Surf Forecasts:
Blacks Reef surf forecast from 22 Aug 2026:
- Best quality surf: Monday 24 Aug, 3PM (local time) - 6ft (1.8m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 7ft (2.1m), 15s period, S swell with 1,860 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 9AM (local time) - 5ft (1.5m), 9s 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 Monday (Aug 24) at 9AM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.3m and 13s. 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 2.1m 15s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Saturday (Aug 29) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 24th Aug) | 5ft (1.5m) 9s |
| Best Surf | 3PM (Mon 24th Aug) | 6ft (1.8m) 15s |
| Most Powerful | 9PM (Mon 24th Aug) | 7ft (2.1m) 15s |
Table - best surf conditions forecast for Blacks Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here with the full story on what’s coming down the line. We’ve got a nice stretch of swell on the way, with one real standout window in the middle of it. The water’s running a bit colder than normal for this time of year, about 12°, so you might want to grab a thicker suit or a bootie.
Let’s start with this Saturday afternoon, the 22nd. Blacks Reef is the spot right off the bat. We’ve got a clean 4ft swell from the south, and the wind is glassy – dead still. The surf is small but clean, with moderate energy (345). A real nice way to ease into the weekend on a longboard or a funboard.
Sunday the 23rd is a washout. The wind cranks up from the northwest at 15 mph, cross-off but way too strong, and the swell drops off quick. Monday the 24th is where it gets interesting. The morning sees a clean 5ft south-southwest swell with light cross-off wind. It’s good, but the *real* highlight is Monday afternoon. That’s when a long-period south swell shows up at 6ft with a 15-second period. The wave energy is strong (1499), and the winds go light and cross-off. This is excellent surf, but at that size, it’s for experienced surfers only. The long period means proper groundswell lines coming through.
Tuesday the 25th and Wednesday the 26th are still fun but a bit smaller and bumpier. Swell hangs around the 4ft to 5ft mark with a bit of a cross or cross-off breeze. Definitely rideable.
Now, here’s the main event. Thursday the 27th is going to be a beauty. Morning session is glassy with a 4ft south swell and a long 16-second period – very good surf and clean as can be. But Thursday afternoon is the peak: 5ft south swell, still a 16-second period, and a light offshore breeze from the east. The wave energy is very strong (1104), and conditions are excellent for experienced surfers. This is your best wave of the whole forecast right here.
Friday the 28th keeps it pumping with a solid 5ft south swell in the morning under a clean cross-off wind. Still excellent for the crew who know what they’re doing. Saturday the 29th sees the swell back off a touch to 3ft to 4ft, but we score a moderate offshore wind from the north-northeast. Clean and workable all day.
We hit a quiet patch from Sunday the 30th through to Tuesday the 1st. The swell sticks around but the wind gets messy and the period drops, leading to poor surf. There’s a few days there where it’s not worth paddling out.
The good news rolls back in on Tuesday the 1st of September. Morning brings back a solid 4ft south swell with a 13-second period under a light cross-off breeze. Afternoon goes glassy with a tiny 3ft swell but a *massive* 18-second period. That’s a very long period groundswell, which will be lined-up and peeling at this reef, but expect long waits between sets. Very good conditions for the patient surfer.
Wednesday the 2nd is smaller and a bit windier. Thursday the 3rd is a mixed bag with light rain but a clean afternoon session in the 4ft range. The last real standout pops up on Sunday the 6th of September. We get a morning window with a 7ft south swell, a clean offshore breeze from the north-northeast, and very strong wave energy (1059). That’s a big one – definitely expert territory. It’s a long way out, so keep an eye on it, but it looks promising.
Bottom line: Thursday the 27th is the day to lock in.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat afternoon, min 9°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Thu afternoon, min 12°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 12 | S 11 | S 10 | SE 13 | SE 13 | SSW 9 | S 15 | S 15 | S 13 | S 12 | S 11 | S 17 | S 16 | S 16 | S 16 | S 16 | S 17 | S 16 | S 15 | S 13 |
Wave Graph | ||||||||||||||||||||
319 | 189 | 104 | 50 | 43 | 315 | 1430 | 1568 | 653 | 418 | 247 | 283 | 334 | 488 | 912 | 1092 | 1281 | 1149 | 711 | 451 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:22AM1.51m | 1:56PM1.54m | 2:10AM1.45m | 2:43PM1.52m | 2:58AM1.40m | 3:28PM1.49m | 3:46AM1.38m | 4:13PM1.49m | 4:33AM1.38m | 4:59PM1.50m | 5:22AM1.41m | 5:47PM1.53m | ||||||||
Low Tide | 7:20PM0.47m | 7:35AM0.46m | 8:10PM0.48m | 8:23AM0.46m | 8:57PM0.47m | 9:11AM0.44m | 9:43PM0.43m | 10:00AM0.41m | 10:29PM0.39m | 10:48AM0.36m | 11:15PM0.34m | 11:32AM0.32m | 00:03AM0.30m | |||||||
— | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | |
5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 12 | 15 | 16 | 12 | 13 | 14 | 12 | 16 | 17 | 13 | 17 | 17 | 15 | 17 | 18 | 14 | 18 | 20 | 14 |
Feels °C | 15 | 7 | 9 | 11 | 6 | 11 | 10 | 9 | 13 | 14 | 10 | 16 | 14 | 12 | 16 | 16 | 11 | 15 | 16 | 11 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 11 | S 10 | S 10 | SW 5 | SSW 9 | S 15 | S 15 | S 13 | S 12 | S 11 | S 10 | S 16 | S 16 | S 16 | S 16 | S 17 | S 16 | S 15 | S 13 |
319 | 189 | 104 | 50 | 18 | 315 | 1430 | 1568 | 653 | 418 | 247 | 130 | 334 | 488 | 912 | 1092 | 1281 | 1149 | 711 | 451 | |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 13 | SE 13 | SE 13 | SE 13 | ESE 13 | ESE 13 | ESE 13 | SE 13 | S 17 | S 15 | S 17 | S 9 | ESE 12 | ESE 11 | ESE 11 | E 10 | ESE 15 | ESE 15 | ESE 14 |
7 | 33 | 44 | 44 | 43 | 34 | 35 | 59 | 27 | 94 | 168 | 283 | 61 | 29 | 25 | 12 | 8 | 22 | 21 | 18 | |
Swell 3 Height (m) Direction Period (s) | ESE 14 | SE 8 | — | S 17 | SSE 9 | S 18 | ESE 13 | ESE 13 | NE 5 | ESE 13 | SE 12 | SE 13 | SE 13 | E 10 | SE 13 | — | E 16 | — | NE 9 | NE 9 |
19 | 3 | — | 6 | 17 | 6 | 34 | 34 | 1 | 16 | 24 | 27 | 26 | 2 | 7 | — | 5 | — | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | — | NW 3 | N 3 | NNW 4 | NW 4 | — | — | — | WNW 3 | N 4 | — | — | — | NNE 3 | — | — | — | — | — | N 3 |
— | 9 | 7 | 18 | 2 | — | — | — | 1 | 3 | — | — | — | 2 | — | — | — | — | — | 3 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 33 | 3 | 3 | 10 | 0 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Gisborne and Mahia | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











