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Donegal Weather in October
October in Donegal typically sees daytime highs of 14°C (57°F) and nighttime lows of 7°C (45°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Donegal in October
You can typically expect 23 days of rain this month, averaging around 122 mm (4.8 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Donegal in October
In October, Donegal gets moderate temperatures, with highs of 14°C (57°F). Nights cool to around 7°C (45°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Donegal in October
You can expect a moderate amount of sunlight, with approximately 103 hours. This means a pleasant mix of sun and overcast.For Donegal itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Donegal Temperature in October
Min Temperature
7°C (45°F)
Max Temperature
14°C (57°F)
Chance of Rain
78%
Precipitation
122 mm (4.8 in)
Rainy days
23 days
Sunshine
103 hours *
Percentage Sunshine
*
* Data from: Derry, Ireland (63 KM, 39 Miles).
Donegal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Donegal - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Donegal typically stay consistent throughout October, with daily highs averaging around 14°C (57°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in October
Historical weather records for Donegal in October
Browse day-by-day weather records for Donegal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Donegal historical weather extremes in October
According to our 49 years of weather records for Donegal, the following extremes were recorded between 1976 and 2025.
- On October 10, 2018, temperatures climbed to 20°C (68°F), marking the warmest October day on record.
- On October 28, 2008, Donegal saw its coldest October day with temperatures maxing out at 5°C (41°F).
- Donegal registered its coldest October night on October 30, 1992, with temperatures dropping to -4°C (25°F).
Best Places in Ireland in October
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Donegal in October
Pack for changing conditions in Donegal in October. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Donegal in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10 -
Outdoor sports9/10
Donegal 3-Day Forecast
More climate data for Donegal
See the full Donegal climate overview or explore weather in Ireland.
Popular in October
Where to go in October - average daytime high across popular destinations.
Westport
14°C (57°F) Doolin15°C (59°F) Kilkenny
14°C (57°F) Cork
15°C (59°F) Kenmare14°C (57°F) Killarney14°C (57°F) Galway15°C (59°F) Dublin15°C (59°F) Bucket list
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