Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Manly-South Steyne surfForecast / NSW – Sydney North Coast / Australia
48hr Weather and Surf, issued 4 pm Tuesday 16 Dec 2025 AEDTForecast update in hr min s Forecast update imminent
Manly-South Steyne surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Manly-South Steyne sea temperature is
22.4° C
(Which is slightly warmer than usual)How big are the waves at Manly-South Steyne today?
The current surf forecast for Manly-South Steyne at 9PM is: 1.3m 12s primary swell from a South direction (forecast issued at 04:00pm December 16). An open ocean swell of 0.4m 6s is not directed at the surf break, a second open ocean swell of 0.6m 6s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (AEDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 4.5ft (1.4m) | 10s |
| Evening (16 Dec) | 4.5ft (1.3m) | 12s |
Table - waves today at Manly-South Steyne. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 6 | 6 | 6 | 6 | 6 | 10 | 10 | 10 | 10 | 10 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 379 | 488 | 488 | 403 | 389 | 319 | 250 | 242 | 192 | 149 | 146 | 110 | 81 | 124 | 99 | 77 | 59 | 133 | 32 | 31 | 31 | 31 | 17 | 15 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | cross- on | cross- on | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | glass | glass | cross- off | cross |
High Tide / height (m) | 6:56PM 0.97 | 7:10AM 1.44 | 7:43PM 0.97 | 7:47AM 1.49 | 8:26PM 0.99 | 8:25AM 1.53 | ||||||||||||||||||
Low Tide / height (m) | 1:16PM 0.37 | 12:29AM 0.40 | 1:58PM 0.30 | 1:09AM 0.40 | 2:38PM 0.25 | 1:48AM 0.39 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:39 | - |
| Sunset | - | - | 8:00 | - | - | - | - | - | - | - | 8:01 | - | - | - | - | - | - | - | 8:01 | - | - | - | - | - |
 |  | |  |  | |  | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 20 | 25 | 26 | 25 | 24 | 25 | 24 | 23 | 24 | 28 |
| Feels °C (?) | 19 | 18 | 18 | 17 | 18 | 18 | 19 | 19 | 17 | 16 | 17 | 17 | 18 | 17 | 20 | 24 | 24 | 22 | 22 | 25 | 26 | 24 | 24 | 29 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Manly-South Steyne 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.
Nearest