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.

Wednesday
22nd Jul
18

12

3

3
Thursday
23rd Jul
18

12

4

2
Friday
24th Jul
18

12

3

4
Saturday
25th Jul
16

13

0

2
Sunday
26th Jul
15

13

3

4

5-day weather forecast updated at 04:03 on Wednesday 22nd 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 Wednesday 22nd July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north.

18
°C maximum temperature
12
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from N

Letterkenny weather for Thursday 23rd July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the west.

18
°C maximum temperature
12
°C minimum temperature
broken clouds
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from W

Letterkenny weather for Friday 24th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the west.

18
°C maximum temperature
12
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
26
kph wind from W

Letterkenny weather for Saturday 25th July 2026

Expect overcast 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 2-5 mm of rainfall expected with 65% chance of some rain and a moderate breeze of 20 kph from the west.

16
°C maximum temperature
13
°C minimum temperature
overcast with light rain
0
hours of sunshine
2
UV index (Low)
65
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
20
kph wind from W

Letterkenny weather for Sunday 26th July 2026

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 67% chance of some rain and a moderate breeze of 27 kph from the north-west.