
Surf Forecasts:
Chinamans surf forecast from 12 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 12PM (local time) - 11ft (3.5m), 17s period, WSW swell with 6,132 kJ wave energy.
Best Forecast Surf Conditions for Chinamans this week:
The most powerful waves expected at Chinamans in the next 16 days are 3.5m 17s and forecast to arrive on Wednesday (Aug 12) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Wednesday (Aug 19) at 12AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12PM (Wed 12th Aug) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Chinamans over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming down the line for Chinamans.
We’ve got a solid run of swell hitting this exposed reef setup, starting right now on Wednesday the 12th of August with a big pulse. It’s a proper SW groundswell, pushing 10ft with a very long 17-second period. That’s a lot of energy – we’re talking a combined energy reading of 8602 – so it’s strong. The catch is the wind is a fresh cross-shore, blowing at 19 mph, so the surface is going to be lumpy and cross-chop. The water is sitting at 59°, which is about average for this time of year. For the advanced crew, there are waves to be had, but it won’t be pretty.
Thursday the 13th keeps the 10ft SW swell going, but the period drops to 16 seconds. Wind backs off a bit. The afternoon swing to a cross-off breeze from the west at 12 mph cleans it up nicely, making for a much better window. Friday the 14th is similar, with the swell easing slightly to 8ft by afternoon and the wind going light. It’s still a cross-shore, but it’s clean.
Saturday the 15th is where it starts to fall apart. Swell drops under 8ft, but the wind swings onshore from the ESE and picks up. By the afternoon it’s choppy and poor. Sunday the 16th and Monday the 17th are a write-off for quality with moderate cross-onshore winds and chop, even though there’s still decent SW swell in the water.
Tuesday the 18th sees the swell drop to 5ft, which is more manageable for less-experienced surfers, and the wind turns cross-off from the NNE. It’s clean, but the energy is dropping. That trend continues through Wednesday the 19th with tiny 3ft waves.
The standout moment comes on Thursday the 20th of August. We get a decent 5ft SW groundswell with a 14-second period, and the wind goes offshore from the north, blowing at 12 mph. It’s clean, and for an advanced reef break like this, that offshore wind is gold. The energy is moderate (891). This is your best call.
Friday the 21st is also worth a paddle. The swell drops to 3ft in the morning but builds to 4ft by the afternoon. The wind stays light and cross-off, making for very clean conditions. It’s not big, but it’s fun.
The energy starts to build again Saturday the 22nd, with 8ft SW to WSW swell rolling back in, but the wind comes around onshore from the east. That pattern persists into Sunday the 23rd with a solid 12ft swell, but it’s choppy and blown out. Too much size and the wrong wind.
Monday the 24th keeps the 8ft size with a long 16-second period, but it’s cross-shore and lumpy again. The best window in this second week looks like Tuesday the 25th of August: we’ve got a 8ft SW groundswell with a 17-second period – very long period. The wind is cross-off from the NE and clean. The combined energy is strong at 5029, so there’s plenty of push. This is for the expert crew only, as it’s over 8ft and a reef. The long period means it’s best on a reef like this, but it can make the takeoff critical.
Wednesday the 26th and Thursday the 27th are wild. Strong to very strong energy (3866 to 6433) and strong cross-off winds, but the swell is big and the wind is fresh to strong. Thursday afternoon the 27th has a 10ft SW swell with 14-second period and a strong cross-off breeze at 25 mph – that’s going to be howling and hollow, only for the absolute best.
If you’re not an expert, the sweet spot is Thursday the 20th into Friday the 21st: clean, moderate swell, and the reef working perfectly. The rest of it is mostly big and bumpy, or small and clean. Crowds are only “sometimes” an issue at Chinamans, but with a forecast this good for the 20th, you might find a few others out there.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed morning. Very mild (max 15°C on Thu night, min 13°C on Wed morning). Winds decreasing (fresh winds from the WSW on Wed morning, light winds from the SW by Fri morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Mon morning, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 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 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 19 | SW 17 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
5808 | 5357 | 4869 | 4136 | 3557 | 4107 | 3937 | 3502 | 3058 | 2453 | 2129 | 1542 | 1402 | 1063 | 886 | 1456 | 1384 | 800 | 1174 | 765 | 416 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off |
High Tide | 1:53PM1.08m | 2:26AM0.46m | 2:27PM1.08m | 2:49AM0.57m | 2:57PM1.03m | 3:17AM0.67m | 3:23PM0.96m | 3:45AM0.75m | 3:46PM0.86m | 4:14AM0.81m | 4:04PM0.76m | 4:43AM0.83m | 4:16PM0.66m | ||||||||
Low Tide | 9:14PM0.12m | 7:25AM0.15m | 9:24PM0.11m | 8:14AM0.11m | 9:36PM0.09m | 8:57AM0.11m | 9:50PM0.09m | 9:36AM0.13m | 10:03PM0.08m | 10:14AM0.18m | 10:15PM0.08m | 10:49AM0.25m | 10:25PM0.09m | ||||||||
7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | |
— | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 16 | 16 | 16 | 15 | 17 | 18 |
Feels °C | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 12 | 11 | 9 | 8 | 8 | 7 | 6 | 7 | 11 | 11 | 12 | 9 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 18 | — | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 14 | SW 17 | SW 16 | SW 16 |
2030 | — | 2349 | 4136 | 3557 | 4107 | 3937 | 3502 | 3058 | 2453 | 2129 | 1542 | 1402 | 1063 | 886 | 1456 | 1384 | 746 | 1174 | 765 | 416 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 26 | SW 23 | SW 21 | SW 19 | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 13 | 86 | 361 | 800 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 17 | SW 17 | SW 16 | — | — | — | — | — | — | — | ESE 3 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 3 | E 4 | E 4 | NNE 5 | NNE 5 | N 6 |
5808 | 5357 | 4869 | — | — | — | — | — | — | — | 3 | 5 | 4 | 11 | 6 | 4 | 7 | 9 | 69 | 78 | 136 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 738 | 729 | 167 | 11 | 32 | 11 | 7 | 7 | 3 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 13 | 13 | 166 | 81 | 112 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Chinamans Surf forecast
The above surf forecast table for Chinamans provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Chinamans can be found by selecting the local surf guide option on the grey menu. Our Chinamans 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 (Chinamans) 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 Chinamans 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 Yorke Peninsula? If you are looking for accommodation near Chinamans, camping, hotels and holiday cottages in Yorke Peninsula, consider staying in Kingscote which is 80 km (50 miles) away.











