Surf Forecasts:
Long Beach surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 5PM (local time) - 8ft (2.5m), 13s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 5AM (local time) - 11ft (3.5m), 13s period, SW swell with 3,958 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5PM (local time) - 8ft (2.5m), 13s period with WSW 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 Monday (Aug 17) at 5PM. The primary swell is predicted to be 2.5m and 13s period with a secondary swell of 0.6m and 16s. 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 13s and forecast to arrive on Thursday (Aug 20) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Aug 21) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 17th Aug) | 8ft (2.5m) 13s |
| Best Surf | 5PM (Mon 17th Aug) | 8ft (2.5m) 13s |
| Most Powerful | 5AM (Thu 20th Aug) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Long Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down.
Monday morning, August 17th, is a total washout. There’s a 10-foot WSW swell, but it’s onshore with a N wind blowing 12 mph, cloudy skies, and the energy is huge (2714). The water’s 57°, which is a bit colder than normal for this time of year – you’ll want a thicker wetsuit.
The real deal starts Monday afternoon. The wind swings WSW and drops to 6 mph, the rain clears, and Long Beach lights up. The swell drops to a still-pumping 8 feet from the WSW, period a solid 13 seconds, and the wind is cross-off. That’s clean. The energy is still heavy (2630), and it’s marked as excellent for experienced surfers. Over 8 feet, so this is for the crew who know what they’re doing.
Tuesday morning, August 18th, keeps it going. 7 feet from the WSW, 12-second period, cross-off from the SSE. Clean lines. The energy is still strong (2062). Tuesday afternoon bumps up to 10 feet, but the wind picks up to 12 mph, making it a bit more of a handful.
Wednesday morning, August 19th, is a standout. The wind turns offshore from the S at 9 mph, the swell is a solid 8 feet from the SW, and the period is 12 seconds. The energy is high (1978). It’s going to be glassy from the offshore flow, and the surf is expected to be very good. This is the best morning of the first week.
Thursday, August 20th, the swell jumps to 12 feet in the morning, but the SSE wind is cross-off and moderate. The energy is cranked up to 3727. It’s big and punchy – expert territory only. The afternoon stays big but a bit messier with stronger wind.
Friday, August 21st, the swell eases. Morning is 7 feet, cross-off, marginal. The afternoon is the highlight: 5 feet with a moderate offshore from the S. The energy drops to 942, but it’s clean and offshore. A good end-of-week session.
Saturday, August 22nd, is a classic. Morning is glassy – wind from the S at just 3 mph, 8 feet of SW swell, 11-second period. That’s as clean as it gets. The energy is 1375. The afternoon turns offshore from the SSW, with the swell back up to 8 feet and 12 seconds. Two excellent windows in one day. This is your weekend winner.
Sunday, August 23rd, holds offshore winds all day, with the swell easing from 7 feet to 6 feet, both from the WSW. Clean, consistent, and good for a long session.
Monday, August 24th, the morning is small but clean – 5 feet, light offshore from the SSW. The afternoon picks up to 7 feet with a longer 14-second period, but the wind is cross-off. Still worth a paddle.
Tuesday, August 25th, the swell jumps back to 10 feet, but the wind is cross-off and builds to 19 mph in the afternoon. Big and bumpy. Only for the strong.
Wednesday, August 26th, morning is glassy again – NW wind at 3 mph, 8 feet of SW swell. A hidden gem mid-week.
Thursday, August 27th, starts small at 5 feet with a gentle offshore, then builds to 6 feet in the afternoon. Good but not great.
Friday, August 28th, the morning is cross-off and a bit messy, but the afternoon turns offshore from the S, with a clean 8 feet of WSW swell. A solid session.
Saturday, August 29th, is offshore all day. Morning 8 feet, afternoon 6 feet. Consistent, clean, and mellow enough.
Sunday, August 30th, is the true standout. Morning delivers a 10-foot SW swell with a gentle offshore from the S. The energy rockets to 5684. That’s a massive, powerful groundswell with a 12-second period. It’s marked as excellent for experienced surfers. This is a big, clean, powerful day. The afternoon stays big at 12 feet but the wind picks up cross-off.
