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:
Mill Bay surfForecast / Scot – Orkney / UK
48hr Weather and Surf, issued 11 pm Wednesday 10 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Mill Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mill Bay sea temperature is
9.9° C
(Which is normal for this time of year)How big are the waves at Mill Bay today?
The current surf forecast for Mill Bay at 5AM is: 0.9m 12s primary swell from a Northwest direction (forecast issued at 11:00pm December 10). An open ocean swell of 0.9m 8s is not directed at the surf break, a second open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 1.5ft (0.5m) | 11s |
| Afternoon (11 Dec) | 2.5ft (0.7m) | 13s |
| Evening (11 Dec) | 2.5ft (0.8m) | 12s |
Table - waves today at Mill Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 12 | 11 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 8 | 20 | 32 | 228 | 57 | 82 | 165 | 152 | 177 | 132 | 127 | 155 | 93 | 66 | 59 | 61 | 39 | 37 | 20 | 10 | 9 | 9 | 8 | 2 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 3:16AM 2.01 | 3:10PM 2.31 | 4:19AM 1.92 | 4:11PM 2.18 | 5:22AM 1.90 | 5:16PM 2.08 | ||||||||||||||||||
Low Tide / height (m) | 8:42PM 0.36 | 8:39AM 0.90 | 9:48PM 0.49 | 9:49AM 0.99 | 10:57PM 0.58 | 11:08AM 1.01 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:53 | - | - | - | - | - | - | - | 8:55 | - | - | - | - | - | - | - | 8:56 | - | - | - |
| Sunset | - | - | - | - | - | - | 3:11 | - | - | - | - | - | - | - | 3:11 | - | - | - | - | - | - | - | 3:11 | - |
 |  | |  |  | | |  | | | | | |  | | |  | | | | |  | | | |
Rain (mm) | 1 | 1 | 1 | - | - | - | - | - | - | 1 | 2 | 1 | - | - | - | - | - | - | - | - | - | 1 | 3 | 1 |
| Temp. °C | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 9 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 9 | 10 | 11 |
| Feels °C (?) | -3 | 1 | 1 | 4 | 3 | 3 | 3 | 5 | 6 | 7 | 0 | 6 | 4 | 2 | 1 | 0 | 0 | -2 | -2 | -3 | -4 | -4 | -2 | 0 |
- 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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