County Donegal Weather Forecast
County Donegal weather: 54°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
County Donegal weather in January
Weather map for County Donegal
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Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Climate in County Donegal month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 44° | 36° | 5,4 in | ★★☆☆☆ |
| February | 46° | 39° | 7,0 in | ★★☆☆☆ |
| March | 50° | 39° | 5,3 in | ★★★☆☆ |
| April | 54° | 42° | 5,7 in | ★★★☆☆ |
| May | 60° | 47° | 4,1 in | ★★★★☆ |
| June | 60° | 50° | 7,2 in | ★★★☆☆ |
| July | 64° | 54° | 5,0 in | ★★★★☆ |
| August | 63° | 54° | 6,9 in | ★★★☆☆ |
| September | 60° | 50° | 6,6 in | ★★★☆☆ |
| October | 55° | 48° | 7,1 in | ★★★☆☆ |
| November | 49° | 42° | 6,5 in | ★★☆☆☆ |
| December | 47° | 40° | 8,4 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit County Donegal
Go in May and July. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- A packable rain shell - 5 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
How County Donegal compares with nearby places
Annual averages, and the difference against County Donegal.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Sligo | 30 mi | 50°F | about the same | 66 in |
| County Sligo | 30 mi | 50°F | about the same | 66 in |
| County Leitrim | 37 mi | 49°F | about the same | 62 in |
| County Monaghan | 54 mi | 50°F | about the same | 41 in |
| County Cavan | 55 mi | 50°F | about the same | 43 in |
See the County Donegal forecast by time range
County Donegal weather - more answers
Explore County Donegal
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Frequently asked questions
Where is County Donegal?
County Donegal is a county in Ireland. Its coordinates are 54.6538, -8.1096. It lies in Europe.
What is the weather like in County Donegal right now?
It is currently 54°F (12°C) with overcast. Humidity is 93% and wind is 1 mph.
When is the best time to visit County Donegal?
May and July offer the most comfortable conditions in County Donegal, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is County Donegal in?
County Donegal observes Europe/Dublin (UTC+01:00). The local time is 9:50 AM.
How many people live in County Donegal?
County Donegal has a population of approximately 167.000.
What is the nearest airport to County Donegal?
The closest airports are Dublin Airport (DUB), 113 mi away.
What are the top things to do in County Donegal?
Popular options include Isle of Skye, Lake District National Park, Snowdonia National Park, Edinburgh Castle, Old and New Towns of Edinburgh and Loch Ness.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (ie-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 9:50 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
