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:
Cow Bay surfForecast / Nova Scotia / Canada
48hr Weather and Surf, issued 7 am Friday 12 Dec 2025 ASTForecast update in hr min s Forecast update imminent
Cow Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cow Bay sea temperature is
5.9° C
(Which is slightly warmer than usual)How big are the waves at Cow Bay today?
The current surf forecast for Cow Bay at 11AM is: 0.3m 11s primary swell from a Southeast direction (forecast issued at 07:00am December 12). An open ocean swell of 4.0m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (AST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | 0.5ft (0.2m) | 11s |
| Evening (12 Dec) | 1.5ft (0.4m) | 11s |
Table - waves today at Cow Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 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 | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 10 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 9 | 9 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 0 | 0 | 19 | 11 | 0 | 41 | 40 | 25 | 22 | 22 | 26 | 37 | 37 | 33 | 32 | 27 | 27 | 37 | 23 | 15 | 15 | 39 | 38 | 25 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross | off | glass | glass | cross- off | cross- off | off |
High Tide / height (m) | 2:02PM 1.33 | 2:45AM 1.45 | 3:06PM 1.29 | 3:35AM 1.46 | 4:04PM 1.28 | |||||||||||||||||||
Low Tide / height (m) | 8:23AM 0.48 | 8:35PM 0.41 | 9:24AM 0.48 | 9:29PM 0.47 | 10:21AM 0.45 | 10:22PM 0.52 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | 7:39 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:32 | - | - | - | - | - | - | - | 4:32 | - | - | - | - | - | - | - | 4:32 | - | - | - | - |
 |  |  | | |  | | | |  | | | | | | |  |  | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 3 | - | - | - | - | - | - |
| Temp. °C | -3 | -3 | -3 | -2 | -3 | -3 | -2 | -2 | -2 | -2 | -1 | 1 | 0 | 1 | 3 | 4 | 4 | 3 | 1 | 2 | 1 | 0 | -1 | -1 |
| Feels °C (?) | -13 | -14 | -14 | -13 | -13 | -12 | -11 | -11 | -10 | -10 | -9 | -7 | -7 | -4 | -3 | -2 | -2 | -2 | -3 | -1 | -2 | -3 | -7 | -7 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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