Shag Rock Surf Break

Shag Rock 48 hour detailed Surf Forecast

Lat Long: 36.87° S 174.44° E

Issued: 5 am 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Shag Rock sea temperature is
15.7° C

Normal for this time of year

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


How big are the waves at Shag Rock today (21 Jun):

  • Morning surf: Morning surf (21 Jun, local time) - 7ft (2.2m), 12s period with WSW swell.
  • Afternoon surf: Afternoon surf (21 Jun, local time) - 8ft (2.5m), 12s period with WSW swell.
  • Evening surf: Evening surf (21 Jun, local time) - 6.5ft (2.0m), 10s period with WSW swell.

The current surf forecast for Shag Rock at 1PM is: 2.5m 12s primary swell from a West-southwest direction and 2.4m 12s secondary swell from a West-southwest direction, 0.9m 18s secondary swell from a Southwest direction (forecast issued at 05:00am June 21). The wind direction is predicted to be cross-onshore.

Time (NZST) & DateWave HeightWave Period
Morning (21 Jun)7ft (2.2m)12s
Afternoon (21 Jun)8ft (2.5m)12s
Evening (21 Jun)6.5ft (2.0m)10s

Table - waves today at Shag Rock. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 16°C on Sun morning, min 12°C on Mon night). Winds increasing (calm on Mon afternoon, fresh winds from the NE by Tue night).

Sunday
21
Monday
22
Tuesday
23
Wed
24
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
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
Rating
(10 max)
0
0
0
0
1
2
2
1
2
2
3
3
2
3
3
4
4
4
4
3
3
3
3
2
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)
1
SW
13
2
WSW
12
2.2
WSW
12
2.5
WSW
12
2.5
WSW
12
2.3
WSW
11
2
WSW
10
1.4
SW
16
1
SW
16
0.9
WSW
16
1.4
SW
16
1.4
SW
15
1.3
WSW
14
1.2
SW
14
1.2
SW
14
1.6
SW
14
1.6
SW
14
1.6
SW
14
1.6
SW
14
1.7
SW
14
1.8
SW
14
1.8
SW
14
1.8
SW
14
1.8
SW
14
Wave Graph
Metric surfscale
Energy kJ
349
1145
1293
1946
1689
1288
834
1018
483
430
871
795
701
606
597
992
1006
1006
1049
1083
1184
1201
1253
1289
Wind (km/h)
20
NW
25
WNW
20
WNW
25
WNW
15
WSW
15
SW
15
WSW
15
WSW
15
SSW
15
SSW
10
S
10
SSW
5
S
0
SE
5
E
5
ENE
10
E
10
ENE
10
ENE
20
NE
20
NE
20
NE
25
NE
25
NE
Wind State
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
glassy
glassy
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
1:58AM2.69m
2:28PM2.42m
2:52AM2.54m
3:27PM2.32m
3:48AM2.40m
4:27PM2.27m
Low Tide
8:23AM0.36m
8:40PM0.48m
9:18AM0.47m
9:38PM0.62m
10:13AM0.56m
10:37PM0.71m
cloud
part cloud
part cloud
cloud
rain showers
clear
clear
clear
clear
cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:35
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:12
5:13
5:13
5:13
 mm
2
1
Temp °C
15
16
16
16
16
15
15
15
14
13
13
13
14
13
13
12
12
12
13
15
16
14
15
14
Feels °C
12
13
13
13
14
14
14
13
11
9
11
11
12
12
12
11
10
10
11
12
13
11
11
9
Swell 1
Height (m)
Direction
Period (s)
1
SW
13
0.7
SW
18
0.9
SW
18
2.4
WSW
12
0.9
WSW
17
2.3
WSW
11
2
WSW
10
1.6
W
10
1.5
W
10
1.5
WSW
9
1.4
SW
16
1.4
SW
15
1.3
WSW
14
1.2
SW
14
1.2
SW
14
1.6
SW
14
1.6
SW
14
1.6
SW
14
1.6
SW
14
1.7
SW
14
1.8
SW
14
1.8
SW
14
1.8
SW
14
1.8
SW
14
Energy kJ
316
323
455
1619
522
1288
834
509
441
377
871
795
701
606
597
992
1006
1006
1049
1083
1184
1201
1253
1289
Swell 2
Height (m)
Direction
Period (s)
0.7
SW
18
0.9
SW
18
0.9
SW
17
1
SW
17
1.2
SW
16
1.4
SW
16
1.1
SW
12
1.1
SW
12
1.1
W
10
1
W
9
1
SW
7
1
SW
7
0.9
SW
7
0.7
W
8
0.6
W
8
0.6
W
8
0.6
W
8
0.5
W
8
0.5
W
8
0.3
W
7
0.4
NNW
4
Energy kJ
349
444
429
547
739
1018
330
347
214
159
85
91
73
69
51
49
48
33
31
10
7
Swell 3
Height (m)
Direction
Period (s)
0.9
SW
17
0.9
SW
16
0.9
SW
12
1
SW
16
0.9
WSW
16
0.9
SW
15
0.9
SSW
6
0.9
W
9
0.8
W
9
0.8
W
9
0.3
W
7
Energy kJ
400
371
232
483
430
344
61
127
101
94
10
Wind waves
Height (m)
Direction
Period (s)
1.3
W
6
2
WSW
12
2.2
WSW
12
2.5
WSW
12
2.5
WSW
12
1
SSW
6
0.6
NW
8
0.5
N
3
0.4
NNW
7
Energy kJ
127
1145
1293
1946
1689
58
36
5
21
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
3
4
4
3
4
3
3
3
4
4
4
4
2
4
2
2
4
Distance (km)
38
76
76
88
88
117
202
221
163
111
9
9
9
0
0
0
0
0
0
117
111
2
2
279
Best forecast wave conditions in Auckland
Rating
(10 max)
1
3
4
3
3
3
4
4
4
4
3
2
Best forecast wave conditions in New Zealand
Rating
(10 max)
4
4
4
4
1
1
4
5
5
6
7
6
5
5
5
7
4
4
4
4
4
3
2
4
Header Global
Rating
(10 max)
5
5
5
9
9
9
8
8
7
7
7
6
6
6
7
7
5
5
5
5
5
6
5
5
  • 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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