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Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 pm Friday 17 Apr 2026 BSTForecast 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
8.8° C
(Which is normal for this time of year)How big are the waves at Downhill today?
The current surf forecast for Downhill at 1AM is: 0.5m 10s primary swell from a West-northwest direction and 0.2m 13s secondary swell from a West-northwest direction (forecast issued at 06:00pm April 17). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 5ft (1.5m) | 9s |
| Afternoon (18 Apr) | 6ft (1.8m) | 10s |
| Evening (18 Apr) | 5ft (1.6m) | 10s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||||||||
| 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 10 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 15 | 13 | 13 | 12 | 12 | 12 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 46 | 70 | 62 | 55 | 101 | 280 | 460 | 573 | 602 | 499 | 432 | 328 | 294 | 231 | 162 | 135 | 117 | 144 | 136 | 146 | 200 | 228 | 174 | 116 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- off | cross | cross- on | cross- on | cross- on | on | on | on | cross- on | cross | cross | cross | cross | cross- on | cross- on | cross | cross | glass | glass | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:06PM 2.16 | 7:23AM 2.39 | 7:43PM 2.22 | 8:03AM 2.32 | 8:22PM 2.22 | 8:45AM 2.17 | ||||||||||||||||||
Low Tide / height (m) | 1:04PM -0.05 | 1:10AM -0.03 | 1:39PM -0.04 | 1:50AM -0.03 | 2:15PM 0.03 | 2:34AM 0.04 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:13 | - | - |
| Sunset | - | 8:34 | - | - | - | - | - | - | - | 8:36 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - |
 |  |  |  |  | |  |  | | | | | | | | | | | | | | | | | |
Rain (mm) | 1 | 1 | - | - | 1 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 11 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 7 | 7 | 7 | 8 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 8 | 10 |
| Feels °C (?) | 5 | 5 | 3 | 3 | 2 | 0 | 0 | 1 | 2 | 3 | 4 | 3 | 3 | 3 | 5 | 6 | 5 | 4 | 5 | 5 | 5 | 4 | 5 | 5 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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