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

Mainside Surf Forecast and Surf Report

Weather Forecast for Mainside

Issued: 2 am 04 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mainside sea temperature is
25.3° C

1.1°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 4 Jun 2026:

  • Best quality surf: Sunday 7 Jun, 9PM (local time) - 3.5ft (1.1m), 10s period, NNE swell with cross-offshore winds.
  • Most powerful swell: Sunday 7 Jun, 6PM (local time) - 4.5ft (1.3m), 10s period, N swell with 360 kJ wave energy.
  • Next surfable swell (1★+): Sunday 7 Jun, 9PM (local time) - 3.5ft (1.1m), 10s period with NNE 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 Sunday (Jun 07) at 9PM. The primary swell is predicted to be 1.1m and 10s 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 1.3m 10s and forecast to arrive on Sunday (Jun 07) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Saturday (Jun 06) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 7th Jun)3.5ft (1.1m) 10s
Best Surf 9PM (Sun 7th Jun)3.5ft (1.1m) 10s
Most Powerful 6PM (Sun 7th Jun)4.5ft (1.3m) 10s

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 23mm), heaviest during Sat afternoon. Warm (max 28°C on Fri morning, min 24°C on Fri night). Winds increasing (calm on Fri night, near gales from the S by Sat night).

Days 4-6 Weather Summary

Heavy rain (total 95mm), heaviest during Mon night. Warm (max 27°C on Sun morning, min 22°C on Mon night). Mainly strong winds.

Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
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
1
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
Wave
Height (m)
Direction
Period (s)
0.9
SSW
5
1
SSW
5
1.1
SW
6
0.6
W
6
0.7
W
7
0.2
E
9
0.4
NNW
5
0.2
E
10
0.2
E
9
1.1
N
8
0.7
NNE
11
0.9
NNE
9
0.4
NNE
7
0.2
ENE
12
0.3
NE
12
0.8
N
6
0.7
N
6
0.4
NNE
6
1.1
N
7
0.8
NE
6
2
NNE
7
Wave Graph
Metric surfscale
Energy kJ
33
54
77
28
47
6
7
7
7
142
117
135
21
14
21
51
31
16
107
54
356
Wind (km/h)
30
SSW
30
SSW
25
SW
15
SW
20
WSW
15
E
20
SE
35
SSE
55
SSW
35
SW
20
WSW
10
ENE
15
SE
20
NNE
25
ENE
25
SSW
35
SSW
10
NW
20
SSW
30
SSW
30
S
Wind State
cross
cross
cross
cross
cross-on
off
cross-off
cross-off
cross
cross
cross-on
cross-off
cross-off
cross
cross-off
cross
cross
on
cross
cross
cross-off
High Tide
10:08PM1.74m
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
Low Tide
3:24PM0.26m
3:32AM1.04m
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
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
mod rain
heavy rain
mod rain
heavy rain
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<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>
—
7:17
—
—
7:19
—
—
7:19
—
—
7:20
—
—
7:20
—
—
7:20
—
—
7:21
—
 mm
—
—
5
2
4
3
3
5
1
3
4
6
19
10
34
10
5
4
6
5
5
Temp °C
26
26
27
28
28
26
26
25
26
27
26
25
26
23
24
27
27
26
27
26
26
Feels °C
26
27
28
29
30
31
28
23
21
27
28
29
27
24
26
27
26
26
29
26
28
Swell 1
Height (m)
Direction
Period (s)
0.4
N
7
0.3
N
6
0.2
E
10
0.6
S
6
0.6
S
6
1
WSW
9
0.8
SW
10
0.2
N
6
0.2
E
9
1.1
N
8
0.9
N
7
0.9
NNE
9
0.4
NNE
7
0.3
NNE
7
0.3
NE
12
0.9
SW
7
0.7
SW
7
0.4
NNE
6
1.4
SW
9
1
SSW
9
1.6
SSW
9
Energy kJ
15
7
7
29
29
154
110
3
7
142
88
135
21
9
21
67
47
16
287
165
441
Swell 2
Height (m)
Direction
Period (s)
0.2
E
10
0.2
E
10
0.1
N
6
0.6
W
6
0.6
SW
8
0.3
SSE
6
0.4
NNW
5
0.2
E
10
0.1
NE
13
1
SSW
8
0.9
SSW
7
0.7
SSW
7
0.2
ENE
12
0.2
ENE
12
0.2
N
6
0.8
N
6
0.7
N
6
0.2
ENE
11
0.2
ENE
11
0.3
NNW
5
0.2
ENE
10
Energy kJ
7
7
1
28
42
7
7
7
7
123
78
55
15
14
3
51
31
12
11
5
10
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.5
WSW
7
0.2
E
9
0.2
E
9
0.2
E
9
0.1
NE
13
0.1
SE
11
0.2
ENE
13
0.7
NNE
11
0.2
ENE
12
0.2
SSE
6
0.1
NE
10
0.1
E
9
0.3
SE
6
0.6
S
6
0.3
NNE
7
0.1
SE
9
0.1
NE
10
0.4
NE
10
Energy kJ
5
4
4
30
7
6
6
7
5
17
117
15
3
4
2
5
27
9
3
4
25
Wind waves
Height (m)
Direction
Period (s)
0.9
SSW
5
1
SSW
5
1.1
SW
6
—
0.7
W
7
—
0.9
SSE
4
3
SSW
8
2.2
SW
9
—
—
—
0.9
SSW
8
1.1
SSW
8
1.2
SW
6
—
1
S
6
3
SW
8
1.1
N
7
0.8
NE
6
2
NNE
7
Energy kJ
33
54
77
—
47
—
33
1177
698
—
—
—
100
135
109
—
79
1169
107
54
356
Nearest Offshore or Glassy
Fulung Beach
North
Fulung Beach
North
Lightning Bolt
North
Ko-Chan (Hedo Point)
Okinawa
Rocky Point
Okinawa
Corners
Okinawa
Lightning Bolt
North
Tawu
South
Lightning Bolt
North
Lightning Bolt
North
Tengan
Okinawa
Mainside
Okinawa
Steps
Okinawa
Aha Rivermouth
Okinawa
Corners
Okinawa
Yona Bay
Okinawa
Aha Rivermouth
Okinawa
Castles
Okinawa
Balls Bowls
Okinawa
Ko-Chan (Hedo Point)
Okinawa
Fulung Beach
North
Rating
(10 max)
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
Distance (km)
600
600
608
73
74
10
608
830
608
608
15
0
14
66
10
59
66
41
24
73
600
Best forecast wave conditions in Okinawa
Rocky Point
Rocky Point
Steps
Ada
Kudaka
Yona Bay
Ada
Marinas
Yona Bay
Ko-Chan (Hedo Point)
Ada
Rocky Point
Ko-Chan (Hedo Point)
Rating
(10 max)
1
1
1
2
2
1
1
1
1
2
1
2
2
Best forecast wave conditions in Japan
Nunoshima
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Nagata
Kyu Shu
Dragons Leaf
Kyu Shu
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Yasuda Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Amatu
Chiba
Aoura
Kyu Shu
Kaifu Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Mera
Chiba
Katagai
Chiba
Ko-Chan (Hedo Point)
Okinawa
Niijima - Habushiura
Izu Islands
Rocky Point
Okinawa
Ko-Chan (Hedo Point)
Okinawa
Udo Shrine
Kyu Shu
Rating
(10 max)
1
1
1
2
1
3
2
2
1
3
5
4
3
2
4
2
2
1
2
2
2
Header Global
Cobblestones
Australia
Asu
Indonesia
Cobblestones
Australia
Cobblestones
Australia
Injidup Carpark
Australia
Cow Bombie
Australia
Viri Inga O Tuki
Chile
Buchupureo
Chile
Easter Reef
Australia
Easter Reef
Australia
El Loa
Chile
Easter Reef
Australia
El Olon de Ilo
Peru
El Olon de Ilo
Peru
El Olon de Ilo
Peru
K59 and 61
El Salvador
Fishermans Point
El Salvador
Costa del Sol
El Salvador
Puerto Escondido
Mexico
Puerto Escondido
Mexico
Papatowai
New Zealand
Rating
(10 max)
5
4
5
5
5
9
9
7
9
9
8
6
8
7
6
7
6
5
7
9
5
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  • 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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