Surf Forecasts:
Black Rocks surf forecast from 18 Aug 2026:
- Best quality surf: Sunday 23 Aug, 4AM (local time) - 5ft (1.5m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 1PM (local time) - 7ft (2.1m), 14s period, SSW swell with 1,874 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 7AM (local time) - 3.5ft (1.0m), 11s period with S 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 Wednesday (Aug 19) at 7AM. The primary swell is predicted to be 1.0m and 11s period. 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 2.1m 14s and forecast to arrive on Sunday (Aug 23) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 8s period and expected on Tuesday (Aug 18) at 7PM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 19th Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 4AM (Sun 23rd Aug) | 5ft (1.5m) 13s |
| Most Powerful | 1PM (Sun 23rd Aug) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Black Rocks over the next 16 days.
The Lowdown
Alright folks, Rusty here, let's get into it. We've got a mixed bag coming up over the next couple of weeks, with only one real stand-out session to point you toward.
The only real game in town is Black Rocks, a reef setup that doesn't break all that often, so when it's on, you want to be there. We're looking at a long period of very small, marginal surf through the first week, with a real pulse of energy building into the second weekend.
The water is about 77°, which is a touch warmer than normal for this time of year. That's a nice bonus.
The first real action that's worth a paddle out is on Sunday, 23rd August. The morning sees a 7ft SSW swell with a 15-second period, which is a proper groundswell, and the energy is solid (1772). The wind is a clean cross-offshore breeze from the east at 15 mph. That's the morning session to be on. By the afternoon, the conditions are dialing in for experienced surfers – still 7ft, cross-off, and clean. This is your standout.
Then Monday, 24th August morning is still looking good with a 5ft SSW swell, clean cross-off wind, and plenty of energy (1271). It's a step down in size but still a very solid option.
Tuesday, 25th August afternoon is another big tick for the experienced crew. We get a 6ft SSW swell, 15-second period, and a clean cross-off breeze again. The energy is pumping (1409). This is your second standout of the period.
Things get a bit hairy after that. Wednesday, 26th August morning we see a 10ft SSW swell with a 16-second period. That's a lot of water, but the wind is a light cross-on, which is a bit of a shame for such a clean reef. The energy is off the charts at 4939. This is strictly for experts, and the light onshore wind is a bit of a buzzkill.
Thursday, 27th August is a write-off. We're looking at a massive 13ft to 16ft S/SSW swell, but with screaming cross-onshore winds of 15 to 25 mph. The energy is extreme (up to 12435), but it's a total mess. This is more of a kite-surfing setup than a paddle surfing one.
From Friday, 28th August through to Tuesday, 1st September, the swell drops back a bit, but the wind stays strong and cross-shore, making for lumpy, choppy conditions. It's not the clean Black Rocks we want. The energy is still moderate to strong (between 1411 and 3298), but the wind is the enemy.
Finally, Wednesday, 2nd September sees a return to clean conditions. A 6ft SSW swell with a super long 18-second period and a cross-off breeze. The energy is right up there (2802). For a reef like Black Rocks, that long period groundswell is going to give you some serious, long, walled-up waves. This is a promising end to the window, but it's far out, so keep your fingers crossed.
So, the call is: Sunday 23rd August afternoon and Tuesday 25th August afternoon are your absolute best bets. Get out there and get some.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 25°C on Wed morning, min 21°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Fri morning, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | S 12 | S 12 | S 12 | S 11 | S 12 | S 11 | S 10 | SW 17 | SW 16 | SW 13 | SW 14 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 14 | SSW 13 |
Wave Graph | |||||||||||||||||||||
485 | 342 | 264 | 248 | 264 | 192 | 138 | 238 | 406 | 212 | 466 | 623 | 681 | 754 | 796 | 1772 | 1676 | 1253 | 784 | 1240 | 1018 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross |
High Tide | 3:32PM0.57m | 3:46AM0.46m | 3:49PM0.53m | 4:10AM0.39m | 4:08PM0.48m | 5:15AM0.32m | 4:47PM0.43m | 12:16PM0.42m | 10:00PM0.45m | 11:58AM0.46m | 10:44PM0.50m | 12:02PM0.50m | 11:14PM0.56m | ||||||||
Low Tide | 10:06PM0.24m | 9:25AM0.28m | 10:47PM0.28m | 8:57AM0.32m | 1:13AM0.31m | 6:28AM0.32m | 4:32AM0.26m | 4:31PM0.38m | 5:00AM0.20m | 4:59PM0.33m | 5:24AM0.15m | 5:23PM0.28m | |||||||||
6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | |
— | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 5:59 | — | — | 5:59 | — | |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 22 | 25 | 24 | 22 | 24 | 24 | 22 | 25 | 24 | 22 | 24 | 24 | 22 | 25 | 24 | 22 | 25 | 24 | 22 |
Feels °C | 22 | 22 | 21 | 25 | 25 | 23 | 24 | 25 | 23 | 25 | 25 | 22 | 24 | 25 | 22 | 24 | 23 | 22 | 25 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 11 | S 12 | S 11 | S 10 | S 10 | SW 16 | SW 13 | SW 14 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 14 | SSW 13 |
485 | 342 | 264 | 248 | 264 | 192 | 138 | 68 | 406 | 212 | 466 | 623 | 681 | 754 | 796 | 1772 | 1676 | 1253 | 784 | 1240 | 1018 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | NE 8 | NE 8 | NE 9 | NE 9 | ENE 9 | SW 17 | ENE 8 | SW 16 | NE 10 | NE 10 | ENE 9 | NE 8 | SSW 17 | ENE 8 | NE 8 | NE 7 | SSW 16 | NE 7 | NE 8 |
169 | 169 | 69 | 57 | 71 | 70 | 56 | 238 | 43 | 206 | 76 | 59 | 53 | 29 | 360 | 23 | 21 | 25 | 487 | 14 | 33 | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | ENE 8 | S 10 | S 9 | S 9 | S 16 | S 15 | N 10 | ENE 8 | — | S 13 | — | NE 7 | S 10 | — |
— | — | 73 | 66 | 64 | 66 | 61 | 47 | 65 | 41 | 25 | 20 | 17 | 2 | 24 | — | 3 | — | 18 | 8 | — | |
Wind waves Height (m) Direction Period (s) | ENE 8 | NE 8 | ESE 8 | — | — | — | — | SE 3 | — | ENE 10 | — | — | — | — | — | — | — | — | — | — | — |
74 | 67 | 67 | — | — | — | — | 2 | — | 63 | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 15 | 6 | 6 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 6 | 0 | 0 | 0 | 1 | 1 |
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.











