Surf Forecasts:
Lefthanders surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 5AM (local time) - 15ft (4.5m), 16s period, WSW swell with onshore winds.
- Most powerful swell: Wednesday 26 Aug, 2PM (local time) - 15ft (4.5m), 17s period, WSW swell with 12,207 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 5AM (local time) - 15ft (4.5m), 16s period with WSW swell.
Best Forecast Surf Conditions for Lefthanders this week:
The surf forecast for Lefthanders over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 5AM. The primary swell is predicted to be 4.5m and 16s period. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Lefthanders in the next 16 days are 4.5m 17s and forecast to arrive on Wednesday (Aug 26) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 20th Aug) | 15ft (4.5m) 16s |
| Best Surf | 5AM (Thu 20th Aug) | 15ft (4.5m) 16s |
| Most Powerful | 2PM (Wed 26th Aug) | 15ft (4.5m) 17s |
Table - best surf conditions forecast for Lefthanders over the next 16 days.
The Lowdown
G’day, Rusty here with a look at what’s coming up for Lefthanders.
We’ve got a serious run of big, powerful groundswell headed our way, starting Wednesday the 19th of August. The first swell hits with waves around 16 ft from the WSW, with a very long period of 16 seconds. There’s a massive amount of energy in the water (10770), which is way beyond what most of us would call a safe paddle. The wind is cross-on from the SW at 12 mph, so it’s going to be pretty lumpy. The water temperature sits at 66°, which is a touch warmer than normal for this time of year by about 3°, so you’ll feel that difference. This swell is just too big for anything but the most experienced crew, and even then, it’s a beast.
That same pattern keeps hammering through Thursday (20th) into Friday (21st). On Friday morning, we get a moment of glassy conditions with an 12 ft SW swell, period 14 seconds, and clean – but it’s still a heavy 12 ft, so again, not for the faint-hearted. The energy is still very strong (5427). You’ll get some windows of cleaner conditions, but the size is the problem. Saturday the 22nd drops a little, with 10 ft in the morning, still very strong energy (4123), and the wind shifts to cross-shore. By Saturday afternoon, the swell eases slightly to 8 ft but the wind picks up and it gets messy – marginal at best.
Sunday the 23rd stays big again at 10 ft (3597 to 4764 energy). Monday the 24th offers a slight reprieve – morning sees a 10 ft SW swell but with lighter cross-shore winds and a bit less power (2760), though still more than most want. By Tuesday the 25th, the swell drops to 6 ft but the wind is up from the NNW at 16 mph, which makes it choppy and poor. Wednesday the 26th goes ballistic again – 15 ft from the WSW, period 17 seconds, energy through the roof (12124) – and it’s rain showers with cross-on wind. This is not a session for a standard surfer.
The standout window in all of this is actually Friday the 28th of August morning. The swell drops to a much more manageable 5 ft from the S, period 12 seconds, and we get offshore wind from the ESE at 6 mph. The energy is still moderate (1526) and conditions are clean. This is the kind of window where Lefthanders can really shine for those who know what they’re doing – it’s a reef break, very consistent, and exposed to the WSW optimum swell direction. The offshore wind will groom the wave nicely. The only catch? Crowds are often here. But for a moment of clean, semi-sized surf after all that chaos, this is the pick of the whole forecast.
After that, Saturday the 29th morning has a very long period 21-second pulse from the WSW at only 3 ft – that’s a tiny, long-period groundswell that might just offer some clean, finesse waves with light cross-offshore wind. But it’s small. Sunday the 30th and Monday the 31st see the swell jump back up to 10 ft, and the wind turns messy again. Things stay on the bigger, wind-affected side into early September.
Honestly, if you’re an experienced surfer who can handle size and a bit of chop, the entire run from the 19th to the 24th has power, but Friday the 28th morning and Saturday the 29th morning are your clearest, cleanest bets for a well-shaped, manageable wave. For the first week straight, it’s mostly too big for beginners and intermediate surfers. The real gem is that Friday the 28th with offshore wind and a nice compact swell.
Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Thu afternoon, min 12°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Tue night. Very mild (max 16°C on Tue morning, min 11°C on Sun night). Winds increasing (light winds from the E on Sun night, fresh winds from the NW by Tue night). | ||||||||||||||||||||
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 | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | WSW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 14 | SW 13 | WSW 16 | SW 14 | SW 13 | SW 13 | SW 12 | WSW 10 | WSW 14 | WSW 15 | WSW 17 | WSW 17 | SW 16 |
Wave Graph | |||||||||||||||||||||
7197 | 7196 | 6375 | 5285 | 4654 | 3056 | 4123 | 3439 | 1918 | 2574 | 3178 | 5462 | 3122 | 2008 | 1223 | 748 | 3737 | 9045 | 11503 | 11480 | 8144 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | off | glassy | cross-on | cross-off | cross | cross | cross | cross | cross | off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:08AM0.81m | 3:39AM0.84m | 5:28AM0.87m | 6:35AM0.90m | 7:24AM0.91m | 8:07AM0.91m | |||||||||||||||
Low Tide | 3:31PM0.30m | 3:41PM0.29m | 3:54PM0.28m | 4:05PM0.29m | 4:17PM0.29m | 4:29PM0.31m | 4:41PM0.32m | ||||||||||||||
6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | |
— | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | 2 | 7 | 2 |
Temp °C | 15 | 16 | 15 | 14 | 15 | 14 | 14 | 15 | 14 | 15 | 15 | 13 | 12 | 13 | 15 | 16 | 16 | 16 | 16 | 12 | 14 |
Feels °C | 11 | 13 | 12 | 13 | 13 | 11 | 11 | 11 | 9 | 10 | 9 | 9 | 10 | 10 | 12 | 11 | 11 | 12 | 12 | 6 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 14 | SW 13 | WSW 16 | SW 14 | SW 13 | SW 13 | SW 12 | WSW 10 | WSW 14 | WSW 15 | WSW 17 | WSW 17 | SW 16 |
7197 | 7196 | 6375 | 5285 | 4654 | 3056 | 4123 | 3439 | 1918 | 2574 | 3178 | 5462 | 3122 | 2008 | 1223 | 748 | 3737 | 9045 | 11503 | 11480 | 8144 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 24 | SW 20 | SW 17 | — | — | WSW 20 | WSW 18 | SW 12 | — | — | — | SW 15 | SW 13 | — | — | — | — | WSW 16 |
— | — | — | 142 | 1261 | 2719 | — | — | 76 | 603 | 1777 | — | — | — | 212 | 543 | — | — | — | — | 1137 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 18 | SW 16 | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 82 | 386 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 4 | 1 | 1 | 4 | 1 | 4 | 23 | 23 | 37 | 1688 | 1 | 1 | 41 | 42 | 50 | 50 | 199 | 37 | 5 | 1688 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Lefthanders Surf forecast
The above surf forecast table for Lefthanders provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lefthanders can be found by selecting the local surf guide option on the grey menu. Our Lefthanders 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 (Lefthanders) 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 Lefthanders 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.
Lefthanders is 87 km (54 miles) from the city of Bunbury. If you plan a holiday in Margaret River, look for hotels and other accommodation in Bunbury. Bunbury has rooms for a wide range of budgets as well as car hire and transport links.











