Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 14°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Friday
21st Aug
14

10

5

2
Saturday
22nd Aug
16

10

5

2
Sunday
23rd Aug
17

9

5

2
Monday
24th Aug
19

8

7

3
Tuesday
25th Aug
19

12

3

3

5-day weather forecast updated at 04:03 on Friday 21st August 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 21st August 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 14°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 21 kph from the north.

14
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
2
UV index (Low)
38
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
21
kph wind from N

Letterkenny weather for Saturday 22nd August 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north-west.

16
°C maximum temperature
10
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from NW

Letterkenny weather for Sunday 23rd August 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 17°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

17
°C maximum temperature
9
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
17
°C wind chill
11
kph wind from SW

Letterkenny weather for Monday 24th August 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-east.

19
°C maximum temperature
8
°C minimum temperature
broken clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from SE

Letterkenny weather for Tuesday 25th August 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 19 kph from the south-east.