Surf Forecasts:
Long Beach surf forecast from 12 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 11PM (local time) - 11ft (3.5m), 15s period, WSW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 8PM (local time) - 11ft (3.5m), 15s period, WSW swell with 4,902 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8PM (local time) - 5.5ft (1.7m), 13s period with SW swell.
Best Forecast Surf Conditions for Long Beach this week:
The surf forecast for Long Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 8PM. The primary swell is predicted to be 1.7m and 13s period with a secondary swell of 2.0m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Long Beach in the next 16 days are 3.5m 15s and forecast to arrive on Tuesday (Sep 15) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Thursday (Sep 17) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 13th Sep) | 5.5ft (1.7m) 13s |
| Best Surf | 11PM (Tue 15th Sep) | 11ft (3.5m) 15s |
| Most Powerful | 8PM (Tue 15th Sep) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Long Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about this stretch ahead. There’s no surf worth paddling out for at the start, so we’re looking at a gap through the first few days until Saturday the 14th of September, when something finally shows.
The first real chance is Saturday morning, 14th September. Long Beach has a 4ft SW swell, but it’s raining with a 30 km/h onshore wind from the NNW – that’s a no-go. The wave energy is weak (639). Not what we’re after.
Things get worse Sunday and Monday with even less size and onshores. It’s not until Tuesday the 17th and Wednesday the 18th that we see bigger swell, like a 8ft WSW groundswell Wednesday morning with a 13-second period and clean conditions, but the wind is a strong 35 km/h cross-off – still just marginal. The combined energy sits at 2770, so there’s some power.
Honestly, the standout window is later. Saturday 21st September afternoon brings clean 6ft SW swell with light 15 km/h cross-off wind. The water temp is 15°, which is a bit colder than normal for this time of year, but it’s clean and the energy is solid (1611). That’s a nice paddle.
Then Sunday 22nd September morning – Long Beach goes glassy. Zero wind, 5ft SW swell, 13-second period. That’s as good as it gets for a session on a sheltered sandbar. It’s a little inconsistent, but with glass, you forgive a lot.
If you can hold out even longer, Sunday the 29th September afternoon looks excellent for experienced surfers. A solid 8ft WSW groundswell with a deep 18-second period and a clean offshore wind from the SSW at 20 km/h. That’s big, powerful, and clean – the combined energy is a massive 4310. This one’s for the crew who know what they’re doing.
So, my pick for the best bet is Sunday 22nd September morning for the glassy fun, and Sunday 29th September afternoon for the big, clean power if you’ve got the skill.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun night. Very mild (max 18°C on Sun afternoon, min 15°C on Sat morning). Winds decreasing (near gales from the ESE on Sat afternoon, light winds from the ESE by Sun night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Tue night. Very mild (max 16°C on Tue afternoon, min 12°C on Tue night). Winds increasing (moderate winds from the SE on Tue night, strong winds from the SE by Thu afternoon). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | NW 7 | SW 18 | SW 16 | WSW 14 | WSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 12 | SW 13 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2038 | 3715 | 2633 | 1665 | 1119 | 663 | 473 | 349 | 352 | 437 | 1829 | 3732 | 1905 | 990 | 868 | 897 | 713 | 880 | 716 | 1933 | 2252 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | on | on | on | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:58PM1.68m | 4:16AM1.51m | 4:29PM1.62m | 4:47AM1.44m | 4:59PM1.53m | 5:18AM1.35m | 5:29PM1.40m | 5:49AM1.24m | 5:59PM1.27m | 6:22AM1.13m | 6:35PM1.13m | 7:07AM1.01m | 7:27PM1.00m | ||||||||
Low Tide | 9:48AM0.03m | 10:15PM0.01m | 10:19AM0.08m | 10:45PM0.08m | 10:49AM0.16m | 11:15PM0.17m | 11:18AM0.26m | 11:44PM0.28m | 11:47AM0.38m | 00:14AM0.41m | 12:19PM0.50m | 00:52AM0.53m | 1:01PM0.63m | 2:01AM0.64m | |||||||
 |  |  | | |  |  |  |  | | | |  | |  | | | | | | | |
 | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — |
 | — | 6:35 | — | — | 6:36 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:38 | — |
mm | — | — | — | — | — | 7 | 3 | — | 1 | — | — | 8 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 17 | 18 | 17 | 16 | 15 | 15 | 15 | 16 | 15 | 13 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 15 |
Feels °C | 8 | 7 | 11 | 15 | 15 | 17 | 11 | 8 | 9 | 10 | 9 | 10 | 6 | 6 | 5 | 6 | 5 | 6 | 6 | 7 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 18 | SW 16 | WSW 14 | WSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 12 | SW 13 | SW 14 |
| kJ | 2038 | 3715 | 2633 | 1665 | 1119 | 663 | 473 | 349 | 245 | 437 | 1829 | 3732 | 1905 | 990 | 868 | 897 | 713 | 880 | 660 | 1933 | 2252 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SE 9 | SE 9 | SE 11 | SE 13 | SW 11 | ESE 13 | SW 15 | SW 14 | W 13 | W 13 | W 12 | W 12 | W 11 | SW 14 | — | — |
| kJ | — | — | — | — | — | 246 | 50 | 58 | 26 | 177 | 17 | 499 | 865 | 905 | 461 | 187 | 104 | 21 | 716 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SE 11 | SE 13 | — | WSW 7 | — | ESE 13 | ESE 12 | — | — | — | — | — | W 11 | — | — |
| kJ | — | — | — | — | — | — | 31 | 7 | — | 28 | — | 54 | 14 | — | — | — | — | — | 21 | — | — |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 7 | SE 8 | SE 9 | SE 9 | NNW 4 | NNW 5 | NW 6 | NW 7 | NW 6 | WNW 7 | — | SE 4 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | SE 5 |
| kJ | 676 | 774 | 909 | 625 | 760 | 19 | 116 | 301 | 352 | 361 | 522 | — | 25 | 151 | 330 | 325 | 328 | 189 | 98 | 103 | 140 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 349 | 6 | 1 | 1 | 14 | 66 | 235 | 83 | 278 | 351 | 27 | 39 | 47 | 47 | 161 | 202 | 79 | 162 | 258 | 6 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the Long Beach Surf forecast
The above surf forecast table for Long Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Long Beach can be found by selecting the local surf guide option on the grey menu. Our Long Beach 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 (Long Beach) 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 Long Beach 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.
Are you planning a holiday in Cape Town? If you are looking for accommodation near Long Beach, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 26 km (16 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Robben Island which is 37 km (23 miles) away, Bellville, Stellenbosch and Kayamnandi.
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