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Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 pm Sunday 17 May 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
10.7° C
(Which is normal for this time of year)How big are the waves at Downhill today?
The current surf forecast for Downhill at 3PM is: 1.2m 13s primary swell from a Northwest direction (forecast issued at 12:00pm May 17). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 4.5ft (1.3m) | 13s |
| Afternoon (17 May) | 4ft (1.2m) | 13s |
| Evening (17 May) | 3.5ft (1.1m) | 13s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Very mild (max 13°C on Tue afternoon, min 6°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the SE by Mon night). | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | 10 PM | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 13 | WNW 13 | NW 13 | WNW 13 | NW 12 | WNW 12 | WNW 12 | WNW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | WNW 10 | NW 10 | WNW 10 | NW 10 | NW 9 | WNW 9 | WNW 9 | WNW 13 | WNW 16 | WNW 15 | WNW 14 | |
634 | 581 | 494 | 437 | 353 | 247 | 243 | 231 | 176 | 172 | 169 | 112 | 104 | 67 | 48 | 38 | 23 | 22 | 8 | 8 | 17 | 49 | 131 | 165 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | glassy | glassy | cross-on | cross | cross | glassy | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | |
High Tide | 7:04AM2.27m | 7:27PM2.24m | 7:50AM2.19m | 8:12PM2.27m | 8:37AM2.06m | 9:00PM2.23m | ||||||||||||||||||
Low Tide | 1:17PM0.05m | 1:40AM0.04m | 1:59PM0.09m | 2:31AM0.09m | 2:44PM0.17m | 3:27AM0.19m | ||||||||||||||||||
 |  | | |  |  | |  |  | | | |  | | | | | | | | |  | | | |
 | 5:16 | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — |
 | — | — | — | 9:31 | — | — | — | — | — | — | — | 9:34 | — | — | — | — | — | — | — | 9:35 | — | — | — | 9:37 |
— | 1 | 1 | 2 | 1 | — | — | — | — | — | — | — | — | 1 | 4 | 3 | 1 | 1 | 1 | 2 | 2 | — | — | — | |
Temp °C | 10 | 9 | 9 | 8 | 8 | 7 | 6 | 7 | 9 | 10 | 12 | 12 | 9 | 9 | 10 | 10 | 11 | 12 | 12 | 13 | 11 | 11 | 11 | 11 |
5 | 5 | 7 | 6 | 7 | 4 | 3 | 4 | 8 | 7 | 7 | 8 | 3 | 3 | 3 | 4 | 8 | 9 | 9 | 10 | 7 | 6 | 6 | 7 | |
Swell 1 Height (m) Direction Period (s) | WNW 13 | WNW 13 | NW 13 | WNW 13 | NW 12 | WNW 12 | WNW 12 | WNW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | WNW 10 | NW 10 | WNW 10 | ESE 5 | E 5 | ESE 4 | E 4 | WNW 9 | WNW 16 | WNW 15 | WNW 14 |
 kJ | 634 | 581 | 494 | 437 | 353 | 247 | 243 | 231 | 176 | 172 | 169 | 112 | 104 | 67 | 48 | 38 | 51 | 17 | 5 | 2 | 8 | 49 | 131 | 165 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 15 | NW 10 | NW 9 | WNW 9 | WNW 9 | E 3 | WNW 12 | WNW 10 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 23 | 22 | 8 | 8 | 1 | 15 | 20 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 15 | W 14 | NW 13 | NW 13 | WNW 13 | NW 9 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 4 | 7 | 7 | 17 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | ESE 2 | ESE 3 | ESE 4 | ESE 5 | ESE 5 | — | — | — | — | — | — | — | SSW 2 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 13 | 54 | 97 | — | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 13 | 13 | 13 | 13 | 4 | 37 | 6 | 13 | 13 | 13 | 0 | 0 | 0 | 0 | 0 | 20 | 120 | 105 | 53 | 37 | 24 | 39 | 37 | 17 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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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