Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 pm 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 27 Aug 2026:

  • Best quality surf: Friday 28 Aug, 6AM (local time) - 5.5ft (1.7m), 14s period, S swell with offshore winds.
  • Most powerful swell: Monday 31 Aug, 6PM (local time) - 10ft (3.0m), 13s period, S swell with 2,830 kJ wave energy.
  • Next surfable swell (1★+): Friday 28 Aug, 6AM (local time) - 5.5ft (1.7m), 14s 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 Friday (Aug 28) at 6AM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 0.1m and 16s. The wind is predicted to be 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 Monday (Aug 31) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Friday (Aug 28) at 3PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 28th Aug)5.5ft (1.7m) 14s
Best Surf 6AM (Fri 28th Aug)5.5ft (1.7m) 14s
Most Powerful 6PM (Mon 31st Aug)10ft (3.0m) 13s

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


The Lowdown

Alright, Rusty here, checking in with the outlook for Blacks Reef. We've got one break to watch, so let's get into it.

At first glance, it’s a bit of a mixed bag, but there’s a couple of really sweet windows if you time it right. The energy coming in is mostly moderate to strong, with the combined swell energy hitting a hefty 915 on the Friday morning, and it stays punchy through the weekend. We’re looking at a solid south swell with a decent 13-second period to start, which is proper groundswell. That’s reef-break territory, and it’s going to hold up well.

Things kick off Friday, the 28th of August. Morning is looking prime with a 5-foot south swell at 13 seconds. The wind is a light offshore from the NNE at 12 mph, so conditions are clean and lined up. The combined energy is a solid 915, giving it plenty of push. This is the standout of the first few days. The swell drops a touch into the afternoon at 4 feet, but it’s still clean and surfable.

Saturday the 29th keeps the good run going with a smaller 3-foot south swell in the morning, but still a nice 12-second period. Gentle offshore winds mean it’s tidy, if a little smaller. Afternoon holds at 3 feet with the same clean conditions. Crowds are "often" here, and with quality on offer Friday and Saturday, expect company.

The swell drops right off Sunday the 30th. Small, weak, and sloppy. A gap of poor conditions kicks in from there.

Monday the 31st picks up in size but the wind is ugly. An 8-foot south-southwest swell in the morning gets torn up by a 16 mph cross-onshore, and it only gets worse in the afternoon as the swell jumps to 10 feet. That’s big, but messy. Not one for a paddle.

Tuesday the 1st of September is a write-off. Solid 8-foot swell but onshore winds and rain. Rough.

Now here’s where it gets interesting. Wednesday the 2nd of September, morning session. A clean 7-foot south swell with a long 12-second period and a light offshore cross-off wind from the NW. The combined energy is strong at 1227. This is the real standout for experienced surfers. It’s big enough to be expert territory, but with that offshore wind and long period, the reef is going to pump. Afternoon is a bit smaller at 6 feet but with a light cross-on breeze.

Thursday the 3rd of September is also solid. A 5-foot south swell with 12 seconds and clean winds. Friday the 4th drops back to 3 feet, still rideable.

After that, it fades hard into the second week. From the 5th of September through to the 7th, you're looking at tiny surf, mostly under 2 feet. The 8th sees a jumbled short-period swell jump up to 6 feet, but it arrives with a 19 mph cross-wind that’s just churned up. Not good.

The final real highlight lands on Wednesday the 9th of September. A clean, glassy morning with a 7-foot south-southeast swell at 9 seconds. Light winds, glassy conditions, and combined energy over 1400. That’s a standout morning for experienced surfers. The afternoon stays clean with a cross-off breeze, though the period is a bit short. After that, it dribbles back down to small, weak surf through the 12th.

So, to sum it up: the best windows are Friday the 28th of August morning, Wednesday the 2nd of September morning, and Wednesday the 9th of September morning. The 2nd and the 9th are the standouts—bigger swell, offshore or glassy conditions, and solid energy. Get on it.

Rusty.

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat night. Very mild (max 16°C on Fri afternoon, min 10°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Tue morning. Very mild (max 16°C on Wed afternoon, min 6°C on Tue night). Winds decreasing (fresh winds from the WNW on Mon night, light winds from the NW by Tue night).

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
3
1
2
2
0
0
0
0
0
1
0
0
1
4
4
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
S
16
1.6
S
13
1.3
S
13
1.1
S
12
1
S
12
0.9
S
11
0.8
S
11
0.6
S
10
0.5
S
10
0.4
SSW
13
2.5
SSW
8
3
S
13
2.5
S
12
2.4
S
12
2.5
S
12
2.5
S
12
2.1
S
12
1.8
S
12
1.7
S
12
Wave Graph
Metric surfscale
Energy kJ
1745
901
543
350
266
202
154
80
52
54
795
2773
1901
1728
2017
1827
1227
902
846
Wind (km/h)
20
NNE
20
NNE
15
NNW
15
N
15
N
15
NE
10
WNW
10
WNW
10
W
30
WSW
25
WSW
20
WSW
35
WNW
25
S
15
SW
10
N
10
NW
10
WSW
15
WNW
Wind State
off
off
cross-off
cross-off
off
off
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
on
cross-on
cross-off
cross-off
cross-on
cross
High Tide
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
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
cloud
part cloud
cloud
light rain
rain showers
clear
clear
part cloud
clear
part cloud
clear
light rain
light rain
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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>
5:42
5:43
5:44
5:45
5:45
5:46
 mm
2
9
5
1
Temp °C
11
15
16
14
16
15
13
15
16
14
13
14
13
8
8
7
14
16
12
Feels °C
7
12
13
11
13
13
12
13
14
8
7
9
5
2
4
4
11
12
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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