May weather forecast
Bialystok, Poland

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Weather in May

The transition to early summer is made evident with May's warmer temperatures, reaching up to 18.9°C (66°F) during the day. The city's landscapes transform extensively with lush greenery taking over. Residents enjoy the prolonged sunshine hours, understanding that the comfort of spring weather is gradually transitioning to the warm embrace of summer. May is also when the city experiences increased rainfall, signaling the initiation of the rainy season. However, the healthy balance between rainfall and sunshine days creates a lively weather dynamic for the people of Bialystok, who anticipate the sun-infused June.

Temperature

The shift into May is characterized by a rise in the average high-temperature, transitioning from April's refreshing 13.3°C (55.9°F) to an enjoyable 18.9°C (66°F). In the month of May, the nighttime temperature in Bialystok dips to a steady average of 8.3°C (46.9°F).

Humidity

In Bialystok, the average relative humidity in May is 73%.

Rainfall

In May, in Bialystok, the rain falls for 19.3 days. Throughout May, 62mm (2.44") of precipitation is accumulated. In Bialystok, during the entire year, the rain falls for 164.4 days and collects up to 515mm (20.28") of precipitation.

Snowfall

In Bialystok, snow does not fall in May through September.

Daylight

In May, the average length of the day is 15h and 52min.
On the first day of the month, sunrise is at 04:52 and sunset at 19:56. On the last day of May, in Bialystok, sunrise is at 04:07 and sunset at 20:42 CEST.

Sunshine

In May, the average sunshine in Bialystok is 9h.

UV index

In Bialystok, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.

Frequently asked questions

What is the temperature in May in Bialystok?

During May, Bialystok experiences an average high-temperature of 18.9°C (66°F) and a low-temperature of 8.3°C (46.9°F).

What is the average humidity in May in Bialystok?

The average relative humidity in May is 73%.

How many days does it rain in May in Bialystok?

In Bialystok, Poland, in May, it is raining for 19.3 days, with typically 62mm (2.44") of accumulated precipitation.

When it does not snow in Bialystok?

In Bialystok, Poland, snow does not fall in May through September.

Does it snow in Bialystok in May?

In May, in Bialystok, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Bialystok have in May?

In Bialystok, the average day length in May is 15h and 52min.

When is the sunrise / sunset in May in Bialystok?

On the first day of May, sunrise is at 04:52 and sunset at 19:56. On the last day of the month, sunrise is at 04:07 and sunset at 20:42 CEST.

How many hours of sunshine does Bialystok have in May?

In Bialystok, the average sunshine duration in May is 9h.

How high is the UV index in May in Bialystok?

The average daily maximum UV index in May in Bialystok, Poland, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bialystok, Poland

Average temperature in May - Bialystok, Poland
  • Average high temperature in May: 18.9°C

The warmest months (with the highest average high temperature) are July and August (24.2°C).
The month with the lowest average high temperature is January (-1.5°C).

  • Average low temperature in May: 8.3°C

The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-5.1°C).

Average pressure in May
Bialystok, Poland

Average pressure in May - Bialystok, Poland
  • Average pressure in May: 1015mbar

The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.1mbar).

Average wind speed in May
Bialystok, Poland

Average wind speed in May - Bialystok, Poland
  • Average wind speed in May: 10.9km/h

The windiest month (with the highest average wind speed) is December (13.2km/h).
The calmest month (with the lowest average wind speed) is August (9.7km/h).

Average humidity in May
Bialystok, Poland

Average humidity in May - Bialystok, Poland
  • Average humidity in May: 73%

The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and August (70%).

Average rainfall in May
Bialystok, Poland

Average rainfall in May - Bialystok, Poland
  • Average rainfall in May: 62mm

The wettest month (with the highest rainfall) is June (69mm).
The driest month (with the least rainfall) is April (27mm).

Average rainfall days in May
Bialystok, Poland

Average rainfall days in May - Bialystok, Poland
  • Average rainfall days in May: 19.3 days

The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is February (7.9 days).

Average snowfall in May
Bialystok, Poland

Average snowfall in May - Bialystok, Poland
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (192mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in May
Bialystok, Poland

Average snowfall days in May - Bialystok, Poland
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Bialystok, Poland

Average daylight in May / Average sunshine in May - Bialystok, Poland
  • Average daylight in May: 15h and 5min

The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 12min).

Average sunshine days in May
Bialystok, Poland

Average sunshine days in May - Bialystok, Poland
  • Average sunshine days in May: 9.3 days

The month with the most sunshine days is October (15.5 days).
The months with the least sunshine days are January and February (6.8 days).

Average UV index in May
Bialystok, Poland

Average UV index in May - Bialystok, Poland
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in May
Bialystok, Poland

Average cloud cover in May - Bialystok, Poland
  • Average cloud cover in May: 44

The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Bialystok, Poland

Average visibility in May - Bialystok, Poland
  • Average visibility in May: 9km

The months with the highest visibility are April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (6km).

Bialystok, Poland

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