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Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 11 pm Thursday 11 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 3AM is: 1.7m 16s primary swell from a Northwest direction and 0.1m 9s secondary swell from a North direction (forecast issued at 11:00pm December 11). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 7.5ft (2.3m) | 18s |
| 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 | ||||||||||||||||||||||
| 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) (?) | 17 | 17 | 16 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1524 | 1599 | 1523 | 2161 | 3194 | 3539 | 3028 | 2600 | 2212 | 2626 | 2966 | 2756 | 2185 | 1669 | 1480 | 1330 | 1179 | 990 | 721 | 572 | 610 | 590 | 663 | 653 |
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 | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 11:33PM 1.34 | 12:20PM 1.75 | 12:58AM 1.33 | 1:32PM 1.69 | 2:13AM 1.40 | 2:34PM 1.67 | ||||||||||||||||||
Low Tide / height (m) | 5:30AM 0.57 | 6:58PM 0.65 | 6:42AM 0.64 | 8:02PM 0.63 | 7:56AM 0.66 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - |
| Sunset | - | - | - | - | - | - | 3:56 | - | - | - | - | - | - | - | 3:56 | - | - | - | - | - | - | - | 3:56 | - |
 | |  | |  | | | | | |  | |  | | | |  | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | 1 | 1 | 2 | 2 | 3 |
| Temp. °C | 8 | 6 | 6 | 5 | 5 | 6 | 8 | 8 | 7 | 6 | 7 | 7 | 8 | 9 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 12 | 10 |
| Feels °C (?) | 4 | 1 | 1 | 0 | -1 | 0 | 2 | 2 | 2 | 0 | 1 | 0 | -1 | 0 | 1 | 2 | 3 | 6 | 7 | 6 | 8 | 9 | 10 | 9 |
- 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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