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:
Stewart Island - Saber Reef surfForecast / Southland / New Zealand
48hr Weather and Surf, issued 12 pm Monday 15 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Stewart Island - Saber Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Stewart Island - Saber Reef sea temperature is
13.3° C
(Which is 1.9°C warmer than normal for this time of year)How big are the waves at Stewart Island - Saber Reef today?
The current surf forecast for Stewart Island - Saber Reef at 4PM is: 0.7m 7s primary swell from a East direction (forecast issued at 12:00pm December 15). An open ocean swell of 0.9m 13s is not directed at the surf break, a second open ocean swell of 2.5m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 4.5ft (1.4m) | 7s |
| Afternoon (15 Dec) | 2.5ft (0.7m) | 7s |
| Evening (15 Dec) | 2ft (0.6m) | 8s |
Table - waves today at Stewart Island - Saber Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 10 | 10 | 9 | 8 | 11 | 10 | 10 | 10 | 10 | 10 | 5 | 5 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 326 | 94 | 45 | 55 | 42 | 45 | 33 | 32 | 48 | 47 | 44 | 24 | 18 | 36 | 34 | 33 | 18 | 18 | 35 | 51 | 12 | 23 | 23 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross | cross |
High Tide / height (m) | 10:47AM 1.89 | 11:15PM 1.89 | 11:33AM 1.91 | 12:01AM 1.93 | 12:15PM 1.94 | 12:43AM 1.98 | ||||||||||||||||||
Low Tide / height (m) | 4:57PM 0.52 | 5:20AM 0.56 | 5:42PM 0.50 | 6:04AM 0.55 | 6:24PM 0.46 | 6:46AM 0.54 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 |
| Sunset | - | - | - | 9:39 | - | - | - | - | - | - | - | 9:39 | - | - | - | - | - | - | - | 9:40 | - | - | - | - |
 |  | | |  |  | |  | |  | |  | | | | | | | | |  | | | | |
Rain (mm) | - | 4 | 1 | - | - | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 12 | 13 | 13 | 13 | 12 | 11 | 11 | 11 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 |
| Feels °C (?) | 11 | 5 | 7 | 6 | 6 | 3 | 3 | 3 | 4 | 5 | 5 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 7 | 6 | 6 | 6 | 7 |
- 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 Stewart Island - Saber Reef 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