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Mona Vale-The Basin surfForecast / NSW – Sydney North Coast / Australia

information circle12 Day Weather and Surf, issued 3 pm Tuesday 19 Aug 2025 AEST
Forecast update in hr  min  s Forecast update imminent
Mona Vale-The Basin surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mona Vale-The Basin sea temperature is
19.4° C
 (Which is 1.4°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Mona Vale-The Basin this week:

The surf forecast for Mona Vale-The Basin over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 22) at 10AM. The primary swell is predicted to be 3.0m and 8s period with a secondary swell of 2.5m and 8s. Another secondary swell of 0.2m and 11s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mona Vale-The Basin in the next 12 days are 3.5m 8s and forecast to arrive on Friday (Aug 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 1.8m 7s period and expected on Sunday (Aug 24) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Fri 22nd Aug)10ft (3.0m) 8s
Best Surf10AM (Fri 22nd Aug)10ft (3.0m) 8s
Most Powerful 4AM (Fri 22nd Aug)11ft (3.5m) 8s

Table - best surf conditions forecast for Mona Vale-The Basin over the next 12 days.

Hourly12 Days
Sydney North Coast Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 

Short Range Forecast Heavy rain (total 110mm), heaviest during Thu morning. Very mild (max 17°C on Wed night, min 14°C on Tue afternoon). Winds increasing (light winds from the SSW on Tue afternoon, fresh winds from the ENE by Thu night).

Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Sat night. Very mild (max 18°C on Mon morning, min 12°C on Sun night). Wind will be generally light.

Tue
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
1
1
4
2
2
2
0
0
0
0
1
1
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
E
0.6
E
1.5
E
1.9
E
2.1
E
2.2
ENE
2.4
ENE
3
NE
3
NE
1.8
ENE
1.6
ENE
1.4
ENE
1.3
ENE
1.1
ENE
0.9
ENE
0.9
ENE
1
E
0.8
ENE
0.7
E
0.8
ENE
0.9
ENE
Period(s) (?)10106677788888888888788
Wave
Graph
(?)Metric surfscale
Energy (?)71681522634324757811391187937530930827414911011612481839089
Wind
(km/h)
5
SSW
10
ENE
20
E
25
E
30
ENE
25
ENE
25
ENE
30
NE
10
NNE
5
NNE
10
W
15
WSW
20
S
10
SW
15
SSW
10
SE
10
NW
10
WNW
15
ENE
10
WNW
10
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
on		crosscross-
on		onoffoffcrossoffoff
High Tide
/ height (m)
5:06PM
1.53
6:03AM
1.01
6:03PM
1.59
6:53AM
1.07
6:52PM
1.63
7:37AM
1.14
7:36PM
1.64
8:15AM
1.20
8:16PM
1.62
8:52AM
1.25
8:53PM
1.56
9:27AM
1.29
9:29PM
1.47
10:01AM
1.32
Low Tide
/ height (m)
12:06AM
0.20
11:26AM
0.39
12:56AM
0.14
12:21PM
0.34
1:38AM
0.10
1:10PM
0.29
2:16AM
0.08
1:54PM
0.26
2:50AM
0.09
2:37PM
0.26
3:21AM
0.12
3:18PM
0.27
3:51AM
0.16
Tue
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Sunrise--6:28--6:26--6:26--6:24--6:24--6:22--6:20
Sunset5:27--5:28--5:28--5:29--5:30--5:30--5:30--
thunderstorm mod rainheavy rainheavy rainheavy rainheavy rainheavy rainrain showersrain showersrain showerspart cloudpart cloudthunderstorm rain showerspart cloudpart cloudclearclearclearclearclear
Rain (mm)
21012141519191812--17-------
Temp. °C151515151715151616171517171516161518171520
Feels °C (?)141211101110101215161314141312131417151417
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for NSW - Sydney North Coast

  1. weather stationWind Update Continuing clean conditions at Mona Vale-The Basin (calm at Davidson 14 km from Mona Vale-The Basin). 0.6m 10s swell from the E with a 0.6m 4s local chop, also from the E. 2 swells combining to make bigger set waves.

    39 minutes ago Mona Vale-The Basin
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Actual: 39 min ago

2 km/h
N
Clean
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mona Vale-The Basin surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Mona Vale-The Basin at:
surf-forecast.com

Information about the Mona Vale-The Basin Surf forecast

The above surf forecast table for Mona Vale-The Basin provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Mona Vale-The Basin can be found by selecting the local surf guide option on the grey menu. Our Mona Vale-The Basin 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 (Mona Vale-The Basin) 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 Mona Vale-The Basin 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.

Mona Vale-The Basin is 8 km (5 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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