Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 pm 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.5°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 14 Sep 2026:

  • Best quality surf: Monday 21 Sep, 6AM (local time) - 6ft (1.9m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Monday 21 Sep, 12PM (local time) - 5ft (1.5m), 18s period, S swell with 1,439 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 15 Sep, 9AM (local time) - 4.5ft (1.4m), 11s 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 15) at 9AM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.3m and 16s. 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 1.5m 18s and forecast to arrive on Monday (Sep 21) at 12PM. Winds are predicted to be cross-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 Tuesday (Sep 15) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 15th Sep)4.5ft (1.4m) 11s
Best Surf 6AM (Mon 21st Sep)6ft (1.9m) 10s
Most Powerful12PM (Mon 21st Sep)5ft (1.5m) 18s

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


The Lowdown

Alright, let me tell you how it's shaping up for Blacks Reef.

It’s a bit of a slow start, but patience will pay off. The first decent window kicks off on Tuesday, September 15th with a clean, waist-high 5ft southerly swell rolling in. That morning the wind is light offshore from the NNE and the water is glassy. It’s not huge, but with the combined swell energy sitting at 481 (moderate energy), it’s a good, manageable option for beginners and those easing into the week.

Tuesday afternoon sees the wind shift and pick up from the ENE, making conditions more of a cross-off breeze, so the waves get a bit bumpier and the quality drops. The energy is still there at 399, but the session loses its sparkle.

Wednesday the 16th drops down to 3ft from the SSE. The morning is dead calm—glassy conditions with only a 5 km/h WNW breeze. It’s pretty ordinary though, and the energy has dropped right off to 155 (weak). Fine for a longboard if you’re not fussy.

Thursday the 17th is still small, and by Thursday afternoon the wind turns onshore, and the quality disappears. Friday the 18th gets ugly early. The wind howls onshore from the SSW, 30 km/h in the morning, with rain. By the afternoon it’s 40 km/h onshore and the swell jumps to a messy 8ft with a short, weak period of just 7 seconds. Not surfable. This poor run continues through the weekend. Saturday the 19th sees a jumpy 6ft but it’s cross-on and sloppy. The energy is 659 (moderate), but the conditions are rough.

Sunday the 20th is just as bleak—clean wind in the morning but it’s cross-on and choppy. Monday the 21st is where things get interesting again. There’s a clean 4ft groundswell from the south with a very long 19-second period. The energy reading is 2058 (strong to very strong), and with light offshore NNE winds, it’s going to be clean and powerful. This is excellent surf for experienced surfers. The long period will make it better for a reef like Blacks Reef—set waves will pulse through, but the wait between sets could be longer. The afternoon holds a solid 5ft with a 17-second period and clean conditions (1479 energy). This is the standout period of the forecast—Monday 21st September.

Tuesday the 22nd and Wednesday the 23rd take a sharp turn for the worse with onshore gales. By Wednesday morning, the swell jumps to a dangerous 15ft, SSW, 40 km/h winds. The energy reading is 4318 (very strong). This is a massive storm swell—expert only, and honestly, with the wind howling onshore, it looks more like a kiteboarding day than a surfing one.

Thursday the 24th still has size—10 to 13ft—but the winds are still onshore, though easing by the afternoon to a lighter southerly. The energy readings are 9617 in the morning and 2622 in the afternoon. The afternoon is still marginal, but if the wind continues to drop, there may be some big, lumpy waves.

Friday the 25th is cross-on and choppy. Not recommended.

Into the next weekend, Saturday the 26th is small and cross-on again. Sunday the 27th, however, is another gem. The morning is completely glassed out—zero wind, with a clean 2ft from the SE, 12-second period, and energy at 215 (weak). Small, but clean as a whistle. Great for a longboard or a fun, small-wave session.

Monday the 28th is very promising. The swell jumps to a 8ft southerly with a short 8-second period, but the wind is light offshore from the NNE in the afternoon, making for clean waves. The energy is 1198 (strong). This is solid and clean—excellent for experienced surfers. Tuesday the 29th holds a clean 4ft southerly, 11-second period, light offshore winds again, with energy at 507 (moderate to strong). Glassy conditions in the afternoon.

Wednesday the 30th sees a 6ft south swell with a 17-second period. It’s clean but there’s a bit of a cross-shore breeze, so it’s not perfect—still, the energy is 2098 (very strong), and the sets will have some serious push.

Best on offer? Monday September 21st without a doubt. Clean, powerful, and offshore. A close second is Monday the 28th for the bigger, clean swell.

Keep your eye on that 21st—it's the one.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Heavy rain (total 20mm), heaviest during Thu night. Very mild (max 14°C on Thu night, min 8°C on Thu night). Winds increasing (calm on Sat afternoon, strong winds from the SSW by Sun morning).

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
1
2
1
1
2
1
0
0
0
0
0
0
2
1
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)
1.6
S
12
1.4
S
11
1.3
S
10
1.1
S
9
0.9
SSE
9
0.8
SSE
9
0.9
SE
12
0.8
SE
10
0.7
SE
9
0.5
SE
14
0.9
SE
12
2.3
S
7
1.1
SE
8
1.5
S
6
1.9
S
8
0.8
S
14
1.2
S
12
1.7
S
6
1.7
S
8
Wave Graph
Metric surfscale
Energy kJ
699
434
332
207
113
94
224
138
87
99
252
481
145
188
413
261
390
204
373
Wind (km/h)
10
NNW
5
NNE
20
ENE
10
NNW
5
WNW
10
ENE
15
NW
15
NNW
15
N
10
WSW
30
SSW
40
SSW
25
SW
15
WSW
5
S
20
WNW
25
WSW
35
SSW
20
WSW
Wind State
cross-off
off
cross-off
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross-on
on
on
cross-on
cross-on
cross-on
cross
cross-on
on
cross-on
High Tide
8:30AM1.77m
8:52PM1.71m
9:14AM1.76m
9:39PM1.68m
9:58AM1.72m
10:25PM1.64m
10:45AM1.66m
11:11PM1.59m
11:34AM1.60m
11:55PM1.52m
12:25PM1.54m
00:41AM1.44m
Low Tide
2:19AM0.27m
2:43PM0.29m
3:05AM0.33m
3:31PM0.34m
3:51AM0.39m
4:19PM0.39m
4:38AM0.42m
5:05PM0.42m
5:24AM0.45m
5:53PM0.44m
6:09AM0.46m
6:41PM0.45m
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
heavy rain
light rain
cloud
part cloud
clear
cloud
part cloud
rain showers
light rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:07
6:07
6:05
6:03
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
5:59
6:00
6:00
6:01
6:02
 mm
14
3
1
2
Temp °C
10
14
14
12
16
17
12
16
16
14
10
10
10
14
13
14
14
10
10
Feels °C
8
11
9
9
14
14
9
12
12
11
3
1
3
11
11
10
8
3
3
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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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