Surf Forecasts:
Guillotines surf forecast from 17 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 1AM (local time) - 2.5ft (0.8m), 6s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 5ft (1.5m), 5s period, ENE swell with 113 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 1AM (local time) - 2.5ft (0.8m), 6s period with ESE swell.
Best Forecast Surf Conditions for Guillotines this week:
The surf forecast for Guillotines over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 1AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.4m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Guillotines in the next 16 days are 1.5m 5s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Aug 21) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 18th Aug) | 2.5ft (0.8m) 6s |
| Best Surf | 1AM (Tue 18th Aug) | 2.5ft (0.8m) 6s |
| Most Powerful | 4PM (Wed 19th Aug) | 5ft (1.5m) 5s |
Table - best surf conditions forecast for Guillotines over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a deep dive into what's on the cards for the next couple of weeks. We've only got one spot in the game plan, and it's a bit of a wild card.
The water is sitting at 62°, which is pretty much right on the money for this time of year—nothing unusual there.
Straight up, the first week is a write-off. There are a few tiny, weak pulses of swell over the first few days, but nothing that's going to get the heart racing. The only day that even registers as 'surfable' is Monday the 17th, with a tiny 2ft southerly swell and 8-second period. The morning is glassy as, but the energy is weak as dishwater (91). The rest of the week is plagued by onshore or cross-shore winds and rubbish little waves. You won't miss a thing if you don't paddle out.
After a long gap of almost nothing, things finally get interesting heading into the second week. The standout session is shaping up for Wednesday morning, August 26th. We've got a clean 3ft southerly swell with a decent 10-second period, and the wind is blowing fresh offshore from the SSW. It's going to be clean as a whistle at Guillotines, with moderate wave energy (273) and a point break set-up that loves this swell direction. This is the one to circle on the calendar.
Then, Thursday morning, August 27th looks promising too. We're looking at a bigger 5ft swell pushing in from the northeast, with a short 7-second period. The combined energy jumps right up (524), which is solid, and the wind is glassy. This is bigger, more powerful stuff—definitely for the experienced crew, as it's getting up there in size.
There's also a big pulse of energy (992) showing for Saturday afternoon, August 29th, with a 8ft southerly swell (10-second period). That's a lot of water moving, but the cross-on wind will chop it up. For the experts only, if you can find a bank that works, it could be on. Just be wary of the onshore breeze.
The bottom line: be patient. The first half of the run is a dud, but there's some proper groundswell potential in the last few days of August and into the very start of September. The Wednesday the 26th is your best bet for a clean, fun session, and the 27th for a bigger, glassy morning. Keep an eye on that longer range—it could turn into something special.
Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 20°C on Thu morning, min 12°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri afternoon. Warm (max 20°C on Thu afternoon, min 10°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | S 8 | ESE 6 | ESE 6 | E 6 | E 12 | E 10 | ENE 5 | NE 6 | ENE 6 | NE 6 | E 6 | SSE 5 | E 6 | ENE 6 | NE 6 | NE 6 | S 7 | S 6 | NE 4 | S 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 46 | 44 | 40 | 43 | 67 | 54 | 113 | 82 | 33 | 16 | 19 | 14 | 36 | 14 | 8 | 5 | 27 | 16 | 18 | 31 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | cross-on | cross-on | on | on | cross-on | cross | cross | cross | glassy | cross-on | cross-off | cross-on | cross-on | glassy | glassy | cross-on | cross |
High Tide | 11:37PM1.18m | 12:11PM1.30m | 00:26AM1.04m | 12:58PM1.27m | 1:24AM0.93m | 1:52PM1.25m | 2:36AM0.86m | 2:54PM1.24m | 3:55AM0.85m | 3:56PM1.26m | 5:03AM0.87m | 4:53PM1.30m | ||||||||
Low Tide | 5:38PM0.36m | 5:43AM0.33m | 6:35PM0.42m | 6:20AM0.42m | 7:40PM0.46m | 7:03AM0.50m | 8:53PM0.48m | 7:57AM0.55m | 10:06PM0.47m | 9:02AM0.58m | 11:08PM0.42m | 10:09AM0.57m | 11:57PM0.36m | |||||||
 |  |  | |  |  | |  | | | | |  | | | | | | | | |
 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — |
 | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — |
Temp °C | 15 | 14 | 15 | 15 | 14 | 19 | 17 | 17 | 20 | 20 | 17 | 16 | 16 | 12 | 19 | 20 | 14 | 15 | 15 | 12 |
Feels °C | 13 | 13 | 13 | 12 | 12 | 14 | 12 | 14 | 16 | 18 | 15 | 14 | 15 | 10 | 16 | 16 | 11 | 12 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | ESE 6 | ESE 6 | S 10 | ENE 5 | ESE 6 | E 10 | ENE 6 | ENE 6 | NE 6 | E 6 | SSE 5 | S 4 | ENE 6 | NE 6 | NE 6 | S 7 | S 6 | S 6 | NE 5 |
| kJ | 28 | 44 | 40 | 30 | 13 | 33 | 48 | 52 | 33 | 16 | 19 | 12 | 1 | 14 | 8 | 5 | 27 | 16 | 6 | 11 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 10 | ESE 14 | E 12 | E 10 | S 8 | ESE 9 | ESE 7 | E 6 | E 10 | ENE 6 | S 10 | ESE 4 | ESE 4 | — | NE 6 | NE 6 | S 11 | S 10 |
| kJ | 46 | 22 | 35 | 36 | 67 | 54 | 5 | 26 | 18 | 12 | 2 | 14 | 2 | 4 | 2 | — | 10 | 10 | 9 | 31 |
Swell 3 Height (m) Direction Period (s) | E 10 | E 9 | ESE 10 | E 10 | ESE 7 | S 8 | SE 15 | E 11 | E 11 | ESE 8 | S 12 | S 11 | E 10 | — | S 9 | S 7 | E 9 | S 8 | S 14 | S 6 |
| kJ | 8 | 7 | 9 | 7 | 21 | 5 | 8 | 2 | 2 | 6 | 3 | 2 | 2 | — | 1 | 1 | 2 | 5 | 15 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 6 | NE 4 | — | ENE 5 | NE 6 | NW 3 | WNW 3 | S 4 | — | E 6 | W 3 | S 3 | SSE 4 | — | — | NE 4 | — |
| kJ | — | — | — | 43 | 16 | — | 113 | 82 | 1 | 1 | 13 | — | 36 | 1 | 6 | 4 | — | — | 18 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 45 | 0 | 0 | 17 | 7 | 17 | 335 | 7 | 12 | 12 | 15 | 103 | 207 | 405 | 419 | 641 | 15 | 78 | 270 | 12 |
Best forecast wave conditions in South Coast - New South Wales | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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Information about the Guillotines Surf forecast
The above surf forecast table for Guillotines provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Guillotines can be found by selecting the local surf guide option on the grey menu. Our Guillotines 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 (Guillotines) 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 Guillotines 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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