Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 5 am 15 Jul 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.9° 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 15 Jul 2026:

  • Best quality surf: Friday 17 Jul, 6PM (local time) - 5.5ft (1.7m), 15s period, SE swell with cross-offshore winds.
  • Most powerful swell: Sunday 19 Jul, 9AM (local time) - 8ft (2.4m), 19s period, S swell with 4,054 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 3PM (local time) - 1.5ft (0.4m), 11s period with ESE 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 Wednesday (Jul 15) at 3PM. The primary swell is predicted to be 0.4m and 11s 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 2.4m 19s and forecast to arrive on Sunday (Jul 19) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Jul 16) at 9AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Wed 15th Jul)1.5ft (0.4m) 11s
Best Surf 6PM (Fri 17th Jul)5.5ft (1.7m) 15s
Most Powerful 9AM (Sun 19th Jul)8ft (2.4m) 19s

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


The Lowdown

G'day, I'm Rusty, and I've been staring at the charts for your local stretch. Let's get into it.

Alright, we've got a bit of a slow burner here. The first few days are small, but the real talk starts around Thursday the 16th when a proper groundswell starts to build. The standout window is going to be the morning of Tuesday the 21st of July. That's the one you want to circle. Before that, we've got a solid run from late next week into the weekend, but the conditions are a bit mixed.

Blacks Reef is the only game in town, and it's a reef break, so it loves a good long-period swell. It's very consistent, which is a bonus. The water is sitting at 55°, which is a bit colder than normal for this time of year, so don't forget the booties.

We start off small on Wednesday the 15th. Swell is a tiny 1ft from the ESE with a period of 11 seconds. The energy is weak (50). The morning is clean with a light NW cross-off, but it's not really doing anything. The afternoon goes glassy, but it's still just dribble. Not worth paddling out for.

Thursday the 16th sees a pulse. The morning swell is still small at 2ft, but the period jumps to 15 seconds. That's a proper groundswell. The energy is moderate (224) and the wind is a clean NW cross-off. It's a great session for a log or a longboard. The afternoon gets a bit messy with a stronger WNW cross-shore and the swell picks up to 3ft, but the period is even longer at 17 seconds. The energy jumps to 540, but the cross-shore wind will make it bumpy.

Friday the 17th, the swell is up to 6ft from the SE, but the period is a very long 16 seconds. The energy is strong (1528). The morning is clean with a light WNW cross, but that long period from the SE at a reef can make it a bit tricky, with lulls between sets. The afternoon drops to a cross-on wind, which is never ideal for a reef. This is one for the experienced crew.

Saturday the 18th is still pumping with a 5ft SE swell, period 14 seconds, and energy still strong (1261). The wind is light and cross-shore, so it's surfable, but not perfect. The set waves will be there, but the shape will be a bit average.

Now, Sunday the 19th is a write-off. The wind is howling onshore from the SSW at 15 mph, with a 8ft S swell. It's a washing machine. Don't bother.

Monday the 20th is still big at 7ft from the S, but the wind is cross-onshore in the morning and onshore in the afternoon. It's going to be a choppy, bumpy mess. The energy is very strong (2398), but the quality is poor.

And here's the best of the lot. Tuesday the 21st of July. The morning is a dream. It’s glassy – completely flat wind, with a 6ft S swell and a 13-second period. The energy is still strong (1105). This is the one. The wave quality will be excellent for experienced surfers. The reef will be handling that long period S swell perfectly, offering up some proper, lined-up waves. The afternoon shift sees a light ENE cross-off wind, keeping it clean with the swell dropping to 5ft. It's still very good.

Wednesday the 22nd is a nice follow-up. Glassy again in the morning with a 3ft S swell. The energy is moderate (449). The afternoon stays glassy. Perfect for a fun, easy session.

After that, the swell steadily drops. Thursday the 23rd is clean but small (2ft), and then from Friday the 24th through to the end of the outlook (July 30th), we are looking at a long period of very small, weak surf. From the 24th to the 27th, the swell is consistently under 2ft with low energy. There's a little bump on the 28th and 29th (3ft to 4ft), but the wind is not ideal and the period is short. The last day, Thursday the 30th of July, shows a bit of hope with a glassy morning and a 3ft S swell, but it's a long way out.

So, bottom line: If you are an experienced surfer, Tuesday the 21st of July is your absolute best bet. That glassy morning with the 6ft groundswell at Blacks Reef is the standout. The previous weekend has size, but the wind is a factor. The rest of the second week is mostly a flat spell, though the very end of the month might offer a glimmer.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Wed afternoon, min 8°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Sat night. Very mild (max 13°C on Sat afternoon, min 7°C on Sun night). Winds decreasing (fresh winds from the SSW on Sat night, calm by Mon afternoon).

Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
2
1
3
3
3
4
3
3
0
0
0
1
2
2
3
4
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
ESE
11
0.4
ESE
11
0.5
ESE
13
0.7
ESE
15
0.9
ESE
17
1.4
SE
16
1.7
SE
16
1.8
SE
16
1.6
SE
15
1.5
SE
14
1.3
SE
14
1.6
S
22
2.4
S
19
1.8
S
17
1.9
S
16
2.2
S
15
2.2
S
15
2
S
15
1.7
S
13
1.5
S
13
1.2
S
12
Wave Graph
Metric surfscale
Energy kJ
48
47
96
196
516
976
1467
1493
1062
899
706
2351
4054
1947
1789
2226
2240
1676
1006
700
400
Wind (km/h)
10
NW
5
E
10
NW
15
NW
20
WNW
5
SW
5
WNW
5
SSE
10
N
10
WNW
5
SE
25
SW
25
SSW
20
SSW
15
SW
15
WSW
10
SW
10
WNW
5
NW
5
ENE
10
NNW
Wind State
cross-off
glassy
cross-off
cross-off
cross
cross-on
cross
cross-on
off
cross
cross
on
on
on
cross-on
cross-on
on
cross
glassy
cross-off
cross-off
High Tide
6:14PM1.96m
6:44AM1.79m
7:11PM1.96m
7:42AM1.78m
8:06PM1.93m
8:36AM1.77m
8:58PM1.88m
9:27AM1.75m
9:50PM1.81m
10:17AM1.72m
10:42PM1.74m
11:07AM1.68m
11:33PM1.68m
Low Tide
11:59AM0.08m
00:36AM0.09m
12:53PM0.04m
1:34AM0.06m
1:47PM0.03m
2:28AM0.06m
2:42PM0.06m
3:21AM0.09m
3:36PM0.13m
4:12AM0.14m
4:30PM0.21m
5:02AM0.20m
5:23PM0.29m
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
rain showers
cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:24
7:22
7:22
7:22
7:20
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:04
5:05
5:06
5:07
5:07
5:07
5:08
 mm
1
Temp °C
16
17
14
16
17
14
12
13
10
12
13
11
11
11
10
9
10
8
11
12
9
Feels °C
14
15
12
13
13
11
10
12
8
10
11
4
5
5
6
5
7
6
9
9
5
  • 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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