Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 pm 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Blacks Reef sea temperature is
13.2° C
1.0° 

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 12 Jul 2026:

  • Best quality surf: Friday 17 Jul, 6PM (local time) - 7ft (2.2m), 15s period, S swell with offshore winds.
  • Most powerful swell: Friday 17 Jul, 6PM (local time) - 7ft (2.2m), 15s period, S swell with 2,096 kJ wave energy.
  • Next surfable swell (1★+): Monday 13 Jul, 6AM (local time) - 3ft (0.9m), 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 Monday (Jul 13) at 6AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.9m and 9s. 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 2.2m 15s and forecast to arrive on Friday (Jul 17) at 6PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Tuesday (Jul 14) at 3PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 13th Jul)3ft (0.9m) 11s
Best Surf 6PM (Fri 17th Jul)7ft (2.2m) 15s
Most Powerful 6PM (Fri 17th Jul)7ft (2.2m) 15s

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


Alright folks, Rusty here. Let’s see what this 16-day stretch has in store for us.

Alright, the first few days are pretty quiet – a gentle start with some small, clean waves on Monday the 13th. Conditions are nice but the swell is modest. The real action, though, starts to build later in the week. The standout window is shaping up to be from Friday the 17th right through to Monday the 20th. That’s where the magic is.

Let’s start with the early call. Monday the 13th at Blacks Reef is a nice little warm-up. We’re looking at a clean 3ft of south swell with a 10-second period, perfect for a beginner-friendly reef break. The wind is light and either cross-off or offshore, so the surface will be smooth. The wave energy is moderate (255) and dropping a bit in the afternoon, but it’s a good, easy session.

Tuesday the 14th drops off a bit. The swell drops to 2ft, still from the south, but the period stretches to 12 seconds. The morning is clean with offshore wind, but it’s ordinary. The afternoon gets even smaller. Wednesday the 15th is tiny – 1ft ESE swell, with glassy conditions in the afternoon. Not much to work with.

Thursday the 16th gets a bit messy. Wind picks up from the west-northwest, and we get a mix of swells. The energy jumps to 463 in the afternoon, but the cross-shore wind and 17-second period from the south-east will make it lumpy and tricky to read at this reef. Not a great day.

Now, here’s where it gets good. Friday the 17th is the first true standout. We’ve got a solid 5ft of south-east groundswell, with a very long 16-second period. The energy is strong (1204 in the morning, 2224 in the afternoon). And the wind… glassy. Both morning and afternoon. This is the kind of day that has you calling in sick. The water temp is about average for July, so a normal summer wetsuit or just a spring suit will do. For a beginner spot, 5ft is getting a bit big, but for experienced surfers, it’s excellent. The swell direction is south-east, which is mixing with the optimum south swell, so it’ll be working well.

Saturday the 18th is a letdown. The swell holds at 5ft, but the wind swings onshore and gets strong (35 km/h in the afternoon with rain). That’s a mess. The reef will be choppy and blown out. A day to stay home.

Sunday the 19th is another absolute winner. The swell drops slightly to 4-4ft, but it’s a pure south swell with a very long 21-second period in the morning. The energy is huge (1612). The morning has light offshore wind from the north, and the afternoon is dead calm – glassy. This is a dream session. The long period will make the waves powerful and clean, with long waits between sets. At Blacks Reef, that’s a beautiful thing.

Monday the 20th is the third standout. Back to 5ft of south swell, 19-second period, and glassy conditions in the morning. The energy is intense (2191). The morning is perfect. The afternoon gets a light cross-onshore, so take the morning off.

The week after that gets a bit more ordinary. Tuesday the 21st and Wednesday the 22nd have 5-6ft of south swell, but the wind is onshore or cross-onshore, making it lumpy. The energy is still strong (up to 1956), but the quality drops. Not worth the paddle-out for most.

Thursday the 23rd through Saturday the 26th is a poor stretch. Onshore winds, rain, and messy conditions. The swell drops to 3-4ft, but the wind is rubbish. The energy is moderate to weak. A skip.

Then we get a little pulse on Sunday the 26th. The morning is glassy again with 4ft of south swell, 11-second period. The energy is moderate (535). It’s a decent, clean option, but not as powerful as the big week. The crowd at Blacks Reef is often there, so expect company.

The final days, Monday the 27th and Tuesday the 28th, are back to small, clean 2-3ft waves. A nice, gentle finish for the beginners.

The real highlight is the Friday the 17th through Monday the 20th window. If you can only pick one, Sunday the 19th is the best of the bunch – the combination of that long-period south swell, glassy conditions, and manageable size is as good as it gets.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Wed afternoon, min 7°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Sat morning. Very mild (max 17°C on Thu afternoon, min 9°C on Fri night). Winds increasing (calm on Fri morning, fresh winds from the S by Sat morning).

Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sun
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
2
2
2
2
1
1
0
1
1
1
0
1
2
4
4
4
1
0
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
S
12
0.9
SE
9
0.8
S
10
0.7
S
13
0.5
S
12
0.4
SSW
12
0.3
ESE
10
0.4
ESE
11
0.4
ESE
11
0.5
ESE
13
0.7
ESE
15
0.9
SE
17
1.2
SE
16
1.6
SE
16
1.6
SE
16
2
S
13
1.5
SE
15
1.3
SE
14
1.3
SE
13
1.1
S
21
1.2
S
18
Wave Graph
Metric surfscale
Energy kJ
216
135
122
166
73
45
20
48
47
96
193
439
767
1149
1284
1298
924
726
570
1015
911
Wind (km/h)
10
N
10
NNW
10
NNE
15
N
15
N
10
NW
15
NW
10
NW
5
NNE
15
NW
20
WNW
15
WNW
10
W
5
WNW
5
E
10
NW
20
WSW
35
S
10
SSE
10
N
0
S
Wind State
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
glassy
cross-off
cross
cross
cross
glassy
glassy
cross-off
cross-on
on
cross-on
off
glassy
High Tide
3:46AM1.75m
4:14PM1.90m
4:46AM1.78m
5:14PM1.94m
5:45AM1.79m
6:14PM1.96m
6:44AM1.79m
7:11PM1.96m
7:42AM1.78m
8:06PM1.93m
8:36AM1.77m
8:58PM1.88m
9:27AM1.75m
Low Tide
9:39PM0.25m
10:00AM0.22m
10:38PM0.19m
11:01AM0.15m
11:37PM0.13m
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
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
light rain
rain showers
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:24
7:24
7:24
7:22
7:22
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:02
5:04
5:04
5:05
5:06
5:07
5:07
 mm
1
1
Temp °C
8
13
15
13
16
16
13
16
17
14
15
17
12
13
13
11
10
11
10
10
13
Feels °C
5
10
12
10
13
14
9
14
16
11
10
14
10
12
11
9
6
3
4
6
11
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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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