Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 16°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Thursday
19th Mar
16

4

9

2
Friday
20th Mar
16

4

8

2
Saturday
21st Mar
13

4

4

2
Sunday
22nd Mar
10

3

3

1
Monday
23rd Mar
10

3

1

2

5-day weather forecast updated at 04:03 on Thursday 19th March 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 Thursday 19th March 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

16
°C maximum temperature
4
°C minimum temperature
scattered clouds
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from S

Letterkenny weather for Friday 20th March 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

16
°C maximum temperature
4
°C minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
16
°C wind chill
15
kph wind from SW

Letterkenny weather for Saturday 21st March 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 19 kph from the south-west.

13
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
25
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
19
kph wind from SW

Letterkenny weather for Sunday 22nd March 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 10°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a gentle breeze of 19 kph from the west.

10
°C maximum temperature
3
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
1
UV index (Low)
42
% chance of some rain
<2
mm of rainfall expected
7
°C wind chill
19
kph wind from W

Letterkenny weather for Monday 23rd March 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 10°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 63% chance of some rain and a moderate breeze of 26 kph from the south-west.