Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
11.8°C
1.8° 

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


Blacks Reef surf forecast from 26 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 6AM (local time) - 11ft (3.5m), 12s period, S swell with cross-onshore winds.
  • Most powerful swell: Tuesday 1 Sep, 12PM (local time) - 11ft (3.5m), 13s period, S swell with 4,499 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 9PM (local time) - 3ft (0.9m), 15s period with SSW swell.

Best Forecast Surf Conditions for Blacks Reef this week:

The surf forecast for Blacks Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 9PM. The primary swell is predicted to be 0.9m and 15s period with a secondary swell of 0.3m and 12s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Blacks Reef in the next 16 days are 3.5m 13s and forecast to arrive on Tuesday (Sep 01) 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 1.1m 6s period and expected on Saturday (Aug 29) at 6AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 26th Aug)3ft (0.9m) 15s
Best Surf 6AM (Tue 1st Sep)11ft (3.5m) 12s
Most Powerful12PM (Tue 1st Sep)11ft (3.5m) 13s

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


The Lowdown

G’day, it’s Rusty here, and I’ve got the rundown on Blacks Reef for the next couple of weeks. This spot is a protected reef break that loves a solid south groundswell, and let me tell you, there’s some serious energy heading our way mid-period, but we’ve got to work through some wind and size issues first to get to the good stuff.

Right now, the water is sitting around 53°F which is a bit colder than normal for this time of year—you’ll want the thick rubber. The ocean’s got a pulse of long-period south swell in the water, but it’s inconsistent. Wednesday morning starts off with some clean 3ft surf at 18 seconds, light cross-off winds out of the NW. It’s surfable but just a hint of what’s to come. The afternoon cleans right up to glassy conditions, still around 3ft, and the energy is moderate. Not a standout, but a nice way to ease into it.

Thursday is where things start to wake up. The morning brings 5ft of south groundswell, but the wind swings onshore from the SW, making it a bit of a washout. By Thursday afternoon, the swell pushes up to 7ft from the south with 17 seconds of period, and the easterly breeze is cross-off. The wave energy jumps to strong, and the report says it’s excellent for experienced surfers. That’s a good call. It’s still manageable for a strong intermediate, but the power is definitely up.

Friday morning is looking clean with a gentle NNE offshore wind and 5ft at 13 seconds. The energy is moderate. It’s a solid, fun morning, but then the afternoon gets a bit messy as the wind drops and clouds roll in, with the swell easing to 4ft. Saturday sees the swell fade to under 3ft and the wind turns cross-off from the north, but it’s all pretty average—just clean little waves for a longboard.

Then we hit a bit of a lull. Sunday is poor—small, weak, cross-shore wind and barely any energy. The swell drops to nothing. Monday morning brings a jump in size, but it’s onshore and messy, and the wave comment says questionable tide. Not worth it. The real gem is Monday afternoon. The swell jumps to 10ft from the south with a 14-second period, and the wind turns light cross-off out of the ENE. The wave energy is very strong, and it’s clean as a whistle. This is an expert-only wave—anything over 8ft is a big, heavy reef break. For the crew who know Blacks Reef, this will be the session of the period. Paddling out will be a mission, but the sets will be incredible.

Tuesday the 1st of September sees the swell build even more, hitting 12ft. But the forecast calls it too big for this break, even with favorable wind. It’ll be a washing machine even if it’s technically clean. I’d give that a miss unless you’re a total charger and know the reef better than your own backyard. By Wednesday the 2nd, it’s still pushing 8ft, but strong WNW winds churn up the surface. That’s a mess. We drop back down through the end of the week—Thursday sees some lumpy cross-on conditions, but Friday afternoon on the 4th of September looks interesting. Swell jumps back to 8ft from the south with a 19-second period, and it’s cross-off from the NW with strong energy. It’s a big, long-period groundswell, so expect long waits between sets, but when they come, they’ll be solid. This is another expert-only window, and the long period could make it breaking a bit too straight at this reef, but it should still hold plenty of shape.

After that, the surf runs out of gas. The second week is mostly small and weak. There’s a couple of days of clean but tiny waves—like the 10th of September, with 4ft to 4ft at short periods and light offshore winds. It’s surfable, but ordinary. The last few days are just flat and poor, with strong onshore winds and rain moving in. We’re looking at a solid blank run from around the 7th all the way through the end of the window, barring that small bump on the 10th.

So, to sum it up: the standout sessions are Thursday afternoon the 27th and Monday afternoon the 31st of August. The Monday one is bigger and more powerful, but it’s a serious wave. For the everyday surfer, Thursday afternoon will be the best balance of size, clean conditions, and a manageable crowd possibility—it says crowds are often, so expect some company. Just remember, the big days are for experts only. Stay safe out there.

Rusty

Short Range Forecast

Mostly dry. Very mild (max 18°C on Wed afternoon, min 11°C on Thu afternoon). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 17°C on Sun afternoon, min 9°C on Sat night). Winds decreasing (strong winds from the SW on Sun night, calm by Mon afternoon).

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
1
2
4
4
3
2
1
2
2
0
0
0
0
1
5
2
!
!
4
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
S
18
1
S
16
0.9
S
17
1.5
S
18
2
S
17
1.8
S
16
1.5
S
13
1.3
S
13
1
S
12
0.9
S
12
0.9
S
11
0.8
S
11
0.6
S
11
0.4
SSE
10
1.3
SW
5
2.5
SSW
11
3
S
14
2.1
S
13
3.5
S
13
3.5
S
13
2.4
S
13
Wave Graph
Metric surfscale
Energy kJ
492
535
443
1357
2299
1551
780
534
290
216
202
154
81
33
82
1628
3674
1475
4176
4013
1854
Wind (km/h)
10
NW
5
NE
15
NW
10
SW
15
E
20
NNE
15
NNE
15
N
20
N
15
N
15
N
15
WSW
20
WNW
10
WNW
30
WNW
15
SW
10
ENE
25
W
10
WSW
15
ENE
10
NW
Wind State
cross-off
glassy
cross-off
on
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-on
cross
cross
cross
cross-on
cross-off
cross
cross-on
cross-off
cross-off
High Tide
4:13PM1.49m
4:33AM1.38m
4:59PM1.50m
5:22AM1.41m
5:47PM1.53m
6:11AM1.46m
6:33PM1.57m
6:58AM1.52m
7:20PM1.62m
7:44AM1.59m
8:05PM1.66m
8:29AM1.65m
8:52PM1.69m
Low Tide
10:00AM0.41m
10:29PM0.39m
10:48AM0.36m
11:15PM0.34m
11:32AM0.32m
00:03AM0.30m
12:17PM0.28m
00:49AM0.26m
1:02PM0.25m
1:35AM0.24m
1:48PM0.24m
2:20AM0.23m
2:37PM0.24m
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
part cloud
clear
clear
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:39
6:37
6:35
6:35
6:33
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:39
5:40
5:42
5:43
5:44
5:45
5:45
 mm
Temp °C
17
18
15
13
12
12
16
16
15
16
15
13
15
17
14
11
12
12
13
14
11
Feels °C
15
16
12
11
9
8
13
12
11
14
12
11
12
15
7
8
8
6
10
11
8
  • 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 Blacks Reef Surf forecast

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

Blacks Reef is 50 km (31 miles) from the city of Gisborne. If you plan a holiday in Gisborne and Mahia, look for hotels and other accommodation in Gisborne. Gisborne has rooms for a wide range of budgets as well as car hire and transport links.

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