
Surf Forecasts:
Blacks Reef surf forecast from 8 Sep 2026:
- Best quality surf: Sunday 13 Sep, 12AM (local time) - 8ft (2.5m), 16s period, S swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 12AM (local time) - 8ft (2.5m), 16s period, S swell with 3,772 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 6AM (local time) - 5ft (1.6m), 8s 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 Wednesday (Sep 09) at 6AM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 0.6m and 9s. 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 2.5m 16s and forecast to arrive on Sunday (Sep 13) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Wednesday (Sep 09) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 9th Sep) | 5ft (1.6m) 8s |
| Best Surf | 12AM (Sun 13th Sep) | 8ft (2.5m) 16s |
| Most Powerful | 12AM (Sun 13th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Blacks Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s shaping up for the next couple of weeks.
We’re starting a bit slow, but there’s some real quality on the horizon. The first good window is Wednesday morning, September 9th, at Blacks Reef. We’ve got a clean 5 ft swell coming from the SE with a period of 8 seconds. The wind is glassy – WNW at 3 mph. It’ll be smooth as silk out there. The combined energy is moderate (327), enough to push you along. Good conditions for a beginner-friendly reef break.
Later Wednesday afternoon, the wind swings ENE and picks up to 9 mph, turning cross-offshore. The swell drops a touch to 5 ft, and the energy dips a bit (262). It’s still rideable, but the morning session is the one to target.
Thursday morning, September 10th, the swell drops to 3 ft with only 101 energy – pretty weak. Thursday afternoon is even smaller, down to 2 ft. Not worth paddling out for.
Friday, September 11th, kicks off with a bumpy 7 ft S swell at 7 seconds under a strong S wind at 12 mph. That’s onshore and messy. The energy jumps to 589, but it’s blown out. Friday afternoon sees a weird mix: a tiny 2 ft S swell with a very long 18-second period, but cross-onshore wind. The period is so long it’ll be hard to catch at this reef, especially with the short period swell mixing in.
Saturday, September 12th, is a write-off – strong onshore winds and rain, with swell energy all over the place but no quality.
Now, Sunday, September 13th, brings a bigger S swell – 8 ft in the morning, building to 8 ft in the afternoon, with a long 16-second period. The energy is strong (2900 morning, 3784 afternoon). But the wind is onshore and cross-onshore, so it’s choppy and lumpy. At over 8 ft, this is expert-only territory, and the wind is ruining it. Not recommended.
The real standout is Monday, September 14th. This is the best on offer. Morning sees a clean 7 ft S swell from the south, 12-second period, with a light NW cross-offshore wind at 6 mph. Energy is strong (1315). The afternoon is even better: 6 ft S swell, 13-second period, with a glassy ENE wind at 3 mph. The water temp is about average for this time of year – no big anomaly. Conditions are excellent for experienced surfers. This is the day to clear your schedule.
Tuesday, September 15th, is a nice little recovery. Morning has a 4 ft S swell with cross-shore wind, but the afternoon turns glassy with a 4 ft S swell. It’s smaller, but clean.
From Wednesday, September 16th, through to Sunday, September 20th, it’s a rough patch. Strong winds, onshore or cross-onshore, and lumpy seas. There are a few glimpses of bigger swell energy (like 1658 on Monday, September 21st), but the wind is always cross-shore and messy. Not worth it.
Then, Tuesday, September 22nd – this is a huge call. We’re looking at a 13 ft S swell hitting the reef. The combined energy is massive (3581 morning, 3955 afternoon). The wind is offshore and glassy in the morning (NE at 3 mph), and cross-offshore in the afternoon. But here’s the thing: at 13 ft, this is way too big for Blacks Reef. It’s only for absolute experts, and even then, it might be a washing machine. The file says it’s too big for this break. If you’re not a pro, sit this one out.
Wednesday, September 23rd, the swell drops to 6 ft with a cross-offshore NW wind. Clean waves, moderate energy (818). Much more manageable. Thursday, September 24th, fades out with a tiny 2 ft S swell and onshore wind.
