Weather Letterkenny long-term weather forecast

Long-term weather forecast for Letterkenny for ten days.

Thursday, Sep 11

57 / 46°F

0.00 in

15 mph

52 °F	48 °F	1 am
50 °F	46 °F	7 am
55 °F	52 °F	1 pm
52 °F	50 °F	7 pm

sunrise 6:55 am
sunset 7:57 pm

HOURLY

During the day overcast, later morning light rain showers, in the afternoon rain showers. The highest temperature 57 °F. Total rainfall 0.09 in. At night partly cloudy. The lowest temperature 46 °F.

Interactive map weather Ireland

GPS: 54.9500; -7.7333

altitude: 26 ft
local time:

PLACES IN THE AREA

Weather forecast Letterkenny, Ireland extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Thursday 09/11/2025
1 AM 8 PM	overcast	52 °F 50 °F	0.01 in	22 fps 15 mph west-southwest	29.3 in	89 %	48 °F	95 %	0%	87%	32%	50%
7 AM 2 AM	light rain showers	50 °F 46 °F	0.02 in	20 fps 14 mph southwest	29.4 in	89 %	46 °F	85 %	0%	30%	11%	77%
1 PM 8 AM	rain showers	55 °F 52 °F	0.06 in	21 fps 15 mph southwest	29.4 in	73 %	46 °F	67 %	0%	28%	21%	46%
7 PM 2 PM	overcast	52 °F 50 °F	0.00 in	13 fps 9 mph south-southwest	29.4 in	85 %	46 °F	96 %	0%	50%	92%	74%
Friday 09/12/2025
1 AM 8 PM	partly cloudy	46 °F 43 °F	0.0 in	13 fps 9 mph south	29.4 in	92 %	45 °F	21 %	0%	3%	2%	17%
7 AM 2 AM	rain	48 °F 45 °F	0.08 in	19 fps 13 mph south	29.3 in	91 %	46 °F	87 %	0%	39%	15%	78%
1 PM 8 AM	rain	57 °F 54 °F	0.13 in	28 fps 19 mph south	29.2 in	75 %	48 °F	100 %	0%	33%	14%	100%
7 PM 2 PM	overcast	54 °F 52 °F	0.00 in	20 fps 14 mph south	29.2 in	87 %	50 °F	93 %	0%	20%	18%	91%

Letterkenny, Ireland - information

State: Ireland

GPS coordinates: 54.9500; -7.7333

Time zone: Europe / Dublin time difference in hours with time in NY is -1 hours

Population: 19 274
Altitude: 26 ft
The administrative part:

Ulster, Monaghan
County Donegal, Donegal

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Weather Letterkenny, Ireland. Weather forecast Letterkenny.

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Data source

Weather forecast for Letterkenny is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Letterkenny

data are always in the local time

Sun and light

Sept. 11, 2025

Sunrise:	Sunset:
6:55 am	7:57 pm
Noon:	Length of day:
1:27 pm	13:01
Start of civil twilight*:	End of civil twilight*:
6:18 am	8:35 pm
Start of nautical twilight*:	End of nautical twilight*:
5:34 am	9:18 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:45 am	10:07 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/10/2025 8:29 pm	09/11/2025 12:23 pm
Next new moon:	Next full moon:
09/21/2025	10/06/2025