Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 20°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Tuesday
7th Jul
20

14

1

4
Wednesday
8th Jul
22

13

3

5
Thursday
9th Jul
22

14

7

2
Friday
10th Jul
18

12

1

2
Saturday
11th Jul
17

11

7

6

5-day weather forecast updated at 04:03 on Tuesday 7th July 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 Tuesday 7th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the west.

20
°C maximum temperature
14
°C minimum temperature
broken clouds
1
hour of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
25
kph wind from W

Letterkenny weather for Wednesday 8th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

22
°C maximum temperature
13
°C minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
15
kph wind from SW

Letterkenny weather for Thursday 9th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 22°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-west.

22
°C maximum temperature
14
°C minimum temperature
broken clouds
7
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
22
°C wind chill
18
kph wind from SW

Letterkenny weather for Friday 10th July 2026

Expect isolated thunderstorms in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and a light breeze of 12 kph from the north.

18
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
2
UV index (Low)
16
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
12
kph wind from N

Letterkenny weather for Saturday 11th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 17°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.