Black Rocks Jetty Surf Break

Lat Long: 21.04° S 55.23° E

Black Rocks Jetty Surf Forecast and Surf Report

Issued: 9 am 03 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 3 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 7AM (local time) - 11ft (3.5m), 18s period, SSW swell with glassy winds.
  • Most powerful swell: Wednesday 9 Sep, 7AM (local time) - 11ft (3.5m), 18s period, SSW swell with 7,101 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 10PM (local time) - 2ft (0.6m), 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 Thursday (Sep 03) at 10PM. The primary swell is predicted to be 0.6m and 12s 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 3.5m 18s and forecast to arrive on Wednesday (Sep 09) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Thursday (Sep 03) at 7PM.

Wave TypeTime (+04) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 3rd Sep)2ft (0.6m) 12s
Best Surf 7AM (Wed 9th Sep)11ft (3.5m) 18s
Most Powerful 7AM (Wed 9th Sep)11ft (3.5m) 18s

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 coming up for Black Rocks Jetty.

We’re looking at a patchy start with a few small, clean waves, but the real standout is a pulse of serious groundswell that arrives around September 9th. That’s the one to circle on the calendar. There’s a bit of a quiet spell after that, but the last few days of the run also have some promise.

The water is sitting at 76°, which is a touch warmer than normal for this time of year, so you’ll be comfortable in a spring suit.

Thursday September 3rd kicks things off with a tiny 2 ft to 2 ft SW swell, but it’s glassy. The combined energy is weak (146), so it’s really just a chance to get wet on a log. Not worth getting excited about.

Friday September 4th sees the swell building to 5 ft SW by the afternoon, with a period of 17 seconds, but the onshore wind and moderate energy (1221) keep it from being anything special. It’s a bit of a blown-out mess.

Saturday September 5th is similar. 5 ft SW swell in the morning, dropping to 5 ft, but the onshore wind ruins the surface. The energy is still moderate (1094). Not your day.

Sunday September 6th is a nice little reprieve. 4 ft SW swell, glassy conditions, and a decent 13-second period. The energy is moderate (659). The wave comment says “expect very good surf conditions,” so this is a solid session for someone who doesn’t need big waves. Clean and fun.

Monday September 7th the swell jumps to 7 ft SSW, but the wind swings cross-onshore. The energy is strong (1776), but the surface is messy. It’s big, but not clean.

Tuesday September 8th is even bigger at 8 ft SSW, with strong energy (4121 to 5201), but the wind is cross or cross-onshore and it’s a bit choppy. This is expert territory size-wise, but the wind is a letdown.

Now, here’s the standout. Wednesday September 9th. The swell is 12 ft SSW with a period of 18 seconds in the morning, dropping to 10 ft in the afternoon. The combined energy is massive (6587 in the morning). And it’s glassy. The wind is nothing. Absolutely calm. This is a serious, serious groundswell for experts only. The period is very long, so it’ll be a heavy, straight-breaking wave at the beach, but at a reef like Black Rocks Jetty, that’s the key. The alignment is SW, and the optimum direction for this break is SW, so it’s perfectly lined up. This is the best day on offer. If you are an experienced surfer, you do not miss this.

Thursday September 10th the swell drops to 5 ft SW, still glassy and clean. The energy is moderate (1521). It’s a great follow-up session for experienced surfers, but not the big show.

Friday September 11th is another clean day with 4 ft to 4 ft SSW swell, glassy, and a long period of 17 seconds. Energy is moderate (1080). A very pleasant, clean day for a longboard.

Saturday September 12th and Sunday September 13th the swell fades and the onshore wind returns. The 13th is particularly poor, with a 3 ft SSW swell and 12 mph onshore wind. The energy is moderate (942) but the conditions are useless.

Monday September 14th sees a new pulse of 6 ft SSW swell, but the wind is onshore or cross-onshore. The energy is strong (1454), but it’s messy.

Tuesday September 15th is big and blown out. 7 ft to 8 ft SSW swell, but a strong 12 mph cross-onshore wind makes it choppy. The energy is strong (2829). This is a kite-surfing setup, not a paddle session.

Wednesday September 16th is interesting. 8 ft SSW swell in the morning, glassy, with strong energy (2412). The wave comment says “excellent surf conditions for experienced surfers.” This is a good one for the crew who can handle the size. The afternoon gets a bit cross-choppy.

Thursday September 17th the morning is a bit small at 5 ft SSW with a light cross-onshore wind, but the afternoon gets interesting. 7 ft SSW swell, a 16-second period, and a clean cross-offshore wind. The energy is strong (2470). This is a solid afternoon session.

Friday September 18th closes the run with 7 ft SSW swell, glassy in the afternoon. The energy is strong (1939). The wave comment says “excellent surf conditions for experienced surfers.” A clean, big finish to the outlook.

The bottom line: September 9th is the absolute standout for expert surfers. The 6th and the 11th are the best for smaller, cleaner waves. The 16th and 18th are also good for the experienced crew.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 23°C on Thu morning, min 21°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Sun morning, min 20°C on Tue night). Wind will be generally light.

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
1
1
1
3
4
3
2
3
3
3
4
2
2
3
4
5
7
7
6
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SW
13
0.6
SW
13
0.6
SW
12
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
1.2
SW
13
1.6
SSW
15
2.1
SSW
15
2.5
SSW
14
2.4
SSW
14
2.5
SSW
15
2.5
SSW
14
3
SSW
14
3.5
SSW
18
3
SSW
17
2.1
SW
16
Wave Graph
Metric surfscale
Energy kJ
85
104
122
368
1221
1222
1094
733
577
495
488
1209
1776
2598
2151
3121
2911
3397
6587
5166
2270
Wind (km/h)
0
WNW
5
SW
5
N
5
W
10
SW
0
NW
5
SW
5
SW
0
SSW
5
W
5
WNW
5
SSE
10
S
15
SSE
15
SE
10
SE
10
S
5
ENE
5
S
5
ESE
5
SSE
Wind State
glassy
glassy
glassy
cross-on
on
glassy
on
on
glassy
glassy
glassy
glassy
cross-on
cross-on
cross
cross
cross-on
cross-off
glassy
glassy
glassy
High Tide
4:07PM0.46m
5:46AM0.34m
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
Low Tide
11:16PM0.19m
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
part cloud
rain showers
clear
part cloud
part cloud
clear
clear
part cloud
rain showers
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:24
6:24
6:22
6:22
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:09
6:09
6:10
6:10
6:10
6:10
 mm
1
1
Temp °C
23
23
22
23
23
22
23
23
22
23
23
22
23
23
22
22
21
21
21
21
20
Feels °C
25
24
23
24
24
24
24
25
25
24
25
25
22
22
21
22
22
21
22
22
22
  • Map Icons:
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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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