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.

Sunday
18th Oct
12

1

9

2
Monday
19th Oct
12

1

5

1
Tuesday
20th Oct
12

6

4

1
Wednesday
21st Oct
9

6

2

1
Thursday
22nd Oct
11

6

4

1

5-day weather forecast updated at 04:02 on Sunday 18th 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 Sunday 18th October 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 2 (Low) and 9 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
1
°C minimum temperature
scattered clouds
9
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
12
°C wind chill
10
kph wind from S

Letterkenny weather for Monday 19th October 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.

12
°C maximum temperature
1
°C minimum temperature
broken clouds
5
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from S

Letterkenny weather for Tuesday 20th October 2026

Expect sunshine and showers in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 60% chance of some rain and a moderate breeze of 26 kph from the south-east.

12
°C maximum temperature
6
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
60
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
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 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 62% chance of some rain and a moderate breeze of 26 kph from the north-west.

9
°C maximum temperature
6
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
1
UV index (Low)
62
% chance of some rain
<10
mm of rainfall expected
6
°C wind chill
26
kph wind from NW

Letterkenny weather for Thursday 22nd October 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 17 kph from the south-west.