
Surf Forecasts:
Long Reef surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 1AM (local time) - 8ft (2.5m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 10PM (local time) - 10ft (3.0m), 13s period, S swell with 3,415 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 10PM (local time) - 1.5ft (0.5m), 12s period with S swell.
Best Forecast Surf Conditions for Long Reef this week:
The surf forecast for Long Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 04) at 10PM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.7m and 8s. Another secondary swell of 0.5m and 4s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Long Reef in the next 16 days are 3.0m 13s and forecast to arrive on Thursday (Sep 10) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Sunday (Sep 06) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 4th Sep) | 1.5ft (0.5m) 12s |
| Best Surf | 1AM (Mon 7th Sep) | 8ft (2.5m) 10s |
| Most Powerful | 10PM (Thu 10th Sep) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s coming up for Long Reef.
First things first – the water temp is sitting at 18°, pretty much bang on average for this time of year, so no surprises there.
We’ve got a bit of a quiet start. Friday the 4th has the best of the early action with a clean 5ft south swell (moderate energy of 537) and a light cross-off breeze in the morning. That’s your best bet for the opening day – sets have a solid 11-second period, so there’s some proper groundswell push in the water. The 12-second swell on the 12th gives clean, high-quality lines but it comes with a cross-onshore, so not as clean.
Saturday the 5th drops right off – tiny, messy, not worth paddling out. Sunday the 6th has a brief window of clean conditions with a 3ft swell and offshore breeze, but the period is only 7 seconds, so it’s weak and a bit jumbled. Hold out.
Monday the 7th morning is the first real highlight – 5ft south swell, 8-second period, light offshore WNW breeze, clean, and the energy is moderate (263). Good little session for the crew who can get out early.
Tuesday the 8th sees the swell pick up – 8ft in the morning, 8ft in the afternoon with that south groundswell hitting 11 seconds. That afternoon session has strong wave energy (1579) but the wind shifts cross-onshore. The size is getting into expert territory – over 8ft – so only for the experienced. Still, when it’s that size on a reef, the setup is serious.
Wednesday the 9th morning offers another clean window – 5ft from the SSE, light offshore breeze, moderate energy (426). Worth a look.
Now, the real standout: Thursday the 17th afternoon. This one’s a cracker. 10ft of pure south groundswell with a 12-second period, light offshore wind, and a massive 3494 combined energy – that’s powerful, clean, and with very light wind, the reef will be firing. This is expert-only territory, no question, but if you’ve got the skills, this is the session to circle on the calendar. It’s more than a week away, so keep an eye on the forecast shifts, but man, it’s got potential.
Friday the 18th morning gets big too – 12ft swell, 14-second period, but with a fresh cross-shore and lumpy conditions. That size and power, combined with strong side wind, makes it a beast. Honestly, this setup looks more interesting for kite surfing than paddle surfing.
The last few days from the 14th to the 16th are mostly flat or blown out. The 15th has a 7ft NE swell, but it’s onshore and choppy – not worth it.
