Shark Alley Surf Break

Lat Long: 36.27° S 175.51° E

Shark Alley Surf Forecast and Surf Report

Issued: 5 pm 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Shark Alley sea temperature is
15.5° C
0.4° 

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


Shark Alley surf forecast from 4 Aug 2026:

  • Best quality surf: Monday 10 Aug, 9AM (local time) - 8ft (2.5m), 10s period, N swell with offshore winds.
  • Most powerful swell: Monday 10 Aug, 3AM (local time) - 13ft (4.0m), 10s period, N swell with 2,766 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 9AM (local time) - 8ft (2.5m), 10s period with N swell.

Best Forecast Surf Conditions for Shark Alley this week:

The surf forecast for Shark Alley over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 10) at 9AM. The primary swell is predicted to be 2.5m and 10s period with a secondary swell of 0.1m and 12s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Shark Alley in the next 16 days are 4.0m 10s and forecast to arrive on Monday (Aug 10) 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 1.3m 6s period and expected on Wednesday (Aug 05) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Mon 10th Aug)8ft (2.5m) 10s
Best Surf 9AM (Mon 10th Aug)8ft (2.5m) 10s
Most Powerful 3AM (Mon 10th Aug)13ft (4.0m) 10s

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


Short Range Forecast

Mostly dry. Very mild (max 13°C on Tue afternoon, min 7°C on Tue night). Winds decreasing (strong winds from the S on Tue night, light winds from the SSW by Wed night).

Days 5-7 Weather Summary

Heavy rain (total 20mm), heaviest during Sun night. Very mild (max 16°C on Sun afternoon, min 9°C on Fri afternoon). Winds increasing (light winds from the W on Fri afternoon, strong winds from the N by Sun afternoon).

Tue
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
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
4
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
NE
12
0.2
ENE
12
1.2
SE
7
0.8
SE
6
0.2
ESE
9
0.5
ESE
6
0.5
ESE
7
0.5
ESE
7
0.4
ESE
7
0.2
N
14
0.2
N
13
0.2
N
12
0.2
N
12
0.9
NNW
5
1.4
NNW
6
2.1
N
7
3.5
N
9
2.5
N
10
2.1
N
9
1.8
NNE
9
Wave Graph
Metric surfscale
Energy kJ
23
14
124
47
7
20
28
26
15
15
14
12
12
39
155
470
1776
1431
766
540
Wind (km/h)
40
SW
30
SSE
25
S
15
S
10
SW
10
SSW
20
SW
15
SSW
15
WSW
15
WSW
10
NW
20
WNW
20
NNW
30
N
40
N
45
N
40
NNW
25
SSW
20
SW
10
SW
Wind State
off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
off
off
off
High Tide
11:28PM2.20m
11:50AM2.12m
00:13AM2.16m
12:38PM2.09m
1:03AM2.12m
1:32PM2.06m
1:59AM2.08m
2:36PM2.05m
3:03AM2.06m
3:49PM2.08m
4:13AM2.08m
4:59PM2.16m
Low Tide
4:57PM0.63m
5:32AM0.59m
5:46PM0.69m
6:21AM0.59m
6:43PM0.73m
7:14AM0.60m
7:45PM0.75m
8:11AM0.60m
8:49PM0.75m
9:13AM0.59m
9:55PM0.71m
10:18AM0.55m
11:01PM0.65m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
cloud
light rain
rain showers
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:11
7:09
7:09
7:07
7:07
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:35
5:36
5:37
5:37
5:38
5:38
5:39
 mm
1
19
Temp °C
13
11
8
9
10
9
10
10
9
9
11
12
14
15
15
16
16
14
14
14
Feels °C
4
1
2
4
6
5
6
6
6
6
7
8
9
9
7
8
15
10
10
13
  • Map Icons:
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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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Information about the Shark Alley Surf forecast

The above surf forecast table for Shark Alley provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shark Alley can be found by selecting the local surf guide option on the grey menu. Our Shark Alley 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 (Shark Alley) 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 Shark Alley 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.

Shark Alley is 88 km (55 miles) from the city of Northshore. If you plan a holiday in Great Barrier Island, look for hotels and other accommodation in Northshore. Northshore has rooms for a wide range of budgets as well as car hire and transport links.

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