Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 am 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.8° 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 21 Jul 2026:

  • Best quality surf: Tuesday 21 Jul, 9PM (local time) - 5.5ft (1.7m), 14s period, S swell with offshore winds.
  • Most powerful swell: Tuesday 28 Jul, 6AM (local time) - 10ft (3.0m), 14s period, SE swell with 3,326 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 21 Jul, 9PM (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 Tuesday (Jul 21) at 9PM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 0.5m and 11s. 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 14s and forecast to arrive on Tuesday (Jul 28) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Saturday (Jul 25) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 21st Jul)5.5ft (1.7m) 14s
Best Surf 9PM (Tue 21st Jul)5.5ft (1.7m) 14s
Most Powerful 6AM (Tue 28th Jul)10ft (3.0m) 14s

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


The Lowdown

Alright, gather round. Let’s talk about Blacks Reef. It’s a reef break that catches anything with south in it. Right now, the water’s sitting at 55°, which is a bit cooler than you’d normally find this time of year – you’ll want the thicker wetsuit.

The start of the run is pretty poor, to be honest. Tuesday the 21st and Wednesday the 22nd are messy. There’s swell, but the wind is cross-on or cross, ruining any chance of clean lines. The wave energy is moderate to strong – readings around 2691 on Tuesday morning – but with that wind, it’s just a bumpy mess. Not worth it.

Thursday the 23rd is a cruel tease. The swell drops to 3ft from the south, but the wind goes offshore and it’s clean. The energy is weak at 210. A log or a foil might get wet, but for a proper surf, it’s borderline.

Friday the 24th is tiny and weak, and Saturday the 25th is a write-off. A strong cross-shore blow in the morning turns into a full-on onshore gale that afternoon, pumping up 6ft of sloppy windswell with a pathetic 6-second period. That’s just chop, not surf.

Then, Sunday the 26th. That’s the first real standout. The morning brings a clean 7ft south swell with a 9-second period and offshore wind. Wave energy is a strong 1614. It’s marked as excellent for experienced surfers, and I can see why – that’s a proper session. The afternoon glass-off with 4ft from the east-southeast is a nice bonus, but the morning is the one.

Monday the 27th and Tuesday the 28th are blown to bits again. Strong onshore wind, big messy swell over 8ft, energy in the thousands. It’s all power and no finesse. Stay out.

Wednesday the 29th is another clear winner. Glassy morning, 6ft of south swell with a 13-second period. That’s groundswell with serious push, and at a reef, it should wrap in beautifully. Energy is 1380. Thursday the 30th stays clean with 5ft and a 12-second period, but the energy drops to 794. Still fun, just not as punchy.

After that, it fades. Friday the 31st to Sunday the 2nd of August is small and messy, with weak energy readings under 700. Not worth the paddle.

Now, for the real heavyweight. Monday the 3rd of August. The forecast shows 16ft of south swell. The wind is glassy in the morning and cross-off in the afternoon. The energy is massive – 5809 in the morning, 9217 in the afternoon. But the warning is clear: it might be too big for this break. A reef with 16ft of south groundswell at 11 seconds is a slab. This is for the elite only. Tuesday the 4th of August is similar, with 12ft to 10ft and huge energy. Wednesday the 5th of August finally settles to a clean 5ft from the south, with an incredible 16-second period and offshore wind. The energy is still high at 2179. That afternoon is a genuine session for the experienced crew.

So the best bets: Sunday the 26th of July morning – 7ft, south, offshore. Classic. And Wednesday the 29th of July morning – glassy, 6ft, 13-second south swell. For the second week, Wednesday the 5th of August afternoon – 5ft, 16-second period, offshore wind. That’s the long-range call that looks tasty.

There’s a flat spell from the 31st of July through the 2nd of August, so plan around that.

This spot gets crowded often, so beat the crowd for the good ones.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 21mm), heaviest during Sun afternoon. Very mild (max 15°C on Fri afternoon, min 8°C on Sat night). Winds increasing (calm on Sun afternoon, strong winds from the SSW by Sun night).

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
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
3
2
1
2
2
1
1
1
1
0
0
0
0
4
3
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
S
16
2
S
15
1.6
S
13
1.3
S
12
1.1
S
12
1
S
13
0.8
S
12
0.5
S
12
0.4
SSW
10
0.4
S
10
0.4
S
9
0.3
SE
11
0.8
E
11
1.9
SW
6
3
SSW
10
2.1
S
9
1.2
ESE
13
1.3
ESE
13
1.7
ESE
13
2.5
SE
13
2.2
SE
14
Wave Graph
Metric surfscale
Energy kJ
2594
1699
905
501
342
326
180
75
34
30
27
19
157
260
1676
683
472
572
932
2310
1903
Wind (km/h)
10
WSW
5
SE
10
NNW
5
WNW
5
ESE
5
WNW
10
N
10
NE
10
NNW
15
NNW
15
NNW
20
N
25
WNW
30
SW
25
SW
5
NE
5
WSW
40
S
45
S
35
S
20
SSW
Wind State
cross-on
cross
cross-off
cross
cross
cross-off
off
off
cross-off
cross-off
cross-off
off
cross
on
cross-on
off
glassy
on
on
on
on
High Tide
11:07AM1.68m
11:33PM1.68m
11:59AM1.65m
00:24AM1.62m
12:54PM1.62m
1:14AM1.58m
1:46PM1.61m
2:03AM1.55m
2:36PM1.59m
2:51AM1.51m
3:22PM1.58m
3:37AM1.48m
4:08PM1.56m
Low Tide
5:23PM0.29m
5:51AM0.28m
6:15PM0.36m
6:39AM0.36m
7:08PM0.42m
7:27AM0.42m
8:00PM0.47m
8:15AM0.47m
8:50PM0.50m
9:04AM0.48m
9:37PM0.50m
9:53AM0.48m
10:23PM0.49m
part cloud
clear
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
light rain
rain showers
cloud
mod rain
light rain
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:20
7:20
7:18
7:18
7:18
7:16
7:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:08
5:09
5:10
5:10
5:12
5:13
5:14
 mm
5
2
9
5
3
Temp °C
10
11
9
11
11
9
13
14
11
14
15
14
11
10
10
10
8
10
10
10
9
Feels °C
9
9
6
9
9
7
9
11
7
10
11
10
6
4
3
7
7
1
0
1
2
  • 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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