Monday, August 31st, is still huge – 12 feet from the SSW in the morning, 14-second period. The energy is 4449. Afternoon is 10 feet, but the wind is up to 19 mph. Big and challenging.
Tuesday, September 1st, the swell finally drops. Morning is glassy, 6 feet from the SSW, energy down to 938. A nice, clean, small morning to finish the run.
Long Beach is a sandbar, and it’s fairly consistent. Expect crowds at times. The optimum swell direction is SW, and that’s exactly what we’re getting. The standouts are Wednesday morning, August 19th, Saturday August 22nd, and that big Sunday August 30th morning. If you can only pick one, make it Sunday the 30th – that’s a proper groundswell event.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Very mild (max 15°C on Mon morning, min 12°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | WSW 13 | WSW 13 | WSW 13 | WSW 12 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | WSW 11 | SSW 11 | SW 11 | SW 12 | SW 13 | WSW 13 | WSW 13 | WSW 12 |
Wave Graph | |||||||||||||||||||||
2709 | 2354 | 1816 | 1159 | 2815 | 2744 | 1978 | 1771 | 2757 | 3727 | 2640 | 1313 | 1172 | 527 | 346 | 1375 | 2073 | 2111 | 1548 | 1139 | 694 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | glassy | off | cross-off | off | off | off |
High Tide | 6:12PM1.43m | 6:31AM1.21m | 6:47PM1.29m | 7:10AM1.09m | 7:28PM1.15m | 8:04AM0.99m | 8:30PM1.04m | 9:46AM0.92m | 10:24PM0.98m | 11:55AM0.96m | 00:06AM1.03m | 12:59PM1.06m | 1:02AM1.13m | ||||||||
Low Tide | 11:56AM0.25m | 00:31AM0.30m | 12:29PM0.38m | 1:08AM0.42m | 1:05PM0.51m | 1:54AM0.54m | 1:55PM0.63m | 3:17AM0.62m | 3:49PM0.70m | 5:32AM0.61m | 6:07PM0.66m | 6:46AM0.52m | 7:07PM0.56m | ||||||||
7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | |
— | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:21 | — | |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 14 | 15 | 13 | 13 | 12 | 13 | 13 | 13 | 14 | 15 | 15 | 16 | 16 | 15 |
Feels °C | 12 | 13 | 15 | 12 | 10 | 8 | 10 | 12 | 14 | 9 | 9 | 7 | 9 | 9 | 9 | 14 | 14 | 13 | 13 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 13 | WSW 13 | WSW 12 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | WSW 11 | SSW 11 | SW 11 | SW 12 | SW 13 | WSW 13 | WSW 13 | WSW 12 |
2709 | 2354 | 1816 | 1159 | 2815 | 2744 | 1978 | 1771 | 2757 | 3727 | 2640 | 1313 | 1172 | 527 | 346 | 1375 | 2073 | 2111 | 1548 | 1139 | 694 | |
Swell 2 Height (m) Direction Period (s) | — | WSW 16 | SW 14 | SW 13 | — | — | — | — | — | — | — | — | SSW 11 | SSW 11 | WSW 11 | — | — | — | SSW 14 | SSW 11 | SSW 11 |
— | 211 | 304 | 903 | — | — | — | — | — | — | — | — | 495 | 415 | 328 | — | — | — | 37 | 313 | 397 | |
Swell 3 Height (m) Direction Period (s) | — | SW 16 | E 11 | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 65 | 9 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 3 | — | — | — | — | ESE 4 | — | — | — | — | SSE 4 | SE 5 | — | — | — | — | — | — | — | — | — |
5 | — | — | — | — | 13 | — | — | — | — | 34 | 70 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 21 | 0 | 0 | 0 | 15 | 14 | 0 | 0 | 0 | 15 | 411 | 3 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











