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Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 5 pm Wednesday 10 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
10.8° C
(Which is slightly warmer than usual)How big are the waves at Downhill today?
The current surf forecast for Downhill at 1AM is: 1.8m 14s primary swell from a Northwest direction (forecast issued at 05:00pm December 10). An open ocean swell of 0.4m 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 (11 Dec) | 3.5ft (1.1m) | 13s |
| Afternoon (11 Dec) | 3.5ft (1.0m) | 15s |
| Evening (11 Dec) | 5ft (1.6m) | 17s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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) (?) | 11 | 13 | 13 | 14 | 14 | 13 | 13 | 14 | 15 | 18 | 17 | 17 | 16 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 715 | 1204 | 1109 | 1167 | 976 | 732 | 440 | 467 | 449 | 1307 | 1524 | 1619 | 1847 | 2696 | 4059 | 3578 | 3097 | 2630 | 2570 | 2541 | 2878 | 2297 | 2212 | 1520 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | 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) | 10:22PM 1.44 | 11:08AM 1.86 | 11:33PM 1.34 | 12:20PM 1.75 | 12:58AM 1.33 | |||||||||||||||||||
Low Tide / height (m) | 4:43PM 0.52 | 4:26AM 0.46 | 5:50PM 0.61 | 5:30AM 0.57 | 6:58PM 0.65 | 6:42AM 0.64 | ||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:41 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - |
| Sunset | 3:57 | - | - | - | - | - | - | - | 3:57 | - | - | - | - | - | - | - | 3:56 | - | - | - | - | - | - | - |
 |  | |  | | | |  | | | | |  | |  | |  | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 |
| Temp. °C | 10 | 11 | 11 | 9 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 7 | 6 | 5 | 5 | 7 | 8 | 7 | 7 | 6 | 7 | 9 | 9 | 12 |
| Feels °C (?) | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 3 | 5 | 4 | 4 | 2 | 1 | -1 | -1 | 0 | 1 | 0 | 0 | -1 | -1 | 2 | 4 | 5 |
- 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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