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:
Dunedin - St Clair surfForecast / Otago / New Zealand
48hr Weather and Surf, issued 12 pm Monday 15 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Dunedin - St Clair surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dunedin - St Clair sea temperature is
14.2° C
(Which is 2.7°C warmer than normal for this time of year)How big are the waves at Dunedin - St Clair today?
The current surf forecast for Dunedin - St Clair at 7PM is: 0.8m 4s primary swell from a South-southwest direction and 0.2m 13s secondary swell from a South-southwest direction (forecast issued at 12:00pm December 15). An open ocean swell of 1.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 1ft (0.3m) | 14s |
| Afternoon (15 Dec) | 1ft (0.3m) | 13s |
| Evening (15 Dec) | 0.5ft (0.2m) | 13s |
Table - waves today at Dunedin - St Clair. (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) (?) | 14 | 13 | 13 | 4 | 13 | 4 | 13 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 36 | 35 | 34 | 18 | 17 | 13 | 18 | 104 | 156 | 232 | 221 | 211 | 203 | 198 | 191 | 179 | 228 | 301 | 276 | 261 | 143 | 181 | 133 | 121 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- on | on | cross- on | cross- off | cross- off | cross | cross | glass | cross- on | cross- off | cross | cross | cross- off | cross | on | on | cross- on | glass | off | cross- off | glass |
High Tide / height (m) | 1:36PM 1.62 | 2:00AM 1.66 | 2:20PM 1.61 | 2:44AM 1.67 | 3:03PM 1.60 | 3:26AM 1.68 | ||||||||||||||||||
Low Tide / height (m) | 7:29AM 0.39 | 7:50PM 0.36 | 8:20AM 0.39 | 8:37PM 0.35 | 9:06AM 0.38 | 9:20PM 0.34 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 |
| Sunset | - | - | - | 9:22 | - | - | - | - | - | - | - | 9:23 | - | - | - | - | - | - | - | 9:24 | - | - | - | - |
 |  | |  |  |  |  |  |  |  | |  | |  | | | | | | |  |  | | | |
Rain (mm) | - | - | - | 2 | 6 | 3 | 1 | - | 2 | 6 | 4 | 13 | 3 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 19 | 20 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 11 | 9 | 10 | 10 | 8 | 8 | 11 | 13 | 13 | 12 | 11 | 11 | 12 | 12 |
| Feels °C (?) | 14 | 15 | 16 | 9 | 10 | 10 | 10 | 9 | 10 | 11 | 10 | 4 | 6 | 6 | 3 | 4 | 7 | 9 | 9 | 9 | 10 | 9 | 10 | 11 |
- 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 Dunedin - St Clair 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