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
During the coldest month, January, temperatures average a high of 4.4°C (39.9°F) and a low of 1.2°C (34.2°F).Humidity
The average relative humidity in January in Altena is 87%.Rainfall
In Altena, Netherlands, in January, it is raining for 14.4 days, with typically 25mm (0.98") of accumulated precipitation. Throughout the year, in Altena, Netherlands, there are 179 rainfall days, and 336mm (13.23") of precipitation is accumulated.Snowfall
Months with snowfall in Altena, Netherlands, are January through March, November and December. The month with the most snowfall in Altena, Netherlands, is January, when snow falls for 4.3 days and typically aggregates up to 17mm (0.67") of snow.Daylight
In Altena, the average length of the day in January is 8h and 13min.On the first day of January in Altena, sunrise is at 08:48 and sunset at 16:26. On the last day of the month, sunrise is at 08:19 and sunset at 17:14 CET.
Sunshine
The average sunshine in January in Altena is 3.7h.UV index
January, February, 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 unsafe exposure to UV radiation for average individuals.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What month is the coldest in Altena?
Is January cold in Altena?
What is the average humidity in January in Altena?
How many days does it rain in January in Altena?
What is the snowiest month in Altena?
How much does it snow in Altena in January?
How many hours of daylight does Altena have in January?
When are sunrise and sunset in January in Altena?
How long on average sun shines in January in Altena?
When is the lowest UV index in Altena?
How high is the UV index in January in Altena?
Average temperature in January
Altena, Netherlands
- Average high temperature in January: 4.4°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (4.4°C).
- Average low temperature in January: 1.2°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is February (1°C).
Average pressure in January
Altena, Netherlands
- Average pressure in January: 1013.9mbar
The months with the highest atmospheric pressure are May and September (1016.4mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in January
Altena, Netherlands
- Average wind speed in January: 20.9km/h
The windiest month (with the highest average wind speed) is December (21.2km/h).
The calmest month (with the lowest average wind speed) is July (14km/h).
Average humidity in January
Altena, Netherlands
- Average humidity in January: 87%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in January
Altena, Netherlands
- Average rainfall in January: 25mm
The wettest month (with the highest rainfall) is June (41mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in January
Altena, Netherlands
- Average rainfall days in January: 14.4 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in January
Altena, Netherlands
- Average snowfall in January: 17mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Altena, Netherlands
- Average snowfall days in January: 4.3 days
The month with the highest number of snowfall days is February (4.8 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
Altena, Netherlands
- 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 4min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in January
Altena, Netherlands
- Average sunshine days in January: 11.1 days
The months with the most sunshine days are March and April (14.8 days).
The month with the least sunshine days is December (9 days).
Average UV index in January
Altena, Netherlands
- Average UV index in January: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Altena, Netherlands
- Average cloud cover in January: 65
The month with the most cloud cover is December (Cloud cover 68).
The months with the least cloud cover are April and August (Cloud cover 41).
Average visibility in January
Altena, Netherlands
- Average visibility in January: 9km
The months with the highest visibility are April and August (10km).
The months with the lowest visibility are January, February, March, May, June, July, September, October, November and December (9km).
Altena, Netherlands
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