
Surf Forecasts:
Blacks Reef surf forecast from 3 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 3AM (local time) - 7ft (2.1m), 10s period, S swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 6PM (local time) - 11ft (3.5m), 11s period, S swell with 2,807 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 9AM (local time) - 3ft (0.9m), 8s period with SSW 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 (Sep 05) at 9AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m and 15s. 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 3.5m 11s and forecast to arrive on Monday (Sep 07) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Monday (Sep 07) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sat 5th Sep) | 3ft (0.9m) 8s |
| Best Surf | 3AM (Tue 8th Sep) | 7ft (2.1m) 10s |
| Most Powerful | 6PM (Mon 7th Sep) | 11ft (3.5m) 11s |
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 Blacks Reef has got cooking for us over the next couple of weeks.
We’ve got a bit of a mixed bag on the cards. The week kicks off with a solid push of south swell energy, but the wind is going to play games with us before we get any real clean, rideable waves. The water’s sitting at 55°F and that’s a bit colder than normal for this time of year, so don’t forget the booties if you’re heading out.
Thursday the 3rd is where you want to be if you’ve got some experience under your belt. Thursday morning sees a clean 6ft south swell with a lovely long 13-second period. That’s proper groundswell energy, and the combined energy reading is strong at 1077. The wind is a light northwesterly, keeping the surface clean. This spot is a reef break, so that long period will wrap in nicely. It’s a beginner-friendly spot, but at this size it’s more for the experienced crew. Expect crowds here often, so get out early. Thursday afternoon drops a touch to 5ft, still clean, but the energy eases off a bit.
Friday the 4th and Saturday the 5th are a write-off. The swell drops right away, and the wind picks up, making it ordinary. Sunday the 6th stays small and weak, with a weird mix of very short and very long period swells that just don’t add up to much.
Monday the 7th gets a little interesting, but not for us. A big 10ft south-southwest swell rolls in Monday afternoon, but with strong onshore wind at 19 mph and a messy 9-second period, the combined energy hits 1400. It’s big, but blown out completely. This is more of a kite-surfing setup than a paddle session.
There’s a gap of a few days with nothing really worthwhile until Tuesday the 8th. Tuesday morning will be okay – 6ft south swell at 9 seconds, clean with a light north-northwesterly, energy at 454. It’s surfable, but nothing to write home about.
Now, the real standout on the horizon, and I mean the one you circle on the calendar, is Sunday, September 13th. That morning we’re looking at a massive 18ft south swell with a very long 14-second period. The combined energy is off the charts at 16938. But here’s the honest truth: the wave comment says the swell is predicted to be too big for this break. This is a reef, and that size will be critical. Only absolute experts with the right gear and local knowledge should even think about it. The wind is a moderate cross-onshore, so it won’t be clean either. This one is raw power, not a friendly wave.
The following Monday the 14th is a much better bet for the skilled surfer. Monday afternoon turns glassy with a light southeasterly, and a 6ft south swell at a solid 12-second period. The energy is strong at 1081. That’s clean, powerful, and manageable for experienced surfers. That’s your best all-round session in the second week.
After that, the swell stays up and down through to the 18th, but the wind keeps the quality poor, with big, lumpy, onshore conditions dominating. There’s nothing else that really stands out as a must-surf.
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Thu afternoon, min 9°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sun night. Very mild (max 17°C on Tue afternoon, min 8°C on Mon night). Winds decreasing (fresh winds from the SSW on Mon morning, calm by Tue night). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
AM | 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) | S 13 | S 13 | S 12 | S 11 | S 10 | S 10 | SSW 8 | SSW 8 | S 9 | SSW 10 | SSW 17 | S 17 | S 16 | SSW 9 | S 10 | S 9 | S 8 | S 8 | S 8 | S 10 | S 10 |
Wave Graph | |||||||||||||||||||||
1077 | 613 | 325 | 146 | 71 | 29 | 89 | 87 | 73 | 102 | 100 | 52 | 46 | 1400 | 1115 | 450 | 266 | 127 | 72 | 50 | 67 | |
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 | cross-off | cross-off | cross | cross-off | cross-off | off | cross | on | on | cross-off | cross | cross-on | cross-off | cross | cross |
High Tide | 9:59AM1.73m | 10:30PM1.68m | 10:50AM1.74m | 11:22PM1.67m | 11:46AM1.74m | 00:17AM1.65m | 12:46PM1.73m | 1:15AM1.63m | 1:45PM1.73m | 2:15AM1.61m | 2:43PM1.74m | 3:14AM1.61m | 3:41PM1.74m | ||||||||
Low Tide | 4:20PM0.25m | 4:42AM0.24m | 5:13PM0.25m | 5:34AM0.23m | 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 | ||||||||
6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | |
— | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 14 | 17 | 18 | 14 | 14 | 15 | 13 | 16 | 16 | 16 | 15 | 11 | 11 | 16 | 17 | 12 | 16 | 17 | 11 |
Feels °C | 15 | 16 | 10 | 12 | 13 | 10 | 12 | 11 | 9 | 12 | 12 | 12 | 13 | 4 | 6 | 12 | 13 | 11 | 12 | 13 | 7 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | S 11 | S 10 | S 10 | SSW 8 | SSW 8 | S 9 | SSW 10 | S 10 | SSW 12 | NE 6 | NE 6 | S 10 | S 9 | S 8 | S 8 | S 8 | SSE 7 | S 10 |
1077 | 613 | 325 | 146 | 71 | 29 | 89 | 87 | 73 | 102 | 48 | 50 | 11 | 6 | 1115 | 450 | 266 | 127 | 72 | 30 | 67 | |
Swell 2 Height (m) Direction Period (s) | NE 9 | NE 10 | E 10 | E 10 | NNE 4 | NNE 5 | S 15 | S 15 | NE 5 | S 18 | SSW 17 | S 17 | SSW 10 | NE 9 | SSW 16 | S 15 | S 15 | NE 5 | SSW 10 | S 10 | SE 7 |
14 | 4 | 2 | 2 | 1 | 2 | 17 | 17 | 8 | 55 | 100 | 52 | 20 | 3 | 24 | 4 | 4 | 8 | 18 | 50 | 14 | |
Swell 3 Height (m) Direction Period (s) | — | — | ENE 10 | S 20 | S 17 | S 16 | E 10 | E 10 | E 10 | NE 4 | E 10 | E 10 | S 16 | — | SSW 15 | NE 16 | E 16 | S 13 | NE 6 | E 15 | NE 7 |
— | — | 10 | 8 | 24 | 20 | 2 | 2 | 2 | 1 | 2 | 2 | 46 | — | 21 | 10 | 5 | 4 | 6 | 4 | 14 | |
Wind waves Height (m) Direction Period (s) | NW 3 | — | NW 3 | NW 3 | WNW 4 | SW 4 | NW 3 | — | WNW 3 | NW 3 | NNW 3 | NE 5 | NW 3 | SSW 9 | — | NNE 7 | NNE 4 | WNW 3 | — | NE 8 | WSW 4 |
7 | — | 3 | 5 | 11 | 12 | 2 | — | 3 | 2 | 3 | 37 | 2 | 1400 | — | 11 | 12 | 1 | — | 14 | 12 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 9 | 33 | 33 | 10 | 0 | 0 | 9 | 0 | 3 | 0 | 10 | 127 | 3 | 0 | 9 | 3 | 33 | 3 | 3 |
Best forecast wave conditions in Gisborne and Mahia | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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.










