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

Mainside Surf Forecast and Surf Report

Weather Forecast for Mainside

Issued: 8 am 05 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mainside sea temperature is
24.7° C

1.7°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.

Surf Forecasts:

Mainside surf forecast from 5 Jun 2026:

  • Best quality surf: Friday 12 Jun, 3AM (local time) - 6ft (1.8m), 6s period, NE swell with offshore winds.
  • Most powerful swell: Thursday 11 Jun, 6AM (local time) - 8ft (2.5m), 7s period, NE swell with 795 kJ wave energy.
  • Next surfable swell (1★+): Friday 12 Jun, 3AM (local time) - 6ft (1.8m), 6s period with NE 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 Friday (Jun 12) at 3AM. The primary swell is predicted to be 1.8m and 6s period. The wind is predicted to be 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 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Thursday (Jun 11) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Fri 12th Jun)6ft (1.8m) 6s
Best Surf 3AM (Fri 12th Jun)6ft (1.8m) 6s
Most Powerful 6AM (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 
16 DaysHourly
Print Table

Short Range Forecast

Heavy rain (total 60mm), heaviest during Sun afternoon. Warm (max 28°C on Fri morning, min 24°C on Sun afternoon). Winds increasing (calm on Fri night, fresh winds from the SSW by Sat night).

Days 4-6 Weather Summary

Heavy rain (total 162mm), heaviest during Tue night. Warm (max 27°C on Mon afternoon, min 21°C on Wed night). Winds increasing (calm on Mon night, strong winds from the NE by Wed night).

Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
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
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
W
7
0.3
W
7
0.2
E
9
0.5
NNE
6
0.2
E
9
0.3
E
9
0.2
ENE
13
0.2
ENE
12
0.2
ENE
12
0.5
N
7
0.5
N
7
0.6
N
6
0.5
N
5
0.2
ENE
11
0.6
N
6
0.2
ENE
11
0.3
NNW
6
1.1
NE
7
2.1
NE
7
1.1
SSW
9
1.7
NE
6
Wave Graph
Metric surfscale
Energy kJ
44
9
6
17
7
17
17
15
15
24
25
25
14
12
23
12
6
103
479
0
238
Wind (km/h)
25
SSW
20
SW
10
E
25
S
30
S
40
SSW
35
SSW
25
SSW
30
SSW
25
SW
25
SW
10
W
20
SW
25
SSW
25
SW
30
SW
15
NNE
30
E
25
N
30
NNE
20
ENE
Wind State
cross
cross-on
off
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross
on
cross-on
cross
cross
cross-on
cross
cross-off
cross-on
cross
cross-off
High Tide
9:09AM1.83m
10:49PM1.72m
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
Low Tide
4:03PM0.33m
4:21AM1.04m
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
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
heavy rain
rain showers
light rain
light rain
thunderstorm
thunderstorm
heavy rain
thunderstorm
thunderstorm
heavy rain
heavy rain
heavy rain
mod 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
—
—
7:19
—
—
7:20
—
—
7:20
—
—
7:20
—
—
7:21
—
—
7:21
—
 mm
1
8
10
6
1
4
3
18
9
4
1
14
5
12
57
30
14
25
47
9
19
Temp °C
28
27
26
27
27
26
26
25
25
26
27
26
25
25
26
26
25
25
23
22
25
Feels °C
29
28
29
28
28
25
25
26
25
27
28
29
27
26
25
26
29
27
23
20
23
Swell 1
Height (m)
Direction
Period (s)
0.7
W
7
0.3
W
7
1.1
SW
8
0.9
SW
8
0.2
NNE
5
0.2
E
10
0.2
ENE
13
0.2
ENE
12
0.2
NNW
6
0.5
N
7
0.5
N
7
0.6
SW
7
0.5
N
5
0.3
N
5
1.4
SW
7
1.1
SW
8
0.9
SSW
8
1.1
NE
7
1.7
SSW
9
1.1
SSW
9
0.6
SSW
10
Energy kJ
44
9
149
99
3
8
17
15
4
24
25
42
14
4
211
129
98
103
517
176
68
Swell 2
Height (m)
Direction
Period (s)
0.2
E
9
0.2
E
9
0.3
NNE
4
0.5
NNE
6
0.2
E
9
0.2
ENE
13
0.2
E
10
0.2
E
10
0.2
ENE
12
0.3
SE
6
0.2
ENE
12
0.6
N
6
0.2
ENE
12
0.2
ENE
11
0.2
ENE
11
0.2
ENE
11
0.3
NNW
6
0.1
NE
10
1.2
SSE
8
0.9
SSW
8
0.4
SSE
8
Energy kJ
7
7
3
17
6
17
7
8
15
5
14
25
13
12
12
12
6
4
161
123
19
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
11
0.1
SE
12
0.2
E
9
0.2
E
9
0.1
NE
13
0.3
E
9
0.1
SE
11
0.1
SE
11
0.2
NNW
5
0.2
ENE
12
0.1
E
10
0.5
S
6
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
SE
9
—
—
0.8
SSW
8
0.1
E
15
Energy kJ
4
5
6
6
7
16
4
4
2
14
2
20
2
2
2
2
3
—
—
76
4
Wind waves
Height (m)
Direction
Period (s)
0.8
SSW
6
1.1
SW
6
0.4
NE
4
1
S
5
1.5
SSW
5
2.4
SW
9
1.8
SW
7
2.2
SW
7
1.2
SW
8
1
SSW
8
1.2
SSW
7
1.2
SSW
7
1.1
SW
7
1.2
SSW
6
0.6
N
6
1
NNE
5
1.3
ENE
5
1.6
SSW
8
2.1
NE
7
1.5
NE
6
1.7
NE
6
Energy kJ
50
88
4
44
121
959
346
453
182
117
123
131
100
99
23
50
71
283
479
141
238
Nearest Offshore or Glassy
Kojima
Kyu Shu
Nagata
Kyu Shu
Corners
Okinawa
Fulung Beach
North
Lightning Bolt
North
Lightning Bolt
North
Kangjeong (Jejudo Island)
South Korea
Aha Rivermouth
Okinawa
Ko-Chan (Hedo Point)
Okinawa
Ikei Island
Okinawa
Ikei Island
Okinawa
Sesako Island
Okinawa
Aha Rivermouth
Okinawa
Yona Bay
Okinawa
Cape Toi
Kyu Shu
Yona Bay
Okinawa
Corners
Okinawa
Bowls
Okinawa
Tengan
Okinawa
Kudaka
Okinawa
Zampa (The Rock)
Okinawa
Rating
(10 max)
1
1
2
1
2
1
2
1
2
1
1
1
1
1
1
1
1
1
2
2
1
Distance (km)
660
650
10
600
608
608
765
66
73
29
29
28
66
59
652
59
10
10
15
36
1
Best forecast wave conditions in Okinawa
Steps
Aha Rivermouth
Ko-Chan (Hedo Point)
Rocky Point
Rocky Point
Ada
Rocky Point
Rocky Point
Ada
Sunset
Suicide Cliffs
Rocky Point
Suicide Cliffs
Turtles
Rating
(10 max)
2
1
2
1
1
1
1
1
1
1
4
3
2
2
Best forecast wave conditions in Japan
Unnamed
Kyu Shu
Hashikui Bay
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Yasuda Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Kuminatu
Chiba
Aoshima
Kyu Shu
Nunoshima
Shikoku
Niyodo Rivermouth
Shikoku
Matsube Bay
Chiba
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Keta Reef Oshima
Izu Islands
Niyodo Rivermouth
Shikoku
Uchiboso
Chiba
Kuminatu
Chiba
Suicide Cliffs
Okinawa
Rocky Point
Okinawa
Suicide Cliffs
Okinawa
Tainohama
Shikoku
Rating
(10 max)
1
3
2
2
1
1
3
5
4
3
4
2
1
2
1
1
1
4
3
2
2
Header Global
Cobblestones
Australia
Gas Bay
Australia
Cow Bombie
Australia
Cobblestones
Australia
Luna Park
Australia
Easter Reef
Australia
El Loa
Chile
Easter Reef
Australia
El Olon de Ilo
Peru
Easter Reef
Australia
La Paz
El Salvador
Playa Manzanilla
Mexico
Otago Peninsula - Allans Beach
New Zealand
White Rock - The Spit
New Zealand
Last Chance
New Zealand
Steep Point
Australia
Diners Beach
New Zealand
Papatowai
New Zealand
Easter Reef
Australia
Luna Park
Australia
Trial Harbour
Australia
Rating
(10 max)
5
6
9
8
9
9
8
7
8
8
9
6
9
9
9
6
5
7
8
7
6
  • 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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View detailed surf forecast for Mainside at:
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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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