Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 15°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Sunday
26th Jul
15

14

3

4
Monday
27th Jul
18

13

0

4
Tuesday
28th Jul
19

16

2

3
Wednesday
29th Jul
18

13

1

2
Thursday
30th Jul
16

11

7

5

5-day weather forecast updated at 04:03 on Sunday 26th July 2026 GMT

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

Letterkenny weather forecast by day

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

Letterkenny weather for Sunday 26th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 28 kph from the north-west.

15
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
4
UV index (Moderate)
51
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
28
kph wind from NW

Letterkenny weather for Monday 27th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 19 kph from the south-west.

18
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
4
UV index (Moderate)
79
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
19
kph wind from SW

Letterkenny weather for Tuesday 28th July 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 70% chance of some rain and a moderate breeze of 24 kph from the south-west.

19
°C maximum temperature
16
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
3
UV index (Moderate)
70
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
24
kph wind from SW

Letterkenny weather for Wednesday 29th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 67% chance of some rain and a moderate breeze of 20 kph from the south-west.

18
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
2
UV index (Low)
67
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
20
kph wind from SW

Letterkenny weather for Thursday 30th July 2026

Expect sunshine and showers in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 22 kph from the west.