Surf Forecasts:
Lancelin surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 11PM (local time) - 11ft (3.5m), 16s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 11AM (local time) - 13ft (4.0m), 16s period, WSW swell with 8,903 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 11PM (local time) - 11ft (3.5m), 16s period with WSW swell.
Best Forecast Surf Conditions for Lancelin this week:
The surf forecast for Lancelin over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 11PM. The primary swell is predicted to be 3.5m and 16s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Lancelin in the next 16 days are 4.0m 16s and forecast to arrive on Tuesday (Aug 18) at 11AM. 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+) | 11PM (Wed 19th Aug) | 11ft (3.5m) 16s |
| Best Surf | 11PM (Wed 19th Aug) | 11ft (3.5m) 16s |
| Most Powerful | 11AM (Tue 18th Aug) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Lancelin over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s cut straight to it. The next couple of weeks are looking pretty tasty for the Lancelin reef, with a solid run of groundswell rolling in from the WSW. The water’s sittin’ around 66°, which is about average for this time of year, so don’t stress about any wild temperature swings.
We kick off on Tuesday the 18th with a proper pulse of swell. The morning’s got a solid 13ft of WSW groundswell, with a 16-second period, and the energy is strong at 8903. It’s a bit cross-on with a light breeze, but it’s still a powerful one. The afternoon holds that 13ft, but the wind swings more onshore and it gets a touch messier. Early is the go.
Wednesday the 19th sees the swell drop a bit to 10ft, but the wind is all over the place. Morning is onshore and cloudy, not great. The afternoon cleans up slightly but it’s still cross-onshore and a bit bumpy.
Now, Thursday the 20th is where it starts to get interesting. That morning, a light NE cross-off wind bumps in with an 11ft WSW swell at 16 seconds. The water’s going to be clean, and the energy is still chunky at 5953. This is a solid day for the experienced crew. The afternoon gets a bit sideshore, but the morning is the standout.
Friday the 21st gives us a change. A proper ESE offshore breeze in the morning, with 10ft of swell at 15 seconds. Clean lines, a bit of push, energy at 3622. Good wave for a decent surfer. The arvo’s still clean with a little less size.
Saturday the 22nd, we get another morning window. NE cross-off with an 8ft, 17-second groundswell. Nice and clean, long-period energy. But the arvo turns ugly as a SW wind kicks in and chops it all up. Get your surf in before lunch.
The start of the week, Sunday the 23rd and Monday the 24th, is a write-off. The swell drops, the wind is all wrong, and it’s messy. Tuesday the 25th is even worse, with a strong SW wind and rain – this is a day to stay on land.
But hang in there, because Wednesday the 26th brings it back. A clean E offshore, 10ft of swell, and the energy is back up. This is a great day, clean and powerful for the more experienced. Thursday the 27th is smaller and clean, but good, while Friday the 28th sees a longer-period swell at 20 seconds, with a strong E offshore. It’s a bit smaller, 4ft in the morning, but building to 6ft in the afternoon. That long period will make it wall, but Lancelin’s a reef, so it should handle it alright.
Now, for the first week of September, we’re seeing a serious pulse. The 1st of September, Tuesday morning, is exceptional. 13ft of WSW groundswell, light SSE cross-off wind, and the energy is cranking at 7954. This is big, powerful surf, so only for experts. But the true gem is Wednesday the 2nd. The wind is dead calm, the water is glassy, the swell is still 13ft, and the energy is through the roof at 11305. This is the standout of the entire run. Absolutely pumping, perfect conditions, and a wave that will have your heart racing. Get on it.
So here’s the deal: the week of the 18th to the 24th has its moments, mainly Thursday and Friday mornings. But the real gold is at the very end of the forecast – the 1st and especially the 2nd of September. That Wednesday is the one to circle on the calendar.
Short Range ForecastSome drizzle, heaviest during Wed morning. Very mild (max 17°C on Tue afternoon, min 14°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Fri afternoon, min 13°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 | WSW 16 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 16 | WSW 14 | WSW 14 | WSW 13 |
Wave Graph | |||||||||||||||||||||
8903 | 8198 | 5717 | 3515 | 4948 | 6667 | 5953 | 4797 | 4355 | 3622 | 3227 | 2803 | 4206 | 2827 | 1846 | 1408 | 1303 | 3037 | 1983 | 1556 | 781 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | cross-on | glassy | cross-off | cross | cross-off | off | cross-off | off | cross | cross | cross | cross | cross | cross | cross-on | on | cross-on |
High Tide | 1:10AM0.54m | 1:55AM0.55m | 3:11AM0.55m | 4:40AM0.56m | 5:51AM0.58m | 6:45AM0.60m | |||||||||||||||
Low Tide | 4:20PM0.18m | 3:39PM0.15m | 3:18PM0.12m | 3:26PM0.10m | 3:41PM0.08m | 3:58PM0.07m | 4:13PM0.07m | ||||||||||||||
6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | |
— | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 16 | 16 | 17 | 17 | 16 | 17 | 17 | 17 | 21 | 18 | 21 | 19 | 17 | 17 | 18 | 16 | 16 | 16 | 16 |
Feels °C | 13 | 13 | 12 | 15 | 14 | 15 | 14 | 14 | 13 | 13 | 18 | 13 | 20 | 16 | 13 | 12 | 14 | 12 | 14 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 16 | WSW 14 | WSW 14 | WSW 13 |
8903 | 8198 | 5717 | 3515 | 4948 | 6667 | 5953 | 4797 | 4355 | 3622 | 3227 | 2803 | 4206 | 2827 | 1846 | 1408 | 1303 | 3037 | 1983 | 1556 | 781 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WSW 24 | WSW 19 | — | — | WSW 21 | WSW 19 | WSW 18 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 55 | 1159 | — | — | 45 | 419 | 851 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 4 | SSW 5 | — | SW 5 | — | — | — | W 6 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 13 | 51 | — | 31 | — | — | — | 89 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 185 | 497 | 185 | 175 | 268 | 0 | 0 | 268 | 75 | 0 | 268 | 0 | 0 | 89 | 268 | 547 | 329 | 112 | 75 | 520 | 547 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Lancelin Surf forecast
The above surf forecast table for Lancelin provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lancelin can be found by selecting the local surf guide option on the grey menu. Our Lancelin 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 (Lancelin) 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 Lancelin 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.
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