Climate averages 1991–2020
Białystok weather
in April.
A cool, moderately wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Białystok: daytime highs average 12.5°C and nights cool to about 3.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 46 mm of rain on roughly 10 days, which makes April a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 56 min on an average April day.
The nearest other city in this atlas is Hrodna (75 km away). In April its highs average 12.1°C, about as warm as Białystok, with 46 mm of rain.
Among the 60 cities listed in Poland, Białystok ranks 53rd of 60 for the warmest April highs and joint 31st of 60 for the driest April (rainfall, lowest first). The mean April high of those 60 cities is 13.4°C; Białystok is 0.8°C cooler than that mean.
From April to May, average highs rise by 5.5°C to 18.0°C, and monthly rainfall rises from 46 mm to 67 mm.
The annual picture
April 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
Białystok climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.6°C-5.1°C | -5.1°C | 39 | 10.4 | 8.28 h |
| February | 0.7°C-4.6°C | -4.6°C | 38 | 9.5 | 9.810 h |
| March | 5.5°C-2.0°C | -2.0°C | 41 | 10.4 | 11.812 h |
| April, selected | 12.5°C3.0°C | 3.0°C | 46 | 9.9 | 13.914 h |
| May | 18.0°C8.4°C | 8.4°C | 67 | 12.0 | 15.816 h |
| June | 21.3°C12.2°C | 12.2°C | 70 | 12.6 | 16.917 h |
| July | 23.3°C14.6°C | 14.6°C | 84 | 13.2 | 16.416 h |
| August | 22.8°C14.1°C | 14.1°C | 68 | 10.4 | 14.815 h |
| September | 17.4°C10.0°C | 10.0°C | 58 | 9.6 | 12.713 h |
| October | 11.1°C5.2°C | 5.2°C | 48 | 9.9 | 10.611 h |
| November | 5.1°C1.1°C | 1.1°C | 41 | 9.7 | 8.79 h |
| December | 0.9°C-3.0°C | -3.0°C | 45 | 10.1 | 7.78 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
April in nearby cities
- Hrodna in AprilBelarus · 75 kmHigh 12.1°C · Low 2.8°C · 46 mm rain
- Brest in AprilBelarus · 120 kmHigh 13.2°C · Low 3.5°C · 47 mm rain
- Siedlce in AprilPoland · 123 kmHigh 12.9°C · Low 4.0°C · 46 mm rain
- Lida in AprilBelarus · 164 kmHigh 11.9°C · Low 2.7°C · 45 mm rain
- Wawer in AprilPoland · 170 kmHigh 13.5°C · Low 4.0°C · 46 mm rain
- Praga Południe in AprilPoland · 171 kmHigh 13.6°C · Low 4.0°C · 46 mm rain
- Białołeka in AprilPoland · 173 kmHigh 13.6°C · Low 3.9°C · 46 mm rain
- Warsaw in AprilPoland · 176 kmHigh 13.5°C · Low 3.9°C · 46 mm rain
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 Białystok) is explained once on the Białystok year overview and on the Sources, method and limits page.