Black Rocks Jetty Surf Break

Lat Long: 21.04° S 55.23° E

Black Rocks Jetty Surf Forecast and Surf Report

Issued: 9 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Black Rocks Jetty sea temperature is
24.9° C
1.9° 

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 20 Aug 2026:

  • Best quality surf: Saturday 22 Aug, 4PM (local time) - 5ft (1.6m), 13s period, SW swell with glassy winds.
  • Most powerful swell: Thursday 27 Aug, 4PM (local time) - 11ft (3.5m), 19s period, SSW swell with 7,847 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 10PM (local time) - 3.5ft (1.1m), 16s 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 (Aug 20) at 10PM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 0.5m and 10s. Another secondary swell of 0.5m and 4s is also forecast. 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 19s and forecast to arrive on Thursday (Aug 27) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 8s period and expected on Friday (Aug 21) at 10AM.

Wave TypeTime (+04) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 20th Aug)3.5ft (1.1m) 16s
Best Surf 4PM (Sat 22nd Aug)5ft (1.6m) 13s
Most Powerful 4PM (Thu 27th Aug)11ft (3.5m) 19s

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


The Lowdown

Alright, this is Rusty. Let's have a look at what's on the cards for Black Rocks Jetty.

We've got a solid run of surf coming up, but it's a story of two halves. The first few days are clean and fun, but the real muscle shows up late next week. The water here is sitting at 77° – a touch warmer than normal for this time of year, which is a nice bonus.

Things kick off on Thursday morning, August 20th. It's small, around 3ft from the SW, but the energy is surprisingly punchy for the size (371). The wind is a light cross-on, so it's not perfect, but it's surfable. The real action starts Thursday afternoon, though. The wind drops to glass, and that 2ft SW swell with a long 15-second period cleans right up. It's tiny but glassy, and you'll catch a few if you're patient.

Friday, August 21st, is where it gets going. We've got a clean 4ft SW swell, with a 14-second period. The wind is glassy or cross-off all day. This is proper, fun, longboard-to-fish kind of surf. The energy jumps to 611, which is moderate, and the quality is there.

Saturday, August 22nd, is a standout. The morning is glassy with 5ft of SW swell and an energy reading of 901. By Saturday afternoon, it's still glassy, and the swell holds at 5ft with a 13-second period. The energy climbs to 1053, which is getting into moderate territory. This is a great day for intermediate surfers.

Sunday, August 23rd, the swell pushes up. The morning is a beauty: 8ft from the SSW, glassy, with a massive energy of 2313. This is excellent for experienced surfers, but it's getting too big for beginners. The afternoon gets a bit messy with a cross-shore wind, so the morning is the call.

Monday, August 24th, is probably the best of the first week. The morning is calm and glassy, with a 8ft SSW swell, a 15-second period, and energy at 2536. The afternoon is also glassy and solid. This is expert territory, but if you're comfortable, it'll be a session to remember.

Surf tails off a bit on Tuesday, August 25th, but the morning is still a clean 6ft with glassy conditions. The afternoon turns onshore and messy. Wednesday, August 26th, offers a glassy 5ft in the morning, but the afternoon goes to crap with a strong cross-onshore wind.

Now, here's the big one. Thursday, August 27th, through to Saturday, August 29th, is the real standout window. On Thursday morning, we're looking at 8ft from the SSW with a 16-second period and energy of 3417, but the wind is a cross-shore, so it's a bit lumpy. Thursday afternoon, August 27th, is where the heavyweights come out. We've got an 12ft SSW swell, a very long 19-second period, and the energy is a massive 7929. The wind is a moderate cross-shore, so it's going to be a beast. This is only for experts. The period is so long, it'll be barreling, but it might be a bit straight at the beach. Keep that in mind.

Friday, August 28th, might be the pick of the whole run. The morning sees 13ft of SSW swell with a 17-second period and energy of 8217. The wind is a light cross-on, so it's still manageable for the pros. But Friday afternoon is the gold: 12ft, 16-second period, glassy, and energy of 6818. Exceptional conditions for expert surfers. The crowd factor is "sometimes" here, but with that size, it'll be quiet.

Saturday, August 29th, is still pumping with 8ft and glassy conditions in the morning, and another 7ft glassy session in the afternoon. A great way to end the big swell.

After that, the surf drops steadily through the end of August and into September. The first few days of September are small and mostly onshore, not worth a paddle. There's a small window on Thursday, September 3rd, with a glassy 3ft, and again on Friday, September 4th, with a glassy 4ft SW swell, but it's a shadow of the week before.

So, to sum it up: the best on offer is Friday, August 28th afternoon, with that glassy, 12ft SSW groundswell. It's a dream for the experts. The runner-up is Monday, August 24th morning, with the 8ft, glassy, long-period swell. Don't miss those.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Fri afternoon. Warm (max 24°C on Fri morning, min 21°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

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

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
2
2
3
3
3
3
4
4
4
3
4
4
4
4
3
1
3
3
1
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SW
16
0.6
SW
15
0.8
SW
16
1.2
SW
14
1.2
SW
14
1.3
SW
14
1.6
SW
14
1.6
SW
13
1.7
SW
13
2.4
SSW
14
2.3
SW
14
2.2
SW
14
2.3
SSW
15
2.4
SSW
14
2
SSW
13
1.7
SSW
13
1.6
SSW
12
1.4
SW
12
1.5
SW
12
1.5
SW
11
2.3
SSW
17
Wave Graph
Metric surfscale
Energy kJ
302
171
344
598
590
686
885
846
1042
2313
2037
1697
2324
2038
1384
900
784
580
583
553
3046
Wind (km/h)
5
W
0
NE
5
E
5
NNW
5
NE
5
SE
5
NW
5
N
0
SE
5
W
5
NW
5
ESE
0
NW
5
N
5
ENE
5
NNW
10
SW
5
ESE
5
SW
15
S
10
SSE
Wind State
cross-on
glassy
glassy
cross-off
glassy
glassy
glassy
glassy
glassy
glassy
cross
glassy
glassy
glassy
off
glassy
on
glassy
glassy
cross-on
cross
High Tide
4:00PM0.39m
1:32PM0.35m
12:15PM0.37m
10:29PM0.37m
12:11PM0.40m
11:00PM0.42m
12:17PM0.43m
11:26PM0.46m
12:28PM0.46m
11:51PM0.51m
12:44PM0.50m
00:16AM0.55m
Low Tide
3:25AM0.25m
4:43AM0.20m
5:01PM0.31m
5:08AM0.16m
5:15PM0.27m
5:32AM0.12m
5:36PM0.23m
5:55AM0.08m
5:59PM0.20m
6:19AM0.05m
6:23PM0.17m
part cloud
part cloud
part cloud
clear
rain showers
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
6:37
6:35
6:35
6:33
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:06
6:07
6:07
6:07
6:07
6:07
 mm
1
Temp °C
23
22
22
24
22
22
23
22
22
23
22
22
24
23
22
23
23
22
24
23
22
Feels °C
25
25
24
26
24
24
25
24
25
24
23
24
25
25
24
24
23
24
23
22
23
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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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