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Surf Forecasts:
Rossnowlagh surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 6 am Friday 15 May 2026 ISTForecast update in hr min s Forecast update imminent
Rossnowlagh surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rossnowlagh sea temperature is
11.4° C
(Which is normal for this time of year)How big are the waves at Rossnowlagh today?
The current surf forecast for Rossnowlagh at 12PM is: 0.8m 8s primary swell from a West-northwest direction and 0.2m 9s secondary swell from a West direction (forecast issued at 06:00am May 15). The wind direction is predicted to be cross-onshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 3ft (0.9m) | 8s |
| Afternoon (15 May) | 2.5ft (0.7m) | 8s |
| Evening (15 May) | 1.5ft (0.5m) | 7s |
Table - waves today at Rossnowlagh. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 13mm), heaviest on Sun afternoon. Very mild (max 11°C on Fri afternoon, min 7°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 10 PM | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NW 8 | NW 8 | NW 8 | NW 8 | WNW 8 | NW 8 | W 7 | W 8 | W 8 | W 8 | W 8 | W 13 | W 13 | W 12 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | |
129 | 109 | 93 | 60 | 50 | 20 | 26 | 49 | 41 | 55 | 72 | 440 | 573 | 668 | 1335 | 1656 | 1634 | 1739 | 1676 | 1568 | 1363 | 1062 | 909 | 786 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | cross-on | cross-on | cross-on | glassy | glassy | cross-off | cross | cross-on | cross-on | on | on | on | on | on | cross | cross-on | cross-on | on | on | cross-on | on | |
High Tide | 4:59AM3.52m | 5:34PM3.43m | 5:46AM3.64m | 6:17PM3.62m | 6:34AM3.67m | 7:01PM3.74m | ||||||||||||||||||
Low Tide | 11:17AM0.08m | 11:33PM0.28m | 11:58AM-0.03m | 00:19AM0.10m | 12:40PM-0.04m | |||||||||||||||||||
 |  | |  | | | | | | | |  | |  |  |  | | | | | |  | |  | |
 | 5:28 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | 5:22 |
 | — | — | — | — | — | 9:30 | — | — | — | — | — | — | — | 9:32 | — | — | — | — | — | — | — | 9:34 | — | 9:36 |
— | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | 1 | — | 2 | 2 | 1 | 4 | 1 | — | — | |
Temp °C | 8 | 8 | 10 | 10 | 11 | 10 | 9 | 8 | 8 | 8 | 10 | 9 | 11 | 10 | 8 | 8 | 7 | 7 | 8 | 9 | 8 | 9 | 7 | 7 |
3 | 4 | 5 | 5 | 6 | 6 | 7 | 6 | 6 | 6 | 8 | 5 | 5 | 4 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 4 | 4 | |
Swell 1 Height (m) Direction Period (s) | W 9 | W 10 | W 9 | W 9 | WNW 8 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | — | — | — | — | — | — | W 13 | W 13 | W 13 | — | W 12 | W 12 | W 12 |
 kJ | 2 | 2 | 2 | 6 | 50 | 15 | 26 | 49 | 41 | 55 | 72 | — | — | — | — | — | — | 1739 | 1676 | 1568 | — | 1062 | 909 | 786 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 9 | NW 8 | NW 7 | NW 7 | W 16 | W 15 | WNW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 6 | 20 | 8 | 8 | 5 | 17 | 41 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 9 | W 9 | W 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 6 | 14 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 8 | NW 8 | NW 8 | — | — | — | — | — | — | — | W 13 | W 13 | W 12 | W 14 | W 14 | W 13 | — | — | — | W 12 | — | — | — |
| kJ | 129 | 109 | 93 | 60 | — | — | — | — | — | — | — | 440 | 573 | 668 | 1335 | 1656 | 1634 | — | — | — | 1363 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 197 | 197 | 312 | 279 | 225 | 64 | 23 | 9 | 28 | 9 | 8 | 78 | 189 | 383 | 383 | 414 | 123 | 106 | 107 | 83 | 48 | 101 | 73 | 48 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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