Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 17°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Friday
19th Jun
17

11

3

3
Saturday
20th Jun
17

9

10

4
Sunday
21st Jun
20

8

7

4
Monday
22nd Jun
23

11

2

5
Tuesday
23rd Jun
18

13

1

4

5-day weather forecast updated at 04:03 on Friday 19th June 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 Friday 19th June 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 43% chance of some rain and a light breeze of 11 kph from the west.

17
°C maximum temperature
11
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
3
UV index (Moderate)
43
% chance of some rain
<10
mm of rainfall expected
17
°C wind chill
11
kph wind from W

Letterkenny weather for Saturday 20th June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.

17
°C maximum temperature
9
°C minimum temperature
broken clouds
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from W

Letterkenny weather for Sunday 21st June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the east.

20
°C maximum temperature
8
°C minimum temperature
broken clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
13
kph wind from E

Letterkenny weather for Monday 22nd June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south.

23
°C maximum temperature
11
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from S

Letterkenny weather for Tuesday 23rd June 2026

Expect overcast skies in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the south-west.