County Donegal Weather Forecast
County Donegal weather: 54°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for County Donegal
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sun, Aug 23 | ☁️ Overcast | 64° / 53° | 43% | 7 mph | 3 |
| Mon, Aug 24 | ☁️ Overcast | 70° / 51° | 8% | 8 mph | 4 |
| Tue, Aug 25 | 🌧️ Heavy drizzle | 61° / 57° | 39% · 0,3 in | 10 mph | 5 |
| Wed, Aug 26 | 🌧️ Heavy drizzle | 67° / 59° | 77% · 0,3 in | 9 mph | 4 |
| Thu, Aug 27 | 🌦️ Light rain | 68° / 61° | 86% · 0,3 in | 11 mph | 2 |
| Fri, Aug 28 | 🌦️ Light rain | 62° / 59° | 76% · 0,3 in | 11 mph | 3 |
| Sat, Aug 29 | 🌦️ Light drizzle | 63° / 58° | 60% · 0,1 in | 14 mph | 2 |
| Sun, Aug 30 | ☁️ Overcast | 63° / 55° | 73% | 10 mph | 3 |
| Mon, Aug 31 | ☁️ Overcast | 62° / 52° | 60% | 7 mph | 2 |
| Tue, Sep 1 | 🌥️ Fog | 61° / 46° | 57% | 7 mph | 4 |
| Wed, Sep 2 | 🌦️ Light drizzle | 60° / 49° | 67% · 0,0 in | 8 mph | 5 |
| Thu, Sep 3 | 🌦️ Drizzle | 61° / 51° | 66% · 0,2 in | 18 mph | 1 |
| Fri, Sep 4 | 🌦️ Light showers | 62° / 56° | 65% · 0,6 in | 24 mph | 2 |
| Sat, Sep 5 | 🌦️ Light drizzle | 62° / 54° | 70% · 0,2 in | 16 mph | 2 |
The two-week trend
Cooling. The second half of the window averages 36°F cooler than the days immediately ahead.
The window averages 63°F against a August normal of 63°F - right on average.
Rainfall over the next 7 days is close to normal for August (1,3 in against a typical 1,6 in).
What this means for County Donegal
Today is about average for August. The forecast high of 64°F is in line with the 63°F typical for this month.
A 43% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 51°F.
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.
See the County Donegal forecast by time range
County Donegal weather - more answers
Explore County Donegal
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
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 9:38 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 9:38 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
