Climate averages 1991–2020
Bytom weather
in January.
A cold month with moderate precipitation: the coolest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Bytom: daytime highs average 0.7°C and nights cool to about -4.6°C. By daytime temperature it is the coolest month of the year.
Expect about 46 mm of precipitation on roughly 11 days, which makes January a month with moderate precipitation (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 34 min on an average January day.
The nearest other city in this atlas is Zabrze (11 km away). In January its highs average 0.9°C, about as warm as Bytom, with 46 mm of precipitation.
Among the 60 cities listed in Poland, Bytom ranks joint 39th of 60 for the warmest January highs and joint 38th of 60 for the driest January (precipitation, lowest first). The mean January high of those 60 cities is 1.1°C; Bytom is 0.5°C cooler than that mean.
From January to February, average highs rise by 2.0°C to 2.6°C, and monthly precipitation falls from 46 mm to 43 mm.
The annual picture
January in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bytom climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 0.7°C-4.6°C | -4.6°C | 46 | 11.4 | 8.69 h |
| February | 2.6°C-3.9°C | -3.9°C | 43 | 10.4 | 10.010 h |
| March | 7.4°C-0.8°C | -0.8°C | 52 | 11.8 | 11.812 h |
| April | 13.7°C3.8°C | 3.8°C | 50 | 10.1 | 13.814 h |
| May | 18.1°C8.9°C | 8.9°C | 80 | 13.9 | 15.415 h |
| June | 21.3°C12.6°C | 12.6°C | 82 | 13.2 | 16.316 h |
| July | 23.3°C14.6°C | 14.6°C | 98 | 14.0 | 16.016 h |
| August | 23.3°C14.4°C | 14.4°C | 71 | 11.3 | 14.515 h |
| September | 18.3°C10.4°C | 10.4°C | 71 | 11.1 | 12.713 h |
| October | 12.9°C6.1°C | 6.1°C | 54 | 10.0 | 10.811 h |
| November | 7.2°C1.7°C | 1.7°C | 50 | 10.1 | 9.19 h |
| December | 2.1°C-2.7°C | -2.7°C | 45 | 10.7 | 8.18 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Zabrze in JanuaryPoland · 11 kmHigh 0.9°C · Low -4.3°C · 46 mm precipitation
- Katowice in JanuaryPoland · 12 kmHigh 0.7°C · Low -4.6°C · 46 mm precipitation
- Sosnowiec in JanuaryPoland · 14 kmHigh 0.8°C · Low -4.5°C · 46 mm precipitation
- Gliwice in JanuaryPoland · 19 kmHigh 1.2°C · Low -4.0°C · 46 mm precipitation
- Dąbrowa Górnicza in JanuaryPoland · 19 kmHigh 0.7°C · Low -4.6°C · 46 mm precipitation
- Mysłowice in JanuaryPoland · 23 kmHigh 0.8°C · Low -4.6°C · 46 mm precipitation
- Tychy in JanuaryPoland · 24 kmHigh 0.8°C · Low -4.7°C · 46 mm precipitation
- Jaworzno in JanuaryPoland · 29 kmHigh 0.4°C · Low -5.0°C · 46 mm precipitation
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bytom) is explained once on the Bytom year overview and on the Sources, method and limits page.
Katowice, Sosnowiec and Tychy lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.