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Surf Forecasts:
Downhill surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 12 am Tuesday 16 Sep 2025 BST
How big are the waves at Downhill today?
The current surf forecast for Downhill at 3AM is: 0.6m 13s primary swell from a West-northwest direction and 0.1m 10s secondary swell from a North direction, 1.2m 6s secondary swell from a Northwest direction (forecast issued at 12:00am September 16). The wind direction is predicted to be onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Sep) | 3.5ft (1.1m) | 6s |
| Afternoon (16 Sep) | 3.5ft (1.1m) | 6s |
| Evening (16 Sep) | 2.5ft (0.7m) | 7s |
Table - waves today at Downhill. (Swell directed towards the surf break)
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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 | 13 | 12 | 6 | 6 | 6 | 7 | 7 | 10 | 10 | 10 | 9 | 9 | 9 | 16 | 15 | 15 | 14 | 13 | 12 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 574 | 240 | 215 | 186 | 186 | 187 | 161 | 110 | 78 | 101 | 64 | 46 | 38 | 27 | 52 | 730 | 1148 | 1088 | 971 | 734 | 545 | 329 | 248 | 156 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | off | off | off | off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 2:36AM 1.38 | 3:21PM 1.65 | 4:10AM 1.48 | 4:33PM 1.85 | 5:03AM 1.62 | 5:22PM 2.03 | ||||||||||||||||||
Low Tide / height (m) | 8:07PM 0.75 | 8:33AM 0.79 | 10:04PM 0.65 | 10:05AM 0.64 | 11:08PM 0.48 | 11:01AM 0.45 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:03 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 7:43 | - | - | - | - | - | - | - | 7:39 | - | - | - | - | - | - | - | 7:37 |
 | |  | |  |  |  | |  | |  | | | | | | | | | |  |  | | | |
Rain (mm) | 1 | 2 | 1 | 1 | 1 | - | - | - | - | 2 | 8 | 2 | - | - | - | - | - | - | - | - | - | 2 | 1 | - |
| Temp. °C | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 14 | 13 | 11 | 12 | 14 | 15 | 15 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 12 | 17 | 18 |
| Feels °C (?) | 7 | 7 | 8 | 8 | 7 | 8 | 10 | 12 | 11 | 7 | 5 | 9 | 10 | 9 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 10 | 15 | 15 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Londonderry
The wind is still cross-on at Downhill (moderate winds from the W at Magilligan Number 2 7 km from Downhill). 2.1m 5s windswell from the NW with a 0.6m 10s swell from the N. 2 swells combining to make bigger set waves.
1 h 31 min ago
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