Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
In Lettermore, the lowest temperatures are generally noted in January, averaging a high of 7.9°C (46.2°F) and a low of 3.9°C (39°F).Humidity
The months with the highest humidity in Lettermore are January, July through December, with an average relative humidity of 87%.Rainfall
In Lettermore, Ireland, during January, the rain falls for 20.8 days and regularly aggregates up to 57mm (2.24") of precipitation. In Lettermore, during the entire year, the rain falls for 235.1 days and collects up to 619mm (24.37") of precipitation.Snowfall
January through March and December are months with snowfall in Lettermore. January is the month with the most snowfall. Snow falls for 0.8 days and accumulates 7mm (0.28") of snow.Daylight
In January, the average length of the day in Lettermore is 8h and 11min.On the first day of January in Lettermore, sunrise is at 8:53 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 8:25 am and sunset at 5:18 pm GMT.
Sunshine
The average sunshine in January in Lettermore is 3.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In January, the UV index of 2 transforms into the following advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Lettermore?
What is the temperature in January in Lettermore?
What are the most humid months in Lettermore?
What is the average humidity in January in Lettermore?
How much does it rain in Lettermore in January?
When does it snow the most in Lettermore?
How much does it snow in Lettermore in January?
What is the average length of the day in January in Lettermore?
When are sunrise and sunset in January in Lettermore?
How long on average sun shines in January in Lettermore?
What is the month with the lowest UV index in Lettermore?
How high is the UV index in January in Lettermore?
Average temperature in January
Lettermore, Ireland
- Average high temperature in January: 7.9°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (7.9°C).
- Average low temperature in January: 3.9°C
The month with the highest average low temperature is August (11.4°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure in January
Lettermore, Ireland
- Average pressure in January: 1010.6mbar
The month with the highest atmospheric pressure is May (1015.7mbar).
The month with the lowest atmospheric pressure is November (1007.7mbar).
Average wind speed in January
Lettermore, Ireland
- Average wind speed in January: 22.1km/h
The windiest months (with the highest average wind speed) are February and December (22.2km/h).
The calmest month (with the lowest average wind speed) is July (14.8km/h).
Average humidity in January
Lettermore, Ireland
- Average humidity in January: 87%
The months with the highest relative humidity are January, July, August, September, October, November and December (87%).
The months with the lowest relative humidity are March and April (83%).
Average rainfall in January
Lettermore, Ireland
- Average rainfall in January: 57mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is April (36mm).
Average rainfall days in January
Lettermore, Ireland
- Average rainfall days in January: 20.8 days
The month with the highest number of rainy days is August (23.2 days).
The month with the least rainy days is April (17.3 days).
Average snowfall in January
Lettermore, Ireland
- Average snowfall in January: 7mm
The month with the highest snowfall is January (7mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in January
Lettermore, Ireland
- Average snowfall days in January: 0.8 days
The month with the highest number of snowfall days is March (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Lettermore, Ireland
- Average daylight in January: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in January: 3h and 5min
The month with the most sunshine is June (Average sunshine: 7h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in January
Lettermore, Ireland
- Average sunshine days in January: 6.6 days
The month with the most sunshine days is March (9.4 days).
The month with the least sunshine days is August (4.1 days).
Average UV index in January
Lettermore, Ireland
- Average UV index in January: 2
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Lettermore, Ireland
- Average cloud cover in January: 64
The month with the most cloud cover is July (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 56).
Average visibility in January
Lettermore, Ireland
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
Lettermore, Ireland
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