Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 22°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Monday
25th May
22

10

9

UV6
Tuesday
26th May
19

10

10

UV6
Wednesday
27th May
24

9

14

UV6
Thursday
28th May
22

12

5

UV5
Friday
29th May
20

11

5

UV4

5-day weather forecast updated at 04:03 on Sunday 24th May 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 Monday 25th May 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 22°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.

22
°C maximum temperature
10
°C minimum temperature
broken clouds
9
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Letterkenny weather for Tuesday 26th May 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north-east.

19
°C maximum temperature
10
°C minimum temperature
broken clouds
10
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from NE

Letterkenny weather for Wednesday 27th May 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 24°C, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-east.

24
°C maximum temperature
9
°C minimum temperature
scattered clouds
14
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from SE

Letterkenny weather for Thursday 28th May 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

22
°C maximum temperature
12
°C minimum temperature
broken clouds
5
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from W

Letterkenny weather for Friday 29th May 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.