
Surf Forecasts:
Blacks Reef surf forecast from 15 Jul 2026:
- Best quality surf: Saturday 18 Jul, 6PM (local time) - 5.5ft (1.7m), 23s period, S swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 3AM (local time) - 7ft (2.2m), 19s period, S swell with 3,601 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 6AM (local time) - 5ft (1.6m), 16s 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 Friday (Jul 17) at 6AM. The primary swell is predicted to be 1.6m and 16s period with a secondary swell of 0.6m and 5s. 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 2.2m 19s and forecast to arrive on Sunday (Jul 19) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 10s period and expected on Thursday (Jul 16) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 17th Jul) | 5ft (1.6m) 16s |
| Best Surf | 6PM (Sat 18th Jul) | 5.5ft (1.7m) 23s |
| Most Powerful | 3AM (Sun 19th Jul) | 7ft (2.2m) 19s |
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 coming our way over the next couple of weeks.
We’ve got a run of good, clean conditions kicking off the forecast period, but it’s a bit of a mixed bag after that. The water’s running a touch cooler than usual for this time of year, about 55°, so a decent wetsuit is the call.
Things get going on Thursday, July 16th, with a small but clean 2ft swell from the ESE at 15 seconds. The wind is a light cross-offshore from the NW, so it’ll be a nice morning for a longboard or a beginner session. The combined energy is moderate (225). The afternoon turns a bit choppy as the wind swings cross-on, so Friday morning is the one to aim for.
Now, Friday, July 17th is where it gets interesting. We’ve got glassy conditions, a 5ft SE groundswell at 16 seconds, and a solid energy reading (1419). This is excellent for experienced surfers – the reef will be handling that well. The wind is dead calm at dawn with a NW breeze. Saturday, July 18th keeps the quality high with a clean 5ft SE swell in the morning and a glassy 4ft S swell in the afternoon. The afternoon has a very long period (24 seconds) and strong energy (2339), but that long period might make it a bit too straight for the beach if you’re not on the reef. It’s a standout for a point or reef break.
The first weekend wraps up with some decent size but onshore winds. Sunday, July 19th has a 6ft S swell but it’s a bit messy with the cross-on wind. The best window is the Monday, July 20th morning: 5ft S swell, clean, and cross-off wind.
There’s a gap of poor conditions from Tuesday, July 21st through to the end of the month. Tuesday, July 21st is a write-off with rain and onshore wind, and the swell gets too big for anyone but experts (8ft on the afternoon). The next clear opportunity is Wednesday, July 22nd – a glassy 6ft S swell in the morning, which is another good one for experienced surfers. The energy is strong (1230). That’s the pick of the second week.
The end of July and start of August looks small and ordinary. There’s a brief window on the morning of Tuesday, July 28th where a glassy 3ft S swell at 11 seconds offers a clean but small session. The last good call is Friday, July 31st: a clean 4ft SE swell with offshore wind from the N. It’s not a classic, but it’s a nice way to finish the month.
For the standout, I’m calling Friday, July 17th morning at Blacks Reef. The glassy conditions, the 5ft groundswell from the SE, and the strong energy make it the best of the whole run. For a longer session, the Saturday, July 18th afternoon is a close second if you can handle the long period.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Thu afternoon, min 8°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Tue morning. Very mild (max 13°C on Mon morning, min 8°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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) | ESE 15 | ESE 17 | SE 16 | SE 16 | SE 16 | SE 15 | SE 14 | S 24 | S 20 | S 18 | S 17 | S 16 | S 15 | S 14 | S 18 | S 18 | S 17 | S 16 | S 14 | S 13 | S 12 |
Wave Graph | |||||||||||||||||||||
196 | 516 | 976 | 1333 | 1366 | 1171 | 899 | 1332 | 3467 | 2319 | 1837 | 1241 | 1147 | 1179 | 2019 | 2199 | 3264 | 1571 | 1147 | 784 | 504 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | glassy | cross | off | cross-off | glassy | cross-on | cross-on | cross-on | off | cross-off | cross-on | cross-on | on | on | glassy | glassy | glassy | cross-off |
High Tide | 7:11PM1.96m | 7:42AM1.78m | 8:06PM1.93m | 8:36AM1.77m | 8:58PM1.88m | 9:27AM1.75m | 9:50PM1.81m | 10:17AM1.72m | 10:42PM1.74m | 11:07AM1.68m | 11:33PM1.68m | 11:59AM1.65m | 00:24AM1.62m | ||||||||
Low Tide | 12:53PM0.04m | 1:34AM0.06m | 1:47PM0.03m | 2:28AM0.06m | 2:42PM0.06m | 3:21AM0.09m | 3:36PM0.13m | 4:12AM0.14m | 4:30PM0.21m | 5:02AM0.20m | 5:23PM0.29m | 5:51AM0.28m | 6:15PM0.36m | ||||||||
7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | 5:05 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 5 | 2 | — | — | — | — |
Temp °C | 16 | 17 | 13 | 12 | 12 | 10 | 12 | 13 | 10 | 11 | 11 | 11 | 13 | 13 | 11 | 11 | 11 | 9 | 11 | 12 | 10 |
Feels °C | 12 | 14 | 10 | 11 | 10 | 8 | 10 | 11 | 8 | 8 | 8 | 10 | 11 | 10 | 9 | 6 | 7 | 7 | 9 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | ESE 15 | ESE 17 | SE 16 | SE 16 | SE 16 | SE 15 | SE 14 | SE 14 | S 20 | S 18 | S 17 | S 16 | S 15 | S 14 | S 18 | S 18 | S 17 | S 16 | S 14 | S 13 | S 12 |
196 | 516 | 976 | 1333 | 1366 | 1171 | 899 | 776 | 3467 | 2319 | 1837 | 1241 | 1147 | 1179 | 2019 | 2199 | 3264 | 1571 | 1147 | 784 | 504 | |
Swell 2 Height (m) Direction Period (s) | S 17 | NE 10 | S 16 | S 7 | S 10 | S 10 | S 12 | S 24 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SSE 7 | SE 7 | SE 6 | ESE 6 |
24 | 4 | 20 | 39 | 230 | 290 | 389 | 1332 | 577 | 437 | 363 | 244 | 169 | 164 | 104 | 97 | 60 | 177 | 54 | 34 | 23 | |
Swell 3 Height (m) Direction Period (s) | S 14 | NE 10 | — | SSW 16 | S 18 | S 15 | S 19 | S 11 | S 10 | — | — | S 20 | — | — | ESE 11 | — | — | SE 11 | SE 11 | SE 11 | SE 12 |
4 | 4 | — | 47 | 173 | 272 | 30 | 231 | 120 | — | — | 67 | — | — | 148 | — | — | 55 | 29 | 29 | 36 | |
Wind waves Height (m) Direction Period (s) | WNW 3 | SW 17 | SSW 4 | — | — | — | — | — | — | — | — | — | — | — | — | SSW 4 | S 7 | — | — | — | — |
1 | 47 | 22 | — | — | — | — | — | — | — | — | — | — | — | — | 15 | 306 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 3 | 3 | 0 | 2 | 0 | 0 | 0 | 3 | 3 | 3 | 0 | 0 | 6 | 3 | 73 | 14 | 0 | 0 | 0 | 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.










