
Surf Forecasts:
Blacks Reef surf forecast from 19 Jul 2026:
- Best quality surf: Tuesday 21 Jul, 3PM (local time) - 6.5ft (2.0m), 15s period, S swell with glassy winds.
- Most powerful swell: Monday 27 Jul, 6AM (local time) - 16ft (5.0m), 12s period, S swell with 6,698 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 3PM (local time) - 6.5ft (2.0m), 15s 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 Tuesday (Jul 21) at 3PM. The primary swell is predicted to be 2.0m and 15s period with a secondary swell of 0.6m and 11s. 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 5.0m 12s and forecast to arrive on Monday (Jul 27) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Jul 23) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 21st Jul) | 6.5ft (2.0m) 15s |
| Best Surf | 3PM (Tue 21st Jul) | 6.5ft (2.0m) 15s |
| Most Powerful | 6AM (Mon 27th Jul) | 16ft (5.0m) 12s |
Table - best surf conditions forecast for Blacks Reef over the next 16 days.
The Lowdown
Alright, let’s break it down in feet and miles per hour.
Only one spot is talking to us: Blacks Reef. It’s a reef break, fires up all the time, and loves a south swell. Water temp is about normal for the season.
First surf hits Monday morning, July 20th. We’re looking at a 6ft south swell with a 15-second period. That’s proper groundswell. Wind is light from the SSW, so it’s manageable. The energy is moderate (2018). By the afternoon, the swell is pushing 8ft from the south with a very long 19-second period, and the energy jumps to 4093. That’s a lot of water, but the wind is onshore with light rain. It’s a raw one.
Tuesday, July 21st is where the magic happens. The morning has a 8ft south swell (16s, 2706 energy) but the wind is cross-on from the west. Then the afternoon. The swell drops to 7ft, still from the south, with a 15-second period (1796 energy). And the wind goes glassy. Dead flat. That’s the cleanest window of the first week. The south swell and glassy conditions will have Blacks Reef looking like a postcard.
Wednesday, July 22nd keeps the glassy, clean vibe in the morning with a 4ft south swell and a 12-second period (540 energy). That’s a fun, easy wave.
From the afternoon of Wednesday the 22nd through Saturday the 25th, the surf fades out. The swell drops, the wind gets messy, and the energy numbers fall off. It’s a quiet few days.
Then the ocean gets angry. Sunday, July 26th through Tuesday, July 28th, the swell jumps to 10ft, 13ft, and even 16ft, but the wind is a gale or strong breeze from the SW, straight onshore. The energy numbers are massive (1712 to 7789), but it’s a mess. This is for experts only, or kite surfers. It’s too big and blown out for paddle surfing.
Wednesday, July 29th is the second standout. The wind turns to a light NW cross-offshore. We’ve got a 8ft southeast swell, with a 12-second period, and strong energy (2284). Both the morning and afternoon are clean and powerful. This is a proper, heavy session for the experienced crew.
Thursday, July 30th is a nice, clean drop-off. The swell goes from 6ft to 5ft, with glassy wind in the afternoon.
Things get small again through the end of July. Sunday, August 2nd brings a decent session. The morning has a 5ft SSW swell (12s, 859 energy) with a light NW cross-offshore, and the afternoon goes glassy and clean with a 6ft SSW swell (923 energy). A solid, clean day.
The run ends on Monday, August 3rd and Tuesday, August 4th with another pulse of big, stormy, onshore wind. The swell is 12ft to 13ft, but the wind is howling. Too big and messy.
So, the best on offer: Tuesday afternoon, July 21st for that glassy 7ft south swell, and Wednesday, July 29th for the big, clean 8ft southeast swell. Those are the ones.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Very mild (max 12°C on Sun night, min 7°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Fri morning, min 7°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the W by Sat morning). | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 16 | S 15 | S 19 | S 18 | S 16 | S 15 | S 13 | S 12 | S 12 | S 12 | S 11 | S 12 | SSW 10 | S 10 | E 9 | E 10 | E 11 | ESE 11 | SE 15 |
Wave Graph | |||||||||||||||||||
1452 | 1415 | 3752 | 4586 | 2609 | 1699 | 905 | 501 | 342 | 371 | 166 | 75 | 35 | 17 | 58 | 138 | 188 | 191 | 158 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | glassy | cross-off | glassy | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | off |
High Tide | 9:50PM1.81m | 10:17AM1.72m | 10:42PM1.74m | 11:07AM1.68m | 11:33PM1.68m | 11:59AM1.65m | 00:24AM1.62m | 12:54PM1.62m | 1:14AM1.58m | 1:46PM1.61m | 2:03AM1.55m | 2:36PM1.59m | 2:51AM1.51m | ||||||
Low Tide | 4:12AM0.14m | 4:30PM0.21m | 5:02AM0.20m | 5:23PM0.29m | 5:51AM0.28m | 6:15PM0.36m | 6:39AM0.36m | 7:08PM0.42m | 7:27AM0.42m | 8:00PM0.47m | 8:15AM0.47m | 8:50PM0.50m | |||||||
— | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | |
— | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — | — | 5:10 | — | — | 5:10 | — | — | 5:12 | — | |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 12 | 11 | 10 | 10 | 10 | 10 | 8 | 11 | 11 | 9 | 12 | 13 | 10 | 15 | 14 | 13 | 11 | 12 | 11 |
Feels °C | 9 | 7 | 6 | 6 | 7 | 8 | 6 | 9 | 8 | 7 | 9 | 10 | 6 | 11 | 10 | 10 | 4 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | S 19 | S 18 | S 16 | S 15 | S 13 | S 12 | S 12 | S 12 | S 11 | S 12 | SSW 10 | ENE 6 | E 9 | E 10 | E 11 | ESE 11 | ESE 11 |
1452 | 1415 | 3752 | 4586 | 2609 | 1699 | 905 | 501 | 342 | 371 | 166 | 75 | 35 | 12 | 58 | 138 | 188 | 191 | 158 | |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 11 | SE 10 | SE 11 | SSE 11 | NE 4 | S 10 | S 9 | S 9 | SSW 7 | SSW 7 | SE 15 |
244 | 169 | 167 | 130 | 97 | 97 | 55 | 39 | 29 | 16 | 30 | 40 | 4 | 17 | 26 | 13 | 30 | 35 | 149 | |
Swell 3 Height (m) Direction Period (s) | — | S 19 | ESE 12 | — | — | — | — | — | — | ESE 12 | S 12 | SE 11 | SSE 11 | SSW 9 | SE 10 | S 15 | S 15 | SE 17 | SSW 7 |
— | 434 | 174 | — | — | — | — | — | — | 14 | 3 | 30 | 22 | 8 | 17 | 4 | 18 | 45 | 15 | |
Wind waves Height (m) Direction Period (s) | S 6 | — | — | — | — | — | — | — | — | — | — | ENE 3 | NNW 2 | NW 3 | NNW 3 | WSW 3 | WNW 2 | — | NW 4 |
80 | — | — | — | — | — | — | — | — | — | — | 3 | 1 | 5 | 5 | 2 | 1 | — | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 3 | 14 | 6 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 10 | 3 | 3 | 41 | 9 | 0 |
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.










