Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 23°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Wednesday
24th Jun
23

13

5

4
Thursday
25th Jun
28

14

6

6
Friday
26th Jun
21

15

1

4
Saturday
27th Jun
19

13

1

4
Sunday
28th Jun
16

11

8

6

5-day weather forecast updated at 04:03 on Wednesday 24th 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 Wednesday 24th June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

23
°C maximum temperature
13
°C minimum temperature
broken clouds
5
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
23
°C wind chill
14
kph wind from N

Letterkenny weather for Thursday 25th June 2026

Expect isolated thunderstorms in Letterkenny, Ireland with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a gentle breeze of 19 kph from the north-east.

28
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
51
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
19
kph wind from NE

Letterkenny weather for Friday 26th June 2026

Expect isolated thunderstorms in Letterkenny, Ireland with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 17 kph from the north.

21
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
68
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
17
kph wind from N

Letterkenny weather for Saturday 27th June 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 26 kph from the south.

19
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
4
UV index (Moderate)
72
% chance of some rain
<5
mm of rainfall expected
19
°C wind chill
26
kph wind from S

Letterkenny weather for Sunday 28th June 2026

Expect sunshine and showers in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a fresh breeze of 32 kph from the south-west.