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:
Lighthouse surfForecast / Sligo / Ireland
48hr Weather and Surf, issued 5 am Friday 12 Dec 2025 ISTForecast update in hr min s Forecast update imminent
Lighthouse surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Lighthouse sea temperature is
10.1° C
(Which is normal for this time of year)How big are the waves at Lighthouse today?
The current surf forecast for Lighthouse at 10AM is: 5.0m 18s primary swell from a West direction (forecast issued at 05:00am December 12). The wind direction is predicted to be cross-shore and the swell rating is 11.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 18ft (5.5m) | 18s |
| Afternoon (12 Dec) | 16ft (5.0m) | 17s |
| Evening (12 Dec) | 15ft (4.5m) | 17s |
Table - waves today at Lighthouse. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 9941 | 15830 | 17213 | 15228 | 13668 | 12081 | 11161 | 11839 | 10440 | 9128 | 6461 | 5686 | 5452 | 5817 | 5817 | 4392 | 3781 | 3555 | 3172 | 3220 | 2570 | 2394 | 2182 | 2223 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross- off | cross | cross |
High Tide / height (m) | 11:30AM 2.96 | 12:21AM 2.38 | 12:34PM 2.82 | 1:28AM 2.45 | 1:37PM 2.74 | |||||||||||||||||||
Low Tide / height (m) | 4:50AM 1.04 | 6:12PM 0.88 | 6:06AM 1.15 | 7:15PM 0.89 | 7:21AM 1.16 | 8:08PM 0.86 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | - | 8:45 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:09 | - | - | - | - | - | - | - | 4:09 | - | - | - | - | - | - | - | 4:09 | - | - | - |
 | |  | |  | | |  | |  |  | |  |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 1 | 2 | 1 | - | 1 | 3 | 4 | 1 | 4 | 1 | 1 |
| Temp. °C | 6 | 6 | 6 | 7 | 9 | 7 | 7 | 7 | 7 | 8 | 9 | 10 | 11 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 12 |
| Feels °C (?) | 0 | 0 | 0 | 1 | 4 | 2 | 2 | 2 | 1 | 1 | -1 | 1 | 2 | 3 | 3 | 6 | 6 | 5 | 6 | 8 | 10 | 7 | 6 | 4 |
- 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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