Donegal weather live forecast

Today's maximum temperature in Donegal is expected to be 13°C. Select a day from the live weather forecast for Donegal, Ireland for more weather parameters.

Monday
18th May
13

5

0

3
Tuesday
19th May
14

9

0

2
Wednesday
20th May
14

10

2

5
Thursday
21st May
16

11

1

3
Friday
22nd May
17

12

0

4

5-day weather forecast updated at 04:00 on Monday 18th May 2026 GMT

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The 5-day weather forecast for Ireland (Donegal) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Donegal weather forecast by day

Below are the detailed weather forecasts for Donegal for the next 5 days.

Donegal weather for Monday 18th May 2026

Expect mostly cloudy with rain in Donegal, Ireland with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 91% chance of some rain and a moderate breeze of 23 kph from the south-east.

13
°C maximum temperature
5
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
3
UV index (Moderate)
91
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
23
kph wind from SE

Donegal weather for Tuesday 19th May 2026

Expect cloudy with some rain in Donegal, Ireland with a maximum temperature of 14°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 96% chance of some rain and a moderate breeze of 24 kph from the south-west.

14
°C maximum temperature
9
°C minimum temperature
cloudy with some rain
0
hours of sunshine
2
UV index (Low)
96
% chance of some rain
<20
mm of rainfall expected
14
°C wind chill
24
kph wind from SW

Donegal weather for Wednesday 20th May 2026

Expect mostly cloudy with light rain in Donegal, Ireland with a maximum temperature of 14°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 65% chance of some rain and a moderate breeze of 25 kph from the west.

14
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
5
UV index (Moderate)
65
% chance of some rain
<2
mm of rainfall expected
14
°C wind chill
25
kph wind from W

Donegal weather for Thursday 21st May 2026

Expect mostly cloudy with rain in Donegal, Ireland with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 19 kph from the south.

16
°C maximum temperature
11
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
3
UV index (Moderate)
72
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
19
kph wind from S

Donegal weather for Friday 22nd May 2026

Expect mostly cloudy with rain in Donegal, Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 16 kph from the south-west.