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Surf Forecasts

Rock Island surfForecast / Kanagawa / Japan

information circle48hr Weather and Surf, issued 2 pm Wednesday 02 Jul 2025 JST
Forecast update in hr  min  s Forecast 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
25.6° C
 (Which is 1.6°C warmer than normal for this time of year)

How big are the waves at Rock Island today?

The current surf forecast for Rock Island at 4PM is: 0.4m 10s primary swell from a Southeast direction and 0.2m 11s secondary swell from a East direction, 0.6m 4s secondary swell from a South-southwest direction (forecast issued at 02:00pm July 02). The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (02 Jul)--
Afternoon (02 Jul)1.5ft (0.4m)10s
Evening (02 Jul)1.5ft (0.4m)10s

Table - waves today at Rock Island. (Swell directed towards the surf break)

Hourly12 Days
Kanagawa Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.3
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.5
SE
0.5
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.6
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.3
SW
0.4
SW
0.4
SW
0.4
SW
0.5
SW
0.5
SW
0.4
SW
0.4
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.5
SW
0.5
SW
0.6
SSW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SSW
0.6
SSW
0.6
SSW
Period(s) (?)10101010101010101099999101010101091010999999988998999916151414141415151414141313131314141414141515
Wave
Graph
(?)Metric surfscale
Energy (?)3547363230272745475049432423474759696358636463606061603734343234262730283745658110499127128115142196184164156125134170177177214219196199160
Wind
(km/h)
15
SSW
20
S
20
S
15
SSW
10
S
10
SSW
10
SSW
10
S
20
S
20
S
25
S
20
S
20
S
15
S
15
S
15
S
20
S
25
S
25
S
15
S
10
S
5
SSW
0
N
10
ENE
10
SSE
20
S
15
S
15
SSE
10
SSE
10
SSE
0
SSE
5
SE
15
SSW
20
SSW
20
S
15
SSW
10
SSW
5
S
5
ENE
0
E
5
SSW
20
S
15
SSW
15
S
15
SSW
15
SSW
15
SSW
20
S
30
S
30
S
25
S
20
S
15
S
5
SSE
5
ENE
10
ENE
5
E
10
SSE
5
ENE
10
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononononononcross-
on		ononcross-
on		cross-
on		oncross-
on		ononononcross-
on		onononglasscross-
off		cross-
on		ononcross-
on		cross-
on		cross-
on		glassglassonononononcross-
on		glassglassonononononononononononcross-
on		cross-
on		cross-
on		glasscross-
off		glasscross-
on		glasscross-
off
High Tide
/ height (m)
10:07PM
1.34
9:49AM
1.17
10:41PM
1.34
11:18AM
1.11
11:19PM
1.34
1:03PM
1.10
12:00AM
1.35
2:44PM
1.16
12:46AM
1.37
4:00PM
1.24
1:35AM
1.40
4:56PM
1.32
2:25AM
1.43
5:40PM
1.38
Low Tide
/ height (m)
3:17PM
0.42
4:14AM
0.72
4:01PM
0.58
5:18AM
0.63
4:51PM
0.73
6:26AM
0.52
5:50PM
0.88
7:29AM
0.40
7:02PM
0.99
8:27AM
0.27
8:16PM
1.06
9:19AM
0.16
9:22PM
1.09
10:06AM
0.06
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Sunrise------4:31-------4:31-------4:31-------4:31-------4:33-------4:33-------4:33-----
Sunset--7:00-------7:00-------7:00-------7:00-------7:00-------6:59-------6:59-------6:59-
thunderstorm thunderstorm part cloudthunderstorm thunderstorm clearclearclearclearclearclearclearclearclearclearclearclearclearpart cloudpart cloudcloudthunderstorm part cloudpart cloudclearthunderstorm clearclearpart cloudpart cloudclearclearclearclearclearclearclearclearclearclearclearclearclearcloudpart cloudpart cloudcloudcloudcloudpart cloudclearclearpart cloudclearpart cloudpart cloudcloudcloudcloudrain showers
Rain (mm)
12-13----------------1---1---------------------------------1
Temp. °C262626262524252526262625252424252626262626252626282727262625252627272726262526272828272626262626262726262525252628282726
Feels °C (?)282828292827282827262625262526272726262829293130322930293029303029282827282830313128282728282727252626272729292932313129
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>

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

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