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.

Tuesday
17th Mar
11

6

1

0
Wednesday
18th Mar
12

4

0

1
Thursday
19th Mar
13

4

9

2
Friday
20th Mar
15

3

3

2
Saturday
21st Mar
13

2

1

2

5-day weather forecast updated at 04:03 on Tuesday 17th 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 Tuesday 17th March 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 11°C and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 99% chance of some rain and a fresh breeze of 36 kph from the south.

11
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
0
UV index (None)
99
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
36
kph wind from S

Letterkenny weather for Wednesday 18th March 2026

Expect overcast skies in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.

12
°C maximum temperature
4
°C minimum temperature
overcast skies
0
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
12
°C wind chill
8
kph wind from S

Letterkenny weather for Thursday 19th March 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-east.

13
°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
11
kph wind from NE

Letterkenny weather for Friday 20th March 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.

15
°C maximum temperature
3
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
15
°C wind chill
16
kph wind from S

Letterkenny weather for Saturday 21st March 2026

Expect fog in low lying areas in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south.