Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 16°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Sunday
5th Jul
16

14

0

2
Monday
6th Jul
17

13

2

3
Tuesday
7th Jul
19

13

2

5
Wednesday
8th Jul
21

12

5

3
Thursday
9th Jul
21

13

2

6

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

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 28 kph from the west.

16
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
2
UV index (Low)
25
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
28
kph wind from W

Letterkenny weather for Monday 6th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a moderate breeze of 26 kph from the west.

17
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
5
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
26
kph wind from W

Letterkenny weather for Tuesday 7th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the west.

19
°C maximum temperature
13
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
28
kph wind from W

Letterkenny weather for Wednesday 8th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

21
°C maximum temperature
12
°C minimum temperature
broken clouds
5
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from SW

Letterkenny weather for Thursday 9th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 21°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a gentle breeze of 14 kph from the south-west.