Black Rocks Jetty Surf Break

Lat Long: 21.04° S 55.23° E

Black Rocks Jetty Surf Forecast and Surf Report

Issued: 9 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Black Rocks Jetty sea temperature is
24.5°C
1.6° 

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 4 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 1AM (local time) - 13ft (4.0m), 19s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 1AM (local time) - 13ft (4.0m), 19s period, SSW swell with 12,654 kJ wave energy.
  • Next surfable swell (1★+): Friday 4 Sep, 7PM (local time) - 5ft (1.5m), 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 Friday (Sep 04) at 7PM. The primary swell is predicted to be 1.5m and 16s period. 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 19s and forecast to arrive on Wednesday (Sep 09) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 9s period and expected on Friday (Sep 04) at 4PM.

Wave TypeTime (+04) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Fri 4th Sep)5ft (1.5m) 16s
Best Surf 1AM (Wed 9th Sep)13ft (4.0m) 19s
Most Powerful 1AM (Wed 9th Sep)13ft (4.0m) 19s

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


The Lowdown

G’day, Rusty here, and I’ve got a look at what’s comin’ for Black Rocks Jetty. This is a reef break that’s exposed to the SW and it’s very consistent – it don’t take much to get it goin’. The water’s sittin’ at about 76°, which is a touch warmer than normal for this time of year, so you might get away with a thinner wetsuit.

We’ve got a bit of a slow start on Friday the 4th. Friday morning you’ll see small 2ft SW swell rolling in with a solid 19-second period – that’s proper groundswell energy but it’s just not got enough push behind it. The wind’s light offshore WSW, but the score’s low. It’s a bit of a wait. Friday afternoon picks up a fraction to 5ft SW, but the wind goes cross-shore and it’s still marginal.

Saturday the 5th, the morning’s 5ft SW with a cross breeze, still a bit average. But then Saturday afternoon, the wind goes glassy with N wind, and the swell holds at 5ft SW – that’s the first real sign of life. Clean, smooth, and the period’s 14 seconds. Sunday the 6th is glassy all day, with 4ft SW in the morning and 3ft SSW in the arvo, both with long periods. Nice clean little waves for the longboard or a mid-length.

Now, Monday the 7th gets a punchy 7ft SSW in the morning, but the wind picks up from the south at 15 km/h, cross-on, and it gets choppy. By Monday afternoon, it’s 8ft SSW with 20 km/h SSE wind – that’s messy and not worth paddlin’ out. Tuesday the 8th brings a 8ft SSW swell with a 16-second period and a moderate energy reading of 3993. The wind is cross-shore gentle, so it’s still a bit lumpy. But Tuesday afternoon, the swell jumps to 10ft SSW with only 5 km/h wind – that’s a solid, powerful groundswell with clean conditions. The energy is pumpin’ at 7789. This is expert territory, no doubt.

Wednesday the 9th is the standout. The morning serves up 12ft SSW with a 17-second period and energy at 7978. The wind is light cross-shore, but it’s the afternoon that’s the absolute gem: 12ft SSW, 17-second period, glassy conditions. The energy is 6300. This is exceptional surf for expert surfers only – big, clean, powerful lines on the reef. If you’ve got the skill and the nerve, this is the session to aim for.

Thursday the 10th drops to 6ft SW in the morning with glassy conditions, still good for experienced surfers. The afternoon gets a bit weird with a 7ft SSE pulse and onshore wind, so it’s messy. Friday the 11th is small – 4ft S – but the afternoon turns glassy again, so there’s a few clean little ones. Saturday the 12th has 5ft SSW with glassy morning and a clean cross-off arvo. Sunday the 13th, the morning is 4ft SW with a cross breeze, but the afternoon is 4ft SW with glassy conditions and a 16-second period – clean and fun.

Monday the 14th is a beauty: 5ft SW with 18-second period, zero wind – glassy as a mirror. The energy is 2121. This is excellent for experienced surfers. Tuesday the 15th stays solid: 6ft SSW in the morning under glass, 6ft SW in the arvo with calm wind. Wednesday the 16th is smaller, 5ft SSW, but still glassy all day.

Now, hold onto your board. Thursday the 17th of September is another big one. Morning: 12ft SSW with a 15-second period, glassy, and energy at 6044. The afternoon is the same size, 12ft SSW, with zero wind – glassy perfection and energy at 5445. This is exceptional for experts only. Friday the 18th brings 8ft SSW with 10 km/h NE offshore wind in the morning – clean and powerful. The afternoon drops to 8ft SSW with glassy conditions. Saturday the 19th is small again, 4ft SSW, glassy morning, but the afternoon brings rain showers and a cross-on breeze that messes up the 3ft SW swell.

The true standouts here are Wednesday the 9th afternoon and Thursday the 17th – both deliver big, clean, glassy groundswell with massive energy. If you’re an expert, those are the days to circle.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sun morning, min 21°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

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

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
3
3
3
3
3
3
3
2
1
3
4
7
9
7
7
5
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)
0.7
SW
19
1.4
SW
17
1.7
SSW
15
1.6
SW
14
1.4
SW
14
1.3
SW
13
1.2
SW
13
0.9
SSW
17
1.6
SSW
16
2
SSW
15
2.3
SSW
14
2.1
SSW
13
2.4
SSW
16
3
SSW
15
4
SSW
19
3.5
SSW
17
3.5
SSW
17
3
SSW
16
1.9
SW
15
2
SSE
13
1.3
S
12
Wave Graph
Metric surfscale
Energy kJ
368
1221
1222
1094
733
577
495
437
1257
1693
2035
1452
2940
4444
12654
7795
6300
3669
1446
1336
514
Wind (km/h)
5
WSW
5
WNW
5
SSE
5
NW
5
N
0
ESE
5
NW
5
NW
10
S
15
S
20
SSE
10
SE
15
SSE
5
SSE
10
ESE
5
SSE
5
SSW
0
WSW
5
WSW
5
SW
0
N
Wind State
on
cross
cross-on
cross
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross
glassy
glassy
glassy
on
glassy
High Tide
5:11PM0.40m
10:26AM0.36m
8:28PM0.39m
11:05AM0.43m
10:08PM0.44m
11:37AM0.48m
11:00PM0.50m
12:06PM0.53m
11:41PM0.55m
12:34PM0.56m
00:17AM0.59m
1:01PM0.58m
00:50AM0.60m
Low Tide
10:26AM0.30m
1:58AM0.20m
2:58PM0.33m
3:53AM0.15m
4:28PM0.28m
4:48AM0.08m
5:11PM0.23m
5:28AM0.04m
5:45PM0.18m
6:03AM0.01m
6:17PM0.15m
6:35AM0.01m
6:48PM0.12m
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:24
6:24
6:22
6:22
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:09
6:10
6:10
6:10
6:10
6:12
 mm
Temp °C
23
23
22
23
22
22
24
23
22
24
24
22
23
22
21
22
22
21
22
22
21
Feels °C
24
24
23
24
24
24
25
24
24
24
22
21
24
23
20
22
22
22
22
22
21
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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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