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Weather in County Donegal for May 2025

Your guide to County Donegal weather in May - trends and predictions
  • In general, the average temperature in County Donegal at the beginning of May is 13.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 14.4 °C by the end of May.

  • County Donegal experiences an exceptionally high level of rainfall in May, with more than 20 rainy days on average.

  • Is May a good time to visit County Donegal? check out the best time to travel to County Donegal page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
9
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/7°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
84 %
Avg humidity

County Donegal in May average weather

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Temperatures trend during May in County Donegal

See the weather trend as well as the moving average line
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May weather day by day

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Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
14° /4° 0.3 mm 3
2 May Patchy rain possible
Patchy rain possible
16° /5° 0.1 mm 4
3 May Patchy rain possible
Patchy rain possible
14° /7° 0.3 mm 3
4 May Light rain
Light rain
11° /9° 10.5 mm 3
5 May Patchy rain possible
Patchy rain possible
13° /8° 0.4 mm 3
6 May Patchy rain possible
Patchy rain possible
11° /6° 0.2 mm 3
7 May Cloudy
Cloudy
14° /4° 0 mm 3
8 May Light drizzle
Light drizzle
13° /8° 0.8 mm 3
9 May Patchy rain possible
Patchy rain possible
14° /8° 0.3 mm 3
10 May Patchy rain possible
Patchy rain possible
19° /9° 0.2 mm 4
11 May Patchy rain possible
Patchy rain possible
20° /7° 0.4 mm 5
12 May Light rain shower
Light rain shower
16° /9° 5.1 mm 4
13 May Light rain shower
Light rain shower
14° /7° 9 mm 3
14 May Light rain shower
Light rain shower
16° /8° 2.2 mm 4
15 May Light rain shower
Light rain shower
16° /8° 0.8 mm 4
16 May Light rain shower
Light rain shower
19° /7° 2.2 mm 4
17 May Patchy rain possible
Patchy rain possible
18° /9° 0.1 mm 4
18 May Overcast
Overcast
17° /6° 0 mm 4
19 May Patchy rain possible
Patchy rain possible
18° /6° 0 mm 4
20 May Light rain shower
Light rain shower
21° /9° 3.5 mm 5
21 May Light rain shower
Light rain shower
14° /10° 6.9 mm 3
22 May Light rain shower
Light rain shower
14° /8° 4.1 mm 3
23 May Patchy rain possible
Patchy rain possible
11° /6° 0.6 mm 3
24 May Patchy rain possible
Patchy rain possible
10° /6° 0.8 mm 3
25 May Light rain shower
Light rain shower
16° /8° 0.6 mm 4
26 May Light rain shower
Light rain shower
12° /7° 4.9 mm 3
27 May Light rain shower
Light rain shower
15° /6° 1.3 mm 4
28 May Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
15° /8° 8.4 mm 4
29 May Light rain shower
Light rain shower
15° /8° 3.2 mm 4
30 May Light rain shower
Light rain shower
13° /8° 1.9 mm 3
31 May Overcast
Overcast
15° /6° 0 mm 4
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Important Notice
Our weather forecast for County Donegal in May 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.

County Donegal in May - FAQ

What are the expected maximum and minimum temperatures in County Donegal during May?
During May, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in County Donegal during May?
Moderate rainfall is anticipated in County Donegal during May, with a total of 69.3 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in County Donegal during May?
The average wind speed in County Donegal during May is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to County Donegal in May?

As you prepare for your trip to County Donegal in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in County Donegal, during May, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

May rainfall patterns in County Donegal

Explore the daily rainfall trends and prepare for County Donegals May weather 💧

UV exposure in County Donegal during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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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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