Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 48°F. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Friday
19th Dec
48

43

2

0
Saturday
20th Dec
48

43

2

0
Sunday
21st Dec
45

37

0

0
Monday
22nd Dec
43

36

1

0
Tuesday
23rd Dec
43

37

0

0

5-day weather forecast updated at 04:04 on Friday 19th December 2025 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 Friday 19th December 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 48°F and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 22% chance of some rain and a fresh breeze of 22 mph from the south-west.

48
°F maximum temperature
43
°F minimum temperature
mostly cloudy with light rain
2
hours of sunshine
0
UV index (None)
22
% chance of some rain
<5
mm of rainfall expected
39
°F wind chill
22
mph wind from SW

Letterkenny weather for Saturday 20th December 2025

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 48°F and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 18 mph from the south-east.

48
°F maximum temperature
43
°F minimum temperature
broken clouds
2
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
41
°F wind chill
18
mph wind from SE

Letterkenny weather for Sunday 21st December 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 45°F and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 50% chance of some rain and a gentle breeze of 10 mph from the east.

45
°F maximum temperature
37
°F minimum temperature
mostly cloudy with light rain
0
hours of sunshine
0
UV index (None)
50
% chance of some rain
<2
mm of rainfall expected
39
°F wind chill
10
mph wind from E

Letterkenny weather for Monday 22nd December 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 43°F and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a gentle breeze of 8 mph from the south.

43
°F maximum temperature
36
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
0
UV index (None)
59
% chance of some rain
<2
mm of rainfall expected
37
°F wind chill
8
mph wind from S

Letterkenny weather for Tuesday 23rd December 2025

Expect fog in low lying areas in Letterkenny, Ireland with a maximum temperature of 43°F and no hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 3 mph from the south.