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County Donegal (Donegal)
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Ireland weather

Weather in County Donegal for December 2025

Your guide to County Donegal weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Yellow Rain Warning - See hour by hour.

    • Snow Forecast ❄️

  • Snowfall in County Donegal during December is quite rare, with fewer than 2 snowy days on average.
    According to County Donegal snow forecast for December 2025, no snow is expected in the next 2 weeks.

    • Temperatures

  • Until now, December 2025 in County Donegal has been nearly identical to the historical average, with a temperature of 8.5 °C (showing only a slight deviation of 0.5 °C).

  • The forecast for the upcoming days in County Donegal predicts a temperature of 8.9 °C, which is slightly above the historical average.

  • In general, the average temperature in County Donegal at the beginning of December is 7.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 8.6 °C by the end of December.

    • Rain 🌧️

  • County Donegal experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 178.3 mm.

Average dry days
4
Dry days
Average rainy days
26
Rainy days
Average snowy days
1
Snow days
Average temperatures
8°/4°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
85 %
Avg humidity

County Donegal Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light freezing rain
9°
2
Mist
5°
3
Overcast
6°
4
Light snow
7°
5
Overcast
7°
6
Moderate rain
9°
7
Light rain shower
10°
8
Patchy rain possible
9°
9
Light rain shower
10°
10
Light rain shower
8°
11
Moderate rain
7°
12
Light drizzle
5°
13
Weather Alert Moderate rain
11°
14
Weather Alert Moderate rain
12°
15
Weather Alert Patchy rain possible
8°
16
Patchy rain possible
6°
17
Moderate rain
10°
18
Patchy rain possible
10°
19
Patchy rain possible
7°
20
Moderate rain
8°
21
Patchy rain possible
10°
22
Patchy rain possible
13°
23
Patchy rain possible
7°
24
Patchy rain possible
7°
25
Patchy rain possible
8°
26
Patchy rain possible
8°
27
Light rain shower
11°
28
Light rain shower
8°
29
Light rain shower
8°
30
Moderate or heavy sleet
9°
31
Moderate or heavy rain with thunder
8°

Temperatures trend during December in County Donegal

See the weather trend as well as the moving average line

December weather in County Donegal day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Light freezing rain
Light freezing rain
 9° /3° 2.3 mm 2
2 Dec. Mist
Mist
 5° /1° 1.8 mm 2
3 Dec. Overcast
Overcast
 6° /1° 4.1 mm 2
4 Dec. Light snow
Light snow
 7° /1° 3.4 mm 2
5 Dec. Overcast
Overcast
 7° /1° 7.9 mm 2
6 Dec. Moderate rain
Moderate rain
 9° /3° 16.3 mm 2
7 Dec. Light rain shower
Light rain shower
 10° /5° 18.8 mm 2
8 Dec. Patchy rain possible
Patchy rain possible
 9° /4° 6.2 mm 2
9 Dec. Light rain shower
Light rain shower
 10° /4° 8 mm 2
10 Dec. Light rain shower
Light rain shower
 8° /3° 4.6 mm 2
11 Dec. Moderate rain
Moderate rain
 7° /3° 5.1 mm 2
12 Dec. Light drizzle
Light drizzle
 5° /2° 3.1 mm 2
13 Dec. Moderate rain
Moderate rain
 11° /4° 7.8 mm 0
14 Dec. Moderate rain
Moderate rain
 12° /11° 14.1 mm 0
15 Dec. Patchy rain possible
Patchy rain possible
 8° /3° 1.3 mm 0.1
16 Dec. Patchy rain possible
Patchy rain possible
 6° /2° 1.1 mm 0.1
17 Dec. Moderate rain
Moderate rain
 10° /5° 6.8 mm 0
18 Dec. Patchy rain possible
Patchy rain possible
 10° /5° 4.8 mm 2
19 Dec. Patchy rain possible
Patchy rain possible
 7° /6° 2.6 mm 2
20 Dec. Moderate rain
Moderate rain
 8° /7° 8.3 mm 2
21 Dec. Patchy rain possible
Patchy rain possible
 10° /7° 3 mm 2
22 Dec. Patchy rain possible
Patchy rain possible
 13° /6° 1.6 mm 2
23 Dec. Patchy rain possible
Patchy rain possible
 7° /3° 1 mm 2
24 Dec. Patchy rain possible
Patchy rain possible
 7° /1° 0.9 mm 1
25 Dec. Patchy rain possible
Patchy rain possible
 8° /2° 4.2 mm 2
26 Dec. Patchy rain possible
Patchy rain possible
 8° /1° 1.7 mm 1
27 Dec. Light rain shower
Light rain shower
 11° /6° 12.3 mm 3
28 Dec. Light rain shower
Light rain shower
 8° /5° 7.5 mm 2
29 Dec. Light rain shower
Light rain shower
 8° /3° 2.7 mm 2
30 Dec. Moderate or heavy sleet
Moderate or heavy sleet
 9° /5° 8.8 mm 3
31 Dec. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 8° /4° 10.9 mm 3
Next
Important Notice
Our weather forecast for County Donegal in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the County Donegal forecast closer to your planned date for the most up-to-date weather information.
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County Donegal in December - FAQ

What are the expected maximum and minimum temperatures in County Donegal during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 4°.
How much rainfall should be expected in County Donegal during December?
Significant rainfall exceeding 178.3 mm is expected in County Donegal during December, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
Will it snow in County Donegal in December 2025?
County Donegal typically sees 0.22 cm of snowfall during December.
What are the typical wind conditions in County Donegal during December?
The average wind speed in County Donegal during December is 27 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in County Donegal

Explore the daily rainfall trends and prepare for County Donegals December weather 💧
Typically, County Donegal has 26 rainy days in December with a total of 178.3 mm of rainfall.
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Location coordinates Where is County Donegal?

Get accurate weather forecasts for County Donegal, located at latitude 54.654 and longitude -8.111. Stay updated with localized weather information tailored for County Donegal.

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