Surf Forecasts:
Black Rocks Jetty surf forecast from 25 Aug 2026:
- Best quality surf: Saturday 29 Aug, 1AM (local time) - 13ft (4.0m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 13ft (4.0m), 16s period, SSW swell with 8,712 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 4AM (local time) - 5ft (1.5m), 12s period with SW swell.
Best Forecast Surf Conditions for Black Rocks Jetty this week:
The surf forecast for Black Rocks Jetty over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 4AM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 0.8m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Black Rocks Jetty in the next 16 days are 4.0m 16s and forecast to arrive on Friday (Aug 28) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 11s period and expected on Tuesday (Sep 01) at 4PM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 26th Aug) | 5ft (1.5m) 12s |
| Best Surf | 1AM (Sat 29th Aug) | 13ft (4.0m) 16s |
| Most Powerful | 1PM (Fri 28th Aug) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Black Rocks Jetty over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down for the crew that thinks in feet.
We’ve got one spot on the menu for the next couple of weeks, and it’s a wild ride.
The main event is Black Rocks Jetty. This reef is wide open to the southwest, and it’s about to get hammered. The water is warm, sitting at 77°, which is a solid 4° warmer than what’s normal for this time of year.
We start on Tuesday, August 25th. The afternoon is average with a cross-on breeze and a 5ft SSW swell. The energy is moderate (797), but it’s not the day.
Wednesday the 26th is where it gets real. The morning has a clean 5ft SW swell and a cross-off breeze. It’s good, but the real standout is Wednesday afternoon. The wind goes light and cross-off, dropping the swell to 3ft, but the period jumps to a very long 18 seconds. The energy is strong (1185), and it’s clean. That’s a proper groundswell for a reef. This is the pick of the first week.
Now, Thursday the 27th gets big. The morning sees a 10ft SSW groundswell with a 17-second period and a perfect offshore wind. The energy is massive (4641), and at over 9ft, this is for experts only. The afternoon turns nasty with a strong cross-on and 12 mph winds from the SSW, making it a total mess. The swell gets even bigger into Friday the 28th, hitting 13ft, but with a fresh cross-onshore wind and lumpy conditions, it’s a write-off. The energy is huge (9324), but the wind is a killer. This is more for the kite crew.
The weekend offers a break. Saturday the 29th delivers glassy conditions with a still-juicy 12ft SSW swell in the morning, dropping to 10ft in the afternoon. Glassy conditions and strong energy (4900) mean it’s heavy but clean. For experts only. Sunday the 30th is glassy all day with a 7ft to 7ft SSW swell, offering a little more accessibility for strong intermediates.
After that, the swell fades. Monday the 31st is clean and small, and by Tuesday, September 1st, we’re down to knee-high dribble. The energy drops below 200, and it’s a flat spell with a few glassy but tiny waves through to Friday, September 4th.
But hold on. The second week has a huge promise. Friday, September 4th afternoon looks excellent. The swell is 5ft from the SW with a very long 18-second period, glassy conditions, and a strong energy of 1447. The wind is light and offshore. This is a serious standout for the second week.
Then it gets even better. Saturday, September 5th is clean all day with a 6ft to 6ft SW groundswell and a solid 15-second period. The energy is strong (1526), and the wind is cross-off. This is the best of the second week, but being more than a week out, mark it as promising but not locked in.
The run continues with a solid 5ft SSW swell on Sunday the 6th, but the wind goes onshore and then turns into a strong 25 mph cross-on with rain showers by the afternoon. That’s a mess.
The real fireworks are predicted for Monday the 7th through Tuesday the 8th of September. Monday afternoon sees a 10ft SSW swell from a 17-second period, with a gentle cross-shore breeze and a massive energy of 10970. Tuesday, September 8th morning is a monster: a 15ft SSW swell, 18-second period, and a light cross-shore breeze. The energy is a staggering 12611. Then Tuesday afternoon turns exceptional: the wind goes offshore, the swell is still 13ft, and the energy is 9976. That is a world-class, expert-only, heavy reef slab. If you’re a charger, that’s the one.
