Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 pm 22 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 22 Aug 2026:

  • Best quality surf: Monday 24 Aug, 3PM (local time) - 6ft (1.8m), 15s period, S swell with cross-offshore winds.
  • Most powerful swell: Monday 24 Aug, 6PM (local time) - 7ft (2.2m), 14s period, S swell with 1,841 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 12PM (local time) - 4.5ft (1.3m), 9s 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 1.3m and 9s period with a secondary swell of 0.4m 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 14s and forecast to arrive on Monday (Aug 24) 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 0.9m 4s period and expected on Sunday (Aug 23) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Mon 24th Aug)4.5ft (1.3m) 9s
Best Surf 3PM (Mon 24th Aug)6ft (1.8m) 15s
Most Powerful 6PM (Mon 24th Aug)7ft (2.2m) 14s

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


The Lowdown

Oi, Rusty here. Let's have a look at what's on the table for the next couple of weeks.

Alright, we’ve got one spot to talk about: Blacks Reef. It’s a reef break that’s exposed to the south, and it’s beginner-friendly, which is a nice change of pace. It breaks very consistently, but because it’s a reef, you’ve got to be mindful of the shallow sections. The water temp is about average for this time of year, so nothing wild there.

The start of the period is pretty flat. Sunday the 23rd is a write-off with poor surf conditions and a moderate breeze making a mess of things. We’re looking at a gap of a few days before anything worth paddling out for shows up.

Monday the 24th afternoon starts to wake things up. We get a 6ft south swell with a 15-second period – that's proper groundswell energy. The wind is light and cross-off from the ENE, so it’ll be clean. The combined energy is strong at 1427, and this is the best on offer early on. The longer period means it’ll have some punch and good shape, but on a reef that’s a good thing. Crowds are likely here, so you might have to share.

Tuesday the 25th afternoon is glassy with a 4ft south swell, 12-second period, and combined energy at 484. It’s a nice, clean, mellow session. Wednesday the 26th morning is glassy too, with a 2ft south swell but a very long 17-second period – that’ll be incredibly clean and lined up, but small. Combined energy is 442, so it’s got a bit of weight behind it for the size.

Thursday the 27th is the real standout. Both morning and afternoon are excellent for experienced surfers. The afternoon is glassy with a 5ft south swell and a 17-second period, combined energy at 1149. That’s proper, powerful, and clean. This is the pick of the whole window, no doubt.

Friday the 28th and Saturday the 29th have decent options, but nothing that tops Thursday. Saturday the 29th afternoon gets a little messy with a cross-on wind. A fairly long gap then follows from the 30th through the 31st, with strong winds and choppy, poor conditions. Not worth it.

Then we get another proper pulse. Tuesday the 1st of September afternoon is all glass with an 8ft south swell and a 17-second period – combined energy is a massive 4138. That is a big, powerful, clean swell. It’s only for experts at that size. Wednesday the 2nd is blown out by strong winds. There’s a promising but less certain pulse around the 4th of September, with a 6ft south swell and 18-second period, but the wind is moderate, so it’s a wait-and-see.

The very end of the forecast, Saturday the 7th of September morning, has a big 8ft south swell with a 16-second period and combined energy of 3450, but the cross-wind will create a chop. It’s a promising long-range call, but don’t bank on it being perfect.

For the best wave of the period, point your board towards Thursday the 27th afternoon. That’s the one.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Tue afternoon, min 9°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 20°C on Thu afternoon, min 11°C on Thu night). Wind will be generally light.

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
1
4
4
2
2
2
2
3
1
4
4
4
2
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
S
11
0.7
S
10
0.4
SE
13
1.1
SW
5
1.4
SSW
9
1.8
S
15
1.9
S
14
1.4
S
13
1.2
S
12
1
S
11
0.7
S
17
1
S
16
0.9
S
16
1.4
S
16
1.4
S
17
1.6
S
17
1.4
S
16
1.2
S
14
1.1
S
13
Wave Graph
Metric surfscale
Energy kJ
189
104
50
58
268
1392
1484
623
403
242
287
513
386
1042
1116
1508
964
565
398
Wind (km/h)
25
NW
25
NW
25
NW
15
WNW
10
WNW
10
ENE
10
NW
10
WNW
5
SW
15
NW
5
WNW
15
ENE
10
WNW
15
NW
5
NW
15
NNW
15
NNW
15
N
15
NNE
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross
glassy
cross-off
glassy
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
1:22AM1.51m
1:56PM1.54m
2:10AM1.45m
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
Low Tide
7:35AM0.46m
8:10PM0.48m
8:23AM0.46m
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
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:45
6:43
6:41
6:41
6:39
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:38
5:38
5:39
5:40
5:42
 mm
Temp °C
11
16
16
12
14
14
12
16
17
13
16
17
15
18
20
14
17
15
15
Feels °C
6
10
11
7
12
11
9
13
15
10
13
13
12
15
18
11
13
12
12
  • 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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