Surf Forecasts:
Black Rocks surf forecast from 27 Aug 2026:
- Most powerful swell: Friday 28 Aug, 10PM (local time) - 15ft (4.5m), 16s period, SSW swell with 9,687 kJ wave energy.
Best Forecast Surf Conditions for Black Rocks this week:
The most powerful waves expected at Black Rocks in the next 16 days are 4.5m 16s and forecast to arrive on Friday (Aug 28) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 9s period and expected on Monday (Aug 31) at 7PM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Fri 28th Aug) | 15ft (4.5m) 16s |
Table - best surf conditions forecast for Black Rocks over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for the coming days at Black Rocks. It's a reef break, pretty exposed to the south-west swells, but it's inconsistent, so you can't always count on it. The water is sitting at about 77°, which feels a touch warmer than usual for this time of year.
Right now and for the next several days, it's a bit of a write-off, I'm not gonna lie. We've got a solid 10ft to 13ft SW swell pumping in from Thursday afternoon (27th August) all the way through the weekend, but the wind is just ruining it. It's cross-onshore or cross-shore, and the sea state is choppy and lumpy. The combined energy is massive (5189 to 6871), but it's just messy. This is one for the kites, not the paddlers.
We then hit a bit of a lull. From Monday the 31st, the swell drops away. Monday morning sees a smaller 6ft S swell (energy 941) with cleaner cross-offshore winds, but it's still only marginal. That pattern of small, clean waves with cross-off winds continues through to Wednesday morning (2nd September), but the swell gets really tiny, dropping to 2ft and even 1ft. It's clean but just not enough push to get excited about. There's a proper flat spell there.
Now, things get a bit more interesting on Saturday the 5th of September. We get a pulse of long-period groundswell from the SW – 3ft but with a period of 19 seconds. That's very long period. The combined energy is 556, so moderate. The wind is a gentle cross-shore, so there will be a bit of chop, but that kind of period can really make a reef like this work. It might be worth a look Saturday morning, but it's a long-range call so don't book your flights.
After that, the swell bumps up a bit. Monday the 7th of September has a 3ft S swell with an 18-second period and moderate cross-shore winds (energy 994). Still not perfect, but getting there. The best chance looks like the following week, around Tuesday the 8th and Wednesday the 9th of September. We're looking at a consistent 6ft SSW swell (period 13-16 seconds) and moderate cross-shore winds. The energy is strong (1287 to 1528), and it's scoring a 2 out of 10, which is the best we get in this run. It's not glassy, but it's the most promising window for a surf.
Given Black Rocks is inconsistent and the wind is rarely offshore during this period, we're not looking at a classic run. The best window is that Tuesday and Wednesday (8th & 9th Sept) with solid SW swell and manageable cross-shore breeze. Don't expect perfection, but it's the pick of a tricky forecast.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri morning. Warm (max 24°C on Thu afternoon, min 19°C on Fri night). Winds increasing (light winds from the SSE on Thu afternoon, strong winds from the SSE by Fri afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 25°C on Tue morning, min 21°C on Sun night). Mainly fresh winds. | |||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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 17 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 13 | S 13 | S 12 | S 12 | S 11 | S 11 | S 11 | S 10 | S 10 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5117 | 7618 | 8851 | 7436 | 8483 | 6871 | 5541 | 4029 | 3067 | 2310 | 1397 | 941 | 649 | 472 | 237 | 189 | 112 | 73 | 50 | 33 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 00:34AM0.70m | 1:10PM0.68m | 1:02AM0.72m | 1:32PM0.70m | 1:31AM0.72m | 1:56PM0.71m | 2:01AM0.69m | 2:22PM0.70m | 2:34AM0.64m | 2:49PM0.67m | 3:09AM0.58m | 3:19PM0.63m | 3:52AM0.50m | |||||||
Low Tide | 6:38PM0.16m | 6:58AM0.03m | 7:04PM0.13m | 7:22AM0.03m | 7:32PM0.11m | 7:46AM0.05m | 8:02PM0.10m | 8:12AM0.08m | 8:33PM0.11m | 8:38AM0.12m | 9:09PM0.13m | 9:05AM0.18m | 9:51PM0.17m | |||||||
 |  |  |  | | | | | | | | | | | | |  | | | | |
 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 |
Temp °C | 24 | 22 | 23 | 21 | 20 | 22 | 21 | 20 | 23 | 22 | 22 | 23 | 23 | 22 | 25 | 24 | 22 | 25 | 24 | 22 |
Feels °C | 22 | 21 | 20 | 15 | 14 | 15 | 15 | 14 | 17 | 16 | 18 | 18 | 19 | 19 | 22 | 21 | 21 | 22 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 13 | S 13 | S 12 | S 12 | NE 11 | NE 11 | NE 11 | ENE 10 | NE 11 | NE 10 |
| kJ | 5117 | 7618 | 8851 | 7436 | 8483 | 6871 | 5541 | 4029 | 3067 | 2310 | 1397 | 941 | 649 | 472 | 258 | 249 | 163 | 189 | 163 | 160 |
Swell 2 Height (m) Direction Period (s) | SE 11 | E 10 | — | — | — | — | — | — | — | — | — | — | NE 11 | NE 11 | S 11 | S 11 | S 11 | S 10 | S 10 | SSE 10 |
| kJ | 72 | 48 | — | — | — | — | — | — | — | — | — | — | 220 | 187 | 237 | 189 | 112 | 73 | 50 | 31 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 16 | SW 16 | SW 18 | SW 14 | SW 14 | WSW 16 | SW 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 9 | 12 | 31 | 7 | 24 | 33 |
Wind waves Height (m) Direction Period (s) | — | — | — | S 8 | — | — | — | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 11 | SE 9 | ESE 3 | — | — | ESE 2 | — | ESE 3 | E 3 |
| kJ | — | — | — | 653 | — | — | — | 32 | 37 | 83 | 208 | 234 | 287 | 3 | — | — | 1 | — | 3 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1 | 1 | 30 | 227 | 227 | 227 | 227 | 227 | 227 | 227 | 227 | 227 | 227 | 199 | 18 | 6 | 6 | 228 | 227 | 6 |
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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