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Surf Forecasts:

Rock Island surfForecast / Kanagawa / Japan

information circle48hr Weather and Surf, issued 2 pm Tuesday 10 Mar 2026 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
14.9° C
 (Which is 1.7°C colder than average for this time of year)

How big are the waves at Rock Island today?

The current surf forecast for Rock Island at 8PM is: 0.1m 6s primary swell from a West direction (forecast issued at 02:00pm March 10). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (10 Mar)--
Afternoon (10 Mar)0.5ft (0.1m)10s
Evening (10 Mar)0.5ft (0.1m)6s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM
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
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
E
0.1
S
0.1
S
0.1
W
0.2
E
0.1
S
0.1
S
0.1
S
0.1
E
0.1
S
0.1
SE
0.1
E
0.1
E
0.1
E
0.1
E
0.1
E
0.1
E
0.1
S
0.1
S
0.1
E
0.1
E
0.1
E
0.1
E
0.1
E
Period(s) (?)111011611666106410101616161616161616171818
Wave
Graph
(?)Metric surfscale
Energy kJ (?)324191112112255555555669
Wind
(km/h)
30
NNE
20
NE
20
NE
20
NE
15
NNE
15
NE
15
NE
15
NNE
10
ENE
5
SE
10
SSE
10
E
15
NE
20
N
20
NNE
15
NNE
10
NE
10
ENE
5
E
15
ESE
15
NNE
25
NNE
30
NNE
30
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off		cross-
off		offoffoffoffcross-
off		glasscross-
on		cross-
off		cross-
off		offoffoffoffcross-
off		cross-
off		cross-
off		offoffoffoff
High Tide
/ height (m)
10:15PM
1.07
8:31AM
1.28
12:02AM
1.02
9:09AM
1.23
2:22AM
1.06
Low Tide
/ height (m)
3:13PM
0.20
2:45AM
0.85
4:14PM
0.22
3:24AM
0.96
5:30PM
0.25
5:05AM
1.04
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Sunrise------5:58-------5:58-------5:56-
Sunset-5:44-------5:45-------5:45------
light rain
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
part cloud
part cloud
part cloud
cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
Rain (mm)
1-----------1-----------
Temp. °C4787665577866666891098866
Feels °C (?)-412110-1-133432101356431-2-3
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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