Long Reef Surf Break

Lat Long: 33.74° S 151.32° E

Long Reef Surf Forecast and Surf Report

Issued: 9 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Long Reef sea temperature is
17.8°C
0.2° 

Long Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (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 Powerful10PM (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 Forecast

Mostly 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 Summary

Mostly 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
Rating
(10 max)
3
0
1
0
0
0
1
0
4
2
0
1
2
2
3
2
0
0
2
2
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
S
11
0.9
S
8
0.6
S
11
0.7
S
9
0.6
S
9
0.9
NE
6
1
SSW
7
0.8
S
7
2.5
S
10
1.4
S
8
1.3
S
8
3.5
SSE
9
2.3
S
9
2.5
S
11
1.9
SSE
10
1.6
SSE
9
1.5
SSE
9
3
SSE
9
3
S
12
3
S
11
3
S
13
Wave Graph
Metric surfscale
Energy kJ
498
112
89
85
62
56
102
66
1447
253
223
1972
836
1570
725
418
359
1353
2559
2528
3012
Wind (km/h)
10
WSW
15
ENE
5
NW
20
N
25
WNW
25
WSW
25
WSW
15
SSE
10
WSW
5
WNW
15
ESE
35
S
20
SSW
10
SSE
10
NW
10
NW
30
SSE
35
S
30
SSW
30
S
20
S
Wind State
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
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:07
6:07
6:05
6:03
6:03
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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