Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 18°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Saturday
20th Jun
18

9

10

4
Sunday
21st Jun
20

8

9

4
Monday
22nd Jun
23

12

4

6
Tuesday
23rd Jun
22

13

2

3
Wednesday
24th Jun
19

12

3

6

5-day weather forecast updated at 04:03 on Saturday 20th June 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

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 Saturday 20th June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the west.

18
°C maximum temperature
9
°C minimum temperature
broken clouds
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
20
kph wind from W

Letterkenny weather for Sunday 21st June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the east.

20
°C maximum temperature
8
°C minimum temperature
broken clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from E

Letterkenny weather for Monday 22nd June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 23°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

23
°C maximum temperature
12
°C minimum temperature
broken clouds
4
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from SE

Letterkenny weather for Tuesday 23rd June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.

22
°C maximum temperature
13
°C minimum temperature
broken clouds
2
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
17
kph wind from SW

Letterkenny weather for Wednesday 24th June 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.