- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 am 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
8.7° C
(Which is normal for this time of year)How big are the waves at Downhill today?
The current surf forecast for Downhill at 9AM is: 0.3m 12s primary swell from a West-northwest direction (forecast issued at 12:00am April 17). An open ocean swell of 0.1m 7s is not directed at the surf break, a second open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 1ft (0.3m) | 12s |
| Afternoon (17 Apr) | 1.5ft (0.4m) | 12s |
| Evening (17 Apr) | 1.5ft (0.5m) | 11s |
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 | ||||||||||||||||||||||
| 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 | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 9 | 8 | 9 | 9 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 99 | 55 | 50 | 48 | 27 | 27 | 47 | 109 | 68 | 45 | 71 | 165 | 270 | 405 | 542 | 489 | 390 | 300 | 260 | 197 | 162 | 135 | 135 | 144 |
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 | cross | cross | cross- on | cross- on | on | on | on | on | cross- on | cross | cross | cross | cross | cross- on | cross- on | cross- on |
High Tide / height (m) | 6:45AM 2.38 | 7:06PM 2.16 | 7:23AM 2.39 | 7:43PM 2.22 | 8:03AM 2.32 | |||||||||||||||||||
Low Tide / height (m) | 12:32AM 0.03 | 1:04PM -0.05 | 1:10AM -0.03 | 1:39PM -0.04 | 1:50AM -0.03 | 2:15PM 0.03 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:15 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 8:34 | - | - | - | - | - | - | - | 8:36 | - | - | - | - | - | - | - | 8:37 |
 | |  |  |  |  |  |  |  | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | 1 | 2 | 1 | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 10 | 10 | 11 | 11 | 12 | 11 | 9 | 8 | 8 | 7 | 8 | 9 | 9 | 9 | 8 | 7 | 7 | 7 | 8 | 9 | 9 | 9 |
| Feels °C (?) | 4 | 4 | 3 | 4 | 5 | 4 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 2 | 3 | 4 | 4 | 3 | 3 | 4 | 5 | 6 | 5 | 6 |
- Map Icons:
Break
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.
Nearest