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70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 5 pm Friday 12 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Downhill surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Downhill sea temperature is
10.9° C
(Which is slightly warmer than usual)How big are the waves at Downhill today?
The current surf forecast for Downhill at 9PM is: 1.9m 17s primary swell from a Northwest direction (forecast issued at 05:00pm December 12). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | 7ft (2.2m) | 18s |
| Evening (12 Dec) | 6ft (1.9m) | 17s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3028 | 2600 | 2212 | 2454 | 2966 | 2756 | 2157 | 1647 | 1604 | 1581 | 1267 | 1005 | 732 | 572 | 529 | 521 | 581 | 525 | 642 | 701 | 690 | 722 | 804 | 940 |
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- off | cross- off | cross- off | cross- off | cross- off | on | on | cross- on | cross- off | cross- off | cross- off |
High Tide / height (m) | 12:20PM 1.75 | 12:58AM 1.33 | 1:32PM 1.69 | 2:13AM 1.40 | 2:34PM 1.67 | 3:10AM 1.52 | ||||||||||||||||||
Low Tide / height (m) | 6:58PM 0.65 | 6:42AM 0.64 | 8:02PM 0.63 | 7:56AM 0.66 | 8:55PM 0.59 | 9:02AM 0.63 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:45 | - |
| Sunset | 3:56 | - | - | - | - | - | - | - | 3:56 | - | - | - | - | - | - | - | 3:56 | - | - | - | - | - | - | - |
 |  | | | |  |  | | |  | | |  | |  | |  |  | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 | - | 2 | 1 | 3 | 6 | - | - | - | - |
| Temp. °C | 8 | 8 | 7 | 6 | 7 | 6 | 7 | 8 | 10 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 9 | 7 | 7 | 7 | 7 | 8 |
| Feels °C (?) | 1 | 1 | 1 | 0 | 1 | -1 | -2 | -2 | 0 | 1 | 3 | 6 | 6 | 6 | 7 | 8 | 8 | 6 | 3 | 2 | 2 | 3 | 3 | 4 |
- 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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