Surf Forecasts:
Black Rocks Jetty surf forecast from 21 Aug 2026:
- Best quality surf: Saturday 22 Aug, 4PM (local time) - 5ft (1.6m), 13s period, SW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 10AM (local time) - 13ft (4.0m), 16s period, SSW swell with 9,288 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 10AM (local time) - 4ft (1.2m), 14s 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 Friday (Aug 21) at 10AM. The primary swell is predicted to be 1.2m and 14s 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 16s and forecast to arrive on Friday (Aug 28) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Saturday (Aug 22) at 4AM.
| Wave Type | Time (+04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 21st Aug) | 4ft (1.2m) 14s |
| Best Surf | 4PM (Sat 22nd Aug) | 5ft (1.6m) 13s |
| Most Powerful | 10AM (Fri 28th Aug) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Black Rocks Jetty over the next 16 days.
The Lowdown
G’day, it’s Rusty. We’ve got a cracking run of swell ahead at Black Rocks Jetty on the SW-facing coast, so let’s get into it.
The water’s sitting at 77°, which is a touch warmer than usual for this time of year – nice for a late August session.
We kick off Friday morning (21st August) with a clean 4ft SW swell, a 14-second period, and glassy conditions from a light WNW breeze. The combined wave energy is solid at 611 (moderate), and the surf is looking very good – a perfect start.
That swell builds through Saturday (22nd), with 5ft SW groundswell and the same long period. Morning’s dead calm with glassy conditions, and the energy jumps to 901. By Saturday afternoon, the energy hits 1055 (moderate-strong) and the description says excellent for experienced surfers. This is the first standout – clean, punchy, and rippable.
Sunday (23rd) sees the swell push up to 8ft SW with a 14-second period and glassy conditions all day. The morning energy is 2155 (strong), and afternoon sits at 1895. This is excellent, powerful surf, but at this size it’s for experienced crew only – beginners should sit this one out.
Monday (24th) is the pick of the early run. We’ve got 7–8ft SSW groundswell, a 15-second period (very long), and glassy conditions with zero wind in the morning. Combined energy peaks at 2320 (strong). That kind of period and direction is perfect for this reef break – long, walling waves with plenty of power. Best of the first week, no doubt.
The swell eases into Tuesday (25th) with 5ft SSW, but the morning is still glassy and clean. Energy drops to 874 (moderate). Tuesday afternoon gets a cross-on S breeze at 6 mph, so it’s less appealing.
Wednesday (26th) morning is a bit scrappy with a cross-on wind, but the afternoon brings a surprise: 4ft SW swell with a huge 17-second period and glassy conditions. Energy is 1214 (strong). That’s a very long-period groundswell – it’ll push through nicely at the reef, with clean faces and long waits between sets.
Thursday (27th) gets big and tricky. Morning shows 8ft SSW with a 16-second period, but the wind is onshore from the SSW at 6 mph – energy is a massive 2981, but the wind kills the quality. Afternoon gets a 12 mph cross-onshore from the south, making it choppy. This is more kite-surfing territory than paddle.
Friday (28th) is massive: 13–15ft SSW groundswell, 16-second period. Morning energy is 9288, afternoon 9925 (very strong). But the wind is cross-shore from the SSE at 9–12 mph, putting a cross-chop on the face. It’s a big, raw ocean – again, kite surfers will love it, but paddle surfing is for experts only, and it won’t be pretty.
Saturday (29th) is the absolute standout of the whole outlook. 13ft SSW groundswell, 16-second period, and glassy conditions with light SW wind in the morning and light N wind in the afternoon. Energy is 7635 in the morning and 6080 in the afternoon (both very strong). This is exceptional, heavy, clean surf – for experts only. If you’ve got the skills, this is the day to clear your calendar.
Sunday (30th) drops down to 8ft SSW in the morning with an onshore breeze, but the afternoon cleans up with glassy conditions and 7ft SSW – solid, clean, and good for experienced surfers.
The swell fades through the start of September. Monday 31st August has 3–4ft SSW, glassy, but low energy (327–453). Tuesday 1st September drops to tiny 1ft – not worth paddling out. There’s a gap of a few days with nothing worthwhile.
Wednesday 2nd September picks up again with 3–4ft SW, clean and glassy – good for a longboard or funboard. Thursday 3rd sees 4ft SSW with a 12-second period, moderate energy around 439–527, and clean morning conditions. Friday 4th is messy with cross-onshore wind and small swell.
The run finishes on Saturday 5th September with a 4–5ft SW groundswell, 16-second period, and glassy afternoon conditions. Energy is 1084–1233 (moderate-strong). It’s a quality end to the outlook for experienced surfers.
The best on offer: Monday 24th August and Saturday 29th August – both have powerful, glassy groundswell at Black Rocks Jetty. Saturday 29th is the big one, but it’s serious size.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 24°C on Fri morning, min 21°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Mon morning, min 21°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
AM | PM | 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 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 12 | SW 11 | SW 17 | SW 15 | SSW 16 | SSW 17 | SSW 18 |
Wave Graph | |||||||||||||||||||||
598 | 590 | 686 | 885 | 846 | 1042 | 2155 | 1895 | 1367 | 2147 | 1889 | 1245 | 835 | 809 | 706 | 563 | 655 | 1983 | 2948 | 1817 | 6245 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | glassy | cross-on | glassy | cross-on | on | cross-on | cross |
High Tide | 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 | 1:02PM0.53m | 00:43AM0.58m | ||||||||
Low Tide | 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 | 6:43AM0.04m | 6:48PM0.15m | |||||||||
6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | |
— | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 23 | 22 | 23 | 23 | 22 | 23 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 22 | 23 | 23 | 22 | 24 | 24 | 22 |
Feels °C | 25 | 25 | 24 | 25 | 26 | 24 | 25 | 23 | 23 | 25 | 24 | 24 | 25 | 22 | 24 | 23 | 25 | 23 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 12 | SW 11 | SW 11 | SW 15 | SSW 16 | SSW 14 | SSW 18 |
598 | 590 | 686 | 885 | 846 | 1042 | 2155 | 1895 | 1367 | 2147 | 1889 | 1245 | 835 | 809 | 706 | 563 | 445 | 1983 | 2948 | 1598 | 6245 | |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 8 | NE 10 | SSW 18 | SSW 16 | — | — | SSW 18 | SW 13 | — | S 16 | S 15 | NE 8 | S 12 | S 11 | SW 17 | SSE 10 | SSE 10 | SSW 17 | S 6 |
38 | 35 | 20 | 46 | 209 | 808 | — | — | 438 | 173 | — | 80 | 39 | 9 | 136 | 84 | 655 | 20 | 33 | 1817 | 39 | |
Swell 3 Height (m) Direction Period (s) | S 9 | S 18 | NE 10 | S 14 | NE 10 | NE 9 | — | — | NE 9 | — | — | — | NE 8 | — | NE 7 | SW 17 | S 11 | ENE 13 | — | SSE 10 | — |
13 | 6 | 4 | 16 | 44 | 20 | — | — | 13 | — | — | — | 11 | — | 7 | 140 | 114 | 17 | — | 20 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 4 | S 6 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | 106 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | 0 | 1 | 2 | 5 | 2 |
Best forecast wave conditions in Réunion Island | |||||||||||||||||||||
Best forecast wave conditions in Reunion | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











