
Surf Forecasts:
Black Rocks surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 4PM (local time) - 3.5ft (1.1m), 13s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 4AM (local time) - 15ft (4.5m), 19s period, SSW swell with 14,601 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 4PM (local time) - 3.5ft (1.1m), 13s 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 Sunday (Sep 06) at 4PM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 0.8m and 17s. Another secondary swell of 0.5m and 3s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Black Rocks in the next 16 days are 4.5m 19s and forecast to arrive on Wednesday (Sep 09) at 4AM. 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 9s period and expected on Friday (Sep 11) at 7AM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Sun 6th Sep) | 3.5ft (1.1m) 13s |
| Best Surf | 4PM (Sun 6th Sep) | 3.5ft (1.1m) 13s |
| Most Powerful | 4AM (Wed 9th Sep) | 15ft (4.5m) 19s |
Table - best surf conditions forecast for Black Rocks over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on the cards for this stretch.
Right off the bat, don’t get too excited about the next day or so. Saturday afternoon is looking pretty average with small, choppy 5ft SW swell and a cross-onshore breeze messing things up. The water’s sitting at a balmy 76°, which is a touch warmer than normal for this time of year, so that’s a nice bonus if you’re just floating around.
Sunday afternoon is where we finally see a glimmer of hope. The wind drops right out, turning glassy, and that 4ft SW groundswell (13 sec period) will be super clean. The combined energy is moderate at 726, so it won’t be a beast, but for a small wave session, it’s the pick of the early days. Black Rocks is a reef setup that loves a SW direction, so this is your window for a fun, uncrowded paddle.
Monday brings a jump in size – 7ft to 8ft SSW swell with a very long 15-second period. That’s proper groundswell energy, with combined energy climbing into the thousands (1712 to 2368). The problem? The wind goes onshore and it gets messy and rainy by the afternoon. This spot needs clean conditions, and it’s not getting them. By Tuesday and Wednesday, the swell pumps up even bigger – up to 13ft on Wednesday with massive energy (over 10,000) – but the wind stays nasty from the SE, making it a lumpy, choppy mess. That 13ft is expert-only territory anyway, and with the wind, it’s a no-go for paddling. Honestly, that setup looks way more interesting for the kite crew.
We get a bit of a reprieve on Saturday the12th. The wind swings cross-offshore, cleaning up a5ft SSW swell. It’s only moderate energy (888), but the conditions will be clean. The real standout, though, is Sunday the13th. Mark that one. Morning session has a solid5ft SSW groundswell with an18-second period – that’s a very long period, so the waves will have real punch and shape. The wind is light and cross-offshore, leaving the surface clean. Combined energy jumps to a strong 2136. Black Rocks is a reef, so that long period will wrap in nicely. This is the best on offer for experienced surfers, just be aware it can get crowded here.
The following week sees the swell hanging around in the 5ft to8ft range, but the wind is mostly a problem. Tuesday the15th has a chunky8ft SSW swell with16-second period, but it’s crossed up and lumpy. By Wednesday the16th, the wind is howling at 25 mph, making it a write-off. We finally get a clean window again on Sunday the20th, with a solid6ft SSW swell and a16-second period, and the wind turns offshore. Combined energy is a healthy 1672. That’s a quality, clean session for those who can handle it, but it’s the last proper call in the window. After that, the swell drops right off into tiny, weak stuff for the final days.
So, if you’ve got one session to chase, make it Sunday the13th morning. The backup is Sunday the20th morning. The rest is either too windy, too big and messy, or too small to get excited about.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon morning. Warm (max 24°C on Sat afternoon, min 21°C on Sat night). Winds increasing (calm on Sun afternoon, fresh winds from the SE by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 20°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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) | SW 14 | SW 13 | SW 13 | SW 13 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 16 | SSW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 15 | SSE 13 | SSE 12 | S 12 | S 11 | S 16 |
Wave Graph | ||||||||||||||||||||
822 | 651 | 451 | 388 | 859 | 1712 | 2354 | 2870 | 1831 | 3326 | 6880 | 10022 | 8243 | 4681 | 1907 | 1634 | 1013 | 488 | 377 | 589 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 7:48PM0.47m | 10:55AM0.48m | 9:51PM0.53m | 11:24AM0.55m | 10:47PM0.60m | 11:52AM0.62m | 11:29PM0.67m | 12:19PM0.66m | 00:05AM0.71m | 12:45PM0.70m | 00:38AM0.73m | 1:08PM0.71m | 1:08AM0.72m | |||||||
Low Tide | 3:41AM0.19m | 4:07PM0.34m | 4:39AM0.11m | 4:55PM0.27m | 5:19AM0.06m | 5:32PM0.21m | 5:54AM0.02m | 6:05PM0.16m | 6:25AM0.01m | 6:36PM0.12m | 6:54AM0.02m | 7:06PM0.10m | ||||||||
— | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 22 | 24 | 24 | 22 | 23 | 23 | 22 | 23 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 23 | 23 | 21 |
Feels °C | 23 | 21 | 25 | 26 | 24 | 23 | 21 | 19 | 18 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 19 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 13 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 16 | SSW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 15 | S 14 | SSE 13 | S 12 | S 11 | S 16 |
822 | 651 | 451 | 388 | 859 | 1712 | 2354 | 2870 | 1831 | 3326 | 6880 | 10022 | 8243 | 4681 | 1907 | 1162 | 750 | 488 | 377 | 589 | |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 9 | E 10 | SSW 17 | SW 12 | ENE 10 | ENE 10 | SW 26 | SW 24 | SW 22 | SW 20 | — | — | ENE 10 | SSE 13 | SSW 14 | SW 14 | SW 14 | SW 13 | S 11 |
71 | 69 | 48 | 333 | 216 | 35 | 20 | 171 | 1234 | 2212 | 3676 | — | — | 31 | 917 | 1126 | 731 | 368 | 245 | 257 | |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 11 | SSW 18 | E 11 | ENE 10 | — | — | ENE 10 | — | — | — | — | — | — | S 15 | ENE 10 | ENE 10 | ENE 10 | S 17 | SW 13 |
4 | 4 | 120 | 59 | 43 | — | — | 20 | — | — | — | — | — | — | 228 | 55 | 57 | 65 | 283 | 136 | |
Wind waves Height (m) Direction Period (s) | ESE 9 | ESE 10 | ESE 10 | SE 3 | — | ESE 10 | S 4 | S 4 | SSE 5 | S 7 | — | — | — | — | ENE 10 | SSE 13 | SSE 12 | ESE 8 | ESE 8 | ESE 3 |
78 | 74 | 85 | 5 | — | 57 | 14 | 26 | 66 | 298 | — | — | — | — | 55 | 1634 | 1013 | 64 | 59 | 3 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 199 | 227 | 227 | 227 | 227 | 227 | 227 | 227 | 199 | 227 | 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.










