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Surf Forecasts:
Rossnowlagh surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 6 am Saturday 23 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
12.0° C
(Which is slightly warmer than usual)How big are the waves at Rossnowlagh today?
The current surf forecast for Rossnowlagh at 11AM is: 0.6m 9s primary swell from a West direction and 0.3m 11s secondary swell from a West direction, 0.4m 3s secondary swell from a South-southwest direction (forecast issued at 06:00am May 23). The wind direction is predicted to be cross-onshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 2ft (0.6m) | 10s |
| Afternoon (23 May) | 2.5ft (0.7m) | 10s |
| Evening (23 May) | 3ft (0.9m) | 10s |
Table - waves today at Rossnowlagh. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
WSW 10 | W 11 | W 9 | W 10 | WSW 10 | W 9 | W 10 | W 10 | W 10 | W 10 | WSW 10 | W 10 | W 9 | W 10 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | |
78 | 85 | 42 | 67 | 94 | 113 | 151 | 198 | 200 | 196 | 157 | 113 | 113 | 118 | 682 | 844 | 772 | 760 | 749 | 613 | 584 | 556 | 488 | 565 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | glassy | cross-on | on | cross-on | cross-on | cross | cross-off | |
High Tide | 12:18PM2.54m | 00:41AM3.17m | 1:33PM2.51m | 1:49AM3.10m | 2:42PM2.60m | |||||||||||||||||||
Low Tide | 6:06AM0.74m | 5:59PM1.00m | 7:25AM0.80m | 7:19PM1.07m | 8:33AM0.76m | 8:33PM1.04m | ||||||||||||||||||
 |  | | | | | | | | |  | | | |  | | | | | | | | | | |
 | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | 5:11 |
 | — | — | — | — | — | 9:44 | — | — | — | — | — | — | — | 9:45 | — | — | — | — | — | — | — | 9:46 | — | 9:49 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 11 | 13 | 16 | 17 | 15 | 13 | 13 | 12 | 12 | 14 | 17 | 19 | 18 | 16 | 14 | 13 | 13 | 16 | 18 | 19 | 17 | 16 | 15 |
8 | 9 | 10 | 12 | 12 | 11 | 11 | 11 | 10 | 11 | 12 | 14 | 16 | 16 | 15 | 13 | 11 | 12 | 15 | 16 | 18 | 16 | 15 | 14 | |
Swell 1 Height (m) Direction Period (s) | WSW 10 | W 11 | W 9 | W 10 | WSW 10 | W 9 | W 10 | W 10 | W 10 | W 10 | WSW 10 | W 10 | W 9 | W 10 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 |
 kJ | 78 | 85 | 42 | 67 | 94 | 113 | 151 | 198 | 200 | 196 | 157 | 113 | 113 | 115 | 682 | 844 | 772 | 760 | 749 | 613 | 584 | 556 | 488 | 565 |
Swell 2 Height (m) Direction Period (s) | W 12 | — | W 11 | — | — | — | — | — | — | — | — | W 17 | W 16 | W 15 | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | — | 22 | — | — | — | — | — | — | — | — | 6 | 20 | 118 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 48 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | SSW 3 | SSW 3 | — | — | — | — | — | — | — | SSW 3 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 2 | 3 | 2 | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 8 | 8 | 48 | 48 | 73 | 48 | 8 | 8 | 8 | 0 | 8 | 48 | 73 | 8 | 8 | 0 | 0 | 0 | 8 | 19 | 176 | 23 | 23 | 0 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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