Donegal weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Poor
Best time to visit: April – June
What is the weather like in Donegal in March?
In March, Donegal is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sea averages 8.4 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. It rains often – on about 17 days, adding up to 90 mm. All in all, March is not an ideal month for a holiday in Donegal.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 2 | 3 | 10 |
| Day | 8° | 9° | 12° |
| Night | 3° | 4° | 5° |
| Sea | 8° | 8° | 9° |
| Sun | 2 h | 3 h | 5 h |
| Rain days | 17 | 17 | 16 |
More details for March
- Daylight
- 11 h 44 min06:50 – 18:34
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 77 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snow
- Time zone
- UTC+0Europe/Dublin
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %3 %
- Few rainy daysweight 20 %10 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in March
- Warm jacket
- Rain jacket or umbrella
Donegal in March: quick answers
Is Donegal hot in March?
No. In March, Donegal is cold: daytime highs average 9 °C and nights drop to about 4 °C.
Can you swim in Donegal in March?
Only if you don't mind cold water: in March the sea averages just 8.4 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Donegal in March?
It rains often – on about 17 days, adding up to 90 mm.
Donegal month by month
The whole year in DonegalAll destinations: IrelandWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences