Surf Forecasts:
Acids surf forecast from 12 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 1AM (local time) - 10ft (3.0m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 10PM (local time) - 11ft (3.5m), 10s period, S swell with 2,700 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 4AM (local time) - 2.5ft (0.8m), 9s period with SSE swell.
Best Forecast Surf Conditions for Acids this week:
The surf forecast for Acids over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 4AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.5m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Acids in the next 16 days are 3.5m 10s and forecast to arrive on Wednesday (Sep 16) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Saturday (Sep 19) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 13th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 1AM (Wed 16th Sep) | 10ft (3.0m) 8s |
| Most Powerful | 10PM (Wed 16th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Acids over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve had a good look at what’s on the table for Acids over the next couple of weeks. Honestly, for a spot that’s fairly consistent, this is a pretty quiet run with a lot of days best left to the camera. The standout window is mid-next week, but only if you’re an experienced surfer ready for some serious size.
Starting now, the outlook is grim. Sunday the 13th through Tuesday the 15th offers nothing worth paddling out for—small, weak swell with poor quality and onshore or cross-shore winds chopping everything up. Expect a gap of a few days with no real options.
Then we get a massive but tricky spike. Wednesday morning, September 16th, sees a solid 10ft south swell roll in with a period of 9 seconds, and the combined swell energy is strong at 1328. The wind is offshore from the SSW, so it’ll be clean—glass off the top. But mate, that size is way too big for beginners, only for the experts. The same goes for Thursday the 17th, with 10ft south swell holding (energy at 1737) and offshore winds again in the morning. Afternoon Thursday drops to 8ft, still only for the skilled crew. These days are the true standout for the whole forecast period—raw power, clean faces, but not for the faint-hearted.
After that, things drop right off. Friday morning September 18th is glassy with a 4ft south swell (period 8 sec, energy 269). It’s clean and ridable for intermediates, but the swell is short-period and the energy is only moderate. Saturday the 19th morning offers a small 3ft groundswell from ESE with period 11 seconds, clean and glassy offshore (energy 301), but it’s tiny. After Saturday, we’re back into poor surf until the very end of the window—Monday the 28th shows a big 8ft south swell (energy 1511) but with onshore wind, making it messy and too big again for most.
For the standouts, lock in Wednesday 16th and Thursday 17th September mornings at Acids—big south swell, clean offshore wind, but strictly for experienced surfers only. The rest of the period is either flat, too small, or blown out.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 24°C on Mon morning, min 13°C on Sat night). Winds increasing (light winds from the NNE on Sun night, fresh winds from the S by Tue afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Tue night. Very mild (max 19°C on Fri morning, min 9°C on Tue night). Winds decreasing (fresh winds from the S on Wed morning, calm by Fri morning). | ||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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) | SSE 9 | S 10 | SSE 10 | NE 6 | NE 7 | NE 6 | ENE 7 | NE 7 | SSE 6 | S 8 | S 9 | S 10 | S 10 | S 10 | SSE 9 | S 9 | S 8 | ESE 8 | ESE 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 118 | 141 | 136 | 149 | 97 | 56 | 81 | 49 | 85 | 1071 | 1308 | 2124 | 2316 | 1727 | 1015 | 340 | 165 | 111 | 214 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | off | cross | cross-on | off | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | glassy | cross-on | cross-off |
High Tide | 9:23AM1.44m | 9:38PM1.35m | 9:59AM1.44m | 10:18PM1.22m | 10:37AM1.41m | 11:00PM1.09m | 11:17AM1.36m | 11:47PM0.98m | 12:03PM1.30m | 00:43AM0.90m | 12:59PM1.25m | 1:58AM0.85m | |||||||
Low Tide | 3:10AM0.12m | 3:33PM0.19m | 3:42AM0.20m | 4:18PM0.23m | 4:14AM0.29m | 5:05PM0.30m | 4:47AM0.37m | 5:56PM0.37m | 5:23AM0.46m | 6:56PM0.43m | 6:08AM0.53m | 8:07PM0.47m | |||||||
 |  |  | | |  | | |  |  |  | |  | | | | | | | |
 | — | 6:00 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — |
 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — |
mm | — | — | — | — | — | 1 | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 21 | 19 | 16 | 24 | 22 | 19 | 19 | 17 | 11 | 13 | 14 | 13 | 15 | 14 | 10 | 19 | 19 | 16 |
Feels °C | 13 | 17 | 15 | 15 | 20 | 18 | 18 | 17 | 14 | 5 | 5 | 6 | 5 | 10 | 10 | 7 | 15 | 16 | 13 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | S 10 | SSE 10 | ENE 6 | NE 7 | S 10 | ENE 7 | NE 7 | NE 7 | NE 6 | ENE 14 | ENE 14 | ENE 13 | E 13 | E 13 | S 9 | S 8 | ESE 8 | ESE 11 |
| kJ | 118 | 141 | 136 | 69 | 54 | 56 | 81 | 49 | 38 | 7 | 20 | 19 | 17 | 3 | 3 | 340 | 165 | 98 | 214 |
Swell 2 Height (m) Direction Period (s) | NE 4 | ENE 5 | ENE 13 | S 10 | S 11 | ENE 13 | SSE 10 | S 9 | E 13 | E 14 | — | — | S 19 | S 19 | NE 13 | ESE 7 | ESE 7 | S 8 | S 9 |
| kJ | 9 | 10 | 17 | 104 | 85 | 17 | 31 | 15 | 13 | 15 | — | — | 7 | 7 | 7 | 86 | 96 | 111 | 117 |
Swell 3 Height (m) Direction Period (s) | SSE 19 | SSE 16 | — | E 13 | E 13 | S 15 | E 12 | E 12 | — | S 16 | — | — | — | — | — | E 13 | E 10 | ESE 10 | SSE 16 |
| kJ | 74 | 26 | — | 13 | 13 | 5 | 12 | 3 | — | 5 | — | — | — | — | — | 3 | 8 | 34 | 26 |
Wind waves Height (m) Direction Period (s) | NNW 2 | NE 5 | NE 5 | NE 6 | NE 7 | NE 6 | — | SSW 5 | SSE 6 | S 8 | S 9 | S 10 | S 10 | S 10 | SSE 9 | — | — | — | N 3 |
| kJ | 1 | 25 | 43 | 149 | 97 | 56 | — | 9 | 85 | 1071 | 1308 | 2124 | 2316 | 1727 | 1015 | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 5 | 102 | 0 | 2 | 42 | 0 | 0 | 37 | 5 | 814 | 649 | 108 | 29 | 29 | 0 | 0 | 5 | 0 |
Best forecast wave conditions in Illawarra | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Acids Surf forecast
The above surf forecast table for Acids provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Acids can be found by selecting the local surf guide option on the grey menu. Our Acids 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 (Acids) 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 Acids 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 Illawarra? If you are looking for accommodation near Acids, camping, hotels and holiday cottages in Illawarra, consider staying in Wollongong which is 3 km (2 miles) away. Other places in and around Illawarra where you can find information about places to rent, and car hire include Port Kembla which is 9 km (6 miles) away, Engadine, Caringbah and Cronulla.
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