Surf Forecasts:
Long Reef surf forecast from 9 Sep 2026:
- Best quality surf: Thursday 10 Sep, 10PM (local time) - 8ft (2.4m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 4AM (local time) - 10ft (3.0m), 10s period, S swell with 2,025 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 10PM (local time) - 8ft (2.4m), 10s 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 Thursday (Sep 10) at 10PM. The primary swell is predicted to be 2.4m and 10s period with a secondary swell of 0.2m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Long Reef in the next 16 days are 3.0m 10s and forecast to arrive on Thursday (Sep 10) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Monday (Sep 14) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 10th Sep) | 8ft (2.4m) 10s |
| Best Surf | 10PM (Thu 10th Sep) | 8ft (2.4m) 10s |
| Most Powerful | 4AM (Thu 10th Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk surf.
First week has some solid size but the wind is a mixed bag. The real standouts are Saturday morning and then a nice window late in the second week.
Thursday, September 10th kicks off rough. Long Reef has a 2.4m south swell, but that cross-off wind from the SSW at 12 mph keeps it clean enough for a look. The energy is moderate (1082). Afternoon goes onshore and messy, so morning is your only shot.
Friday, September 11th – morning is your best early call. Dropping to 1.8m from the south, cross-off wind from the SSW at 9 mph, clean. Energy is moderate (647). Afternoon turns cross-onshore and goes flat.
Saturday, September 12th is the pick of the first week. Glassy in the morning with a clean 1.2m south swell at a nice 12-second period. That’s a groundswell, and for a reef like Long Reef, it’s gonna shape up beautifully. Energy is moderate (612). This is the one to aim for. Afternoon gets blown out.
Sunday, September 13th through Tuesday, September 15th – forget it. Swell drops under 1m, winds are onshore or cross-shore, energy is weak (between 140 and 261). Choppy and poor. Tuesday afternoon sees a spike to 1.8m but with a short, choppy 6-second period and strong cross-wind – not worth it.
Wednesday, September 16th – still average. 1.6m south swell with cross-onshore wind and a 8-second period. Energy is moderate (676) but wind ruins it.
Thursday, September 17th – a nice surprise. Glassy again in the morning with a 1.1m south swell at 10 seconds. Clean. Energy is low (242) but for a morning paddle it’s fun.
Friday, September 18th – small. 0.6m with offshore wind from the west at 6 mph. Clean but tiny. Energy is weak (129). Not worth suiting up for.
Now, Saturday, September 19th – a big pulse hits. 3.5m from the south – expert-only. Light cross-shore wind keeps it from being totally blown out, but energy is very strong (2229). Afternoon gets messy with onshore wind. Only for the experienced.
Sunday, September 20th – afternoon is the standout of the second week. Swell drops to 1.2m from the south with an 11-second period, and wind goes offshore from the west at 12 mph. Clean, lined-up waves. Energy is moderate (568). This is a solid session.
Monday, September 21st – onshore wind returns, swell drops. Not good.
Tuesday, September 22nd to Wednesday, September 23rd – messy. Short-period, weak swell and onshore wind. Not worth paddling out. Wednesday afternoon sees another big pulse to 3.0m but with onshore wind – messy and big, only for experts.
Thursday, September 24th – glassy again in the morning! A 2.1m south-southeast swell at 8 seconds, clean as a whistle. Energy is moderate (772). That’s a nice, powerful wave if you can handle the size. Afternoon gets a light onshore and cloud.
Friday, September 25th – a final clean morning with 1.3m from the south, cross-off wind from the WNW at 9 mph. Clean and fun to close out. Energy is moderate (434).
