Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 6°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Monday
19th Jan
6

3

0

0
Tuesday
20th Jan
5

2

2

0
Wednesday
21st Jan
8

4

1

0
Thursday
22nd Jan
6

3

0

0
Friday
23rd Jan
5

2

0

0

5-day weather forecast updated at 04:08 on Saturday 17th January 2026 GMT

More about Letterkenny

Letterkenny by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ireland

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

TUI Black Friday sale: up to €200 off holidays in 2026/2027 with myTUI

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 January 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 6°C and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a gentle breeze of 17 kph from the south.

6
°C maximum temperature
3
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
0
UV index (None)
57
% chance of some rain
<2
mm of rainfall expected
3
°C wind chill
17
kph wind from S

Letterkenny weather for Tuesday 20th January 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 5°C and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a moderate breeze of 28 kph from the south-east.

5
°C maximum temperature
2
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
0
UV index (None)
44
% chance of some rain
<2
mm of rainfall expected
0
°C wind chill
28
kph wind from SE

Letterkenny weather for Wednesday 21st January 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 8°C and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a moderate breeze of 27 kph from the south-east.

8
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
0
UV index (None)
59
% chance of some rain
<5
mm of rainfall expected
4
°C wind chill
27
kph wind from SE

Letterkenny weather for Thursday 22nd January 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 6°C and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 53% chance of some rain and a moderate breeze of 26 kph from the south-east.

6
°C maximum temperature
3
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
0
UV index (None)
53
% chance of some rain
<5
mm of rainfall expected
2
°C wind chill
26
kph wind from SE

Letterkenny weather for Friday 23rd January 2026

Expect cloudy with sleet or snow in Letterkenny, Ireland with a maximum temperature of 5°C and no hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 60% chance of some sleet or snow and a moderate breeze of 23 kph from the south-east.