Surf Forecasts:
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 cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 4AM (local time) - 10ft (3.0m), 19s period, SSW swell with 6,682 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 7AM (local time) - 1.5ft (0.5m), 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 7AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.6m and 10s. Another secondary swell of 0.6m and 13s 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 3.0m 19s and forecast to arrive on Thursday (Aug 27) 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 0.4m 8s period and expected on Friday (Aug 21) at 10AM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 20th Aug) | 1.5ft (0.5m) 16s |
| Best Surf | 4PM (Sat 22nd Aug) | 5ft (1.6m) 13s |
| Most Powerful | 4AM (Thu 27th Aug) | 10ft (3.0m) 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 coming up for us. It's a slow start, but there's some serious firepower on the horizon for the experienced crew.
The first real action kicks off on Thursday, August 20th, at Black Rocks Jetty. It's a reef break, so it's for the advanced crew only. We've got a clean 3 ft swell from the southwest, a super long 16-second period, and glassy conditions with a light west wind. The water's about average for this time of year, nothing to complain about. The energy is moderate (350), so don't expect it to be pumping, but it's a clean start.
Friday the 21st sees the swell bump up to 4 ft from the SW, still with a long period and glassy winds. The energy pushes into the moderate range (611), and the conditions are looking very good. This is a nice little warm-up.
Alright, here's where it gets interesting. Saturday, August 22nd, the swell is up to 5 ft from the SW. The morning is glassy, but the afternoon brings a cross-offshore wind, keeping it clean. The energy is getting strong (1055), and the conditions are excellent for experienced surfers. This is a solid day.
Sunday, August 23rd, is the first real standout. The swell jumps to 8 ft from the SSW with a 14-second period. The morning is glassy, and the energy is very strong (2313). This is excellent surf for the experienced lot, but at this size, it's for experts only. The SSW direction is right on the money for this spot.
Monday, August 24th, is another cracker. The swell holds at 8 ft from the SSW, with a long 15-second period and glassy winds all day. The energy is still very strong (2497). This is top-tier, heavy surf for the pros.
The swell backs off through Tuesday and Wednesday, but the conditions remain glassy and very good. It's a nice run of clean waves.
Now, we hit a rough patch. Thursday, August 27th, the wind turns onshore from the south, blows hard at 19 mph, and the swell jumps to a massive 12 ft. The energy is extreme (8669), but the quality is poor. By Friday the 28th, the swell is up to 15 ft, the wind is strong cross-shore, and the conditions are messy. With this setup and the beach-and-reef nature here, this looks more interesting for kite surfing than paddle surfing.
The weekend of the 29th and 30th sees a big improvement. Saturday, August 29th, the swell drops to 10 ft from the SSW, but the wind swings back to glassy. The energy is still very strong (3199), and the conditions are excellent for experienced surfers. This is a big, powerful, and clean swell – a real treat for the experts.
The following week, from the 30th onwards, the swell fades. Sunday afternoon the 30th has a 4 ft S swell with glassy conditions, which is a nice, clean, smaller option. We get a few more clean days with modest SW swells, including a standout on Thursday, September 3rd, with a very long 18-second period and glassy conditions, though the swell is only 3 ft. The energy is moderate (798). It's a classic long-period groundswell that will be clean but small.
So, the best of the best is the run from Sunday the 23rd through Monday the 24th, and then again on Saturday the 29th. If you're an expert, those are your days.
Rusty, signing off.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 24°C on Fri morning, min 21°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Tue morning, min 21°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | SW 16 | SW 15 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 14 | SW 14 | SW 13 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 113 | 302 | 171 | 344 | 598 | 590 | 686 | 885 | 846 | 1144 | 2313 | 2037 | 1182 | 2324 | 1889 | 1309 | 928 | 784 | 570 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | glassy | cross-off | glassy | glassy | cross-off | glassy | glassy | glassy | glassy | glassy | glassy | off |
High Tide | 4:22AM0.31m | 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 | ||||||||
Low Tide | 11:13PM0.25m | 8:12AM0.28m | 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 | ||||||||
 |  | |  |  |  |  | | | | | | | | | | | | | |
 | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — |
 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — |
mm | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 22 | 22 | 24 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 22 | 23 | 23 | 22 | 24 | 23 | 22 |
Feels °C | 25 | 25 | 25 | 25 | 26 | 24 | 24 | 25 | 24 | 24 | 25 | 23 | 24 | 24 | 25 | 24 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | S 11 | SW 16 | SW 15 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 14 | SW 14 | SW 13 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SW 12 |
| kJ | 112 | 302 | 171 | 344 | 598 | 590 | 686 | 885 | 846 | 1144 | 2313 | 2037 | 1182 | 2324 | 1889 | 1309 | 928 | 784 | 570 |
Swell 2 Height (m) Direction Period (s) | SW 13 | S 10 | S 10 | SW 11 | NE 8 | NE 10 | NE 10 | NE 10 | SSW 18 | SSW 16 | — | — | SSW 16 | SW 13 | — | S 15 | NE 8 | NE 8 | S 11 |
| kJ | 113 | 48 | 46 | 82 | 20 | 36 | 35 | 33 | 209 | 808 | — | — | 891 | 173 | — | 113 | 11 | 10 | 125 |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 10 | SW 12 | S 9 | S 9 | S 18 | S 16 | S 14 | NE 8 | NE 9 | — | — | NE 9 | — | — | — | — | — | SW 22 |
| kJ | 34 | 34 | 72 | 41 | 13 | 6 | 5 | 16 | 20 | 20 | — | — | 12 | — | — | — | — | — | 19 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Réunion Island | |||||||||||||||||||
Best forecast wave conditions in Reunion | |||||||||||||||||||
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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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