Surf Forecasts:
Guillotines surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 1PM (local time) - 2.5ft (0.8m), 6s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 10PM (local time) - 4.5ft (1.4m), 6s period, NE swell with 127 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 1PM (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 Monday (Aug 17) at 1PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.8m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Guillotines in the next 16 days are 1.4m 6s and forecast to arrive on Wednesday (Aug 19) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Monday (Aug 17) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 17th Aug) | 2.5ft (0.8m) 6s |
| Best Surf | 1PM (Mon 17th Aug) | 2.5ft (0.8m) 6s |
| Most Powerful | 10PM (Wed 19th Aug) | 4.5ft (1.4m) 6s |
Table - best surf conditions forecast for Guillotines over the next 16 days.
The Lowdown
Alright, let’s be straight with you. The next week and a half is gonna be a bit of a bummer. From the 17th through the 23rd, there’s just nothing doing. The waves are tiny, the energy is weak, and the winds are all over the place. You’ll get some clean mornings, but there’s barely anything to ride. It's a real waiting game.
Water temp is about 62°F, pretty much normal for this time of year.
Things get a little more interesting around the 24th, but it’s still pretty marginal. The real call to action is Friday the 28th. The morning is looking like the standout of the entire stretch. We’ve got a solid 7ft of NE swell with a strong energy reading of 874. The wind is forecast to be glassy. That’s the kind of morning you set the alarm for. It’s well overhead, so only the experienced crew should be out. The afternoon looks like the wind will get messy, so get your fill early. The swell direction isn't the absolute best, but the size and clean conditions will make up for it.
After that, it fades back to smaller stuff. So, save your energy for the 28th. That’s the one.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 19°C on Wed morning, min 12°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat night. Warm (max 21°C on Thu morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | S 8 | S 8 | ESE 6 | ESE 6 | ESE 14 | E 12 | ESE 10 | ENE 5 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 6 | ESE 6 | NE 6 | S 6 | NE 6 | SSE 8 | SSE 6 | NE 6 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 51 | 46 | 42 | 40 | 36 | 67 | 60 | 48 | 79 | 22 | 29 | 29 | 23 | 39 | 9 | 9 | 6 | 23 | 12 | 9 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | glassy | off | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | off | cross-on | glassy | glassy | cross-on | glassy | cross-off | cross-on | cross-on |
High Tide | 11:27AM1.31m | 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 | — | — | 6:37 | — | — | 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 | — | — | 2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 3 | — | — | — |
Temp °C | 15 | 15 | 14 | 15 | 15 | 14 | 19 | 17 | 16 | 21 | 19 | 17 | 17 | 16 | 14 | 16 | 16 | 14 | 15 | 16 | 14 |
Feels °C | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 12 | 13 | 17 | 16 | 14 | 14 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | S 8 | ESE 6 | ESE 6 | ESE 6 | E 7 | ESE 6 | E 10 | ENE 6 | NE 6 | ENE 6 | ENE 6 | ENE 6 | S 10 | NE 6 | S 6 | SSE 5 | SSE 8 | SSE 6 | S 5 | NE 4 |
| kJ | 32 | 46 | 42 | 40 | 34 | 39 | 40 | 47 | 53 | 16 | 29 | 29 | 23 | 7 | 9 | 9 | 6 | 23 | 12 | 5 | 4 |
Swell 2 Height (m) Direction Period (s) | S 8 | E 10 | S 8 | S 10 | S 10 | E 12 | ESE 10 | SE 7 | ESE 9 | E 6 | ESE 7 | E 10 | SSE 4 | E 9 | SE 4 | NE 6 | NE 6 | ENE 6 | ENE 6 | S 9 | S 10 |
| kJ | 51 | 8 | 22 | 35 | 29 | 67 | 60 | 12 | 30 | 22 | 5 | 2 | 11 | 1 | 3 | 5 | 6 | 4 | 4 | 7 | 18 |
Swell 3 Height (m) Direction Period (s) | E 10 | ENE 10 | ESE 9 | ESE 10 | ESE 14 | S 9 | S 8 | S 8 | E 11 | E 11 | E 11 | S 12 | S 11 | — | S 6 | S 8 | S 8 | S 18 | S 9 | NE 9 | ENE 9 |
| kJ | 8 | 10 | 9 | 10 | 36 | 24 | 11 | 5 | 2 | 2 | 2 | 3 | 2 | — | 7 | 1 | 5 | 7 | 6 | 3 | 8 |
Wind waves Height (m) Direction Period (s) | — | ESE 6 | — | — | E 5 | — | — | ENE 5 | NE 6 | NW 2 | NW 3 | WNW 2 | S 5 | ESE 6 | — | WSW 3 | — | — | E 3 | NE 6 | — |
| kJ | — | 41 | — | — | 35 | — | — | 48 | 79 | 2 | 2 | 1 | 15 | 39 | — | 1 | — | — | 1 | 9 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 41 | 0 | 0 | 17 | 7 | 7 | 297 | 7 | 15 | 17 | 37 | 90 | 147 | 147 | 400 | 406 | 139 | 32 | 297 | 15 |
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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