Surf Forecasts:
Guillotines surf forecast from 18 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 10PM (local time) - 4.5ft (1.4m), 6s period, NE swell with 124 kJ wave energy.
Best Forecast Surf Conditions for Guillotines this week:
The most powerful waves expected at Guillotines in the next 16 days are 1.4m 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 0.5m 4s period and expected on Saturday (Aug 22) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| 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, grab a coffee and listen up. This is gonna be a tough one for the Guillotines (point) faithful, but I’ll give it to you straight.
The next week and a half is pretty much a write-off, I’m talking a flat spell from now until the end of August. There’s a glimmer on the very first morning, Tuesday the 18th. We get a glassy 3ft of swell from the ESE with a short, weak 6-second period, and the water's sitting at a pretty normal 62°F for this time of year. The combined energy is a low 86, so it’s weak. It’s surfable, but that’s about it – pretty ordinary, and definitely nothing to get excited about. After that morning, the wind goes to shit and the size drops even more.
Honestly, from Tuesday afternoon right through to Monday the 31st, it’s a long stretch of tiny, weak, and often choppy conditions. You’ll see the odd glassy morning here and there, but with waves barely scraping 2ft, you’re better off finding something else to do. There is zero consistency in the swell for this spot.
The only real standout, and I mean the *only* one, is the window around Monday the 31st of August into Tuesday the 1st of September. We finally see some proper size, but you have to be an expert for this. On Monday afternoon (31st) the swell jumps to 8ft from the south with a 10-second period, and the energy is a massive 2179. It’s big and powerful, but the wind is a cross-shore, so it’s going to be choppy and tricky. Tuesday morning (1st of September) is the real gem: 8ft of S swell with offshore wind (SSW at 6 mph) and clean. The energy is still a strong 993. For advanced surfers only, that’s the session. The swell is still big at 10ft on Tuesday afternoon, but the wind goes cross, making it less appealing. Wednesday morning the 2nd looks okay too; it drops to 6ft but goes glassy with a clean southerly groundswell. So, mark your calendar for the first few days of September, but don't hold your breath on the rest of August.
- Rusty
Short Range ForecastMostly dry. Warm (max 20°C on Thu morning, min 12°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Fri morning, min 11°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | ESE 6 | E 6 | E 12 | E 10 | ENE 5 | NE 6 | NE 6 | NE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 6 | S 8 | SSE 4 | S 9 | S 6 | S 10 | NNE 5 | S 10 | S 9 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 42 | 42 | 67 | 54 | 107 | 80 | 54 | 16 | 19 | 22 | 41 | 15 | 12 | 5 | 6 | 6 | 28 | 56 | 45 | 26 | 22 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross | glassy | cross-on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | cross | on |
High Tide | 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 | 5:53AM0.92m | 5:42PM1.36m | ||||||||
Low Tide | 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 | 11:06AM0.52m | 00:37AM0.30m | ||||||||
 | |  |  |  | | | |  | | | | | | | | | | | |  | |
 | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — |
 | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 |
Temp °C | 16 | 16 | 14 | 19 | 17 | 16 | 20 | 18 | 17 | 17 | 17 | 14 | 17 | 16 | 13 | 16 | 16 | 13 | 22 | 21 | 14 |
Feels °C | 13 | 12 | 12 | 14 | 13 | 13 | 17 | 15 | 14 | 14 | 14 | 11 | 15 | 14 | 12 | 13 | 13 | 11 | 18 | 18 | 13 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | S 10 | ENE 5 | ESE 6 | E 10 | ENE 6 | ENE 6 | NE 6 | ENE 6 | ENE 6 | S 5 | ENE 6 | NE 6 | SSE 4 | SSE 5 | S 6 | S 10 | ENE 5 | S 10 | S 9 | S 8 |
| kJ | 42 | 29 | 17 | 49 | 48 | 43 | 22 | 16 | 19 | 22 | 4 | 15 | 5 | 5 | 6 | 6 | 28 | 17 | 45 | 26 | 22 |
Swell 2 Height (m) Direction Period (s) | S 10 | ESE 14 | E 12 | E 10 | S 8 | ESE 9 | SE 8 | ESE 6 | E 10 | S 11 | S 10 | S 4 | S 8 | ENE 6 | E 3 | S 8 | — | S 10 | NE 5 | NE 8 | NE 5 |
| kJ | 35 | 36 | 67 | 54 | 5 | 31 | 17 | 13 | 2 | 2 | 2 | 1 | 12 | 3 | 1 | 5 | — | 28 | 6 | 16 | 6 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 10 | ESE 7 | SE 15 | E 15 | E 11 | E 11 | E 11 | S 12 | — | — | S 9 | SE 7 | S 8 | S 9 | ENE 6 | E 15 | ENE 9 | ENE 8 | S 15 | ENE 7 |
| kJ | 9 | 7 | 21 | 9 | 4 | 2 | 2 | 2 | 3 | — | — | 2 | 2 | 1 | 6 | 3 | 4 | 8 | 7 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | — | E 6 | NE 4 | ENE 6 | ENE 5 | NE 6 | NE 6 | — | WNW 2 | — | ENE 7 | — | SSW 3 | S 4 | — | — | ENE 4 | NNE 5 | WNW 2 | NE 5 | — |
| kJ | — | 42 | 22 | 39 | 107 | 80 | 54 | — | 1 | — | 41 | — | 2 | 7 | — | — | 11 | 56 | 1 | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 89 | 7 | 17 | 335 | 7 | 7 | 17 | 78 | 17 | 90 | 139 | 35 | 557 | 139 | 28 | 107 | 7 | 12 | 12 | 32 |
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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