Black Rocks Jetty Surf Break

Lat Long: 21.04° S 55.23° E

Black Rocks Jetty Surf Forecast and Surf Report

Issued: 9 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Black Rocks Jetty sea temperature is
24.9° C
2.0° 

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 18 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 10PM (local time) - 7ft (2.2m), 16s period, SSW swell with glassy winds.
  • Most powerful swell: Sunday 23 Aug, 1AM (local time) - 8ft (2.4m), 16s period, SSW swell with 2,791 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 18 Aug, 7AM (local time) - 2.5ft (0.8m), 15s 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 Tuesday (Aug 18) at 7AM. The primary swell is predicted to be 0.8m and 15s period with a secondary swell of 1.0m and 12s. 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 2.4m 16s and forecast to arrive on Sunday (Aug 23) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Saturday (Aug 22) at 10AM.

Wave TypeTime (+04) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Tue 18th Aug)2.5ft (0.8m) 15s
Best Surf10PM (Sat 22nd Aug)7ft (2.2m) 16s
Most Powerful 1AM (Sun 23rd Aug)8ft (2.4m) 16s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s on the cards for Black Rocks Jetty. This is a solid, very consistent reef break that lights up on a solid SW swell, and we’ve got a ripper run of conditions coming through. The water temp is sitting pretty average for this time of year, nothing crazy to report there.

We kick off on Tuesday, the 18th of August, with clean, glassy conditions and a tidy 3ft S swell with a long 12-second period. It’s not big, but it’s clean, and the combined energy is a solid moderate push (533). Things back off a touch into Wednesday with smaller 3ft S swell, though Wednesday afternoon turns glassy again and is worth a paddle.

Thursday the 20th sees the direction swing to a long-period SW groundswell at 3ft, 16 seconds – that’s proper groundswell, so expect long, clean lines at this reef but longer waits between sets. Still glassy, so it’s a nice morning session.

Now, Friday the 21st is where it starts getting serious. The swell bumps up to 4ft from the SW, 14 seconds, with glassy conditions all day. Combined energy is well into moderate territory (603). Saturday the 22nd keeps building: 5ft SW swell, glassy in the morning, and the energy jumps to 902 – that’s a lot of punch for a head-high wave.

Sunday the 23rd is a standout for more experienced surfers. We’re looking at a 8ft SSW swell, 14 seconds, with clean, glassy conditions in the afternoon. The energy is up at 2313 (strong). This is one of the best on offer – big, clean, and with that long period pushing through, the reef will handle it beautifully. Just be aware, with this size, it’s expert territory, and crowds are possible.

Monday the 24th stays solid at 6ft SW swell, glassy morning, excellent for experienced surfers (1110 energy).

The real monster shows up on Tuesday the 25th of August. Tuesday afternoon sees a 12ft SSW groundswell with a very long 16-second period. Combined energy is a massive 6450 – that’s exceptional wave energy, and the conditions are glassy. This is an absolute standout for experts only. If you’re not on it, you’ll be watching from the rocks.

Wednesday the 26th keeps the swell at 10ft SSW in the glassy morning, but by afternoon the wind gets a bit cross-on, so aim for the early session. Thursday the 27th morning is another huge standout: 12ft SSW, 16 seconds, glassy, with 5672 energy. That’s world-class power for the brave.

Friday the 28th and Saturday the 29th see a slow drop in size, but there’s still plenty of swell around 7ft to 7ft, though winds get a bit messy. Sunday the 30th afternoon cleans up nicely with glassy 4ft S swell.

Monday the 31st of August has a tiny 2ft SW swell but with an 18-second period – that’s a very long groundswell. It’ll be small but incredibly clean, and the reef might still offer some long, gutless runners if you’re patient.

The first few days of September look promising too, with a 5ft to 6ft SW swell and glassy conditions. Solid, reliable, and not as daunting as the end of August.

All up, the absolute standout is Tuesday afternoon the 25th and Thursday morning the 27th for expert surfers chasing big, clean groundswell. For the everyday surfer, Friday the 21st through Sunday the 23rd offer the best mix of size, shape, and clean wind.

Stay safe out there.
Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Tue morning, min 22°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 24°C on Sun morning, min 21°C on Fri night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
2
2
1
2
1
2
2
3
3
3
3
3
3
3
4
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
S
12
0.8
SW
15
0.9
S
12
0.8
S
11
0.8
S
11
0.8
S
11
0.6
SW
13
0.8
SW
16
0.6
SW
15
0.9
SW
16
1.2
SW
14
1.2
SW
14
1.3
SW
14
1.6
SW
14
1.4
SW
13
2.4
SSW
16
2.4
SSW
14
2.2
SSW
14
1.9
SW
13
Wave Graph
Metric surfscale
Energy kJ
374
278
214
152
149
152
113
302
171
406
590
590
676
885
701
2791
2313
1831
1288
Wind (km/h)
5
SSE
5
NNW
5
WSW
5
SSW
5
WNW
5
SSW
5
SE
5
NNW
5
SW
5
WNW
5
W
0
NNW
5
E
5
WNW
10
NNE
10
SSE
5
NNE
5
ENE
0
S
Wind State
cross
glassy
glassy
glassy
cross-on
glassy
cross
glassy
glassy
glassy
glassy
glassy
glassy
glassy
cross-off
cross-on
cross-off
glassy
glassy
High Tide
3:36AM0.42m
3:41PM0.46m
3:58AM0.36m
3:52PM0.42m
4:22AM0.31m
4:00PM0.39m
1:32PM0.35m
12:15PM0.37m
10:29PM0.37m
12:11PM0.40m
11:00PM0.42m
Low Tide
9:35AM0.22m
10:22PM0.22m
9:28AM0.26m
11:13PM0.25m
8:12AM0.28m
3:25AM0.25m
4:43AM0.20m
5:01PM0.31m
5:08AM0.16m
5:15PM0.27m
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
rain showers
clear
part cloud
rain showers
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:39
6:37
6:37
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:06
6:06
6:06
6:07
6:07
 mm
1
1
Temp °C
23
24
24
23
24
23
22
23
22
22
23
23
22
23
23
22
24
23
22
Feels °C
25
26
26
25
26
26
24
25
25
24
25
26
25
25
25
24
25
25
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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