
Surf Forecasts:
Blacks Reef surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 13 Sep, 12AM (local time) - 15ft (4.5m), 14s period, SSW swell with cross-onshore winds.
- Most powerful swell: Sunday 13 Sep, 12AM (local time) - 15ft (4.5m), 14s period, SSW swell with 7,536 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 12AM (local time) - 2.5ft (0.7m), 10s 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 Sunday (Sep 06) at 12AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.5m and 12s. 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 4.5m 14s and forecast to arrive on Sunday (Sep 13) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Monday (Sep 07) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 6th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 12AM (Sun 13th Sep) | 15ft (4.5m) 14s |
| Most Powerful | 12AM (Sun 13th Sep) | 15ft (4.5m) 14s |
Table - best surf conditions forecast for Blacks Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what this next stretch has got for us.
So, the only spot in the mix for this whole period is Blacks Reef. It's a reef break, very consistent and exposed to the south swell. Right off the bat, things are looking pretty flat and average. For the first few days, there's barely any push. We've got tiny waves and ordinary conditions. Honestly, not worth paddling out for. Saturday the 5th and Sunday the 6th are a real letdown with small waves, and Monday the 7th is just poor with onshore wind. We're in a bit of a dead zone here.
Things start to get a little more interesting mid-week. Wednesday the 9th is the first real standout. We’ve got a clean 5 ft swell from the SSE with that period at 8 seconds. The real winner here is the wind – glassy in the morning and a nice offshore breeze in the afternoon. That kind of clean, lined-up reef break is what we live for. The combined swell energy is moderate (337), so there’s some decent push. The water is around 55°, which is about average for this time of year.
Now, the second week gets raw but mostly for the wrong reasons. There’s a massive amount of energy flooding in. On Sunday the 13th, we see an 12 ft S swell with a very long 16-second period. That is serious, deep ocean groundswell energy (5888!). Wind is light, so the faces will be clean, but this is expert territory. 12 ft at a reef is no joke. That trend continues Monday the 14th with a 13 ft S swell and Tuesday 15th with 8 ft. It's all big, but the wind is mostly okay. For most of us, it’s gonna be a window licking session.
Further out, Saturday the 19th morning has a 6 ft S swell with the wind flat calm—glass. That’s a beautiful call, with very good conditions expected. Combine that with the low tide, and it's a chance for some truly epic, empty-feeling waves if you time it right.
But hold on… Sunday the 20th is a monster. The forecast is showing an 18 ft S swell with a 17-second period from the far south. That’s 15,873 on the energy scale. The morning is glassy, but it’s just too big. Unless you’re charging with the big boys, it’s a washout. Save your energy.
If there's one window to lock in, it’s Wednesday the 9th. That's your best bet for a fun, manageable, clean session. If you're an experienced surfer, don't sleep on Saturday the 19th morning.
- Rusty
Short Range ForecastModerate rain (total 15mm), heaviest on Mon afternoon. Very mild (max 18°C on Sun morning, min 10°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Thu morning, min 7°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the WSW by Thu night). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | SSW 7 | S 10 | SSW 10 | SSW 18 | S 17 | S 16 | S 16 | SSW 9 | SSW 9 | S 9 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSW 16 | SSW 8 | SSW 10 | S 9 |
Wave Graph | ||||||||||||||||||||
41 | 92 | 102 | 104 | 147 | 47 | 44 | 1323 | 1361 | 842 | 505 | 333 | 280 | 135 | 62 | 35 | 84 | 1267 | 1270 | 440 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | on | on | on | on | glassy | off | cross-off | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 00:17AM1.65m | 12:46PM1.73m | 1:15AM1.63m | 1:45PM1.73m | 2:15AM1.61m | 2:43PM1.74m | 3:14AM1.61m | 3:41PM1.74m | 4:12AM1.62m | 4:37PM1.75m | 5:08AM1.63m | 5:33PM1.75m | ||||||||
Low Tide | 6:09PM0.23m | 6:29AM0.21m | 7:08PM0.21m | 7:26AM0.19m | 8:07PM0.18m | 8:26AM0.16m | 9:05PM0.15m | 9:27AM0.13m | 10:02PM0.13m | 10:25AM0.11m | 10:59PM0.13m | 11:19AM0.11m | 11:53PM0.14m | |||||||
— | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | |
5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | |
mm | — | — | — | — | — | — | 5 | 8 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 18 | 17 | 16 | 17 | 12 | 12 | 11 | 11 | 11 | 12 | 13 | 12 | 16 | 14 | 11 | 13 | 14 | 13 |
Feels °C | 11 | 8 | 15 | 13 | 14 | 14 | 8 | 9 | 7 | 7 | 8 | 9 | 9 | 8 | 12 | 9 | 5 | 8 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | S 10 | SSW 10 | SSW 9 | S 17 | SSW 10 | NE 6 | NE 6 | S 9 | S 15 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSW 16 | ENE 13 | S 18 | S 9 |
41 | 92 | 102 | 25 | 147 | 36 | 24 | 9 | 1124 | 4 | 505 | 333 | 280 | 135 | 62 | 35 | 84 | 34 | 164 | 440 | |
Swell 2 Height (m) Direction Period (s) | SSW 9 | S 12 | S 18 | SSW 18 | E 10 | S 16 | SSW 10 | — | S 15 | NE 16 | ENE 9 | ENE 7 | NE 9 | NE 4 | S 8 | S 8 | SE 7 | SE 8 | ENE 13 | S 18 |
28 | 78 | 25 | 104 | 2 | 47 | 32 | — | 4 | 10 | 8 | 5 | 12 | 5 | 23 | 12 | 13 | 2 | 17 | 248 | |
Swell 3 Height (m) Direction Period (s) | S 15 | NE 4 | E 10 | E 10 | — | — | S 16 | — | NE 16 | — | E 17 | E 15 | E 15 | NE 9 | NE 8 | NE 7 | NE 8 | SE 8 | NE 13 | ENE 13 |
17 | 2 | 2 | 2 | — | — | 44 | — | 10 | — | 6 | 4 | 4 | 20 | 15 | 7 | 17 | 2 | 46 | 17 | |
Wind waves Height (m) Direction Period (s) | NE 4 | NW 3 | N 3 | — | N 4 | NE 6 | W 3 | SSW 9 | SSW 9 | S 9 | — | — | — | NNW 3 | NW 3 | WNW 3 | W 4 | SSW 8 | SSW 10 | WNW 4 |
1 | 2 | 2 | — | 14 | 47 | 8 | 1323 | 1361 | 842 | — | — | — | 3 | 3 | 7 | 19 | 1267 | 1270 | 13 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 3 | 0 | 45 | 89 | 41 | 75 | 89 | 3 | 0 | 0 | 3 | 11 | 65 | 10 | 41 | 3 | 10 |
Best forecast wave conditions in Gisborne and Mahia | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.










