Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 5 am Monday 29 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
10.1° C
(Which is slightly warmer than usual)How big are the waves at Downhill today?
The current surf forecast for Downhill at 10AM is: 0.3m 13s primary swell from a West-northwest direction and 0.4m 8s secondary swell from a Northwest direction (forecast issued at 05:00am December 29). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Dec) | 1ft (0.3m) | 13s |
| Afternoon (29 Dec) | 1.5ft (0.4m) | 8s |
| Evening (29 Dec) | 1.5ft (0.4m) | 7s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 29 | Tuesday 30 | Wednesday 31 | Thu 01 | |||||||||||||||||||||
| 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) (?) | 14 | 14 | 13 | 8 | 8 | 8 | 7 | 12 | 12 | 12 | 11 | 11 | 11 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 5 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 52 | 48 | 35 | 17 | 17 | 17 | 15 | 15 | 14 | 14 | 12 | 12 | 12 | 21 | 21 | 19 | 18 | 17 | 17 | 17 | 16 | 25 | 27 | 172 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | off | off | glass | glass | glass | cross | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:09PM 1.76 | 2:00AM 1.53 | 2:27PM 1.80 | 3:10AM 1.69 | 3:35PM 1.89 | |||||||||||||||||||
Low Tide / height (m) | 6:30AM 0.61 | 7:44PM 0.53 | 7:53AM 0.59 | 8:52PM 0.46 | 9:12AM 0.49 | 9:53PM 0.37 | ||||||||||||||||||
Monday 29 | Tuesday 30 | Wednesday 31 | Thu 01 | |||||||||||||||||||||
| Sunrise | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:04 | - | - | - | - | - | - | - | 4:05 | - | - | - | - | - | - | - | 4:06 | - | - | - |
 | |  | | |  |  | | | |  | | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 4 | 4 | 3 | 3 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 3 | 4 | 5 | 6 | 7 |
| Feels °C (?) | 1 | 1 | 0 | 0 | -1 | 0 | 1 | -1 | 0 | 0 | 1 | 1 | 2 | 1 | 0 | 0 | -1 | -2 | -2 | -2 | -2 | -1 | -2 | -1 |
- 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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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Downhill surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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