Black Rocks Jetty Surf Break

Lat Long: 21.04° S 55.23° E

Black Rocks Jetty Surf Forecast and Surf Report

Issued: 9 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Black Rocks Jetty sea temperature is
25.1°C
2.2° 

Black Rocks Jetty surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Black Rocks Jetty surf forecast from 27 Aug 2026:

  • Best quality surf: Saturday 29 Aug, 7AM (local time) - 11ft (3.5m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Friday 28 Aug, 4AM (local time) - 13ft (4.0m), 17s period, SSW swell with 8,190 kJ wave energy.
  • Next surfable swell (1★+): Saturday 29 Aug, 7AM (local time) - 11ft (3.5m), 16s period with SSW 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 Saturday (Aug 29) at 7AM. The primary swell is predicted to be 3.5m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Black Rocks Jetty in the next 16 days are 4.0m 17s and forecast to arrive on Friday (Aug 28) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 8s period and expected on Monday (Aug 31) at 1PM.

Wave TypeTime (+04) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sat 29th Aug)11ft (3.5m) 16s
Best Surf 7AM (Sat 29th Aug)11ft (3.5m) 16s
Most Powerful 4AM (Fri 28th Aug)13ft (4.0m) 17s

Table - best surf conditions forecast for Black Rocks Jetty over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let's have a look at what's on the cards for Black Rocks Jetty over the next couple of weeks.

Right off the bat, we've got some serious size rolling in, but the wind is the problem. For the first few days, we're looking at a solid groundswell from the SSW, but it's coming with ugly cross-onshore winds. Thursday the 27th kicks off with a 10ft SSW swell (17-second period) and a massive combined energy of 4932, but a light cross-onshore breeze is making it messy. It's going to be a scrap. The afternoon gets worse as the wind picks up to 12 mph, turning it into a choppy mess. Friday the 28th is a write-off with a 13ft swell but a fresh 19 mph cross-onshore wind making it lumpy and poor. Saturday the 29th still has the cross-onshore wind, so the 12ft swell is going to be bumpy.

The tide and conditions just aren't playing ball for the first few days. It's a classic case of too much wind on too much swell for a reef setup like this.

Then we get a window. Sunday morning the 30th is where it starts to get interesting. The swell drops to a still-chunky 8ft from the SSW (14-second period), but the wind goes dead calm. Glassy conditions. The combined energy is still a powerful 2106, and the forecast calls it excellent for experienced surfers. This is a proper standout. For the experienced crew, this is the pick of the first week. The water temperature is about average for the time of year, so no nasty surprises there.

Monday the 31st sees the swell drop further to 4ft, and it's glassy again, but the energy is down to 497. It's clean, but small. Tuesday the 1st of September and the days that follow are a real lull. The swell drops below 3ft, and while it's glassy, the energy is weak—below 150. This is a gap of several days with nothing really worth rushing for. The surf is "surfable but very ordinary" for a good stretch.

Now, looking into the second week, things wake up again. Saturday the 5th of September shows a promising morning with a 4ft SW swell (15-second period) and glassy conditions, energy at 636. It's a small but clean groundswell. The morning is the time to go.

But the real standout of the entire outlook is Monday the 7th and Tuesday the 8th of September. Monday afternoon sees a clean 6ft SSW swell with glassy conditions and energy of 1247. Then Tuesday the 8th is a cracker. Tuesday morning has a 5ft SSW swell with a very long 21-second period and glassy conditions (energy 2424). That's a proper groundswell—it'll have great shape and power, but it's a reef break, so that long period will wrap in nicely. The afternoon, however, is the big one: an 8ft SSW swell (19-second period), dead calm, glassy, and a combined energy of 5206. The forecast calls it exceptional for expert surfers. If you've got the skills, that's going to be a session to remember.

Wednesday the 9th still has size with an 12ft SSW swell, but the wind is onshore in the morning. The afternoon goes glassy, and it's back to being exceptional for experts. The following days, Thursday the 10th and Friday the 11th, still have clean, solid 8ft to 6ft SSW swells with light winds.

So, the bottom line: the first few days are a write-off due to wind. The standout sessions are Sunday the 30th of August for a solid, clean swell, and the absolute peak is Tuesday the 8th of September for a massive, glassy, long-period groundswell that only the experts should tackle. The 8th of September afternoon is the one to circle on the calendar.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu night. Warm (max 24°C on Thu morning, min 21°C on Thu night). Winds decreasing (fresh winds from the SSE on Fri morning, calm by Sat afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Tue morning, min 20°C on Sat night). Wind will be generally light.

Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
4
2
6
0
5
4
4
4
4
4
3
3
2
2
2
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SSW
16
3
SSW
17
3
SSW
17
3.5
SSW
17
4
SSW
16
3.5
SSW
16
4
SSW
16
3.5
SSW
15
3
SSW
15
2.5
SSW
14
2.3
SSW
14
2.1
SSW
13
1.6
SSW
13
1.3
S
12
1.2
S
12
1
S
12
0.8
S
11
0.7
S
11
0.6
S
10
Wave Graph
Metric surfscale
Energy kJ
1832
4874
4873
7795
7361
6851
6999
4900
3932
2948
2106
1512
915
497
418
266
149
112
73
Wind (km/h)
5
S
10
S
20
SSW
15
S
30
SSE
25
SSE
25
SSE
10
S
5
SE
5
ENE
0
ENE
5
S
5
ESE
5
WNW
5
SW
0
WNW
5
NW
5
SSW
0
NW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
glassy
glassy
cross-on
cross-off
glassy
glassy
glassy
glassy
on
glassy
High Tide
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
3:00PM0.54m
3:22AM0.47m
Low Tide
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
8:49AM0.13m
9:19PM0.13m
clear
clear
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:30
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:07
6:08
6:08
6:08
6:08
 mm
1
1
Temp °C
23
24
23
22
22
22
21
21
21
21
22
22
22
23
22
22
24
24
23
Feels °C
24
25
22
22
17
18
19
20
20
21
22
22
22
24
22
23
25
24
24
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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