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Monthly climate in Sejny, Podlasie, Poland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sejny features a humid continental climate (Dfb).Temperatures typically range between -2 °C (29 °F) and 19 °C (66 °F) through the year, but rarely can drop to -24 °C (-10 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 685 mm (27.0 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually.Sejny enjoys an average of 3275 hours of sunshine throughout the year, and daylight varies from 7 hours 26 minutes to 17 hours 3 minutes per day.

Monthly average temperatures in Sejny, Podlasie, Poland §

The warmest months in Sejny are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (65 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 0 °C (29 - 32 °F) throughout the day. On average each year, Sejny experiences 30 days above 25 °C (77.0 °F) and 97 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sejny, Podlasie, Poland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 8°C
(47°F)		 11°C
(53°F)		 16°C
(62°F)		 25°C
(77°F)		 29°C
(85°F)		 33°C
(92°F)		 31°C
(89°F)		 31°C
(88°F)		 28°C
(82°F)		 23°C
(73°F)		 16°C
(61°F)		 10°C
(50°F)
Mean maximum 6°C
(43°F)		 8°C
(47°F)		 14°C
(57°F)		 22°C
(71°F)		 25°C
(78°F)		 28°C
(82°F)		 29°C
(85°F)		 29°C
(85°F)		 26°C
(79°F)		 20°C
(67°F)		 14°C
(57°F)		 7°C
(45°F)
Average high 0°C
(33°F)		 1°C
(34°F)		 6°C
(43°F)		 12°C
(54°F)		 17°C
(63°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 18°C
(65°F)		 13°C
(55°F)		 6°C
(43°F)		 2°C
(35°F)
Daily mean -2°C
(29°F)		 -1°C
(30°F)		 2°C
(36°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(65°F)		 19°C
(66°F)		 18°C
(65°F)		 14°C
(57°F)		 9°C
(48°F)		 4°C
(40°F)		 0°C
(32°F)
Average low -4°C
(25°F)		 -3°C
(26°F)		 -2°C
(29°F)		 2°C
(36°F)		 7°C
(45°F)		 13°C
(55°F)		 14°C
(58°F)		 13°C
(56°F)		 10°C
(49°F)		 6°C
(43°F)		 2°C
(37°F)		 -2°C
(29°F)
Mean minimum -14°C
(6°F)		 -12°C
(11°F)		 -9°C
(16°F)		 -4°C
(25°F)		 1°C
(34°F)		 6°C
(42°F)		 10°C
(49°F)		 8°C
(47°F)		 3°C
(38°F)		 -0°C
(32°F)		 -4°C
(25°F)		 -8°C
(18°F)
Minimum -24°C
(-10°F)		 -20°C
(-4°F)		 -21°C
(-5°F)		 -5°C
(23°F)		 -1°C
(30°F)		 3°C
(38°F)		 8°C
(46°F)		 7°C
(44°F)		 -0°C
(31°F)		 -2°C
(28°F)		 -7°C
(20°F)		 -14°C
(8°F)

Compare climate in Sejny with other places

Compare temperature, precipitation, sunshine, UV index in Sejny, Podlasie, Poland with other places around the world.

Monthly average precipitation in Sejny, Podlasie, Poland §

Sejny usually has the most precipitation in May, July and August, with an average of 12 rainy days and 83 mm (3.3 inches) of precipitation per month.The driest months in Sejny are February, March and November. On average, 38 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sejny, Podlasie, Poland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 41 (1.6) 34 (1.3) 40 (1.6) 45 (1.8) 70 (2.8) 51 (2.0) 93 (3.7) 87 (3.4) 70 (2.7) 61 (2.4) 39 (1.5) 53 (2.1)
Average precipitation days (≥ 1 mm) 11 9 12 9 11 11 14 12 10 12 11 13

Monthly sunshine hours in Sejny, Podlasie, Poland §

The sunniest months in Sejny are May, June and July, when the sun shines an average of 13 hours 58 minutes a day.Least sunny months in Sejny: January, November and December receive an average of 3 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sejny, Podlasie, Poland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 80 172 257 334 413 439 432 384 292 226 132 108
Mean daily daylight hours 8h 0m 9h 45m 11h 53m 14h 5m 16h 1m 17h 3m 16h 30m 14h 45m 12h 38m 10h 28m 8h 30m 7h 26m

Solar UV radiation in Sejny, Podlasie, Poland §

Sejny experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 8, which corresponds to the High / Very High category of sun exposure.January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Sejny UV Index data.

Average daily maximum UV levels by month for Sejny, Podlasie, Poland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 2 4 5 6 8 7 6 5 3 2 1