Rock Island surfForecast / Kanagawa / Japan

information circle48hr Weather and Surf, issued 8 pm Sunday 01 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
15.2° C
(Which is slightly cooler than normal)

How big are the waves at Rock Island today?

The current surf forecast for Rock Island at 3AM is: 0.4m 8s primary swell from a Southeast direction and 0.2m 3s secondary swell from a South-southeast direction, 0.4m 3s secondary swell from a Southeast direction (forecast issued at 08:00pm March 01). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (02 Mar)1.5ft (0.4m)8s
Afternoon (02 Mar)0.5ft (0.2m)8s
Evening (02 Mar)0.5ft (0.2m)8s

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


Updates in  hr  min  s Forecast update imminent
Sun
01
Monday
02
Tuesday
03
Wednesday
04
6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM
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
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.2
SSE
0.2
SSE
0.2
SSE
0.2
SSE
0.3
SE
0.3
SE
0.3
SE
0.3
SE
0.4
SE
0.5
SE
0.6
SE
0.6
SE
0.6
S
1.2
SSE
1.6
SSE
1.4
SSE
1.2
SSE
1.1
SSE
Period(s) (?)888888888887777888999999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)151616161615666699991429403956238391300213197
Wind
(km/h)
15
S
10
SSE
15
SSE
10
ESE
25
NNE
30
NNE
25
NNE
20
NE
20
NE
25
ENE
20
ENE
25
NE
30
NE
25
NE
30
NE
40
NNE
40
NNE
45
N
60
N
55
N
40
N
40
N
15
NNW
10
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
cross-
on
crossoffoffoffoffcross-
off
cross-
off
cross-
off
cross-
off
offoffoffoffoffcross-
off
cross-
off
offoffcross-
off
cross-
off
on
High Tide
/ height (m)
4:56AM
1.26
3:29PM
1.29
5:19AM
1.28
4:22PM
1.35
5:42AM
1.30
Low Tide
/ height (m)
9:46PM
0.10
10:10AM
0.80
10:29PM
0.08
10:45AM
0.68
11:07PM
0.10
11:19AM
0.55
Sun
01
Monday
02
Tuesday
03
Wednesday
04
Sunrise-----6:11-------6:09-------6:07--
Sunset-------5:37-------5:37-------5:38
part cloud
cloud
cloud
part cloud
light rain
cloud
light rain
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
mod rain
light rain
light rain
light rain
mod rain
light rain
cloud
clear
part cloud
Rain (mm)
----1-1------24753463---
Temp. °C13141313111010111110101010987533335911
Feels °C (?)912101264576554231-2-4-8-10-9-7-458
  • 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

Latest Updates

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.


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