Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 11°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Friday
15th May
11

6

5

3
Saturday
16th May
11

6

3

2
Sunday
17th May
11

6

0

2
Monday
18th May
12

5

5

4
Tuesday
19th May
13

9

2

3

5-day weather forecast updated at 04:03 on Friday 15th May 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 15th May 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a gentle breeze of 17 kph from the north.

11
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
3
UV index (Moderate)
12
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
17
kph wind from N

Letterkenny weather for Saturday 16th May 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 86% chance of some rain and a moderate breeze of 21 kph from the west.

11
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
86
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
21
kph wind from W

Letterkenny weather for Sunday 17th May 2026

Expect overcast with light rain in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a gentle breeze of 16 kph from the south-west.

11
°C maximum temperature
6
°C minimum temperature
overcast with light rain
0
hours of sunshine
2
UV index (Low)
86
% chance of some rain
<10
mm of rainfall expected
11
°C wind chill
16
kph wind from SW

Letterkenny weather for Monday 18th May 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 17 kph from the south.

12
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
4
UV index (Moderate)
56
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
17
kph wind from S

Letterkenny weather for Tuesday 19th May 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 84% chance of some rain and a gentle breeze of 13 kph from the west.