Surfnerd Logo

Surf forecast for Black Rock

Tide
โฑ๏ธs.
โšก๏ธkJ
Timezone:
Pacific/Rarotonga
Forecast updated:
25/06, 17:30
Wind: SN UNITY Atmos
(20260626 03z)
Waves: SN UNITY WAVE
(20260625 18z)
Join Surfnerd to check this forecast
Create a free account to check forecasts, set your home spot, save spots and log surf sessions.
Sign up with AppleSign up with Google

Timeline

Black Rock Surf Forecast Guide

Black Rock is a surf spot located near the Golf Course next to the airport. It's not exactly a pass, but more of a curve in the reef that makes it tricky yet interesting for surfers. The spot is known for its decent waves and specific conditions that can call for a bit more skill than usual. It's not overly crowded, so youโ€™ll get some space to navigate the waves, but it does have its quirks that youโ€™ll need to manage.

The waves at Black Rock mostly break to the right, but there are solid lefts that can barrel pretty well from a wedging take-off. The swell here works best when it's coming from the north, but the spot can also handle waves from the south and northeast. Youโ€™re looking at a sweet range of swell sizes, as it can handle around 4 ft (about 1.2 m) of swell. The waves break over live coral, so watch out for those. The best times to surf are during mid to high tides, and south-east winds usually make for better conditions. Keep in mind that this spot is better suited for expert surfers due to its risks, including potential closeouts and the occasional pitching lip.

One of the good things about Black Rock is its consistency, thanks to its wide swell window and constant offshores. However, short rides and the need to scramble over the reef on a dropping tide can be drawbacks. Plus, you should keep an eye out for local bodyboarders who are often hanging around. They respect the spot, and it's a good idea to do the same!

Surf spots near Black Rock

Club Raro
Kiikii Tapere, Cook Islands
Reef break
Fri 26
Sat 27
Sun 28
Mon 29
Tue 30
Avarua Harbour
Takuvaine Tapere, Cook Islands
Reef break
Fri 26
Sat 27
Sun 28
Mon 29
Tue 30
Black Rock
Cook Islands, Cook Islands
Reef break
Fri 26
Sat 27
Sun 28
Mon 29
Tue 30
Avaavaroa Passage
Cook Islands, Cook Islands
Reef break
Fri 26
Sat 27
Sun 28
Mon 29
Tue 30
Rutaki Passage
Cook Islands, Cook Islands
Reef break
Fri 26
Sat 27
Sun 28
Mon 29
Tue 30

Frequently asked questions

What are good surfing conditions for Black Rock?

Black Rock is usually best with swell from northeast through east-southeast to south (NE-ESE-S), ideally north (N) around 1.2 m / 4 ft to 3 m / 10 ft, southeast (SE) offshore wind, and mid to high tide.

Where is the surf spot Black Rock?

Black Rock is a surf spot in Avarua, Cook Islands.

What is the surf break like at Black Rock?

Black Rock is a left-and-right reef break over live coral. Expect a moderate crowd.

What surfing skill level is Black Rock suitable for?

Black Rock can suit expert surfers.

Is Black Rock beginner friendly for surfing?

Black Rock is better suited to expert surfers.

How consistent is the surf at Black Rock?

Black Rock has moderate surf consistency for Cook Islands.

Is there parking for surfing at Black Rock?

Parking around Black Rock: free parking and roadside parking.

What surf spots are near Black Rock?

Other nearby surf spots are Avarua Harbour, Rutaki Passage, Club Raro, and Avaavaroa Passage.

What swell direction works for surfing at Black Rock?

Black Rock can work with swell from northeast through east-southeast to south (NE-ESE-S); north (N) is usually best.

What swell size works for surfing at Black Rock?

Black Rock usually works with swell around 1.2 m / 4 ft to 3 m / 10 ft.

What wind direction is best for surfing at Black Rock?

Southeast (SE) offshore wind is usually best at Black Rock.

What wind direction is offshore for surfing at Black Rock?

Southeast (SE) is offshore at Black Rock.

What tide works best for surfing at Black Rock?

Black Rock works best around mid to high tide. A rising tide is usually better here.

Confidence

Confidence tells you how much the weather models agree on the forecast.

  • High confidence: Models agree closely; forecast is reliable.
  • Medium confidence: Some disagreement; conditions may shift slightly.
  • Low confidence: Models diverge; treat forecast with caution.

We calculate the wind confidence by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. For wave certainty we compare height, period and direction, also on multiple models. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

Open in the app

Scan the QR code to open the Surfnerd app

Share
Join Surfnerd for free
  • Save favorite spots
  • Set home spot
  • Log surf sessions
Sign up with AppleSign up with Google
Surfnerd Logo
More good sessions. Less time wasted.
What you get
Free
SN+
Forecast range
5 days
15 days
Swell partitions
2
All
Wave energy
Not included
Forecast model access
Basic
All
Surf-window timeline
2 days
15 days
Compare forecasts
Not included
Confidence scores
Not included
Related sessions
Not included
Custom spots
5
Compare all features
Choose a Surfnerd+ plan
Cancel anytime. Automatically renewed until cancelled. By purchasing the product, you accept the Terms of Use & acknowledge the Privacy policy.
Surfnerd Logo

Login to your Surfnerd account

Log your sessions, save your favorite spots, and keep your surf forecast personalized.

Log in with AppleLog in with Google

Readme

Welcome! If youโ€™re new to surf forecasting, check out this quick guide.

Forecast Table

The forecast table (the section on the page with all the numbers) is designed to pack as much information in the screen as possible. Although intimidating at first, it will help you make informed decisions about the waves faster, trust me :D. The table consists of roughly four sections, time and predictions, wind, waves, and tides:

๐Ÿ”ฎ Time and predictions section

Here we show the forecast thour and the overall surf quality prediction. This is determined based on the wave, wind and tide quality prediction. These individual predictions can be found on the forecast map.

๐Ÿ’จ Wind section

The first row on the table (with the ๐Ÿ’จ icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

๐ŸŒŠ Wave section

The waves section consists of three rows, one for wave height and direction, one for period and one for wave energy. Our algorithm chooses the "dominant wave" using spot-adjusted surf energy (depth + directional fit). This is usually the first swell partition, but during local storms it can switch to wind waves. If that happens, values are shown in gray and italic.

๐ŸŒ’ Tide section

The tide section consists of a row with the actual heights per hour (measured at the half hour) and a table that displays the flow of the tide and the extremes (lows and highs).

Forecast map

The forecast map consists of arrows. These arrows represent all wave partitions (swell partitions and wind wave partition) and the wind. This allows you to see things like: a secondary swell or wind waves messes up the surf, or the wind is just a tick offshore so very surfable. Click a metric label in the bottom left to bring that arrow to the front โ€” handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. Itโ€™s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

Log your surf sessions to compare forecasts with real sessions and sharpen future predictions.

Models and Updates

Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

Surf Predictions

Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Hereโ€™s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm โ€” the more you log, the smarter your forecasts get.

With Surfnerd, no more "you should have been here yesterday"