Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 15°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

Tuesday
13th Oct
15

8

4

1
Wednesday
14th Oct
16

8

1

1
Thursday
15th Oct
13

8

3

1
Friday
16th Oct
12

7

5

1
Saturday
17th Oct
11

6

4

2

5-day weather forecast updated at 04:03 on Tuesday 13th October 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 13th October 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 62% chance of some rain and a strong breeze of 40 kph from the west.

15
°C maximum temperature
8
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
1
UV index (Low)
62
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
40
kph wind from W

Letterkenny weather for Wednesday 14th October 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 97% chance of some rain and a strong breeze of 43 kph from the south.

16
°C maximum temperature
8
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
1
UV index (Low)
97
% chance of some rain
<10
mm of rainfall expected
16
°C wind chill
43
kph wind from S

Letterkenny weather for Thursday 15th October 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 50% chance of some rain and a fresh breeze of 31 kph from the south-west.

13
°C maximum temperature
8
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
1
UV index (Low)
50
% chance of some rain
<20
mm of rainfall expected
13
°C wind chill
31
kph wind from SW

Letterkenny weather for Friday 16th October 2026

Expect sunshine and showers in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and a gentle breeze of 13 kph from the north-west.

12
°C maximum temperature
7
°C minimum temperature
sunshine and showers
5
hours of sunshine
1
UV index (Low)
41
% chance of some rain
<2
mm of rainfall expected
12
°C wind chill
13
kph wind from NW

Letterkenny weather for Saturday 17th October 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.