Warsaw weather in January
In January, Warsaw has an average high of −1 °C30 °F and an average low of −7 °C20 °F, with about 45 mm1.8 in of precipitation. January is the coldest month of the year and ranks 7th for precipitation.
How January compares with other months
Compared with December, January is 2.5 °C4.5 °F cooler on average. Compared with February, January is 1.7 °C3.1 °F cooler on average and wetter by 7 mm0.3 in. Daylight lasts about 8.2 hours around the middle of the month. Average relative humidity is 94% and the average cloud amount 82%.
Is January a good time to visit Warsaw?
January is not among the most comfortable months by our comfort score: it is cool (average high −1 °C30 °F) and nights are cold (average low −7 °C20 °F). The most comfortable months in Warsaw are May–September.
What to wear in January
For Warsaw in January, pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
January in nearby places
Other months in Warsaw
- January−1 °C30 °F / −7 °C20 °F
- February1 °C34 °F / −6 °C22 °F
- March7 °C45 °F / −2 °C28 °F
- April14 °C58 °F / 3 °C38 °F
- May20 °C68 °F / 9 °C48 °F
- June24 °C74 °F / 13 °C55 °F
- July26 °C79 °F / 15 °C60 °F
- August26 °C78 °F / 14 °C58 °F
- September20 °C68 °F / 9 °C49 °F
- October13 °C55 °F / 4 °C39 °F
- November6 °C44 °F / 1 °C33 °F
- December1 °C34 °F / −4 °C25 °F
Frequently asked questions
How warm is Warsaw in January?
In January the average high in Warsaw is -1 °C (30 °F) and the average low is -7 °C (20 °F).
Does it rain a lot in Warsaw in January?
On average about 45 mm (1.8 in) of precipitation falls in January; it ranks 7th of the 12 months.
Is January the warmest month in Warsaw?
No. The warmest month in Warsaw is July, with an average high of 26 °C (79 °F). The coldest month is January, with an average low of -7 °C (20 °F).
How long is the day in Warsaw in January?
In the middle of January the day in Warsaw lasts about 8.2 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Warsaw in January?
The average relative humidity in January is about 94%. This is a long-term average for the whole day.
How cloudy is Warsaw in January?
On average about 82% of the sky is covered by cloud in January. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.