Surf Forecasts:
Guillotines surf forecast from 18 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 5ft (1.5m), 5s period, ENE swell with 133 kJ wave energy.
Best Forecast Surf Conditions for Guillotines this week:
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 Wednesday (Aug 26) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| 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, Rusty here. Let’s break down what’s on the cards for Guillotines.
This is a tricky outlook for the next two weeks. For a spot that’s already inconsistent, we’re staring down a long, dry spell. The first real suggestion of anything surfable doesn’t pop up until Sunday the 23rd of August, and even then it’s a weak, 2ft SSE swell with a period of 8 seconds, giving a total combined energy of just 95 (weak). The wind is glassy that morning, which is a major positive for clean conditions, but the swell is just too small to get excited about. That’s the only day with a score above zero in the first week and a half.
After that, we’re back to a frustrating run of poor surf conditions right through until Friday the 29th of August. There’s a morning on the 29th with a 3ft S swell, period of 11 seconds, and offshore SSW wind. The combined energy is 256 (moderate), and the wind is clean. That’s the first time the outlook starts to look like a proper surf session, but it’s still only rated as “surfable but ordinary.”
The real standout, and the only day I’d circle on the calendar, is Sunday the 30th of August. The morning is the pick of the entire forecast. We’ve got a solid 10ft SSE swell with a very long period of 17 seconds, and the combined energy is a massive 4335 (very strong). That’s a groundswell with serious power. The wind is light offshore from the SW, so it’ll be clean. That’s expert territory – well over 8ft – so only for the experienced crew. Because it’s a long-period groundswell and Guillotines is a point break, the setup is right for these waves to wrap in and hold their shape. The afternoon drops off a bit with a cross-on wind and smaller 8ft swell.
The Monday the 31st of August still has size (5ft to 5ft from the SSE) but the wind turns onshore and choppy, ruining the quality. The energy drops to 595-610 (moderate). After that, we’re back to small, weak, and messy conditions through the end of the 16-day window.
Water temperature sits at 63°F, with an anomaly of 1°F, which is about average for this time of year. Nothing unusual there.
Bottom line: If you’re an expert and can wait, the morning of Sunday the 30th of August is the only serious window. Everything else is small, weak, or blown out. This is a classic case of an inconsistent point going quiet for long stretches, so don’t hold your breath in between.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Thu morning, min 12°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 20°C on Mon afternoon, min 11°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | E 12 | E 10 | ENE 5 | ENE 6 | NE 6 | NE 6 | ENE 6 | ENE 6 | NE 7 | NE 6 | NE 6 | ENE 6 | S 9 | S 8 | S 8 | S 9 | S 9 | S 9 | S 7 |
Wave Graph | |||||||||||||||||||
67 | 54 | 133 | 40 | 28 | 75 | 20 | 27 | 22 | 10 | 6 | 3 | 24 | 32 | 31 | 27 | 25 | 25 | 23 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross | cross | cross-off | cross-on | cross-off | glassy | cross | glassy | on | on | cross-on | cross | glassy | cross-off |
High Tide | 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 | 5:53AM0.92m | 5:42PM1.36m | |||||||
Low Tide | 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 | 11:06AM0.52m | 00:37AM0.30m | |||||||
— | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — | |
— | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 14 | 19 | 17 | 16 | 20 | 19 | 16 | 18 | 19 | 14 | 16 | 16 | 14 | 19 | 18 | 14 | 19 | 20 | 16 |
Feels °C | 12 | 14 | 13 | 13 | 17 | 16 | 14 | 16 | 16 | 11 | 13 | 14 | 13 | 15 | 13 | 11 | 16 | 18 | 13 |
Swell 1 Height (m) Direction Period (s) | ENE 5 | ESE 6 | E 10 | ENE 6 | NE 6 | NE 6 | ENE 6 | ENE 6 | NE 7 | NE 6 | NE 6 | ENE 6 | S 9 | S 8 | S 8 | ENE 5 | S 9 | S 9 | S 7 |
13 | 40 | 48 | 40 | 28 | 15 | 20 | 27 | 22 | 10 | 5 | 3 | 24 | 32 | 31 | 13 | 25 | 25 | 23 | |
Swell 2 Height (m) Direction Period (s) | E 12 | E 10 | E 15 | ESE 9 | ESE 8 | E 6 | E 10 | S 5 | S 5 | S 5 | S 8 | S 6 | NE 6 | E 4 | S 16 | S 9 | ENE 5 | ENE 6 | ENE 6 |
67 | 54 | 4 | 31 | 21 | 19 | 2 | 1 | 9 | 2 | 6 | 3 | 1 | 3 | 5 | 27 | 8 | 10 | 6 | |
Swell 3 Height (m) Direction Period (s) | ESE 7 | SE 15 | S 15 | E 11 | E 11 | ESE 8 | S 12 | S 11 | S 10 | S 9 | E 9 | S 8 | E 9 | S 16 | — | ENE 9 | ENE 8 | ENE 8 | ENE 9 |
21 | 9 | 4 | 2 | 2 | 6 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 19 | — | 8 | 7 | 7 | 7 | |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 5 | ENE 5 | NNW 2 | NNW 3 | NE 6 | WNW 3 | — | — | WSW 3 | SSW 3 | SE 3 | E 4 | ENE 4 | ENE 4 | — | WNW 3 | SSE 2 | — |
16 | 38 | 133 | 1 | 2 | 75 | 3 | — | — | 1 | 2 | 4 | 4 | 3 | 15 | — | 2 | 1 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 7 | 17 | 297 | 10 | 12 | 7 | 78 | 32 | 90 | 476 | 565 | 188 | 15 | 17 | 107 | 12 | 15 | 32 | 15 |
Best forecast wave conditions in South Coast - New South Wales | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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