Mainside Surf Break
Lat Long: 26.44° N 127.71° E

Mainside Surf Forecast and Surf Report

Weather Forecast for Mainside

Issued: 2 am 06 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mainside sea temperature is
25.2° C

1.3°C colder than average for this time of year

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


Mainside surf forecast from 5 Jun 2026:

  • Best quality surf: Thursday 11 Jun, 6AM (local time) - 5.5ft (1.7m), 7s period, NNE swell with cross-offshore winds.
  • Most powerful swell: Thursday 11 Jun, 3AM (local time) - 8ft (2.5m), 7s period, NNE swell with 629 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 10 Jun, 9PM (local time) - 3.5ft (1.1m), 7s period with N swell.

Best Forecast Surf Conditions for Mainside this week:

The surf forecast for Mainside over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jun 10) at 9PM. The primary swell is predicted to be 1.1m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mainside in the next 16 days are 2.5m 7s and forecast to arrive on Thursday (Jun 11) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Saturday (Jun 06) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 10th Jun)3.5ft (1.1m) 7s
Best Surf 6AM (Thu 11th Jun)5.5ft (1.7m) 7s
Most Powerful 3AM (Thu 11th Jun)8ft (2.5m) 7s

Table - best surf conditions forecast for Mainside over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 19mm), heaviest on Sat morning. Warm (max 28°C on Sat morning, min 25°C on Sun afternoon). Winds decreasing (strong winds from the SSW on Sat night, light winds from the SSW by Sun night).

Days 4-6 Weather Summary

Heavy rain (total 311mm), heaviest during Thu morning. Warm (max 27°C on Tue morning, min 22°C on Thu morning). Winds decreasing (strong winds from the SSW on Tue night, calm by Thu morning).

Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
N
5
0.2
E
9
0.2
ENE
13
0.2
ENE
13
0.2
ENE
12
0.2
ENE
12
0.2
ENE
12
0.4
N
7
0.2
ENE
12
1.3
SSW
5
0.2
ENE
12
0.7
N
7
0.5
N
6
0.3
N
5
1.2
N
7
1.3
NNE
6
0.9
SSW
8
0.3
NNE
5
0.9
SSW
9
0.6
SSW
8
1.1
ENE
4
Wave Graph
Metric surfscale
Energy kJ
8
7
17
17
15
15
14
14
14
77
13
43
16
5
131
145
0
5
0
0
0
Wind (km/h)
25
S
35
S
40
SSW
35
SSW
30
SSW
20
SSW
20
S
35
SW
25
SSW
25
SSW
20
SW
30
SSW
10
NW
20
N
5
E
5
SW
35
NE
20
NE
30
NE
25
NE
20
ENE
Wind State
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross
cross
cross
cross
cross
cross-on
cross-on
glassy
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
9:56AM1.75m
11:37PM1.71m
10:55AM1.66m
00:31AM1.70m
12:13PM1.57m
1:30AM1.71m
1:49PM1.54m
2:28AM1.75m
3:22PM1.60m
3:24AM1.82m
4:38PM1.70m
4:15AM1.90m
5:40PM1.81m
Low Tide
4:49PM0.43m
5:22AM1.03m
5:43PM0.55m
6:35AM0.97m
6:46PM0.68m
7:52AM0.86m
7:57PM0.79m
9:05AM0.70m
9:09PM0.86m
10:08AM0.51m
10:15PM0.91m
11:03AM0.32m
11:13PM0.93m
thunderstorm
thunderstorm
rain showers
thunderstorm
rain showers
rain showers
light rain
part cloud
rain showers
thunderstorm
mod rain
thunderstorm
heavy rain
heavy rain
heavy rain
thunderstorm
heavy rain
heavy rain
light rain
light rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:35
5:35
5:35
5:35
5:35
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:19
7:20
7:20
7:20
7:21
7:21
7:22
 mm
4
3
1
3
2
1
2
3
2
8
58
16
26
94
73
22
12
1
2
15
Temp °C
28
27
26
27
26
25
26
26
26
27
25
26
25
24
25
24
22
22
23
23
22
Feels °C
29
26
23
27
26
27
27
25
27
27
27
26
29
26
27
29
19
21
21
21
23
Swell 1
Height (m)
Direction
Period (s)
0.4
N
5
0.2
N
5
0.2
ENE
13
0.2
ENE
13
0.2
ENE
12
0.3
NNW
6
0.3
N
6
0.4
N
7
0.3
N
6
0.4
N
6
0.3
N
6
0.7
N
7
0.5
N
6
1.6
SW
7
1.2
N
7
1
SSW
8
0.9
SSW
8
0.7
SSW
8
0.9
SSW
9
0.6
SSW
8
0.3
S
7
Energy kJ
8
2
17
17
15
6
6
14
7
9
6
43
16
262
131
143
111
59
136
54
8
Swell 2
Height (m)
Direction
Period (s)
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
10
0.2
E
10
0.2
ENE
12
0.2
ENE
12
0.2
ENE
12
0.3
SE
6
0.2
ENE
12
0.2
ENE
12
0.2
ENE
11
0.2
ENE
11
0.3
N
5
0.1
NE
10
0.9
SW
8
0.7
SW
8
0.3
NNE
5
0.1
SE
8
0.6
SSW
8
0.3
SW
8
Energy kJ
6
6
7
8
8
15
14
14
5
14
13
12
12
5
4
98
70
5
2
47
11
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
12
0.1
NE
13
0.1
SE
11
0.1
SE
11
0.1
SE
10
0.2
E
10
0.1
E
10
0.1
E
10
0.2
ENE
12
0.1
E
9
0.1
E
9
0.1
E
9
0.1
SE
9
0.1
NE
10
0.2
NNW
5
0.1
SE
8
0.1
SE
8
Energy kJ
5
7
4
5
4
8
2
2
14
2
2
2
3
4
2
2
3
Wind waves
Height (m)
Direction
Period (s)
1.3
SSW
7
1.5
SSW
9
3
SW
9
1.8
SW
8
1.6
SW
8
1.1
SW
8
1
SSW
8
1.3
SSW
7
0.9
SW
7
1.3
SSW
5
1.7
SW
7
1.3
SW
7
1.4
SW
7
2
SSW
7
1.5
SSW
8
1.3
NNE
6
1.1
NE
5
0.8
ENE
4
1.1
NE
5
0.9
ENE
5
1.1
ENE
4
Energy kJ
169
329
1414
403
333
151
113
173
67
77
253
179
173
418
240
145
57
22
51
49
49
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
608
608
600
830
683
66
650
765
66
66
66
622
73
735
0
0
796
10
650
10
13
Best forecast wave conditions in Okinawa
Rating
(10 max)
1
2
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
1
3
5
9
2
5
2
1
1
1
1
1
1
1
2
1
1
1
1
Header Global
Rating
(10 max)
9
8
9
6
8
7
8
7
6
9
5
7
6
5
9
9
9
7
6
7
8
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Mainside Surf forecast

The above surf forecast table for Mainside provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mainside can be found by selecting the local surf guide option on the grey menu. Our Mainside surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Mainside) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Mainside may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Mainside is 11 km (7 miles) from the city of Ishikawa. If you plan a holiday in Okinawa, look for hotels and other accommodation in Ishikawa. Ishikawa has rooms for a wide range of budgets as well as car hire and transport links.

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