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:
The Harbour surfForecast / Scot – East Coast / UK
48hr Weather and Surf, issued 11 pm Monday 15 Dec 2025 GMTForecast update in hr min s Forecast update imminent
The Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Harbour sea temperature is
9.8° C
(Which is slightly warmer than usual)How big are the waves at The Harbour today?
The current surf forecast for The Harbour at 6AM is: 0.9m 7s primary swell from a South-southeast direction (forecast issued at 11:00pm December 15). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 3ft (0.9m) | 7s |
| Afternoon (16 Dec) | 3ft (0.9m) | 7s |
| Evening (16 Dec) | 2ft (0.6m) | 7s |
Table - waves today at The Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 6 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 143 | 119 | 98 | 96 | 96 | 79 | 81 | 47 | 35 | 25 | 15 | 0 | 295 | 474 | 474 | 687 | 764 | 589 | 521 | 403 | 402 | 311 | 265 | 247 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off |
High Tide / height (m) | 10:28PM 3.68 | 11:01AM 3.67 | 11:17PM 3.73 | 11:42AM 3.79 | 12:01AM 3.80 | 12:18PM 3.92 | ||||||||||||||||||
Low Tide / height (m) | 4:38AM 1.51 | 4:59PM 1.70 | 5:20AM 1.48 | 5:43PM 1.56 | 5:58AM 1.45 | |||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:41 | - | - | - | - | - | - | - | 8:41 | - | - | - | - | - | - | - | 8:42 | - | - | - |
| Sunset | - | - | - | - | - | - | 3:25 | - | - | - | - | - | - | - | 3:25 | - | - | - | - | - | - | - | 3:25 | - |
 |  | | |  |  |  | | |  | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | 1 | - | - | - | - | - |
| Temp. °C | 8 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 5 | 4 | 5 | 7 | 7 | 8 | 10 | 9 | 9 | 9 | 8 | 8 | 7 | 8 |
| Feels °C (?) | 5 | 5 | 4 | 3 | 2 | 3 | 3 | 2 | 2 | 0 | -1 | -2 | -2 | -2 | -4 | -2 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 2 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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