Surf Forecasts:
Guillotines surf forecast from 11 Aug 2026:
- Best quality surf: Thursday 13 Aug, 7AM (local time) - 5ft (1.5m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 4PM (local time) - 5ft (1.5m), 11s period, S swell with 517 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 4AM (local time) - 3.5ft (1.1m), 9s period with S 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 Wednesday (Aug 12) at 4AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.5m and 10s. 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 1.5m 11s and forecast to arrive on Tuesday (Aug 11) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Sunday (Aug 16) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 12th Aug) | 3.5ft (1.1m) 9s |
| Best Surf | 7AM (Thu 13th Aug) | 5ft (1.5m) 8s |
| Most Powerful | 4PM (Tue 11th Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Guillotines over the next 16 days.
The Lowdown
Alright, let’s switch it up for those who think in feet and miles per hour.
Water temp is running about 64°F, which is a degree or so warmer than average for this time of year. Not a huge deal, but feels a little nicer.
First real window of surf is Tuesday 11 August morning. We’re looking at a clean 5ft S swell with a 10-second period, light cross-off breeze. The energy is solid, so it’s worth the paddle. That afternoon goes messy.
Wednesday 12 August and Thursday 13 August are mostly duds. Thursday morning is glassy but only 5ft of weak, short-period swell – not worth it.
Friday 14 August is tiny, with only 2-3ft. Saturday 15 August morning has 5ft SSW swell with offshore wind, but the period is a poor 6 seconds.
Monday 17 August morning is a good call: 5ft ESE swell, clean, light breeze, decent energy.
But the big one, the one to circle on the calendar, is Tuesday 25 August morning. That session is pumping: 8ft of S swell with a short 8-second period, but clean offshore wind strong at 12 mph. The energy reading is massive. That’s expert-only territory – big, powerful, and not for the faint of heart.
Sunday 23 August afternoon also shows a spike to 6ft NE swell with strong energy, but the wind is cross-off, so it’s a secondary play.
So get on Monday 17 August morning for a fun session, and if you’re an advanced surfer, hold out for Tuesday 25 August. That’s the one.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Tue morning, min 9°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Sat night. Very mild (max 15°C on Fri morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 10 | S 11 | S 10 | S 9 | S 8 | E 9 | S 7 | SSE 7 | S 9 | S 8 | S 7 | ENE 9 | S 6 | S 7 | S 17 | SSE 6 | SE 6 | SE 7 | ESE 7 | ESE 7 | ESE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 477 | 517 | 273 | 125 | 68 | 45 | 239 | 77 | 96 | 58 | 43 | 17 | 161 | 152 | 23 | 176 | 149 | 210 | 214 | 167 | 244 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross | glassy | cross | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy |
High Tide | 7:00PM1.70m | 7:54AM1.16m | 7:50PM1.72m | 8:39AM1.21m | 8:38PM1.69m | 9:23AM1.26m | 9:23PM1.60m | 10:05AM1.30m | 10:07PM1.48m | 10:46AM1.31m | 10:51PM1.33m | 11:27AM1.31m | 11:37PM1.18m | ||||||||
Low Tide | 12:30PM0.32m | 1:51AM-0.00m | 1:24PM0.27m | 2:36AM-0.02m | 2:15PM0.24m | 3:17AM-0.00m | 3:05PM0.23m | 3:56AM0.05m | 3:55PM0.26m | 4:33AM0.13m | 4:46PM0.30m | 5:08AM0.23m | 5:38PM0.36m | ||||||||
 | |  |  | | | | | | | |  | |  |  | | |  | | | | |
 | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — |
 | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 6 | 2 | 1 | 1 | 2 | 4 | 2 |
Temp °C | 18 | 18 | 12 | 18 | 18 | 12 | 15 | 15 | 12 | 15 | 15 | 13 | 15 | 14 | 13 | 14 | 14 | 14 | 14 | 14 | 14 |
Feels °C | 16 | 14 | 6 | 12 | 12 | 8 | 11 | 12 | 9 | 12 | 12 | 10 | 10 | 10 | 10 | 11 | 10 | 11 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 11 | S 10 | S 9 | S 8 | S 8 | S 7 | SSE 7 | S 9 | S 8 | S 7 | ENE 9 | ENE 9 | ENE 9 | S 10 | ENE 10 | S 10 | S 10 | ESE 7 | ESE 7 | ESE 7 |
| kJ | 477 | 517 | 273 | 125 | 68 | 30 | 108 | 77 | 96 | 58 | 43 | 17 | 17 | 17 | 17 | 9 | 31 | 31 | 214 | 167 | 244 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | E 10 | E 10 | E 9 | ENE 10 | ENE 10 | ENE 9 | ENE 10 | ENE 10 | SE 9 | SE 8 | E 7 | ENE 9 | S 15 | ENE 10 | S 8 | S 9 | S 8 | S 8 |
| kJ | 86 | 75 | 56 | 50 | 49 | 45 | 31 | 31 | 17 | 18 | 18 | 3 | 2 | 1 | 17 | 5 | 19 | 12 | 36 | 22 | 12 |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 9 | — | — | SE 14 | SE 8 | SE 12 | S 10 | SE 11 | S 19 | SE 10 | S 15 | SE 14 | S 19 | S 17 | E 13 | — | ENE 10 | ENE 9 | ENE 9 | S 13 |
| kJ | 45 | 20 | — | — | 8 | 2 | 6 | 8 | 5 | 7 | 4 | 4 | 8 | 7 | 23 | 4 | — | 9 | 28 | 28 | 4 |
Wind waves Height (m) Direction Period (s) | W 3 | ENE 3 | W 4 | W 3 | WSW 3 | WSW 3 | S 7 | — | — | — | — | S 6 | S 6 | S 7 | SSE 6 | SSE 6 | SE 6 | SE 7 | — | — | — |
| kJ | 2 | 2 | 12 | 5 | 3 | 2 | 239 | — | — | — | — | 122 | 161 | 152 | 150 | 176 | 149 | 210 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 7 | 10 | 7 | 7 | 0 | 0 | 45 | 0 | 0 | 55 | 10 | 0 | 55 | 69 | 0 | 0 | 0 | 0 | 0 | 0 |
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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