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Surf Forecasts:
Rossnowlagh surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 12 am Thursday 21 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 7AM is: 0.8m 11s primary swell from a West direction and 0.4m 8s secondary swell from a Northwest direction, 0.5m 3s secondary swell from a South direction (forecast issued at 12:00am May 21). The wind direction is predicted to be cross-shore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 2.5ft (0.8m) | 11s |
| Afternoon (21 May) | 2.5ft (0.8m) | 11s |
| Evening (21 May) | 2.5ft (0.7m) | 11s |
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 Thu afternoon. Very mild (max 18°C on Fri morning, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
W 12 | W 11 | W 11 | W 11 | WSW 11 | W 11 | W 11 | W 11 | W 10 | W 11 | W 11 | W 11 | W 10 | W 10 | W 11 | W 11 | W 10 | W 10 | WSW 11 | W 9 | W 10 | W 10 | W 10 | W 9 | |
325 | 206 | 149 | 146 | 153 | 112 | 110 | 110 | 106 | 112 | 85 | 85 | 50 | 49 | 85 | 83 | 74 | 74 | 90 | 41 | 46 | 68 | 65 | 85 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | on | glassy | glassy | cross | cross-off | cross | cross | cross-on | cross-on | cross | |
High Tide | 10:03AM2.93m | 10:28PM3.45m | 11:07AM2.69m | 11:32PM3.30m | 12:18PM2.54m | |||||||||||||||||||
Low Tide | 3:45AM0.37m | 3:47PM0.60m | 4:51AM0.59m | 4:47PM0.82m | 6:06AM0.74m | 5:59PM1.00m | ||||||||||||||||||
 |  |  |  |  | | | |  | | | | | | | |  | |  | | | | | | |
 | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:40 | — | — | — | — | — | — | — | 9:43 | — | — | — | — | — | — | — | 9:44 | — |
— | 3 | 1 | — | — | 2 | 4 | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 13 | 14 | 14 | 17 | 15 | 15 | 15 | 13 | 13 | 13 | 15 | 18 | 17 | 15 | 14 | 13 | 11 | 11 | 13 | 15 | 17 | 17 | 15 |
9 | 10 | 12 | 12 | 15 | 13 | 11 | 10 | 9 | 11 | 11 | 12 | 14 | 14 | 14 | 14 | 13 | 10 | 10 | 11 | 12 | 14 | 15 | 14 | |
Swell 1 Height (m) Direction Period (s) | W 12 | W 11 | W 11 | W 11 | WSW 11 | W 11 | W 11 | W 11 | W 10 | W 11 | W 11 | W 11 | W 10 | W 10 | W 11 | W 11 | W 10 | W 10 | WSW 11 | W 9 | W 10 | W 10 | W 10 | W 9 |
 kJ | 325 | 206 | 149 | 146 | 153 | 112 | 110 | 110 | 106 | 112 | 85 | 85 | 50 | 49 | 85 | 83 | 74 | 74 | 90 | 41 | 46 | 68 | 65 | 85 |
Swell 2 Height (m) Direction Period (s) | — | NW 6 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | WSW 12 | WSW 12 | — | — | — | W 12 | — | W 11 | — | — | — | — |
| kJ | — | 11 | 23 | 22 | 9 | 8 | 8 | 2 | 2 | 2 | 2 | 2 | 46 | 27 | — | — | — | 12 | — | 22 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | N 7 | N 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 3 | S 3 | S 3 | — | S 3 | S 3 | S 3 | S 3 | S 3 | S 3 | S 3 | SSW 3 | SSW 3 | — | — | — | — | — | SSW 3 | SSW 3 | — | — | — |
| kJ | — | 3 | 5 | 5 | — | 1 | 5 | 6 | 8 | 6 | 3 | 3 | 3 | 2 | — | — | — | — | — | 1 | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 65 | 8 | 8 | 21 | 0 | 66 | 81 | 42 | 0 | 8 | 48 | 48 | 73 | 30 | 8 | 9 | 8 | 8 | 9 | 57 | 73 | 28 | 8 |
Best forecast wave conditions in Donegal | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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