Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.6°C
1.1° 

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 3 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 6AM (local time) - 2ft (0.6m), 14s period, S swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 9AM (local time) - 10ft (3.0m), 9s period, S swell with 1,619 kJ wave energy.
  • Next surfable swell (1★+): Saturday 5 Sep, 12PM (local time) - 3ft (0.9m), 8s 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 Saturday (Sep 05) at 12PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m and 15s. 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 3.0m 9s and forecast to arrive on Tuesday (Sep 08) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Sep 09) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Sat 5th Sep)3ft (0.9m) 8s
Best Surf 6AM (Thu 10th Sep)2ft (0.6m) 14s
Most Powerful 9AM (Tue 8th Sep)10ft (3.0m) 9s

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


The Lowdown

Alright, this is Rusty, and I’m looking at what’s on offer for Blacks Reef over the next couple of weeks. We’ve got a bit of a slow start, so don’t be in a rush. The first few days are pretty ordinary – the wind is mostly cross-off or cross, and the swell is small, ankle to knee high at best. The energy is weak (154), and the conditions are just not doing it for us. The water temp is about average for this time of year, nothing wild.

We’ll carry that into the weekend. Saturday the 5th is still small, with a short period swell of 8 seconds, and the wind is criss-crossing. Sunday the 6th shows a little pulse, but the morning is still a 1-out-of-10 kind of vibe. The combined energy nudges up a bit (135), but it’s still messy. Monday the 7th is a write-off with onshore wind and rain.

Now, Tuesday the 8th – that’s when things get real, but not in a good way. The swell jumps to 10ft out of the south, but the wind is howling onshore at 22 mph. The energy is massive (2813), but it’s a washing machine. Definitely not for beginners – this is big, messy, and only for the brave. That afternoon, the wind is on, and the swell is still 8ft.

Wednesday the 9th sees the swell drop back but the wind is still cross-onshore, making it lumpy. The energy is moderate (233). Nothing to write home about.

Things start to look up a bit on Thursday the 10th. The morning has a cross-off breeze and a long period groundswell of 14 seconds. The swell is small at 2ft, but that long period, combined with clean wind, makes it a sneaky small-wave option. The energy is moderate (233). It’s marginal, but for a log or a longboard, it might be fun.

Friday the 11th is a mess again: rain, strong onshore wind, and building swell. The afternoon is a no-go for paddling – that 8ft south swell with 22 mph onshore wind is more of a kiteboarder’s playground.

The first real standout is Saturday the 12th of September. The morning looks promising. We’re looking at a solid 7ft south swell, with a period of 12 seconds, and the wind is a light, cross-off breeze from the north-northwest. The energy is very strong (1258). This is a good, clean groundswell for experienced surfers, as it’s over 5ft. The afternoon wind shifts cross-shore and the swell remains around 7ft, still with good energy (1174). It’s the best window of the first week.

Sunday the 13th turns ugly again. Big swell, 10ft, but onshore winds. Monday the 14th is the same story with a strong breeze.

Then, after a lull, the second standout window appears. Tuesday the 15th of September. The morning is glassy. Dead calm. The swell is 4ft from the south, period of 11 seconds. The energy is moderate (349), but the glassy conditions make it a dream. The afternoon stays clean with a cross-off breeze. This is a great day for all levels – the size is manageable. The day after, Wednesday the 16th, is smaller but still glassy in the morning.

The last big call is for Thursday the 17th of September. The morning has a 6ft south swell, and the wind is a light cross-off. The energy is strong (821). The afternoon improves to 6ft and 12 seconds, with clean cross-off wind and very strong energy (1054). This is excellent surf for experienced surfers. The wind stays clean, and the swell has good power.

After that, it fades out for the weekend with onshore wind and rain.

So, if you’re picking your days, Saturday the 12th and Thursday the 17th are the ones to circle. Tuesday the 15th is the pick for a relaxed, glassy session. Blacks Reef can get crowded, so keep that in mind.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Fri afternoon, min 9°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 21mm), heaviest during Mon night. Very mild (max 17°C on Mon morning, min 8°C on Tue night). Winds increasing (light winds from the WNW on Mon morning, strong winds from the WSW by Mon night).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
0
0
0
1
0
1
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
S
12
0.8
S
11
0.6
S
10
0.4
S
10
0.9
SSW
8
0.8
SSW
8
0.6
S
8
0.7
SSW
10
0.4
SSW
17
0.3
S
17
0.3
S
16
0.4
SSW
10
3
SSW
9
3
S
9
2.3
S
8
1.9
S
8
1.4
SSE
8
1.2
SSE
7
0.8
SSE
7
Wave Graph
Metric surfscale
Energy kJ
325
144
71
29
89
85
52
110
100
52
46
36
1518
1619
755
453
204
153
53
Wind (km/h)
20
NW
20
NW
25
NW
15
W
5
WNW
15
NE
20
WNW
10
NNW
20
NW
15
N
15
N
15
SW
45
WSW
35
SW
25
SSW
20
SSW
15
WSW
10
SE
15
N
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
off
cross-off
cross-on
cross-on
cross-on
on
on
cross-on
cross
cross-off
High Tide
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
2:43PM1.74m
3:14AM1.61m
3:41PM1.74m
Low Tide
4:42AM0.24m
5:13PM0.25m
5:34AM0.23m
6:09PM0.23m
6:29AM0.21m
7:08PM0.21m
7:26AM0.19m
8:07PM0.18m
8:26AM0.16m
9:05PM0.15m
9:27AM0.13m
10:02PM0.13m
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
light rain
light rain
heavy rain
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:24
6:22
6:20
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:47
5:49
5:50
5:51
5:52
5:52
 mm
1
4
16
Temp °C
15
16
18
13
15
14
12
17
17
16
17
12
11
11
11
10
11
11
9
Feels °C
11
12
13
8
13
10
8
13
12
14
14
9
5
4
4
5
8
7
5
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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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