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

Mainside Surf Forecast and Surf Report

Weather Forecast for Mainside

Issued: 8 am 03 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mainside sea temperature is
25.7° C

Slightly cooler than normal

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


Mainside surf forecast from 3 Jun 2026:

  • Best quality surf: Wednesday 10 Jun, 12AM (local time) - 5ft (1.6m), 6s period, NE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 10 Jun, 12PM (local time) - 6.5ft (2.0m), 6s period, ENE swell with 322 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 10 Jun, 12AM (local time) - 5ft (1.6m), 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 Wednesday (Jun 10) at 12AM. The primary swell is predicted to be 1.6m and 6s 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 2.0m 6s and forecast to arrive on Wednesday (Jun 10) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Sunday (Jun 07) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 10th Jun)5ft (1.6m) 6s
Best Surf12AM (Wed 10th Jun)5ft (1.6m) 6s
Most Powerful12PM (Wed 10th Jun)6.5ft (2.0m) 6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 36mm), heaviest during Fri night. Warm (max 28°C on Fri morning, min 24°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 49mm), heaviest during Mon afternoon. Warm (max 28°C on Sat morning, min 22°C on Mon afternoon). Winds increasing (light winds from the SE on Sat morning, strong winds from the SW by Sun morning).

Wednesday
3
Thursday
4
Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
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)
1
N
9
0.9
N
8
0.7
N
8
0.8
SSW
4
0.9
SW
4
0.9
SW
6
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
ENE
14
0.2
ENE
13
0.7
WNW
5
0.7
N
10
0.5
N
7
0.4
NNE
6
0.3
NE
12
0.5
NNE
4
0.1
E
9
1.6
NE
6
Wave Graph
Metric surfscale
Energy kJ
148
112
55
17
29
60
7
7
6
6
6
19
17
29
90
26
15
22
11
2
178
Wind (km/h)
20
SW
20
SW
20
SSW
25
SSW
25
SSW
20
SSW
25
SW
20
SW
10
E
10
SE
30
S
35
S
45
SSW
45
SSW
25
WSW
15
N
15
NNE
20
ENE
25
ENE
35
E
10
NE
Wind State
cross
cross
cross
cross
cross
cross
cross-on
cross
off
off
cross-off
cross-off
cross
cross
cross-on
cross
cross
cross-off
cross-off
off
cross-off
High Tide
9:31PM1.75m
8:29AM1.88m
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
Low Tide
2:49PM0.21m
2:51AM1.04m
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
thunderstorm
clear
clear
rain showers
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
part cloud
clear
rain showers
heavy rain
mod rain
light rain
heavy rain
light 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>
7:17
7:17
7:19
7:19
7:20
7:20
7:20
 mm
2
1
2
9
7
15
2
2
3
7
3
24
8
4
15
4
Temp °C
26
26
26
27
26
26
28
28
26
28
28
26
26
26
26
25
23
23
22
23
24
Feels °C
27
28
29
28
27
28
30
30
29
30
28
26
24
24
26
27
24
24
22
23
27
Swell 1
Height (m)
Direction
Period (s)
1
N
9
0.9
N
8
0.7
N
8
0.4
N
7
0.3
N
6
0.2
E
10
0.2
E
9
0.3
SW
8
1
WSW
8
0.9
SW
8
0.3
N
6
0.2
ENE
14
0.2
ENE
13
1.2
SSW
8
0.8
SSW
7
0.7
SW
8
0.4
NNE
6
0.8
SW
9
0.6
SW
7
1
S
7
0.9
SSW
8
Energy kJ
148
112
55
15
7
7
7
11
143
88
5
19
17
161
70
74
12
109
41
106
113
Swell 2
Height (m)
Direction
Period (s)
0.5
SSE
7
0.4
SSE
7
0.3
SSE
6
0.2
E
10
0.2
E
10
0.2
N
6
0.1
SE
11
0.2
E
9
0.3
SSE
6
0.3
N
4
0.2
E
9
0.2
E
10
0.2
E
9
0.7
WNW
5
0.7
N
10
0.5
N
7
0.4
SE
6
0.4
SE
6
0.6
S
6
0.3
SW
9
0.1
SE
9
Energy kJ
28
18
8
7
7
3
4
7
7
3
6
8
7
29
90
26
10
10
25
12
3
Swell 3
Height (m)
Direction
Period (s)
0.2
E
10
0.2
E
10
0.2
E
10
0.1
SE
11
0.1
SE
11
0.1
SE
10
0.1
N
5
0.1
SE
12
0.2
E
9
0.2
E
9
0.1
SE
11
0.1
N
6
0.2
ENE
13
0.5
WNW
5
0.4
SE
6
0.2
ENE
12
0.3
NE
12
0.5
NNE
4
0.1
E
9
Energy kJ
7
8
7
5
4
4
1
5
6
6
5
1
17
13
9
15
22
11
2
Wind waves
Height (m)
Direction
Period (s)
0.7
WSW
5
0.6
WSW
4
0.4
SW
4
0.8
SSW
4
0.9
SW
4
0.9
SW
6
1
SW
6
1.1
SW
7
0.8
S
6
0.3
SSE
2
1.5
S
6
3.5
SSW
9
1.9
SW
8
1.2
SW
8
1.4
SSW
6
1.2
NE
6
1.6
NE
6
Energy kJ
22
13
6
17
29
60
74
97
49
1
188
2132
475
187
170
88
178
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
1
1
1
1
1
1
1
2
1
1
2
1
1
2
1
Distance (km)
24
66
59
73
600
608
73
650
10
10
600
618
608
765
29
10
10
10
10
618
0
Best forecast wave conditions in Okinawa
Rating
(10 max)
2
2
1
1
1
2
1
1
2
2
1
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
6
4
2
1
1
1
2
2
3
2
2
1
4
1
7
3
2
2
1
1
2
Header Global
Rating
(10 max)
4
5
5
5
4
5
5
6
9
9
8
9
9
6
8
7
6
9
5
5
9
  • 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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