Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 25°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Tuesday
14th Jul
25

11

14

6
Wednesday
15th Jul
27

13

12

6
Thursday
16th Jul
27

15

16

6
Friday
17th Jul
20

13

4

4
Saturday
18th Jul
18

12

4

6

5-day weather forecast updated at 04:03 on Tuesday 14th 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 Tuesday 14th July 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 25°C, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the east.

25
°C maximum temperature
11
°C minimum temperature
scattered clouds
14
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from E

Letterkenny weather for Wednesday 15th July 2026

Expect scattered clouds in Letterkenny, Ireland with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-east.

27
°C maximum temperature
13
°C minimum temperature
scattered clouds
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
14
kph wind from SE

Letterkenny weather for Thursday 16th July 2026

Expect clear skies in Letterkenny, Ireland with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 16 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

27
°C maximum temperature
15
°C minimum temperature
clear skies
16
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
15
kph wind from N

Letterkenny weather for Friday 17th July 2026

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

20
°C maximum temperature
13
°C minimum temperature
broken clouds
4
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from N

Letterkenny weather for Saturday 18th July 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north.