So, overall: Saturday the 12th morning is the best bet for clean, glassy waves at a manageable size, and Sunday the 20th afternoon is another beauty with offshore wind and a nice long-period groundswell. Crowds are always a possibility at Long Reef, so get there early on those standouts.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat morning, min 11°C on Wed night). Winds decreasing (fresh winds from the S on Wed night, calm by Sat morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 22°C on Mon morning, min 15°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 9 | S 9 | S 10 | S 10 | S 10 | S 10 | S 12 | S 11 | S 10 | S 10 | S 11 | S 12 | S 11 | S 11 | NE 6 | S 10 | SSE 6 | S 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 2573 | 963 | 1005 | 967 | 605 | 470 | 392 | 411 | 284 | 194 | 177 | 184 | 174 | 119 | 82 | 77 | 89 | 252 | 742 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross-off | cross-on | cross-off | glassy | on | cross | cross-on | cross-on | cross | cross | cross-on | cross-off | cross | cross | cross |
High Tide | 7:28AM1.29m | 7:32PM1.63m | 8:07AM1.37m | 8:15PM1.57m | 8:45AM1.43m | 8:56PM1.48m | 9:22AM1.46m | 9:36PM1.36m | 9:58AM1.46m | 10:16PM1.23m | 10:35AM1.43m | 10:58PM1.10m | |||||||
Low Tide | 1:23AM0.04m | 1:14PM0.21m | 2:01AM0.04m | 2:02PM0.18m | 2:36AM0.07m | 2:47PM0.17m | 3:09AM0.12m | 3:32PM0.19m | 3:41AM0.20m | 4:17PM0.24m | 4:12AM0.29m | 5:04PM0.30m | |||||||
 |  |  | | | |  | | | | | | | | |  |  | |  | |
 | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — |
 | — | — | 5:42 | — | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 15 | 14 | 15 | 15 | 16 | 15 | 15 | 17 | 17 | 16 | 18 | 18 | 17 | 22 | 20 | 22 | 17 | 15 | 15 |
Feels °C | 6 | 9 | 10 | 13 | 14 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 18 | 16 | 20 | 13 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | SE 10 | S 22 | S 10 | S 10 | S 10 | S 10 | S 12 | S 11 | S 10 | S 10 | S 11 | NE 6 | NE 6 | S 11 | NE 6 | NE 6 | NE 6 | NE 6 |
| kJ | 48 | 25 | 233 | 967 | 605 | 470 | 392 | 411 | 284 | 194 | 177 | 184 | 114 | 33 | 82 | 77 | 30 | 12 | 1 |
Swell 2 Height (m) Direction Period (s) | S 26 | S 23 | ESE 9 | E 15 | ENE 15 | ENE 14 | S 19 | S 19 | S 17 | S 20 | ENE 5 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | ENE 13 | ENE 13 | ENE 13 |
| kJ | 13 | 92 | 17 | 4 | 21 | 18 | 28 | 182 | 138 | 121 | 14 | 17 | 174 | 119 | 16 | 47 | 16 | 17 | 18 |
Swell 3 Height (m) Direction Period (s) | NE 16 | E 9 | E 9 | E 10 | ENE 15 | E 10 | ENE 13 | ENE 14 | ENE 14 | ENE 13 | S 17 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | E 16 | S 13 | S 18 |
| kJ | 10 | 2 | 2 | 2 | 21 | 2 | 18 | 19 | 19 | 16 | 49 | 17 | 17 | 17 | — | 15 | 5 | 4 | 6 |
Wind waves Height (m) Direction Period (s) | S 10 | S 9 | S 9 | — | — | — | — | — | ENE 2 | NE 4 | NE 4 | NE 4 | NNE 6 | — | NE 5 | — | S 10 | SSE 6 | S 9 |
| kJ | 2573 | 963 | 1005 | — | — | — | — | — | 1 | 22 | 21 | 31 | 164 | — | 68 | — | 89 | 252 | 742 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 78 | 1 | 58 | 0 | 0 | 6 | 0 | 0 | 170 | 0 | 17 | 509 | 0 | 0 | 123 | 0 | 139 | 191 | 213 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.
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