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Monthly climate in Suwalki, Poland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Suwalki 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 -25 °C (-12 °F) or can rise to as high as 33 °C (91 °F). The average annual precipitation amounts to about 695 mm (27.4 inches) and receives 133 rainy days on the 1 mm (0.04 inches) threshold annually. Suwalki enjoys an average of 3300 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 Suwalki, Poland

The warmest months in Suwalki 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, Suwalki experiences 29 days above 25 °C (77.0 °F) and 98 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Suwalki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(47°F)		11°C
(52°F)		16°C
(61°F)		25°C
(77°F)		29°C
(85°F)		33°C
(91°F)		31°C
(88°F)		31°C
(89°F)		27°C
(82°F)		22°C
(73°F)		16°C
(61°F)		10°C
(49°F)
Mean maximum6°C
(42°F)		8°C
(47°F)		14°C
(57°F)		21°C
(71°F)		25°C
(77°F)		27°C
(82°F)		29°C
(84°F)		29°C
(85°F)		26°C
(79°F)		19°C
(67°F)		13°C
(56°F)		7°C
(45°F)
Average high0°C
(32°F)		1°C
(34°F)		6°C
(42°F)		12°C
(53°F)		17°C
(63°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		18°C
(65°F)		12°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)		12°C
(54°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)		-4°C
(26°F)		-2°C
(29°F)		2°C
(36°F)		7°C
(45°F)		13°C
(55°F)		14°C
(57°F)		13°C
(56°F)		10°C
(49°F)		6°C
(43°F)		2°C
(37°F)		-2°C
(29°F)
Mean minimum-15°C
(6°F)		-12°C
(10°F)		-9°C
(17°F)		-4°C
(25°F)		1°C
(34°F)		5°C
(42°F)		9°C
(49°F)		8°C
(46°F)		3°C
(38°F)		-0°C
(32°F)		-4°C
(25°F)		-8°C
(18°F)
Minimum-25°C
(-12°F)		-21°C
(-5°F)		-19°C
(-3°F)		-5°C
(23°F)		-1°C
(30°F)		3°C
(38°F)		8°C
(46°F)		6°C
(44°F)		-0°C
(32°F)		-3°C
(27°F)		-7°C
(20°F)		-13°C
(8°F)

Compare climate in Suwalki with other places

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

Monthly average precipitation in Suwalki, Poland

Suwalki usually has the most precipitation in May, July and August, with an average of 12 rainy days and 84 mm (3.3 inches) of precipitation per month. The driest months in Suwalki are February, March and November. On average, 39 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Suwalki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)43 (1.7)36 (1.4)42 (1.6)45 (1.8)70 (2.8)54 (2.1)95 (3.8)85 (3.3)69 (2.7)62 (2.4)40 (1.6)55 (2.2)
Average precipitation days (≥ 1 mm)1181291211121210121113

Monthly sunshine hours in Suwalki, Poland

The sunniest months in Suwalki are May, June and July, when the sun shines an average of 13 hours 58 minutes a day. Least sunny months in Suwalki: January, November and December receive an average of 3 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Suwalki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours83177257335414439432385295227138113
Mean daily daylight hours8h 0m9h 45m11h 53m14h 5m16h 1m17h 3m16h 30m14h 45m12h 38m10h 28m8h 30m7h 26m

Solar UV radiation in Suwalki, Poland

Suwalki 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 Suwalki UV Index data.

Average daily maximum UV levels by month for Suwalki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124568765321