Surf Forecasts:
Collaroy surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 7AM (local time) - 5ft (1.6m), 7s period, NE swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 10PM (local time) - 6.5ft (2.0m), 7s period, NE swell with 379 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1PM (local time) - 1.5ft (0.4m), 10s period with ENE swell.
Best Forecast Surf Conditions for Collaroy this week:
The surf forecast for Collaroy over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 1PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.6m and 5s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Collaroy in the next 16 days are 2.0m 7s and forecast to arrive on Monday (Sep 07) 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 1.6m 11s period and expected on Sunday (Sep 06) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 2nd Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 7AM (Tue 8th Sep) | 5ft (1.6m) 7s |
| Most Powerful | 10PM (Mon 7th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Collaroy over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s have a look at what’s coming up for Collaroy. I gotta be straight with you – the next couple of weeks are mostly flat and pretty ordinary. We’ve got a big run of poor surf with barely a ripple on offer until we hit the second Sunday. After that, things start to look a bit more promising, so hold tight.
For the first week and a half, from the 1st through to the 12th of September, it’s a total write-off. Swell is tiny – nothing over 3 ft – with a mix of light onshore and cross-shore winds, and wave energy is weak (values from 5 to just 100). It’s not worth paddling out for. Wednesday the 3rd gives a couple clean windows with cross-offshore winds, but the swell is only 1 ft. Even the most optimistic surfer wouldn’t get excited about that. There’s a short period swell on the 5th (5 seconds), which is just choppy junk. Honestly, you’d be better off doing something else.
Then from the 9th to the 11th, there’s zero swell – literally 0 combined energy. Zilch. Flat as a tack.
Now, here’s where it gets interesting. Sunday the 13th of September is the standout. Early morning at Collaroy (a beach and point break, fairly exposed to swell) we’ve got a 4 ft groundswell from the SE with a 10-second period, and combined energy jumps to 489 – that’s strong wave energy. Wind is light offshore from the SW, making for clean conditions. This is the pick of the whole forecast. The water temp is about 63°, which is pretty normal for this time of year. Afternoon winds swing southerly and moderate, so that morning slot is the one to aim for. It’s a consistent break, and crowds are sometimes a thing, but early should be fine.
Monday the 14th also looks good early – glassy conditions with a 4 ft SE swell (10-second period, energy 275). That’s a moderate to strong energy, and with no wind, it’ll be silky smooth. This is your second-best window. After lunch, the onshore kicks in and chops it up.
After that, Tuesday the 15th and Wednesday the 16th offer small, ordinary surf – 3 ft to 4 ft, with cleanish wind but lower energy (102 to 206). Not terrible, but not worth getting excited about.
So bottom line: the first 12 days are a drought. Sunday the 13th and Monday morning the 14th are the only real standouts. Get on it if you can.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 13°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sat morning, min 14°C on Sat night). Winds decreasing (fresh winds from the WNW on Sat afternoon, light winds from the SE by Sun morning). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | ENE 11 | ENE 11 | NE 6 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | NE 7 | ENE 10 | NE 5 | NNE 5 | NE 5 | NE 6 | E 11 | NE 6 | ENE 5 | NE 6 | NE 6 | NE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 23 | 37 | 34 | 33 | 33 | 33 | 19 | 19 | 18 | 7 | 19 | 21 | 28 | 14 | 12 | 9 | 5 | 27 | 50 | 92 | 292 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross-off | cross | cross-off | cross-off | off | cross-on | on | cross | cross | cross-off | off | cross | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 10:42AM1.42m | 10:55PM1.24m | 11:27AM1.43m | 11:48PM1.13m | 12:21PM1.42m | 00:54AM1.02m | 1:26PM1.41m | 2:17AM0.95m | 2:40PM1.43m | 3:45AM0.95m | 3:54PM1.48m | 4:59AM1.01m | 5:00PM1.55m | ||||||||
Low Tide | 4:57PM0.29m | 4:59AM0.25m | 5:54PM0.32m | 5:44AM0.33m | 7:03PM0.35m | 6:39AM0.40m | 8:24PM0.36m | 7:48AM0.46m | 9:47PM0.31m | 9:08AM0.47m | 10:57PM0.23m | 10:24AM0.42m | 11:54PM0.15m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | |  | | |
 | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — |
 | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 20 | 26 | 26 | 20 | 24 | 24 | 16 | 19 | 17 | 18 | 26 | 25 | 20 | 17 | 16 | 16 | 20 | 19 | 18 |
Feels °C | 18 | 22 | 17 | 22 | 23 | 17 | 19 | 19 | 11 | 15 | 13 | 16 | 20 | 18 | 16 | 14 | 12 | 14 | 17 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | S 10 | S 8 | NE 5 | S 10 | NE 5 | S 9 | S 11 | S 9 | S 8 | S 10 | S 10 | NE 7 |
| kJ | 196 | 182 | 133 | 106 | 76 | 50 | 74 | 52 | 33 | 249 | 44 | 21 | 71 | 14 | 27 | 632 | 152 | 108 | 192 | 153 | 233 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | NE 6 | NE 6 | NNE 5 | ENE 10 | NE 4 | NE 6 | NE 7 | SW 5 | SSW 11 | S 7 | ENE 9 | S 10 | NE 6 | NE 6 | S 11 | S 12 | E 10 | E 10 | S 10 |
| kJ | 23 | 37 | 31 | 19 | 11 | 33 | 10 | 8 | 16 | 6 | 25 | 26 | 17 | 46 | 12 | 5 | 94 | 141 | 8 | 8 | 117 |
Swell 3 Height (m) Direction Period (s) | ENE 8 | N 12 | ENE 10 | ENE 10 | ENE 10 | SSE 13 | ENE 10 | ENE 10 | ENE 10 | NE 7 | ENE 10 | S 10 | S 15 | E 9 | E 11 | E 11 | NE 6 | E 10 | — | — | SSE 12 |
| kJ | 7 | 3 | 34 | 33 | 33 | 32 | 19 | 19 | 18 | 7 | 19 | 34 | 18 | 7 | 9 | 9 | 5 | 8 | — | — | 30 |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 4 | NW 3 | NW 3 | — | NW 2 | NNW 3 | WSW 3 | SW 5 | — | NE 3 | — | NNE 5 | W 4 | — | SW 4 | — | ENE 5 | NE 6 | NE 6 | NE 7 |
| kJ | 2 | 17 | 2 | 2 | — | 1 | 8 | 4 | 31 | — | 8 | — | 28 | 24 | — | 9 | — | 27 | 50 | 92 | 292 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 53 | 1 | 1 | 37 | 7 | 5 | 170 | 1 | 3 | 35 | 1 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Collaroy Surf forecast
The above surf forecast table for Collaroy provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Collaroy can be found by selecting the local surf guide option on the grey menu. Our Collaroy 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 (Collaroy) 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 Collaroy 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.
Collaroy is 2 km (1 miles) from Dee Why. If you plan a holiday in Sydney North Coast, look for hotels and other accommodation in Dee Why. Dee Why has rooms for a wide range of budgets as well as car hire and transport links.
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