Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 5 am 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
11.8°C
1.9° 

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 23 Aug 2026:

  • Best quality surf: Monday 24 Aug, 6PM (local time) - 6ft (1.9m), 13s period, S swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 3PM (local time) - 7ft (2.2m), 18s period, S swell with 2,912 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 12PM (local time) - 3.5ft (1.1m), 8s 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 Monday (Aug 24) at 12PM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.3m and 17s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Blacks Reef in the next 16 days are 2.2m 18s and forecast to arrive on Thursday (Aug 27) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 7s period and expected on Saturday (Aug 29) at 6AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Mon 24th Aug)3.5ft (1.1m) 8s
Best Surf 6PM (Mon 24th Aug)6ft (1.9m) 13s
Most Powerful 3PM (Thu 27th Aug)7ft (2.2m) 18s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

First up, we’ve got a mixed bag on the horizon. The water is sitting at 53°F, which is a bit colder than normal for this time of year, so don’t forget the extra rubber. The main event is Blacks Reef, a reliable reef break that is exposed to the south swell, and it’s very consistent. It’s a beginner-friendly spot, but you’ll often be sharing the waves.

Kicking things off on Monday the 24th, the morning is a bit of a write-off with a messy cross-shore and a short-period 5ft swell from the SSW. Not worth paddling out. But the afternoon is a different story. The wind shifts to a light cross-off breeze from the ENE, cleaning up a 4ft south swell with a solid 14-second period. The energy is pumping (714), and the conditions are clean. This is a solid start.

Tuesday the 25th offers a glassy morning session, with a 3ft south swell and a 12-second period. The wind is practically nothing, making for a clean, rippable wave. The afternoon is even better, with glassy conditions and a 3ft south swell. It’s not huge, but it’s clean and fun.

Now, Thursday the 27th is a standout. The morning brings a solid 6ft south swell with a long 18-second period. The energy is serious (1781), and with a light cross-off wind from the NNW, the waves will be clean and powerful. This is for experienced surfers only, as it’s pushing into the range that’s too big for beginners. The afternoon bumps up to 7ft from the same direction, but the wind picks up a bit, making it a bit messier.

Friday the 28th is another good one. The morning has a 5ft south swell with a 14-second period and a gentle offshore wind from the north. This is a classic setup for Blacks Reef, with clean, lined-up waves (831 energy). The swell direction is south, which is the optimum direction for this break, so expect some proper waves.

After that, the surf drops off significantly. Saturday the 29th is small and a bit messy, and from Sunday the 30th through to the start of September, it’s pretty poor. The swell is tiny, the wind is onshore, and the energy is weak. There’s a real gap of poor conditions for the end of August.

Looking ahead, Tuesday the 1st of September brings a massive spike. The morning has a 13ft south swell with a 16-second period and a light offshore wind from the NNE. This is enormous energy (7654), but it’s simply too big for Blacks Reef. Unless you’re a tow-in expert, give this one a miss. The afternoon is similar, with 12ft swell and 14-second period. That’s another day for the experts only.

The rest of the first week of September is a write-off with strong winds and lumpy conditions. The energy drops off, and the wind is mostly cross-shore or onshore. There’s a slight improvement around the 7th and 8th of September, with small, clean southern swells, but nothing to get excited about.

The Pick: Thursday the 27th of August morning is the best on offer. A solid 6ft south groundswell, clean with a light cross-off wind, and a very long 18-second period. It’s a powerful, clean wave for experienced surfers. Friday the 28th morning is a close second, with a clean offshore wind and a solid 5ft south swell.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Wed afternoon, min 10°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Thu morning, min 9°C on Sat night). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
3
1
2
2
2
2
2
4
3
4
3
2
2
2
1
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)
1.5
SSW
8
1.2
S
14
1.6
S
13
1.2
S
12
1
S
12
0.7
S
15
0.8
S
18
0.9
S
16
0.9
S
17
1.7
S
18
2.2
S
18
1.8
S
15
1.5
S
14
1.4
S
13
1.2
S
12
1
S
12
1
S
11
0.9
S
11
0.8
S
10
0.8
S
10
0.8
S
9
Wave Graph
Metric surfscale
Energy kJ
293
610
851
439
294
218
390
417
459
1761
2912
1506
808
649
423
280
257
191
138
127
104
Wind (km/h)
10
W
10
ENE
10
NW
10
WNW
5
NE
10
NW
5
WNW
5
NE
15
NW
5
NNW
15
ENE
10
N
15
N
15
NNW
15
NNE
15
NW
5
SE
5
WNW
20
W
20
SW
5
NNW
Wind State
cross
cross-off
cross-off
cross
glassy
cross-off
cross
glassy
cross-off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross-on
cross
cross
cross-on
cross-off
High Tide
2:43PM1.52m
2:58AM1.40m
3:28PM1.49m
3:46AM1.38m
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
Low Tide
8:57PM0.47m
9:11AM0.44m
9:43PM0.43m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:41
6:41
6:39
6:37
6:35
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:38
5:38
5:39
5:40
5:42
5:43
5:44
 mm
Temp °C
14
15
12
15
16
12
16
17
15
18
17
13
17
16
14
17
17
13
14
15
11
Feels °C
12
11
9
13
14
9
14
15
12
16
13
9
13
12
10
15
15
11
9
10
10
  • 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 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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