Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 5 am 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.2°C
1.4° 

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 31 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 6PM (local time) - 11ft (3.5m), 13s period, S swell with glassy winds.
  • Most powerful swell: Tuesday 1 Sep, 9PM (local time) - 11ft (3.5m), 14s period, S swell with 4,392 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 6PM (local time) - 11ft (3.5m), 13s 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 Tuesday (Sep 01) at 6PM. The primary swell is predicted to be 3.5m and 13s period. 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 3.5m 14s and forecast to arrive on Tuesday (Sep 01) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Sunday (Sep 06) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Tue 1st Sep)11ft (3.5m) 13s
Best Surf 6PM (Tue 1st Sep)11ft (3.5m) 13s
Most Powerful 9PM (Tue 1st Sep)11ft (3.5m) 14s

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


The Lowdown

Alright, Rusty here. Let’s talk about Blacks Reef.

We’re looking at a solid run of south swell, but it’s not all going to be friendly. There’s a bit of a rough start to kick things off, but the week has a couple of real moments that’ll make you paddle out.

Tuesday morning kicks in with a chunky 10ft south swell, but the wind is cross-onshore out of the southwest at 15 mph, and the water is getting messy. The combined wave energy is strong at 2822, but the surf quality is poor – a real fight. It improves slightly by the afternoon as the wind drops to a light breeze, but it’s still a cross-onshore situation, and the water has those small ripples. Expectations are low.

Now, Wednesday 2nd September is where we get a proper window. The morning already looks cleaner with a 8ft south swell, a light NNW breeze giving us clean conditions, and energy pumping at 2936. That’s excellent for experienced surfers. But the real standout is Wednesday afternoon: the wind goes glassy, a light 3 mph from the NE, with a 8ft south swell and an incredible 17-second period. That’s a very long period groundswell, packing a punch at 4137 combined energy. This is the best on offer – for experts only, but the waves will be powerful, well-shaped, and clean as a whistle. Blacks Reef is exposed to the south, and that’s exactly what we need. The water temperature is about average for this time of year, nothing unusual.

Thursday 3rd September still has clean 5ft surf in the morning, but the energy drops and the wind picks up a bit. By the afternoon it fades to smaller 4ft waves with light cross-shore ripples. After that, we hit a dry spell. From Friday the 4th through Monday the 7th, the swell drops right out – tiny waves under 3ft, and mostly poor conditions. Tuesday the 8th sees a pulse of 10ft south swell return, but it’s cross-on and cross-shore winds again, so it’s marginal at best. Wednesday the 9th is small but clean, around 4ft to 4ft.

The middle of the second week gets ugly. Thursday the 10th and Friday the 11th have onshore gales and small, messy surf. Forget it. Then Saturday 12th September morning goes glassy, with a long 18-second swell, but it’s only 2ft. There’s some energy there (300) but not enough to get excited about.

The last real highlight is Tuesday 15th September. Morning is glassy with a 5ft south swell and energy at 730. That’s looking very good. But Tuesday afternoon is the standout of the second week: offshore wind from the NE, 7ft south swell, 11-second period, and solid energy at 1123. Clean and powerful – excellent for experienced surfers. Wednesday 16th holds some 4ft waves with gentle offshore wind, a decent way to finish.

Crowds? Blacks Reef is marked as “often” crowded, so when the quality hits, expect company. The break is very consistent, so it doesn’t stay flat for long.

Rusty

Short Range Forecast

Some drizzle, heaviest during Tue morning. Very mild (max 19°C on Thu afternoon, min 7°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

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

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
3
!
5
5
4
3
3
1
0
0
0
0
1
2
0
0
0
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
S
12
3
S
12
3.5
S
14
2.4
S
14
2.5
S
17
2.3
S
14
1.7
S
13
1.4
S
13
1
S
12
0.8
S
11
0.6
S
10
0.4
S
10
0.2
S
15
0.5
S
14
0.9
SSW
12
0.8
SSW
10
0.7
S
10
0.4
SSW
10
1.4
SW
5
2.5
SSW
8
3
S
12
Wave Graph
Metric surfscale
Energy kJ
2744
2785
4196
2073
4137
2155
976
623
276
146
72
30
22
97
240
136
96
33
103
824
2924
Wind (km/h)
20
SW
5
WSW
10
NW
10
NNW
5
NE
10
NW
10
NW
10
NW
15
NW
20
NNW
30
NW
15
WNW
15
W
5
SE
15
N
15
NNW
30
N
15
NW
30
W
40
SSW
15
W
Wind State
cross-on
cross-on
cross-off
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
glassy
cross-off
cross-off
cross-off
cross-off
cross
on
cross-on
High Tide
8:52PM1.69m
9:13AM1.70m
9:40PM1.69m
9:59AM1.73m
10:30PM1.68m
10:50AM1.74m
11:22PM1.67m
11:46AM1.74m
00:17AM1.65m
12:46PM1.73m
1:15AM1.63m
1:45PM1.73m
2:15AM1.61m
Low Tide
2:37PM0.24m
3:05AM0.23m
3:28PM0.25m
3:52AM0.23m
4:20PM0.25m
4:42AM0.24m
5:13PM0.25m
5:34AM0.23m
6:09PM0.23m
6:29AM0.21m
7:08PM0.21m
7:26AM0.19m
8:07PM0.18m
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
cloud
cloud
rain showers
rain showers
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:30
6:28
6:26
6:26
6:24
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:46
5:46
5:47
5:49
5:50
5:51
 mm
1
2
1
1
1
Temp °C
8
9
8
15
16
13
18
19
15
16
16
12
14
14
11
15
16
13
12
10
8
Feels °C
2
6
5
13
14
10
15
16
12
11
10
8
11
12
7
11
10
8
5
2
3
  • 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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