Bottom line: The first week offers a few clean windows for the competent, with Monday the 7th morning and Wednesday the 9th morning being the solid calls. But the big dance is Thursday the 17th afternoon – it’s the one that’ll get the heart pumping.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Sat afternoon, min 12°C on Sun night). Winds increasing (light winds from the W on Fri night, fresh winds from the NW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Mon morning, min 10°C on Wed night). Winds increasing (calm on Mon morning, strong winds from the S by Wed night). | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 11 | S 8 | S 11 | S 9 | S 9 | NE 6 | SSW 7 | S 7 | S 10 | S 8 | S 8 | SSE 9 | S 9 | S 11 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 12 | S 11 | S 13 |
Wave Graph | |||||||||||||||||||||
498 | 112 | 89 | 85 | 62 | 56 | 102 | 66 | 1447 | 253 | 223 | 1972 | 836 | 1570 | 725 | 418 | 359 | 1353 | 2559 | 2528 | 3012 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross | cross-off | off | off | cross | cross-off | off | on | cross | cross-off | cross-on | cross-off | cross-off | cross | cross | cross-off | cross | cross-off |
High Tide | 1:26PM1.41m | 2:17AM0.95m | 2:40PM1.43m | 3:45AM0.95m | 3:54PM1.48m | 4:59AM1.01m | 5:00PM1.55m | 5:57AM1.10m | 5:56PM1.61m | 6:45AM1.20m | 6:46PM1.64m | 7:28AM1.29m | 7:32PM1.63m | ||||||||
Low Tide | 8:24PM0.36m | 7:48AM0.46m | 9:47PM0.31m | 9:08AM0.47m | 10:57PM0.23m | 10:24AM0.42m | 11:54PM0.15m | 11:28AM0.35m | 00:41AM0.08m | 12:24PM0.28m | 1:23AM0.04m | 1:14PM0.21m | 2:01AM0.04m | ||||||||
6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:01 | — | — | |
— | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 16 | 29 | 31 | 24 | 20 | 20 | 17 | 19 | 19 | 16 | 13 | 14 | 14 | 19 | 16 | 13 | 12 | 15 | 15 |
Feels °C | 17 | 14 | 15 | 24 | 26 | 20 | 16 | 16 | 15 | 17 | 16 | 8 | 8 | 11 | 12 | 17 | 11 | 4 | 5 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 8 | S 7 | S 9 | NE 5 | NE 6 | NE 7 | S 7 | S 10 | S 8 | S 8 | ENE 10 | S 9 | S 11 | SSE 10 | SSE 9 | NE 9 | NE 9 | S 21 | S 18 | S 13 |
498 | 112 | 52 | 85 | 54 | 56 | 30 | 66 | 1058 | 253 | 223 | 11 | 836 | 1570 | 725 | 418 | 3 | 3 | 223 | 758 | 3012 | |
Swell 2 Height (m) Direction Period (s) | NE 8 | ENE 10 | S 11 | ENE 9 | S 9 | S 10 | E 11 | NE 7 | NE 6 | NE 8 | E 10 | — | SE 9 | ENE 10 | NE 10 | NE 9 | S 16 | E 16 | E 16 | NE 15 | S 23 |
20 | 18 | 89 | 17 | 62 | 44 | 9 | 15 | 2 | 2 | 8 | — | 29 | 9 | 4 | 3 | 5 | 5 | 5 | 9 | 260 | |
Swell 3 Height (m) Direction Period (s) | ENE 10 | S 18 | NE 4 | NE 7 | E 9 | E 11 | — | E 10 | E 10 | E 10 | NE 7 | — | ENE 10 | — | — | E 16 | E 17 | E 16 | NE 16 | NE 15 | ENE 15 |
19 | 26 | 13 | 2 | 7 | 9 | — | 9 | 8 | 8 | 2 | — | 10 | — | — | 5 | 6 | 5 | 10 | 9 | 21 | |
Wind waves Height (m) Direction Period (s) | — | NE 8 | — | NNE 4 | WNW 3 | WSW 4 | SSW 7 | — | S 10 | — | — | SSE 9 | — | — | — | NNW 2 | SSE 9 | SSE 9 | S 12 | S 11 | — |
— | 28 | — | 10 | 1 | 11 | 102 | — | 1447 | — | — | 1972 | — | — | — | 1 | 359 | 1353 | 2559 | 2528 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 35 | 0 | 17 | 0 | 9 | 0 | 1 | 0 | 0 | 22 | 191 | 6 | 1 | 0 | 0 | 137 | 191 | 78 | 399 | 6 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Long Reef Surf forecast
The above surf forecast table for Long Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Long Reef can be found by selecting the local surf guide option on the grey menu. Our Long Reef 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 (Long Reef) 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 Long Reef 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.
Long Reef 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.










