Letterkenny in january: average Weather, Temperature and Climate
Weather in Letterkenny in january 2026
The weather in Letterkenny in the month of january comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout january
very bad weather 56.6cm
Weather at 6am
38°F
Cloudy
34% of time
17%
16%
10%
Weather at 12pm
43°F
Cloudy
40% of time
19%
14%
13%
Weather at 6pm
40°F
Cloudy
30% of time
20%
14%
13%
Weather at 3am
38°F
21%
20%
18%
15%
Evolution of daily average temperature and precipitation in Letterkenny in january
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Letterkenny in january.
The climate of Letterkenny in january is very bad
the weather in Letterkenny in january is wet (with 3.1in of precipitation over 5 days). This is better than the previous month since in december it receives an average of 3in of precipitation over 5 days.
The climate is quite cold in this city january. Plan to cover you well! The high seasonal norm is 45°F. In the morning the temperature drops to 38°F. Thus, the mean temperature average on this month of january in Letterkenny is 41°F. Note that these seasonal averages are in contrast with those observed in Letterkenny in january with a maximum record of 58°F in 2016 and a minimum record of 20°F in 2010. You need to prepare to have about 10 days with temperatures below 32°F, or 32% of time.
Day length in Letterkenny in january is 07:49. The sun rises at 08:46 and sunset is at 16:35.
Seasonal average climate and temperature of Letterkenny in january
Check below seasonal norms These statistics are set from the weather statements of the last years of the month of january.
| January | |||||
| Outside temperature | |||||
| Average temperature | 41°F | ||||
| Highest temperature | 45°F | ||||
| Lowest temperature | 38°F | ||||
| Highest record temperature | 58°F (2016) | ||||
| Lowest record temperature | 20°F (2010) | ||||
| Number of days at -32°F | 10 day(s) (32%) | ||||
| Sea temperature | |||||
| Average sea temperature | 50°F | ||||
| Lowest sea temperature | 47°F | ||||
| Highest sea temperature | 52°F | ||||
| Wind | |||||
| Wind speed | 23km/h | ||||
| Wind temperature | 31°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.1in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 0.9in (2013) | ||||
| Snowfall | 56.6cm | ||||
| Other climate data | |||||
| Humidity | 93% | ||||
| Visibility | 7.96km | ||||
| Cloud cover | 68% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 5 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 08:46 | ||||
| Time of sunset | 16:35 | ||||
| Length of day | 07:49 | ||||
| Our opinion about the weather in january | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last january?
Here is the day by day recorded weather in Letterkenny in january 2025:
40°F to 45°F
36°F to 40°F
38°F to 43°F
32°F to 38°F
36°F to 38°F
36°F to 40°F
34°F to 38°F
29°F to 36°F
31°F to 38°F
27°F to 36°F
36°F to 40°F
36°F to 47°F
52°F to 54°F
47°F to 54°F
49°F to 54°F
40°F to 47°F
45°F to 49°F
43°F to 49°F
45°F to 49°F
45°F to 47°F
41°F to 45°F
36°F to 41°F
40°F to 43°F
40°F to 45°F
32°F to 40°F
31°F to 43°F
38°F to 43°F
45°F to 47°F
40°F to 45°F
38°F to 45°F
40°F to 45°F
Map: other cities in Ireland in january
Cities near Letterkenny:
| Ballybofey in january | very bad weather |
| Buncrana in january | very bad weather |
| Dunfanaghy in january | very bad weather |
| Derrybeg in january | very bad weather |
| Dungloe in january | very bad weather |
| Donegal in january | very bad weather |
| Moville in january | very bad weather |
| Malin Head in january | very bad weather |
| Ballyshannon in january | very bad weather |
| Killybegs in january | very bad weather |
| Bundoran in january | very bad weather |
| Gleann Cholm Cille in january | very bad weather |
Click over cities on the map for information about the weather in january.
Letterkenny
perfect weather
good
tolerable
bad
very bad
Weather data for Letterkenny in january:
Weather data for Letterkenny for january are derived from an average of the weather forecast since 2009 in Letterkenny. There is a margin of error and these forecasts are to be considered as general information only. The weather in Letterkenny can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Letterkenny.