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Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 5 am Tuesday 16 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 9AM is: 1.6m 15s primary swell from a Northwest direction (forecast issued at 05:00am December 16). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 5ft (1.6m) | 15s |
| Afternoon (16 Dec) | 4.5ft (1.4m) | 14s |
| Evening (16 Dec) | 4.5ft (1.4m) | 14s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 21 | 21 | 21 | 21 | 20 | 19 | 19 | 18 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1361 | 1271 | 1059 | 1031 | 846 | 822 | 765 | 607 | 479 | 357 | 351 | 351 | 261 | 321 | 690 | 5302 | 9043 | 9840 | 9318 | 8030 | 7505 | 6645 | 5023 | 4484 |
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 | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off |
High Tide / height (m) | 4:06PM 1.73 | 4:32AM 1.77 | 4:44PM 1.77 | 5:06AM 1.88 | 5:19PM 1.82 | |||||||||||||||||||
Low Tide / height (m) | 9:55AM 0.58 | 10:19PM 0.48 | 10:40AM 0.51 | 10:55PM 0.43 | 11:20AM 0.45 | 11:30PM 0.38 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | - | 8:47 | - | - | - | - | - | - | - | 8:48 | - | - | - | - | - | - | - | 8:48 | - | - | - | - | - |
| Sunset | - | - | - | - | 3:56 | - | - | - | - | - | - | - | 3:56 | - | - | - | - | - | - | - | 3:57 | - | - | - |
 | |  | | | | |  | |  |  | |  | | | | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 3 | 1 | 1 | - | - | - | - | - | - | - | - | 2 | 2 | - | - |
| Temp. °C | 6 | 6 | 5 | 6 | 6 | 5 | 5 | 5 | 6 | 8 | 9 | 10 | 9 | 8 | 8 | 8 | 7 | 6 | 8 | 9 | 8 | 7 | 6 | 7 |
| Feels °C (?) | 2 | 1 | 0 | 1 | 1 | 0 | 0 | -2 | -4 | -1 | 2 | 6 | 3 | 3 | 2 | -1 | -1 | 0 | -1 | 0 | 1 | 1 | -3 | -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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