Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 12°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Monday
19th Oct
12

0

5

2
Tuesday
20th Oct
13

6

4

1
Wednesday
21st Oct
9

5

1

1
Thursday
22nd Oct
10

5

5

1
Friday
23rd Oct
8

5

3

1

5-day weather forecast updated at 04:03 on Monday 19th October 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 19th October 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south.

12
°C maximum temperature
0
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from S

Letterkenny weather for Tuesday 20th October 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a moderate breeze of 26 kph from the south-east.

13
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
1
UV index (Low)
39
% chance of some rain
<2
mm of rainfall expected
13
°C wind chill
26
kph wind from SE

Letterkenny weather for Wednesday 21st October 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 9°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a strong breeze of 40 kph from the north-west.

9
°C maximum temperature
5
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
1
UV index (Low)
74
% chance of some rain
<10
mm of rainfall expected
4
°C wind chill
40
kph wind from NW

Letterkenny weather for Thursday 22nd October 2026

Expect sunshine and showers in Letterkenny, Ireland with a maximum temperature of 10°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 67% chance of some rain and a moderate breeze of 24 kph from the south-west.

10
°C maximum temperature
5
°C minimum temperature
sunshine and showers
5
hours of sunshine
1
UV index (Low)
67
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
24
kph wind from SW

Letterkenny weather for Friday 23rd October 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 8°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a moderate breeze of 28 kph from the north-west.