Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 5 pm 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
13.0° 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 17 Jul 2026:

  • Best quality surf: Saturday 18 Jul, 9PM (local time) - 7.5ft (2.3m), 21s period, S swell with cross-offshore winds.
  • Most powerful swell: Monday 20 Jul, 9PM (local time) - 10ft (3.0m), 19s period, S swell with 5,960 kJ wave energy.
  • Next surfable swell (1★+): Saturday 18 Jul, 3AM (local time) - 5ft (1.6m), 15s period with SE 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 (Jul 18) at 3AM. The primary swell is predicted to be 1.6m and 15s period with a secondary swell of 1.3m and 14s. 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 3.0m 19s and forecast to arrive on Monday (Jul 20) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 22) at 12AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 18th Jul)5ft (1.6m) 15s
Best Surf 9PM (Sat 18th Jul)7.5ft (2.3m) 21s
Most Powerful 9PM (Mon 20th Jul)10ft (3.0m) 19s

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


The Lowdown

Right, listen up, crew. Rusty here. We’ve got one spot on the menu for the next 16 days, and it’s a bit of a mixed bag. Let’s get into it.

First up, our local wave is Blacks Reef. A reef setup, so it’s got that defined peak. The water’s sitting at 55°, which is a touch colder than average for this time of year, so you’ll want a decent wetsuit. The first real action kicks off on Friday, the 17th of July. We’ve got a solid 5ft swell rolling in from the SE, with a very long period of 16 seconds. That’s proper groundswell, packing a lot of punch – the combined energy is a hefty 1755. The wind is a light cross-off from the ENE, keeping things clean. This is excellent surf, but with that size and power, it’s one for the experienced crew only.

Moving into Saturday morning, the 18th, the swell hangs in at 5ft from the SE, but the period drops to 14 seconds and the wind goes cross-shore. It’s a bit messy, with some wind ripples. The afternoon looks rough with onshore wind, so that’s a pass.

Sunday the 19th, the morning has a nice 7ft S swell, period 18 seconds, and a cross breeze. The combined energy jumps to a strong 3233. It’s got the power, but the conditions are a bit so-so. The afternoon sees onshore wind and a smaller 6ft swell.

Now, the standout of the whole run. Tuesday the 21st of July. The morning is absolute gold. We’re looking at 8ft of S swell, period 16 seconds, and the wind is glassy – dead calm. That’s 3200 energy units of pure, clean, powerful swell. It’s a big wave, over 8ft, so this is strictly for the experts who know what they’re doing. The afternoon holds up clean too, with a cross-off breeze and 8ft swell. This is the window to clear your schedule for.

The rest of the week sees the swell drop. Wednesday the 22nd has a manageable 5ft, and by Thursday the 23rd we’re down to 3ft. The wind stays light and glassy at times, so it’s still surfable but small.

After that, we hit a long, flat spell. From Friday the 24th of July right through to Sunday the 27th, the conditions are poor, with strong winds and weak, messy swell. It’s a proper dead period. The combined energy drops below 500, and the wind is howling. Not worth looking at.

The pattern tries to pick up again around the 28th of July, with a 6ft SE swell, but the period is a short, choppy 7 seconds. It’s clean, but the wave quality won’t be there. The last few days of the month and into August have a small, short-period swell on offer, and mostly clean winds, but we’re talking 3-5ft waves with short periods. The combined energy is weak, generally under 500. There’s a chance for a fun little session on the 1st of August, with a glassy 4ft ESE swell, but don’t expect anything epic.

So, to sum it up: the absolute best is Tuesday the 21st of July at dawn. That’s the one. The rest of the first week has some clean, smaller waves, but the second week is mostly a write-off. Keep your eyes on the forecasts, but for now, that Tuesday morning is the session to aim for.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sun night. Very mild (max 13°C on Fri afternoon, min 8°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 12°C on Wed morning, min 8°C on Tue night). Wind will be generally light.

Fri
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
3
3
5
4
2
3
2
3
4
5
4
4
3
1
1
2
2
2
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
SE
16
1.6
SE
15
1.6
SE
14
1.1
S
24
2.3
S
20
2.1
S
18
1.8
S
17
1.6
S
16
1.8
S
15
2.4
S
19
3
S
18
2.5
S
16
2.3
S
15
1.8
S
14
1.4
S
12
1.2
S
12
1
S
11
0.8
S
10
0.9
SSE
13
0.9
S
11
Wave Graph
Metric surfscale
Energy kJ
1267
1171
992
1344
4307
2796
1903
1289
1434
4171
5349
3103
2338
1158
600
407
227
125
277
202
Wind (km/h)
10
ENE
10
N
10
W
10
SSW
5
NW
10
WNW
15
SSW
10
WSW
10
S
15
S
10
S
5
W
5
ENE
10
N
10
NW
10
S
10
WNW
5
NW
5
ENE
10
NW
Wind State
cross-off
off
cross
on
cross-off
cross
on
cross-on
cross-on
on
cross-on
glassy
cross-off
cross-off
cross-off
on
cross
glassy
glassy
cross-off
High Tide
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
11:59AM1.65m
00:24AM1.62m
12:54PM1.62m
1:14AM1.58m
Low Tide
2:28AM0.06m
2:42PM0.06m
3:21AM0.09m
3:36PM0.13m
4:12AM0.14m
4:30PM0.21m
5:02AM0.20m
5:23PM0.29m
5:51AM0.28m
6:15PM0.36m
6:39AM0.36m
7:08PM0.42m
clear
clear
clear
clear
clear
clear
clear
rain showers
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:22
7:20
7:20
7:20
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:06
5:07
5:07
5:07
5:08
5:09
5:10
 mm
2
Temp °C
13
10
12
12
10
12
12
11
12
11
10
11
11
9
12
12
10
12
13
10
Feels °C
11
7
10
9
8
8
9
9
8
7
6
9
8
5
10
9
8
10
11
6
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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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