Overall, the best bet is Monday, September 14th. If you’re a hardcore charger, Tuesday, September 22nd is a monster, but only for the very brave.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Thu night. Very mild (max 16°C on Thu morning, min 8°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat morning. Very mild (max 15°C on Mon afternoon, min 7°C on Sat night). Winds decreasing (fresh winds from the SW on Sat morning, calm by Sun night). | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSW 15 | S 7 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 14 | S 12 | S 13 | S 12 |
Wave Graph | |||||||||||||||||||
423 | 284 | 221 | 125 | 79 | 55 | 74 | 377 | 240 | 222 | 212 | 529 | 3772 | 2900 | 3311 | 2078 | 1311 | 1218 | 762 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | cross-off | cross-off | cross-on | cross-on | on | cross-on | cross-off | on | on | cross-off | cross-on | on | glassy | cross-off | cross-off | cross |
High Tide | 3:14AM1.61m | 3:41PM1.74m | 4:12AM1.62m | 4:37PM1.75m | 5:08AM1.63m | 5:33PM1.75m | 6:03AM1.67m | 6:25PM1.75m | 6:56AM1.71m | 7:15PM1.74m | 7:45AM1.75m | 8:04PM1.73m | |||||||
Low Tide | 9:05PM0.15m | 9:27AM0.13m | 10:02PM0.13m | 10:25AM0.11m | 10:59PM0.13m | 11:19AM0.11m | 11:53PM0.14m | 12:11PM0.13m | 00:45AM0.17m | 1:02PM0.18m | 1:33AM0.22m | 1:52PM0.24m | 2:19AM0.27m | ||||||
— | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | |
— | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | |
mm | — | — | — | — | — | — | 6 | 3 | — | — | 3 | — | — | — | — | — | — | — | — |
Temp °C | 10 | 12 | 12 | 11 | 16 | 15 | 12 | 10 | 11 | 11 | 11 | 10 | 8 | 12 | 12 | 10 | 14 | 15 | 13 |
Feels °C | 7 | 10 | 8 | 7 | 13 | 13 | 10 | 5 | 9 | 7 | 4 | 4 | 5 | 8 | 8 | 8 | 12 | 13 | 10 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | S 7 | S 7 | S 17 | S 16 | S 16 | S 16 | S 16 | S 14 | S 12 | S 13 | S 12 |
423 | 284 | 221 | 125 | 79 | 55 | 34 | 33 | 142 | 45 | 212 | 529 | 3772 | 2900 | 3311 | 2078 | 1311 | 1218 | 762 | |
Swell 2 Height (m) Direction Period (s) | SSW 9 | S 9 | S 8 | SSW 8 | S 8 | S 8 | SSW 15 | S 19 | SE 6 | ESE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 12 | E 8 | E 9 | E 12 | NE 5 |
118 | 39 | 37 | 23 | 22 | 21 | 74 | 179 | 39 | 40 | 14 | 13 | 7 | 29 | 14 | 1 | 1 | 11 | 9 | |
Swell 3 Height (m) Direction Period (s) | NE 9 | E 15 | E 15 | NE 4 | ENE 8 | NE 7 | ENE 8 | ENE 13 | S 18 | S 18 | SE 7 | ENE 13 | ENE 12 | ENE 8 | ENE 8 | E 12 | E 12 | E 8 | E 11 |
3 | 4 | 4 | 2 | 6 | 8 | 6 | 34 | 240 | 222 | 7 | 16 | 15 | 7 | 7 | 3 | 3 | 1 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 2 | NW 4 | — | — | S 7 | — | N 3 | SSW 5 | S 6 | — | — | SSW 8 | — | — | NE 3 | — |
— | — | — | 1 | 8 | — | — | 377 | — | 2 | 61 | 188 | — | — | 473 | — | — | 3 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 0 | 2 | 0 | 9 | 10 | 3 | 73 | 3 | 0 | 114 | 44 | 0 | 33 | 14 | 0 | 0 | 0 | 3 |
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.










