Surf Forecasts:
Black Rocks surf forecast from 8 Aug 2026:
- Best quality surf: Friday 14 Aug, 1PM (local time) - 5ft (1.5m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 10PM (local time) - 10ft (3.0m), 18s period, SSW swell with 5,314 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 7AM (local time) - 4ft (1.2m), 11s period with SW swell.
Best Forecast Surf Conditions for Black Rocks this week:
The surf forecast for Black Rocks over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 14) at 7AM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.9m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Black Rocks in the next 16 days are 3.0m 18s and forecast to arrive on Saturday (Aug 15) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 10s period and expected on Tuesday (Aug 11) at 7AM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 14th Aug) | 4ft (1.2m) 11s |
| Best Surf | 1PM (Fri 14th Aug) | 5ft (1.5m) 13s |
| Most Powerful | 10PM (Sat 15th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Black Rocks over the next 16 days.
The Lowdown
Alright, let’s switch gears to feet and Fahrenheit.
We’re looking at Black Rocks, and the water is running about 77°, which is a touch warmer than usual for this time of year—nice. The surf kicks off with a moderate, long-period SSW groundswell running about 4ft with an 18-second period. That’s a deep, powerful groundswell perfect for this reef, but the wind is howling ESE at 16 mph, cross-shore, making a lumpy mess. The combined swell energy is strong (925), but the surface is ugly. Real frustrating.
Monday the 10th and Tuesday the 11th, the wind backs off a bit and goes cross-offshore, cleaning things up. We’re still sitting on a consistent 4-4ft SSW swell with a period around 14-15 seconds. The energy is moderate to strong (530-806), but it’s still only marginal. A few waves, but nothing special.
Wednesday the 12th and Thursday the 13th drop off to about 3ft, with the wind turning a bit more onshore. Energy drops (291-338). Tiny, weak waves with ripples. Not worth it.
Now, Friday the 14th: the morning shows the swell building to 5ft from the SSW, 14-second period, with clean cross-offshore wind at 9 mph. The energy hits 628, and the conditions are clean. That’s the first real window. The afternoon pushes 5ft with even more energy (1025). Best bet in the early run.
But the big standout is Saturday the 15th and Sunday the 16th. Saturday afternoon hits 8ft from the SSW with a 19-second period, and the combined energy is massive at 4935. Sunday morning peaks at 10ft. Let me be clear: 8ft and up on a reef is serious. Only for experts. The wind is cross at 16-19 mph, so bumpy, but the power is insane. It’s a beast of a groundswell, just crying for offshore wind.
That big energy carries into Monday the 17th with 7ft from the south, 15-second period, and clean morning winds. That’s another solid window for strong surfers. After that, the swell slowly fades through the week, dropping to 5ft by Tuesday and then 4ft by Wednesday the 19th.
Then, around Thursday the 20th and Friday the 21st, we get a tiny, clean pulse. Thursday morning is 2ft from the SW with an 18-second period—long period, but tiny. The wind goes glassy by Thursday afternoon and stays glassy through Friday. Smooth as butter, but you’re looking at knee-high waves. Fun for a longboard, but no power.
Also, this spot is inconsistent and can get crowded often, so on those clean days, expect company. And with that reef, those long-period swells will focus the energy hard—keep your head up.
The best windows: Friday the 14th for clean, solid surf, and Saturday the 15th for massive size, but that’s for the brave only.
Stay salty,
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Sun morning. Warm (max 25°C on Tue morning, min 21°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 25°C on Fri morning, min 21°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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) | SSW 18 | SSW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 14 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SSW 11 | SSW 13 | SSW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 817 | 683 | 543 | 472 | 529 | 465 | 597 | 636 | 551 | 476 | 546 | 466 | 447 | 340 | 286 | 269 | 361 | 328 | 772 | 703 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross | cross-off | cross-off | cross-off |
High Tide | 9:35PM0.54m | 11:24AM0.52m | 10:44PM0.60m | 12:05PM0.58m | 11:34PM0.66m | 12:41PM0.63m | 00:16AM0.71m | 1:13PM0.67m | 00:54AM0.74m | 1:44PM0.68m | 1:29AM0.74m | 2:11PM0.68m | 2:01AM0.71m | |||||||
Low Tide | 4:39AM0.12m | 4:48PM0.28m | 5:29AM0.05m | 5:37PM0.23m | 6:10AM-0.01m | 6:17PM0.19m | 6:48AM-0.03m | 6:54PM0.16m | 7:22AM-0.03m | 7:29PM0.14m | 7:53AM0.00m | 8:02PM0.14m | ||||||||
 |  |  | | | | | | | | | | | | | |  | | | | |
 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — |
mm | — | — | 1 | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 24 | 22 | 24 | 24 | 22 | 24 | 23 | 22 | 25 | 24 | 22 | 24 | 24 | 22 | 24 | 24 | 22 | 25 | 25 | 22 |
Feels °C | 21 | 20 | 21 | 22 | 21 | 22 | 20 | 20 | 24 | 22 | 22 | 24 | 24 | 22 | 25 | 25 | 22 | 25 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 14 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SSW 11 | SSW 13 | SSW 12 |
| kJ | 817 | 683 | 543 | 472 | 529 | 465 | 597 | 636 | 551 | 476 | 546 | 466 | 447 | 340 | 286 | 269 | 361 | 300 | 772 | 703 |
Swell 2 Height (m) Direction Period (s) | NE 10 | ENE 10 | ENE 8 | ENE 8 | SSE 7 | SSE 9 | SSE 9 | ENE 10 | E 10 | NE 11 | E 10 | E 12 | E 12 | ENE 12 | ENE 11 | E 11 | SW 15 | SSW 14 | ENE 10 | SW 21 |
| kJ | 104 | 68 | 47 | 46 | 42 | 65 | 70 | 182 | 188 | 119 | 138 | 132 | 175 | 106 | 97 | 112 | 229 | 328 | 56 | 368 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SSW 11 | SSE 10 | SW 18 | ENE 10 | N 10 | SSE 9 | SSE 8 | SW 19 | SSE 8 | N 12 | NE 12 | NNE 12 | NNE 13 | SSE 4 | SW 16 | ENE 10 | ENE 10 | SW 23 | ENE 10 |
| kJ | 68 | 47 | 19 | 82 | 64 | 2 | 8 | 42 | 15 | 32 | 3 | 6 | 15 | 16 | 5 | 69 | 60 | 58 | 253 | 38 |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 6 | SE 7 | SSE 7 | SE 8 | ENE 10 | ENE 8 | — | SE 10 | SE 10 | — | ESE 10 | SE 10 | SSE 4 | — | ESE 11 | SE 4 | — | ESE 10 | — |
| kJ | 40 | 34 | 52 | 42 | 135 | 88 | 103 | — | 240 | 184 | — | 163 | 157 | 5 | — | 143 | 4 | — | 67 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 199 | 6 | 199 | 199 | 6 | 15 | 227 | 6 | 6 | 6 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 6 | 0 |
Best forecast wave conditions in Mauritius | ||||||||||||||||||||
Best forecast wave conditions in Mauritius | ||||||||||||||||||||
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Information about the Black Rocks Surf forecast
The above surf forecast table for Black Rocks provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Black Rocks can be found by selecting the local surf guide option on the grey menu. Our Black Rocks 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 (Black Rocks) 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 Black Rocks 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.
Black Rocks is 12 km (7 miles) from the city of Vacoas. If you plan a holiday in Mauritius, look for hotels and other accommodation in Vacoas. Vacoas has rooms for a wide range of budgets as well as car hire and transport links.
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