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
January
Weather in January
Temperature
The month of January, characterized by an average high of 7°C (44.6°F) and a low of 2.3°C (36.1°F), is recognized as the coldest.Humidity
In Derrymullan, the average relative humidity in January is 90%.Rainfall
In Derrymullan, in January, it is raining for 17.2 days, with typically 27mm (1.06") of accumulated precipitation. In Derrymullan, during the entire year, the rain falls for 191.7 days and collects up to 375mm (14.76") of precipitation.Snowfall
Months with snowfall are January through April, November and December. The months with the most snowfall are January and February, with an average 12mm (0.47") of accumulated snow.Daylight
In Derrymullan, the average length of the day in January is 8h and 11min.On the first day of January, sunrise is at 8:48 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 8:19 am and sunset at 5:13 pm GMT.
Sunshine
The months with the least sunshine are January, February, October and December, with an average of 3.8h of sunshine.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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during January translates into the following guidance:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is it in January?
What is the average humidity in January?
How many days does it rain in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Derrymullan have in January?
When are sunrise and sunset in January?
What are the months with the least sunshine?
How many hours of sunshine does Derrymullan have in January?
What are the months with the lowest UV index?
How high is the UV index in January in Derrymullan?
Average temperature in January
Derrymullan, Ireland
- Average high temperature in January: 7°C
The warmest month (with the highest average high temperature) is July (17.4°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in January: 2.3°C
The month with the highest average low temperature is July (10.5°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).
Average pressure in January
Derrymullan, Ireland
- Average pressure in January: 1010.5mbar
The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.6mbar).
Average wind speed in January
Derrymullan, Ireland
- Average wind speed in January: 19.3km/h
The windiest month (with the highest average wind speed) is January (19.3km/h).
The calmest month (with the lowest average wind speed) is July (13.1km/h).
Average humidity in January
Derrymullan, Ireland
- Average humidity in January: 90%
The months with the highest relative humidity are November and December (91%).
The month with the lowest relative humidity is April (85%).
Average rainfall in January
Derrymullan, Ireland
- Average rainfall in January: 27mm
The wettest month (with the highest rainfall) is August (45mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in January
Derrymullan, Ireland
- Average rainfall days in January: 17.2 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (13.1 days).
Average snowfall in January
Derrymullan, Ireland
- Average snowfall in January: 12mm
The months with the highest snowfall are January and February (12mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in January
Derrymullan, Ireland
- Average snowfall days in January: 2.1 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Derrymullan, 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: 6h and 42min).
The months with the least sunshine are January, February, October and December (Average sunshine: 3h and 48min).
Average sunshine days in January
Derrymullan, Ireland
- Average sunshine days in January: 9.9 days
The month with the most sunshine days is April (12.3 days).
The month with the least sunshine days is August (6.3 days).
Average UV index in January
Derrymullan, Ireland
- Average UV index in January: 2
The month with the highest UV index is June (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
Derrymullan, Ireland
- Average cloud cover in January: 63
The months with the most cloud cover are July and August (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in January
Derrymullan, Ireland
- Average visibility in January: 9km
The months with the highest visibility are January, February, March and December (9km).
The month with the lowest visibility is July (7km).
