Weather in January
Temperature
Londonderry experiences the lowest of its temperatures in January and December, when the average high-temperatures rise to 8°C (46.4°F).Rainfall
In Londonderry, during January, the rain falls for 17 days and regularly aggregates up to 84mm (3.31") of precipitation. Throughout the year, in Londonderry, there are 170 rainfall days, and 853mm (33.58") of precipitation is accumulated.Sea temperature
In January, the average sea temperature is 9.5°C (49.1°F).Note: Swimming at temperatures less than 10°C (50°F) in 9.5°C (49.1°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
The average length of the day in January is 7h and 55min.On the first day of January in Londonderry, sunrise is at 8:53 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 8:22 am and sunset at 5:02 pm GMT.
Sunshine
The average sunshine in January in Londonderry, United Kingdom, is 1.7h.UV index
The months with the lowest UV index in Londonderry are January and December, with an average maximum UV index of 0. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In January, a daily maximum UV index of 0 leads to the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
What month is the coldest in Londonderry?
What is the average January temperature in Londonderry?
How many days does it rain in January in Londonderry?
How cold is the water in January in Londonderry?
How many hours of daylight does Londonderry have in January?
When is the sunrise / sunset in January in Londonderry?
How long on average sun shines in January in Londonderry?
What are the months with the lowest UV index in Londonderry?
How high is the UV index in January in Londonderry?
Average temperature in January
Londonderry, United Kingdom
- Average high temperature in January: 8°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The months with the lowest average high temperature are January and December (8°C).
- Average low temperature in January: 2.2°C
The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).
Average rainfall in January
Londonderry, United Kingdom
- Average rainfall in January: 83.5mm
The wettest month (with the highest rainfall) is October (89mm).
The driest month (with the least rainfall) is May (51.2mm).
Average rainfall days in January
Londonderry, United Kingdom
- Average rainfall days in January: 17 days
The month with the highest number of rainy days is November (19 days).
The month with the least rainy days is June (11 days).
Average sea temperature in January
Londonderry, United Kingdom
- Average sea temperature in January: 9.5°C
The best month for swimming (with the highest average sea temperature) is August (14.7°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in January /
Average sunshine in January
Londonderry, United Kingdom
- Average daylight in January: 7h and 5min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in January: 1h and 4min
The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average UV index in January
Londonderry, United Kingdom
- Average UV index in January: 0
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 0).
Londonderry, United Kingdom
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