Białystok Weather in May
In Białystok, May brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 8°C (46°F). Expect quite a bit of rainfall this month.
Rainfall in Białystok in May
On average, there are about 13 days with rain during this month, averaging 72 mm (2.8 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Białystok in May
The temperature in Białystok in May is perfect. Daytime highs reach 20°C (68°F), with nights dropping to 8°C (46°F). The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Białystok in May
The city usually sees around 207 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Białystok in May
May sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Poland, check out our Białystok's climate page.
Białystok Temperature in May
Min Temperature
8°C (46°F)
Max Temperature
20°C (68°F)
Chance of Rain
44%
Precipitation
72 mm (2.8 in)
Rainy days
13 days
Humidity
66% *
Windspeed
2 m/s (4 knots) *
Sunshine
207 hours *
Percentage Sunshine
42% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Białystok typically rise from around 17°C (63°F) at the start of May to approximately 20°C (68°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 9°C (48°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Białystok in May
Browse day-by-day weather records for Białystok spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Białystok historical weather extremes in May
According to our 50 years of weather records for Białystok, the following extremes were recorded between 1976 and 2026.
- Białystok recorded its highest May temperature of 31°C (88°F) on May 29, 2005.
- The lowest overnight temperature recorded in May was -4°C (25°F) (May 4, 1981).
Best Places in Poland in May
Find out more about the weather in Poland and which places have the best travel conditions in this month. See all of Poland in May →
perfect weather
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tolerable
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What to Wear in Białystok in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Białystok in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Poland, check out our Białystok's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Białystok climate overview or explore weather in Poland.
