County Donegal Climate and Average Weather
Climate of County Donegal: average temperatures, rainfall and seasons month by month.
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).
Recent extremes in County Donegal
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
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 |
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 this means for County Donegal
Today is about average for August. The forecast high of 62°F is in line with the 63°F typical for this month.
A 14% chance means most of the area stays dry; a passing shower is possible but short.
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
- Layers - the daily swing is 54°F, so mornings feel nothing like afternoons
- A packable rain shell - 4 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.
Summary
County Donegal is a county in Ireland. County Donegal is a county in Ireland. It has a population of about 167.000.
Right now it is 55°F (13°C) in County Donegal with overcast. It feels like 55°F. Today runs from 48°F to 62°F. Chance of precipitation is 14%. Sightseeing conditions score 9.2/10 - excellent - go now.
The best time to visit County Donegal is May and July. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 64°F, while January is the coldest with lows near 36°F.
The closest major airport is Dublin Airport (DUB), about 113 mi away. Nearby highlights include Isle of Skye, Lake District National Park, Snowdonia National Park and Edinburgh Castle.
In plain terms. Today is about average for August. The forecast high of 62°F is in line with the 63°F typical for this month. The best window to be outside is roughly 4 PM to 7 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in County Donegal today at 9.9/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about County Donegal
Weather map for County Donegal
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore County Donegal
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 55°F (13°C) with overcast. Humidity is 86% 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 10:07 PM.
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 22, 2026 at 10:07 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
