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April Weather in Bialystok, Poland

Last updated: August 27, 2025

In April, the average temperature in Bialystok, Poland is a brisk 8°C (46°F). Visitors can expect a minimum dip to -5°C (23°F) and a balmy maximum of 27°C (80°F). During this time, precipitation measures around 45 mm (1.8 in) over approximately 10 days, with an average humidity level of 77%.

April Temperature in Bialystok

In April in Bialystok, the average temperature is 8°C (46°F). Maximums can reach 27°C (80°F) while minimums can drop to as low as -5°C (23°F). This range makes it essential for travelers to pack layers to accommodate both warm and chilly conditions.

April Weather in Bialystok: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Bialystok, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bialystok, April typically has an average temperature of 8°C (46°F), with highs reaching up to 27°C (80°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec293137465566666657494032
Data source: Temperature data for Bialystok generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Bialystok

In Bialystok in April, the precipitation amount is 45 mm (1.8 in) spread over a duration of 10 days.

April Precipitation Trends in Bialystok

The chart displays monthly precipitation patterns in Bialystok, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Bialystok, April typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec444243457560988968643956
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Bialystok

In Bialystok in April humidity is 77%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill wrapping around you, making outdoor activities less inviting and requiring extra layers to stay comfortable while exploring.

April Average Humidity in Bialystok

This chart illustrates the average monthly humidity levels in Bialystok, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Bialystok is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%91%88%77%59%59%60%60%72%89%91%93%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Bialystok

In Bialystok in April, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Bialystok.

Maximum UV Index Levels in Bialystok for April

The chart shows the monthly maximum UV Index (UVI) for Bialystok in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Bialystok typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568775321
Data source: Bialystok April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Bialystok Compares to Other Months

Weather in Bialystok varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Bialystok, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bialystok, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)44 mm (1.7 inches)93%low
February Weather-1°C (31°F)42 mm (1.6 inches)90%low
March Weather3°C (37°F)42 mm (1.7 inches)88%moderate
April Weather8°C (46°F)45 mm (1.8 inches)77%moderate
May Weather13°C (56°F)75 mm (3.0 inches)59%high
June Weather19°C (66°F)60 mm (2.3 inches)59%very high
July Weather19°C (67°F)98 mm (3.9 inches)60%high
August Weather19°C (66°F)89 mm (3.5 inches)60%high
September Weather14°C (57°F)68 mm (2.7 inches)72%moderate
October Weather9°C (49°F)64 mm (2.5 inches)88%moderate
November Weather5°C (40°F)39 mm (1.5 inches)91%low
December Weather0°C (33°F)56 mm (2.2 inches)93%low

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