Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 5 am 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
12.7° C
1.2° 

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 4 Aug 2026:

  • Best quality surf: Friday 7 Aug, 9AM (local time) - 6ft (1.9m), 10s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 6AM (local time) - 18ft (5.5m), 12s period, S swell with 8,557 kJ wave energy.
  • Next surfable swell (1★+): Friday 7 Aug, 9AM (local time) - 6ft (1.9m), 10s period with SSE 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 Friday (Aug 07) at 9AM. The primary swell is predicted to be 1.9m and 10s period with a secondary swell of 0.6m and 18s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Blacks Reef in the next 16 days are 5.5m 12s and forecast to arrive on Wednesday (Aug 05) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Sunday (Aug 09) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 7th Aug)6ft (1.9m) 10s
Best Surf 9AM (Fri 7th Aug)6ft (1.9m) 10s
Most Powerful 6AM (Wed 5th Aug)18ft (5.5m) 12s

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


The Lowdown

Alright, Rusty here. Let’s take a look at what’s on the table for the next couple of weeks.

Well, I gotta be straight with you – the next few days are a write-off. We’ve got a big, sloppy, onshore mess for the first week, with a massive 13 ft to 16 ft swell from the south and howling 19 mph to 25 mph winds slamming right into the coast. That’s not surf, that’s a washing machine. The combined swell energy is monstrous, reading between 3975 and 7149, but it’s all for nothing with that wind. On Thursday (6th August) it finally starts to drop, but it’s still cross-onshore and choppy, so you’re better off waiting.

The real window opens up on Friday morning, 7th August. That’s our standout. The swell drops to a solid 6 ft from the SSE, but the magic is in the wind – a light, 3 mph offshore breeze from the NW. That’s going to groom Blacks Reef into something special. The period is a clean 10 seconds, so it’ll have some push. The water is a bit colder than normal at 55°F, which is no surprise for this time of year. The combined energy is still moderate at 1059, but with that offshore wind, the conditions will be clean and lined up. This is for experienced surfers only, as it’s a reef break and the size is solid.

Friday afternoon keeps the good times rolling with a 5 ft south swell, but now the period jumps to a very long 16 seconds. That’s groundswell, and with a light cross-offshore breeze from the ENE, it’ll be glassy. Best for point breaks and reefs; this should be some of the best shape of the week.

Saturday morning, 8th August, is still worth a look. 6 ft from the south, 12-second period, and a light offshore from the NW. It’s still clean, but the energy is dropping a bit. After that, the swell fades through the weekend into small, average conditions.

Then we hit a flat spell. From Sunday 9th through Monday 10th, the swell drops to 4 ft to 4 ft, and the wind and rain make it messy. The combined energy plummets to 399. Not worth paddling out.

The next chance appears on Wednesday afternoon, 12th August. It’s a modest 7 ft from the SSE with an 11-second period, and a light offshore from the ENE. The combined energy is 908. It’s not a blockbuster, but it’s clean. Then Thursday 13th August is a real treat – a glassy morning with 5 ft from the SE and zero wind. That’s a rare, perfect morning for a mellow session. The energy is weak at 389, but you won’t care with that clean water.

The end of the second week gets messy again. By Saturday 15th August, the wind turns onshore and the swell period drops to a short 6-8 seconds. That’s windswell and it’s junk. The combined energy stays low, around 352 to 459.

Then from Sunday 16th August onwards, it gets ugly. We’re talking about a 12 ft to 13 ft easterly swell with onshore wind howling at 25 mph. The combined energy jumps back up to 1745 or even 3632. But with that wind, it’s a mess. On Wednesday 19th August, the swell is 13 ft from the SE with a 11-second period, and the wind is light and offshore, but the file warns it’s predicted to be too big for this break. That’s a solid 11/10 on the energy scale (3818), but only for the experts with a death wish.

So, the takeaway: Friday the 7th is the gold standard. Get on it. Thursday the 13th is the sleeper pick for a glassy, easy session. Everything else is either blown out, too small, or too big.

Rusty.

Short Range Forecast

Moderate rain (total 17mm), heaviest on Tue morning. Mild temperatures (max 9°C on Thu afternoon, min 4°C on Thu night). Winds decreasing (strong winds from the SW on Tue night, light winds from the WNW by Thu night).

Days 4-6 Weather Summary

Moderate rain (total 14mm), heaviest on Sun night. Very mild (max 16°C on Sat afternoon, min 6°C on Fri morning). Wind will be generally light.

Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
2
1
3
4
4
4
4
2
2
1
2
3
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)
3
S
14
4
S
12
5
S
12
5
S
12
4
S
12
3
S
12
3
S
11
1.8
S
11
1.7
SSE
11
1.9
SSE
10
1.5
S
16
1.9
S
13
1.8
S
12
1.6
S
12
1.4
S
11
1.2
S
11
1.1
S
14
1.3
S
13
1.2
S
12
3
SSW
10
3.5
S
11
Wave Graph
Metric surfscale
Energy kJ
3972
4694
6730
7149
4829
2846
2032
776
643
749
1078
1285
989
722
475
326
515
582
383
2101
2802
Wind (km/h)
30
SSW
40
SW
40
SW
35
SSW
30
SSW
25
SW
20
WSW
20
SW
10
WNW
5
NW
10
ENE
10
NW
10
NW
10
W
15
N
25
NW
10
W
5
SE
15
SE
20
SSE
40
SE
Wind State
on
on
on
on
on
on
cross-on
on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
glassy
cross
cross-on
cross-on
High Tide
9:39AM1.59m
10:04PM1.65m
10:22AM1.63m
10:51PM1.66m
11:10AM1.67m
11:41PM1.67m
12:04PM1.70m
00:33AM1.67m
1:01PM1.74m
1:29AM1.67m
2:00PM1.77m
2:29AM1.68m
2:59PM1.81m
Low Tide
3:49PM0.29m
4:19AM0.27m
4:38PM0.30m
5:05AM0.28m
5:29PM0.31m
5:54AM0.28m
6:23PM0.31m
6:46AM0.27m
7:22PM0.29m
7:41AM0.25m
8:22PM0.24m
8:41AM0.22m
9:21PM0.19m
light rain
light rain
mod rain
light rain
light rain
rain showers
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
cloud
heavy rain
heavy rain
heavy rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:07
7:05
7:05
7:03
7:03
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:21
5:22
5:22
5:22
5:23
5:24
5:25
 mm
4
2
6
2
2
1
14
12
11
20
Temp °C
7
7
7
8
8
8
8
9
7
9
11
9
14
16
13
15
15
13
10
10
11
Feels °C
0
-3
-3
-1
0
1
3
4
4
7
7
6
11
13
8
12
12
12
7
5
6
  • 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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