Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 5 am 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.3°C
1.3° 

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, 6PM (local time) - 10ft (3.0m), 13s period, S swell with offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 6PM (local time) - 10ft (3.0m), 13s period, S swell with 3,078 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 3PM (local time) - 6ft (1.8m), 17s period with S 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 Thursday (Aug 27) at 3PM. The primary swell is predicted to be 1.8m and 17s period with a secondary swell of 0.8m and 5s. 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 3.0m 13s and forecast to arrive on Tuesday (Sep 01) at 6PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Saturday (Aug 29) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Thu 27th Aug)6ft (1.8m) 17s
Best Surf 6PM (Tue 1st Sep)10ft (3.0m) 13s
Most Powerful 6PM (Tue 1st Sep)10ft (3.0m) 13s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about what’s brewing for the next couple of weeks.

We’ve got a solid window of surf kicking off from Thursday the 27th of August, with a decent southerly groundswell that’s going to have some serious legs. This isn’t just a quick spike; there’s a good run of energy through the weekend, a bit of a hiccup, and then a return of some bigger, more powerful stuff early the following week. The water temp is sitting right where it should be for this time of year, so nothing spooky there.

The standout is definitely Blacks Reef. It’s an exposed reef break, very consistent, and it’s going to see the best of this swell. Thursday afternoon the 27th is looking prime. We’re talking a solid 7 ft of swell from the south, with a super long period of 17 seconds pushing in. That’s proper groundswell, tons of energy (2323), and the wind is going to be off from the east, keeping it clean. This is excellent surf for experienced surfers – the size and power will be too much for beginners. The crowd factor is something to be aware of here; it’s often a popular spot, so you’ll want to be in the water early.

Friday morning the 28th is also a good call. The swell drops to 5 ft from the south, with a 13-second period, and we get a clean offshore wind from the north-northeast. The energy is still strong (814). It’s a little smaller than Thursday, but the offshore breeze will make it glassy and perfect. This is a great session for anyone who can handle a solid reef break.

The swell backs off over the weekend into smaller, weaker waves. By Sunday the 30th, it drops to 2 ft, and things are pretty ordinary.

Then we get a pulse of bigger swell rolling in on Monday the 31st of August. We’re looking at 8 ft from the south-southwest, but the wind is cross-onshore. The energy is huge (over 2300), but it’s going to be a bit choppy and messy. Tuesday the 1st of September sees the swell peak at 10 ft from the south with a 13-second period and massive energy (2453). But again, the wind is cross-shore, so it’s marginal. This is a big, powerful south swell, perfect for experts only, but the wind is a real spoiler. It’s a situation where the setup looks more interesting for kite surfing than paddle surfing unless you’re a total charger.

Later in the week, the swell drops away again. We get a bit of a pulse on Thursday the 4th of September, with 4 ft and a 16-second period, but the wind is messy. The long period on that swell will be best at a point or reef, which is just what Blacks Reef is, but conditions are holding it back.

The second week is quiet. There’s a brief window of hope on Monday the 7th of September with a 2 ft, 18-second period south swell, and clean, light wind. The energy is moderate (232). It’s small and inconsistent, but if you’re desperate, it’s a surfable wave. After that, it’s pretty much flat with tiny, weak, wind-affected surf through to the 11th of September. Not a lot to get excited about.

So, to wrap it up: your best bet is Thursday afternoon the 27th and Friday morning the 28th of August at Blacks Reef for the best combination of size, power, and clean conditions. The big swell on the 1st of September has the power but the wind is going to make it a battle.

Rusty.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat afternoon. Very mild (max 17°C on Fri afternoon, min 10°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Very mild (max 16°C on Sun afternoon, min 9°C on Mon night). Winds decreasing (fresh winds from the SW on Sun night, calm by Tue morning).

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
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
4
4
3
3
2
2
2
0
0
0
0
1
1
1
3
4
4
3
1
2
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
S
18
1.8
S
17
1.9
S
16
1.6
S
13
1.3
S
13
1.1
S
12
0.9
S
12
0.8
S
11
0.7
S
11
0.6
S
11
0.5
S
10
0.8
SSW
13
2.5
SSW
8
2.5
S
12
2.3
S
13
2.3
SSW
12
3
S
13
2.4
S
12
1.8
S
12
1.8
S
12
1.5
S
12
Wave Graph
Metric surfscale
Energy kJ
1357
1881
1750
901
543
350
216
160
119
79
51
239
864
1820
1838
1468
2641
1656
930
961
649
Wind (km/h)
10
SW
15
E
20
NNE
15
NNE
15
N
15
N
10
NNE
10
NNE
10
WSW
10
WNW
10
WNW
25
W
15
W
20
WSW
30
W
10
SSW
5
E
10
NW
20
NW
25
WNW
25
NW
Wind State
on
cross-off
off
off
cross-off
cross-off
off
off
cross-on
cross
cross
cross-on
cross-on
cross-on
cross
on
cross-off
cross-off
cross-off
cross
cross-off
High Tide
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
9:13AM1.70m
9:40PM1.69m
Low Tide
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
3:05AM0.23m
3:28PM0.25m
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
mod rain
rain showers
clear
clear
clear
clear
clear
rain showers
rain showers
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:37
6:35
6:35
6:33
6:31
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:40
5:42
5:43
5:44
5:45
5:45
5:46
 mm
8
3
1
1
Temp °C
13
12
11
16
17
14
15
13
13
14
16
14
13
15
13
9
11
10
17
18
16
Feels °C
12
10
7
13
14
11
13
11
13
11
13
8
10
10
5
6
9
7
11
13
12
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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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