially cloudy
cloudy
cloudy
cloudy
cloudy
partially cloudy
clear
clear
clear
clear
partially cloudy
partially cloudy
partially cloudy
rain showers
moderate rain
moderate rain
partially cloudy
partially cloudy
clear
partially cloudy
partially cloudy
partially cloudy
partially cloudy
some cloudscloudycloudycloudycloudysome cloudsclearclearclearclearsome cloudssome cloudssome cloudsrain shwrsmod. rainmod. rainsome cloudssome cloudsclearsome cloudssome cloudssome cloudssome clouds
-------------369-------
1011101296765810111415171916798101213
88811657337101014141618559781113
78710612255811121415181426591011
--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).

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.


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.