
Surf Forecasts:
Long Reef surf forecast from 18 Sep 2026:
- Best quality surf: Friday 18 Sep, 10PM (local time) - 2ft (0.6m), 17s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 22 Sep, 4AM (local time) - 8ft (2.5m), 10s period, S swell with 1,137 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 10PM (local time) - 2ft (0.6m), 17s 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 18) at 10PM. The primary swell is predicted to be 0.6m and 17s period with a secondary swell of 1.0m and 9s. Another secondary swell of 0.6m and 7s is also forecast. Another secondary swell of 0.4m and 3s is also forecast. 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 2.5m 10s and forecast to arrive on Tuesday (Sep 22) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Sep 20) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 18th Sep) | 2ft (0.6m) 17s |
| Best Surf | 10PM (Fri 18th Sep) | 2ft (0.6m) 17s |
| Most Powerful | 4AM (Tue 22nd Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 16°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Mon night. Warm (max 29°C on Mon morning, min 14°C on Mon night). Winds decreasing (fresh winds from the SSE on Mon morning, light winds from the NE by Wed morning). | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 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) | S 9 | S 9 | S 16 | S 10 | S 9 | S 10 | S 10 | S 18 | S 17 | S 11 | S 5 | S 10 | SSE 8 | S 10 | S 10 | S 16 | ENE 6 | S 12 | NE 6 | NE 6 | NE 7 |
Wave Graph | |||||||||||||||||||||
209 | 244 | 190 | 90 | 80 | 44 | 135 | 157 | 147 | 112 | 141 | 1070 | 318 | 486 | 279 | 262 | 161 | 169 | 108 | 269 | 255 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | off | off | cross-on | off | glassy | cross-on | cross-off | off | cross | cross | cross-on | cross-on | cross-on | cross-on | on | cross | cross-on | cross-on | cross |
High Tide | 12:57PM1.26m | 1:54AM0.86m | 2:05PM1.23m | 3:19AM0.86m | 3:17PM1.24m | 4:28AM0.91m | 4:18PM1.28m | 5:17AM0.99m | 5:08PM1.34m | 5:57AM1.08m | 5:50PM1.40m | 6:32AM1.18m | 6:30PM1.44m | ||||||||
Low Tide | 8:06PM0.49m | 7:06AM0.59m | 9:23PM0.48m | 8:25AM0.61m | 10:27PM0.44m | 9:41AM0.58m | 11:15PM0.37m | 10:42AM0.52m | 11:53PM0.30m | 11:32AM0.44m | 00:26AM0.23m | 12:16PM0.36m | 00:58AM0.17m | ||||||||
5:50 | — | — | 5:48 | — | — | 5:48 | — | — | 5:47 | — | — | 5:45 | — | — | 5:43 | — | — | 5:41 | — | — | |
— | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 3 | 1 | — | — | — | 1 | 2 |
Temp °C | 19 | 18 | 18 | 27 | 27 | 22 | 25 | 26 | 25 | 29 | 15 | 14 | 14 | 14 | 15 | 16 | 17 | 17 | 19 | 18 | 19 |
Feels °C | 16 | 14 | 16 | 24 | 23 | 18 | 21 | 23 | 21 | 23 | 10 | 10 | 10 | 10 | 13 | 15 | 16 | 14 | 15 | 13 | 18 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 10 | S 9 | S 10 | S 10 | S 8 | S 17 | S 11 | NE 4 | S 18 | SSE 8 | S 10 | S 10 | S 10 | S 10 | ENE 6 | S 11 | S 10 | S 10 |
209 | 244 | 110 | 90 | 80 | 44 | 135 | 66 | 147 | 112 | 1 | 26 | 318 | 486 | 279 | 162 | 133 | 90 | 108 | 78 | 31 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | ESE 8 | S 16 | SE 8 | SE 7 | S 17 | SSW 5 | S 18 | S 10 | S 16 | E 11 | — | S 11 | S 16 | S 17 | S 16 | S 15 | S 12 | — | E 12 | E 12 |
82 | 72 | 190 | 14 | 8 | 24 | 7 | 157 | 53 | 46 | 2 | — | 152 | 48 | 195 | 262 | 72 | 169 | — | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | S 18 | S 18 | ESE 7 | S 15 | S 18 | ESE 7 | S 18 | S 4 | S 7 | NE 4 | — | — | E 11 | E 11 | E 11 | E 13 | S 19 | E 13 | — | S 17 | S 17 |
57 | 97 | 36 | 71 | 24 | 5 | 56 | 4 | 23 | 3 | — | — | 2 | 2 | 2 | 3 | 7 | 3 | — | 6 | 6 | |
Wind waves Height (m) Direction Period (s) | — | NE 2 | — | W 3 | NE 2 | WSW 2 | SW 4 | ENE 3 | WNW 2 | NW 3 | S 5 | S 10 | — | — | E 4 | E 6 | ENE 6 | NE 6 | NE 6 | NE 6 | NE 7 |
— | 2 | — | 3 | 1 | 1 | 12 | 6 | 1 | 3 | 141 | 1070 | — | — | 9 | 149 | 161 | 88 | 104 | 269 | 255 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 22 | 0 | 0 | 35 | 0 | 0 | 22 | 0 | 0 | 190 | 57 | 100 | 78 | 22 | 17 | 22 | 23 | 4 | 509 | 0 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










