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.

Monday
16th Mar
11

4

1

0
Tuesday
17th Mar
12

6

1

1
Wednesday
18th Mar
11

5

2

2
Thursday
19th Mar
13

5

7

2
Friday
20th Mar
14

3

2

2

5-day weather forecast updated at 04:03 on Monday 16th 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 Monday 16th March 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 11°C and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 93% chance of some rain and a fresh breeze of 32 kph from the south-west.

11
°C maximum temperature
4
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
0
UV index (None)
93
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
32
kph wind from SW

Letterkenny weather for Tuesday 17th March 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 86% chance of some rain and a fresh breeze of 36 kph from the south.

12
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
86
% chance of some rain
<5
mm of rainfall expected
12
°C wind chill
36
kph wind from S

Letterkenny weather for Wednesday 18th March 2026

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

11
°C maximum temperature
5
°C minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
9
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 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-east.

13
°C maximum temperature
5
°C minimum temperature
scattered clouds
7
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
7
kph wind from NE

Letterkenny weather for Friday 20th March 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 14°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.