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.

Saturday
16th May
11

6

3

2
Sunday
17th May
11

6

1

3
Monday
18th May
13

4

0

3
Tuesday
19th May
14

9

1

3
Wednesday
20th May
15

10

3

5

5-day weather forecast updated at 04:03 on Saturday 16th 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 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 91% chance of some rain and a moderate breeze of 26 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)
91
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
26
kph wind from W

Letterkenny weather for Sunday 17th May 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 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 rain
1
hour of sunshine
3
UV index (Moderate)
86
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
21
kph wind from W

Letterkenny weather for Monday 18th May 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 81% chance of some rain and a moderate breeze of 20 kph from the south-east.

13
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
3
UV index (Moderate)
81
% chance of some rain
<5
mm of rainfall expected
13
°C wind chill
20
kph wind from SE

Letterkenny weather for Tuesday 19th May 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 87% chance of some rain and a moderate breeze of 22 kph from the south.

14
°C maximum temperature
9
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
3
UV index (Moderate)
87
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
22
kph wind from S

Letterkenny weather for Wednesday 20th May 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 25 kph from the west.