January weather forecastSiennów, Poland

January weather for Siennów, Poland: January, like December, is a freezing cold winter month in Siennów, Poland, with an average temperature fluctuating between -4.5°C (23.9°F) and -0.1°C (31.8°F). In Siennów, Poland, in January, during 13.9 snowfall days, 53mm (2.09") of snow is typically accumulated.

January

Weather in January

January, like December, is a freezing cold winter month in Siennów, Poland, with an average temperature fluctuating between -4.5°C (23.9°F) and -0.1°C (31.8°F).

Temperature

In Siennów, January records the lowest average temperatures, peaking at -0.1°C (31.8°F) and reaching a low of -4.5°C (23.9°F).

Humidity

With an average relative humidity of 89%, January is the most humid month.

Rainfall

The month with the least rainfall is January, when the rain falls for 7.4 days and typically collects 15mm (0.59") of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Siennów, during January, snow falls for 13.9 days and regularly aggregates up to 53mm (2.09") of snow. Throughout the year, in Siennów, there are 47.1 snowfall days, and 223mm (8.78") of snow is accumulated.

Daylight

In January, the average length of the day in Siennów is 8h and 39min.
On the first day of the month, sunrise is at 07:28 and sunset at 15:38. On the last day of January, sunrise is at 07:05 and sunset at 16:21 CET.

Sunshine

With an average of 2.9h of sunshine, January has the least sunshine of the year in Siennów.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In January, a daily UV index of 1 turns into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.

Frequently asked questions

The coldest time of the year is January, with temperatures averaging a high of -0.1°C (31.8°F) and a low of -4.5°C (23.9°F).

The high-temperature during January is -0.1°C (31.8°F) and the low-temperature is -4.5°C (23.9°F).

With an average relative humidity of 89%, January is the most humid month.

The average relative humidity in January in Siennów, Poland, is 89%.

January is the month with the least rainfall in Siennów. Rain falls for 7.4 days and accumulates 15mm (0.59") of precipitation.

In Siennów, in January, during 7.4 rainfall days, 15mm (0.59") of precipitation is typically accumulated.

In Siennów, Poland, in January, during 13.9 snowfall days, 53mm (2.09") of snow is typically accumulated.

In Siennów, the average day length in January is 8h and 39min.

On the first day of January in Siennów, sunrise is at 07:28 and sunset at 15:38. On the last day of the month, sunrise is at 07:05 and sunset at 16:21 CET.

January has the least sunshine of the year, with an average of 2.9h of sunshine.

In Siennów, the average sunshine duration in January is 2.9h.

The months with the lowest UV index in Siennów are January, November and December, with an average maximum UV index of 1.

In Siennów, Poland, the average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Siennów, Poland

  • Average high temperature in January: -0.1°C

The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (-0.1°C).

  • Average low temperature in January: -4.5°C

The months with the highest average low temperature are July and August (13.9°C).
The coldest month (with the lowest average low temperature) is January (-4.5°C).

Average pressure in January
Siennów, Poland

  • Average pressure in January: 1018.2mbar

The month with the highest atmospheric pressure is October (1019.2mbar).
The month with the lowest atmospheric pressure is July (1014.2mbar).

Average wind speed in January
Siennów, Poland

  • Average wind speed in January: 13.2km/h

The windiest month (with the highest average wind speed) is December (13.9km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).

Average humidity in January
Siennów, Poland

  • Average humidity in January: 89%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (68%).

Average rainfall in January
Siennów, Poland

  • Average rainfall in January: 15mm

The wettest month (with the highest rainfall) is May (47mm).
The driest month (with the least rainfall) is January (15mm).

Average rainfall days in January
Siennów, Poland

  • Average rainfall days in January: 7.4 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.4 days).

Average snowfall in January
Siennów, Poland

  • Average snowfall in January: 53mm

The month with the highest snowfall is December (54mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in January
Siennów, Poland

  • Average snowfall days in January: 13.9 days

The month with the highest number of snowfall days is January (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Siennów, Poland

  • Average daylight in January: 8h and 42min

The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in January: 2h and 54min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in January
Siennów, Poland

  • Average sunshine days in January: 12.3 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in January
Siennów, Poland

  • Average UV index in January: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in January
Siennów, Poland

  • Average cloud cover in January: 71

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in January
Siennów, Poland

  • Average visibility in January: 7km

The months with the highest visibility are March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and February (7km).