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.

Wednesday
14th Oct
16

8

1

0
Thursday
15th Oct
13

8

4

1
Friday
16th Oct
12

6

5

1
Saturday
17th Oct
11

5

6

2
Sunday
18th Oct
11

4

3

2

5-day weather forecast updated at 04:03 on Wednesday 14th October 2026 GMT

More about Letterkenny

Letterkenny by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ireland

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

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 14th October 2026

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 16°C and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 100% chance of some rain and a strong breeze of 41 kph from the south.

16
°C maximum temperature
8
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
0
UV index (None)
100
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
41
kph wind from S

Letterkenny weather for Thursday 15th October 2026

Expect sunshine and showers in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 27% chance of some rain and a moderate breeze of 22 kph from the west.

13
°C maximum temperature
8
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
27
% chance of some rain
<20
mm of rainfall expected
13
°C wind chill
22
kph wind from W

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 46% chance of some rain and a moderate breeze of 23 kph from the north-west.

12
°C maximum temperature
6
°C minimum temperature
sunshine and showers
5
hours of sunshine
1
UV index (Low)
46
% chance of some rain
<2
mm of rainfall expected
12
°C wind chill
23
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 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

11
°C maximum temperature
5
°C minimum temperature
broken clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
11
°C wind chill
13
kph wind from SE

Letterkenny weather for Sunday 18th October 2026

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 11°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.