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 am 08 Jun 2026 (local time)

Forecast update in  hr  min

Today's Rock Island sea temperature is
21.3° C

1.0°C colder than average 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 (08 Jun):

  • Morning surf: Morning surf (08 Jun, local time) - 2.5ft (0.7m), 7s period with SE swell.
  • Afternoon surf: Afternoon surf (08 Jun, local time) - 3.5ft (1.0m), 8s period with S swell.
  • Evening surf: Evening surf (08 Jun, local time) - 2.5ft (0.8m), 8s period with SSE swell.

The current surf forecast for Rock Island at 3PM is: 1.0m 8s primary swell from a South direction and 0.6m 10s secondary swell from a South-southwest direction (forecast issued at 08:00am June 08). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (08 Jun)2.5ft (0.7m)7s
Afternoon (08 Jun)3.5ft (1.0m)8s
Evening (08 Jun)2.5ft (0.8m)8s

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 Mon night. Warm (max 22°C on Mon afternoon, min 18°C on Wed morning). Winds decreasing (fresh winds from the N on Mon morning, light winds from the ENE by Tue morning).

Monday
8
Tuesday
9
Wednesday
10
Thu
11
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
6 PM
9 PM
12 AM
3 AM
Rating
(10 max)
0
0
0
2
2
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
1
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
SSE
6
0.7
SE
7
0.7
SSW
9
1
S
8
0.9
SSE
8
0.8
SSE
8
0.7
SSE
8
0.6
S
8
0.7
S
7
0.6
S
7
0.5
S
7
0.4
SSE
7
0.4
S
6
0.3
SSE
6
0.5
S
8
0.6
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
9
0.6
S
9
Wave Graph
Metric surfscale
Energy kJ
21
44
92
137
115
81
65
41
51
35
23
15
13
8
37
48
32
31
33
33
33
36
39
56
Wind (km/h)
25
NNE
30
N
30
N
20
N
10
NNE
10
S
15
S
20
N
25
N
20
NNE
10
ENE
15
S
20
S
25
S
10
W
15
N
25
N
25
NNE
25
NNE
25
NNE
20
NNE
15
NNE
15
NNE
15
NNE
Wind State
off
off
cross-off
off
off
on
on
off
off
off
cross-off
cross-on
cross-on
cross-on
cross-on
off
off
off
off
off
off
off
off
off
High Tide
9:56AM1.11m
11:37PM1.27m
11:35AM1.07m
00:17AM1.28m
1:16PM1.09m
00:56AM1.30m
Low Tide
4:48AM0.82m
4:36PM0.47m
5:59AM0.70m
5:37PM0.61m
7:04AM0.56m
6:41PM0.73m
light rain
cloud
cloud
part cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
cloud
cloud
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:54
6:54
6:55
 mm
3
2
3
1
1
1
1
1
Temp °C
19
19
20
22
22
21
21
20
19
19
19
19
20
20
20
20
19
19
18
18
18
18
18
18
Feels °C
17
16
17
21
22
22
22
19
16
18
20
19
19
18
21
19
15
17
15
15
16
17
17
17
Swell 1
Height (m)
Direction
Period (s)
0.6
SSE
6
0.7
SE
7
0.7
SSW
9
1
S
8
0.9
SSE
8
0.8
SSE
8
0.7
SSE
8
0.6
S
8
0.7
S
7
0.6
S
7
0.5
S
7
0.4
SSE
7
0.2
SSW
8
0.3
SSE
6
0.5
S
8
0.6
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
9
0.6
S
9
Energy kJ
21
44
92
137
115
81
65
41
51
35
23
15
6
8
37
48
32
31
33
33
33
36
39
56
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
10
0.2
SSW
10
0.6
SE
7
0.6
SSW
10
0.6
SSW
10
0.4
SSW
10
0.4
SW
9
0.3
SSW
8
0.2
SSW
9
0.1
SW
9
0.3
SW
8
0.3
SW
8
0.1
S
10
0.2
SSW
8
0.3
E
8
0.3
E
8
0.2
S
10
0.2
E
8
0.3
SSE
6
0.3
SSE
6
0.4
SE
6
0.2
SSW
12
0.1
SE
10
Energy kJ
4
9
37
72
67
38
22
13
8
3
10
10
2
6
11
10
8
5
6
8
9
13
4
Swell 3
Height (m)
Direction
Period (s)
0.1
S
6
0.2
E
11
0.2
SSW
14
0.6
SSE
8
0.8
SSE
7
0.3
SSW
9
0.6
S
8
0.3
SW
9
0.4
SW
9
0.3
SSE
7
0.1
S
11
0.3
SSE
6
0.1
SW
10
0.1
SE
9
0.1
SE
9
0.2
E
8
0.1
SE
9
0.2
E
8
0.2
E
5
0.1
SE
9
0.2
E
7
0.2
SSW
12
0.3
SE
6
Energy kJ
1
9
21
47
61
16
41
13
29
9
2
8
4
3
3
5
3
5
2
3
4
14
5
Wind waves
Height (m)
Direction
Period (s)
0.4
NNE
3
0.4
NNE
3
0.3
NNE
3
0.4
S
3
0.2
NNE
2
0.2
NNE
3
0.4
S
6
0.3
S
3
0.3
S
3
0.3
NNE
2
0.4
NE
3
0.4
NE
3
0.5
NE
3
0.4
NE
3
0.2
NNE
3
0.2
NNE
2
Energy kJ
2
3
2
3
1
1
13
1
1
1
2
3
4
2
1
1
Nearest Offshore or Glassy
Rating
(10 max)
4
4
1
2
2
2
1
1
1
2
1
1
2
2
1
1
1
1
1
1
1
1
1
1
Distance (km)
228
145
17
0
0
16
27
0
7
51
38
38
76
76
7
0
51
38
38
38
38
38
0
0
Best forecast wave conditions in Kanagawa
Rating
(10 max)
1
2
2
2
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
3
2
4
3
3
3
3
2
2
1
2
2
2
2
2
2
1
2
2
2
2
2
Header Global
Rating
(10 max)
8
9
7
6
7
5
6
8
6
9
9
8
7
9
5
7
7
6
5
5
8
6
9
9
  • 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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