The outlook fades out Wednesday, September 9th, with a still-strong 8ft SSW swell, but the wind goes cross-on, making it marginal.
So, the standout sessions are Wednesday, August 26th afternoon for the clean, long-period groundswell, and Tuesday, September 8th afternoon for the sheer power and offshore perfection. Keep your eyes on that second week.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 24°C on Wed morning, min 21°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the SSE by Thu night). | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sun afternoon, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 12 | SW 12 | SSW 18 | SW 16 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 12 | S 12 | S 11 |
Wave Graph | |||||||||||||||||||
590 | 594 | 553 | 2408 | 4874 | 5051 | 7795 | 7361 | 8605 | 7163 | 4900 | 3699 | 2671 | 1910 | 1377 | 915 | 497 | 418 | 205 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-on | on | cross-on | cross-on | cross | cross-on | cross-off | cross-on | glassy | off | glassy | cross-on | cross | glassy | on | glassy |
High Tide | 11:51PM0.51m | 12:44PM0.50m | 00:16AM0.55m | 1:02PM0.53m | 00:43AM0.58m | 1:22PM0.56m | 1:11AM0.59m | 1:44PM0.57m | 1:40AM0.59m | 2:08PM0.58m | 2:11AM0.56m | 2:33PM0.57m | 2:44AM0.53m | ||||||
Low Tide | 6:19AM0.05m | 6:23PM0.17m | 6:43AM0.04m | 6:48PM0.15m | 7:07AM0.03m | 7:14PM0.13m | 7:31AM0.04m | 7:42PM0.12m | 7:56AM0.06m | 8:11PM0.11m | 8:22AM0.09m | 8:43PM0.12m | |||||||
— | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | |
— | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 24 | 23 | 22 | 24 | 23 | 22 | 23 | 22 | 21 | 21 | 22 | 21 | 22 | 23 | 22 | 23 | 23 | 23 |
Feels °C | 24 | 24 | 23 | 23 | 23 | 21 | 22 | 19 | 18 | 19 | 21 | 23 | 21 | 22 | 23 | 23 | 24 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 16 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 12 | S 12 | S 11 |
590 | 594 | 437 | 2408 | 4874 | 5051 | 7795 | 7361 | 8605 | 7163 | 4900 | 3699 | 2671 | 1910 | 1377 | 915 | 497 | 418 | 205 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | SSW 18 | S 11 | S 11 | SE 10 | SSE 10 | — | — | — | — | — | — | NE 7 | NE 7 | NE 10 | NE 8 | NE 7 | NE 8 |
175 | 157 | 553 | 84 | 58 | 51 | 19 | — | — | — | — | — | — | 13 | 53 | 49 | 35 | 31 | 50 | |
Swell 3 Height (m) Direction Period (s) | SW 22 | SW 19 | S 11 | SSW 19 | — | — | — | — | — | — | — | — | — | NE 10 | — | — | ENE 10 | NE 11 | NE 11 |
18 | 184 | 152 | 214 | — | — | — | — | — | — | — | — | — | 4 | — | — | 11 | 29 | 29 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 8 | — | — | — | — | — | — | SE 8 | — | — | — | — |
— | — | — | — | — | — | — | 329 | — | — | — | — | — | — | 244 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 1 | 3 | 27 | 3 | 3 | 3 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 3 | 0 |
Best forecast wave conditions in Réunion Island | |||||||||||||||||||
Best forecast wave conditions in Reunion | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Black Rocks Jetty Surf forecast
The above surf forecast table for Black Rocks Jetty 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 Jetty can be found by selecting the local surf guide option on the grey menu. Our Black Rocks Jetty 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 Jetty) 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 Jetty 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 Jetty is 6 km (4 miles) from Saint-Paul. If you plan a holiday in Réunion Island, look for hotels and other accommodation in Saint-Paul. Saint-Paul has rooms for a wide range of budgets as well as car hire and transport links.











