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.

Tuesday
30th Jun
18

12

2

3
Wednesday
1st Jul
15

12

0

2
Thursday
2nd Jul
16

11

5

3
Friday
3rd Jul
19

11

2

2
Saturday
4th Jul
17

13

1

3

5-day weather forecast updated at 04:03 on Tuesday 30th June 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 Tuesday 30th June 2026

Expect isolated thunderstorms in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 18 kph from the north-west.

18
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
3
UV index (Moderate)
72
% chance of some rain
<10
mm of rainfall expected
18
°C wind chill
18
kph wind from NW

Letterkenny weather for Wednesday 1st July 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 84% chance of some rain and a fresh breeze of 30 kph from the south-west.

15
°C maximum temperature
12
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
2
UV index (Low)
84
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
30
kph wind from SW

Letterkenny weather for Thursday 2nd July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a moderate breeze of 25 kph from the west.

16
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
3
UV index (Moderate)
10
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
25
kph wind from W

Letterkenny weather for Friday 3rd July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the south-west.

19
°C maximum temperature
11
°C minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
19
°C wind chill
25
kph wind from SW

Letterkenny weather for Saturday 4th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 53% chance of some rain and a gentle breeze of 19 kph from the west.