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Surf Forecasts:
Rossnowlagh surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 6 pm 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 11PM is: 0.5m 8s primary swell from a West direction and 0.3m 7s secondary swell from a Northwest direction (forecast issued at 06:00pm May 15). The wind direction is predicted to be glassy.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | - | - |
| 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 19mm), heaviest on Sun morning. Very mild (max 12°C on Mon morning, min 7°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
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 | W 11 | W 11 | W 11 | W 11 | |
50 | 20 | 26 | 49 | 41 | 41 | 42 | 92 | 663 | 759 | 1640 | 1951 | 2101 | 2069 | 1701 | 1584 | 1253 | 1062 | 1027 | 894 | 639 | 533 | 457 | 388 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | glassy | glassy | glassy | cross-off | cross | on | on | on | on | on | on | cross-on | cross-on | cross-on | on | on | cross-on | glassy | cross-on | cross | cross-off | cross | |
High Tide | 5:34PM3.43m | 5:46AM3.64m | 6:17PM3.62m | 6:34AM3.67m | 7:01PM3.74m | 7:23AM3.60m | ||||||||||||||||||
Low Tide | 11:33PM0.28m | 11:58AM-0.03m | 00:19AM0.10m | 12:40PM-0.04m | 1:06AM0.02m | |||||||||||||||||||
 | |  | | |  | |  |  | |  | | | | | |  | | |  | | | | | |
 | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:22 | — | — | — |
 | — | 9:30 | — | — | — | — | — | — | — | 9:32 | — | — | — | — | — | — | — | 9:34 | — | — | — | — | — | 9:36 |
— | — | — | — | — | 1 | 1 | 2 | — | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 3 | 1 | — | — | — | — | — | |
Temp °C | 11 | 9 | 8 | 8 | 8 | 8 | 9 | 10 | 11 | 10 | 8 | 8 | 7 | 7 | 9 | 9 | 10 | 9 | 8 | 7 | 7 | 7 | 9 | 12 |
6 | 6 | 7 | 6 | 6 | 6 | 7 | 6 | 5 | 4 | 2 | 2 | 1 | 3 | 4 | 5 | 6 | 6 | 6 | 5 | 5 | 4 | 7 | 9 | |
Swell 1 Height (m) Direction Period (s) | WNW 8 | NW 8 | W 7 | W 8 | W 8 | W 8 | W 8 | W 13 | — | — | — | — | — | — | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 |
 kJ | 50 | 20 | 26 | 49 | 41 | 41 | 42 | 92 | — | — | — | — | — | — | 1701 | 1584 | 1253 | 1062 | 1027 | 894 | 639 | 533 | 457 | 388 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 7 | NW 7 | NW 7 | W 16 | W 15 | WNW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 15 | 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) | — | — | — | — | — | — | SW 2 | W 5 | W 13 | W 12 | W 14 | W 14 | W 13 | W 13 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | 45 | 663 | 759 | 1640 | 1951 | 2101 | 2069 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 279 | 23 | 23 | 9 | 28 | 9 | 8 | 87 | 189 | 383 | 395 | 123 | 123 | 42 | 106 | 73 | 83 | 65 | 53 | 0 | 9 | 8 | 0 | 8 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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