January weather forecastSumar, Netherlands
January
Weather in January
January, the same as December, is an icy winter month in Sumar, Netherlands, with an average temperature fluctuating between 1.4°C (34.5°F) and 4.8°C (40.6°F).Temperature
With its high average temperature of 4.8°C (40.6°F) and a low of 1.4°C (34.5°F), January is regarded as the coldest month.Humidity
The average relative humidity in January is 87%.Rainfall
In Sumar, Netherlands, during January, the rain falls for 16 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, there are 193.8 rainfall days, and 494mm (19.45") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Sumar. In Sumar, during January, snow falls for 4.6 days and regularly aggregates up to 24mm (0.94") of snow. In Sumar, during the entire year, snow falls for 14.8 days and aggregates up to 72mm (2.83") of snow.Daylight
In January, the average length of the day in Sumar is 8h and 12min.On the first day of January in Sumar, sunrise is at 08:50 and sunset at 16:28. On the last day of the month, sunrise is at 08:22 and sunset at 17:16 CET.
Sunshine
In January, the average sunshine in Sumar is 3.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 2 in January suggests the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Sumar, Netherlands
- Average high temperature in January: 4.8°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 (4.8°C).
- Average low temperature in January: 1.4°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (1.3°C).
Average pressure in January
Sumar, 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 (1010.9mbar).
Average wind speed in January
Sumar, Netherlands
- Average wind speed in January: 21.2km/h
The windiest month (with the highest average wind speed) is December (21.7km/h).
The calmest month (with the lowest average wind speed) is July (14.3km/h).
Average humidity in January
Sumar, 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 (78%).
Average rainfall in January
Sumar, Netherlands
- Average rainfall in January: 47mm
The wettest month (with the highest rainfall) is July (52mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in January
Sumar, Netherlands
- Average rainfall days in January: 16 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is April (13.8 days).
Average snowfall in January
Sumar, Netherlands
- Average snowfall in January: 24mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in January
Sumar, Netherlands
- Average snowfall days in January: 4.6 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
Sumar, Netherlands
- Average daylight in January: 8h and 12min
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 42min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in January
Sumar, Netherlands
- Average sunshine days in January: 10.3 days
The month with the most sunshine days is October (14.5 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in January
Sumar, 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
Sumar, Netherlands
- Average cloud cover in January: 64
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
Sumar, Netherlands
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).





