Rock Island Surf Break
Lat Long: 35.29° N 139.55° E

Rock Island 48 hour detailed Surf Forecast

Weather Forecast for Rock Island

Issued: 8 pm 04 Jun 2026 (local time)

Forecast update in  hr  min

Today's Rock Island sea temperature is
21.7° C

Normal for this time of year

Rock Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Rock Island today (05 Jun):

  • Morning surf: Morning surf (05 Jun, local time) - 1ft (0.3m), 7s period with SSW swell.
  • Afternoon surf: Afternoon surf (05 Jun, local time) - 0.5ft (0.2m), 7s period with SSW swell.
  • Evening surf: Evening surf (05 Jun, local time) - 0.5ft (0.2m), 7s period with SSW swell.

The current surf forecast for Rock Island at 3AM is: 0.4m 8s primary swell from a South-southwest direction and 0.1m 8s secondary swell from a Southeast direction (forecast issued at 08:00pm June 04). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (JST) & DateWave HeightWave Period
Morning (05 Jun)1ft (0.3m)7s
Afternoon (05 Jun)0.5ft (0.2m)7s
Evening (05 Jun)0.5ft (0.2m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 10mm), heaviest on Sun afternoon. Warm (max 21°C on Thu night, min 16°C on Fri night). Winds decreasing (fresh winds from the ENE on Fri afternoon, light winds from the E by Sat night).

Thu
4
Friday
5
Saturday
6
Sunday
7
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
1
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
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
S
8
0.5
S
8
0.5
S
8
0.4
SSW
8
0.4
SSW
8
0.3
SSW
7
0.3
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
Wave Graph
Metric surfscale
Energy kJ
51
33
33
20
19
11
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
4
4
Wind (km/h)
15
NE
20
NNE
25
N
25
NNE
30
NNE
30
NE
25
ENE
30
ENE
35
ENE
30
NE
30
NE
30
NNE
25
NE
20
NE
15
NE
10
NE
10
E
10
SE
5
E
10
NE
15
NE
15
ENE
5
NNE
5
NE
Wind State
cross-off
off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
off
cross-off
High Tide
8:48PM1.34m
6:42AM1.36m
9:31PM1.32m
7:33AM1.29m
10:13PM1.29m
8:35AM1.20m
Low Tide
1:41AM0.99m
2:07PM0.07m
2:34AM0.96m
2:53PM0.19m
3:38AM0.90m
cloud
cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:52
6:53
 mm
2
Temp °C
21
21
20
19
18
18
20
20
18
17
17
17
16
17
19
21
21
19
19
18
18
19
19
19
Feels °C
19
18
16
14
13
13
16
15
13
12
12
13
12
13
16
19
20
18
20
17
17
18
19
20
Swell 1
Height (m)
Direction
Period (s)
0.6
S
8
0.5
S
8
0.5
S
8
0.4
SSW
8
0.4
SSW
8
0.3
SSW
7
0.3
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.1
S
7
0.1
S
7
0.1
S
7
0.1
S
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
Energy kJ
51
33
33
20
19
11
10
5
5
5
5
1
1
1
1
5
5
5
5
5
5
5
4
4
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
8
0.1
SE
8
0.1
SE
8
0.1
SE
8
0.1
SE
7
0.1
SE
7
0.1
SE
7
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.2
E
3
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
4
0.1
E
6
0.1
SE
10
0.1
SE
10
Energy kJ
3
3
2
2
2
2
2
5
5
5
1
5
5
5
5
5
5
4
1
1
4
4
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
12
0.1
SE
12
0.1
SE
7
0.1
E
7
0.1
SE
7
0.1
SE
12
0.1
E
7
0.1
E
5
0.1
SE
11
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
E
14
Energy kJ
6
6
5
5
5
5
5
2
1
2
5
1
1
4
4
4
4
4
4
Wind waves
Height (m)
Direction
Period (s)
0.3
NNE
2
0.4
NE
3
0.4
NE
3
0.4
ENE
3
0.4
ENE
3
0.4
ENE
3
0.4
ENE
3
0.3
NE
3
0.4
NE
3
0.3
NE
3
0.2
NNE
2
Energy kJ
1
3
3
3
4
3
4
1
2
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
3
3
2
2
1
1
1
1
1
4
4
4
3
1
1
3
Distance (km)
0
38
51
55
145
565
755
1425
491
491
491
491
487
491
491
64
64
61
55
55
55
565
16
1224
Best forecast wave conditions in Kanagawa
Rating
(10 max)
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
1
1
1
1
1
1
3
3
3
2
2
2
1
1
1
4
4
4
3
2
3
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
5
9
9
9
9
8
8
8
9
9
9
9
9
6
6
6
8
  • 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
How to use the Wavefinder

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