Blacks Reef Surf Break

Lat Long: 39.07° S 177.80° E

Blacks Reef Surf Forecast and Surf Report

Issued: 11 pm 16 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 16 Jul 2026:

  • Best quality surf: Saturday 18 Jul, 6PM (local time) - 7ft (2.1m), 23s period, S swell with glassy winds.
  • Most powerful swell: Saturday 18 Jul, 9PM (local time) - 7.5ft (2.3m), 21s period, S swell with 4,741 kJ wave energy.
  • Next surfable swell (1★+): Friday 17 Jul, 9AM (local time) - 5ft (1.6m), 16s 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 Friday (Jul 17) at 9AM. The primary swell is predicted to be 1.6m and 16s period with a secondary swell of 0.7m and 7s. 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 2.3m 21s and forecast to arrive on Saturday (Jul 18) at 9PM. Winds are predicted to be cross-shore 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 21) at 3AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 17th Jul)5ft (1.6m) 16s
Best Surf 6PM (Sat 18th Jul)7ft (2.1m) 23s
Most Powerful 9PM (Sat 18th Jul)7.5ft (2.3m) 21s

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


The Lowdown

Alright, Rusty here. Let’s get into it.

We’ve got a solid run of south swell heading our way, but this isn’t one for the faint-hearted. The standout window is this Friday the 17th and into the weekend, with a hefty groundswell pushing in. Blacks Reef is the main player here, and it’s looking like a jetty for experienced surfers only.

Friday morning on the 17th is the pick of the bunch. We’re looking at a 5ft SE groundswell with a very long 16-second period, and it’s glassy. The water temperature is about average for the time of year, nothing unusual. The combined energy is strong at 1445, and with that glassy wind, the reef will be offering up some clean, powerful lines. It’s a bit big for beginners, but for the crew that knows what they’re doing, it’s going to be firing. Crowds are often here, so expect company.

Friday afternoon stays clean with a cross-off breeze, and the swell bumps up to 6ft, still with that long 16-second period. Energy jumps to 1854. This is still excellent, expert-only territory.

Saturday the 18th is a step down in quality. The wind goes cross-shore in the morning, and while the swell is still 5ft from the SE, the period drops to 14 seconds. The combined energy is still moderate at 1431, but the wind is just not as clean. The afternoon brings a weird shift: a 4ft S swell with a super long 24-second period and onshore wind. That long period at a reef can be a bit tricky, and the wind is ruining it. This one’s a pass.

Sunday the 19th sees the swell build again – 7ft from the S with an 18-second period in the morning. That’s a lot of water moving, with combined energy hitting 3239. But it’s a cross-on wind, so it’ll be a bit lumpy. Definitely only for experts, and the wind is a buzzkill. Afternoon is similar but smaller.

Monday the 20th and Tuesday the 21st are a mixed bag. Monday is cross-on and the swell is dropping. Monday morning is 6ft S (1616 energy), but that wind is a nuisance. Tuesday morning is bigger at 8ft S (2907 energy), but it’s raining and cross-shore. The real bright spot on Tuesday is the afternoon: the wind goes glassy, the swell is 7ft S (2097 energy), and the conditions are excellent. That’s a solid session for the experienced.

After Tuesday, things drop off. Wednesday the 22nd is much smaller, with weak energy in the 500s and 300s, and the wind is either cross-on or onshore. Not worth paddling out. Thursday and Friday are tiny, with energy barely cracking 100. Small, clean but very ordinary.

The following week from the 25th of July onward is a letdown. The swell is small and inconsistent. There’s a brief moment on Saturday the 25th afternoon with a 3ft SE swell, a 17-second period, and clean cross-off wind – that’s the best of a weak bunch. The energy is 352, which is weak. The 26th Sunday afternoon has glassy conditions with a 3ft SE swell, but it’s still small. The rest of that week is a write-off: onshore winds, rain, and tiny, weak surf. The 27th Monday is a mess with strong onshore winds and poor surf.

The best of the best is Friday the 17th morning. That’s your session. After that, Tuesday the 21st afternoon is the next real standout. The rest is for the die-hards or the kite surfers when the wind is up and the waves are messy.

Stay safe out there.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Fri morning, min 8°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 14mm), heaviest on Tue morning. Very mild (max 12°C on Mon morning, min 9°C on Mon night). Wind will be generally light.

Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
4
4
4
3
3
4
4
3
4
3
3
4
3
4
4
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SE
16
1.6
SE
16
1.7
SE
16
1.7
SE
15
1.6
SE
14
1.1
S
24
2.3
S
20
2.1
S
18
1.9
S
17
1.8
S
16
1.8
S
15
1.6
S
14
2.5
S
19
2.3
S
16
2.1
S
15
1.7
S
14
1.3
S
13
1.1
S
12
1
S
11
Wave Graph
Metric surfscale
Energy kJ
976
1350
1366
1262
992
1344
4307
2859
2142
1626
1447
1072
4378
2795
2029
1036
529
342
242
Wind (km/h)
10
SSW
5
NNW
10
E
10
NNE
10
W
5
S
10
WNW
10
WSW
5
SSW
10
N
10
W
10
SSW
10
WNW
10
ESE
5
WNW
10
N
10
W
10
SW
10
W
Wind State
on
glassy
cross-off
off
cross
on
cross
cross-on
on
off
cross-on
on
cross
cross
glassy
cross-off
cross-on
on
cross
High Tide
7:42AM1.78m
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
Low Tide
1:34AM0.06m
1:47PM0.03m
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
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
cloud
clear
part cloud
mod rain
mod rain
rain showers
part cloud
cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:22
7:22
7:20
7:20
7:20
<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
 mm
6
6
2
Temp °C
12
13
13
10
11
12
10
11
11
10
12
12
10
10
11
11
11
11
10
Feels °C
9
12
11
7
8
10
8
9
9
8
9
10
8
8
10
10
8
8
8
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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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