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May Weather in Bialystok, Poland

Last updated: August 27, 2025

In May, the average temperature in Bialystok, Poland is a mild 13°C (56°F). However, expect a range with lows dipping to -1°C (30°F) and highs soaring up to 31°C (88°F). Rainfall averages 75 mm (3.0 in) over 12 days, and the atmosphere is comfortably humid, boasting an average humidity of 59%.

May Temperature in Bialystok

In May in Bialystok, the average temperature is 13°C (56°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures when traveling to Bialystok in May.

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

The chart illustrates May 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, May typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (88°F) and lows dropping to around -1°C (30°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.

May Precipitation in Bialystok

In Bialystok in May, the precipitation amount is 75 mm (3.0 in) over the course of 12 days.

May Precipitation Trends in Bialystok

The chart displays monthly precipitation patterns in Bialystok, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Bialystok, May typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec444243457560988968643956
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Bialystok

In Bialystok in May humidity is 59%. With an average temperature of 13°C (56°F), this humidity feels like a refreshing chill in the air, making it comfortable for traveling and exploring, but be prepared for a slight dampness that adds a crispness to the atmosphere.

May Average Humidity in Bialystok

This chart illustrates the average monthly humidity levels in Bialystok, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Bialystok is approximately 59%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Bialystok

In Bialystok in May, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Bialystok, you can refer to this Hourly UV Index in Bialystok.

Maximum UV Index Levels in Bialystok for May

The chart shows the monthly maximum UV Index (UVI) for Bialystok in May, 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 May, the maximum UV index in Bialystok typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568775321
Data source: Bialystok May 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 May 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 May’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 May’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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