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Monthly climate in Sliwice, Poland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sliwice features a oceanic climate (Cfb). Temperatures typically range between 0 °C (33 °F) and 18 °C (65 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 703 mm (27.7 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually. Sliwice enjoys an average of 3346 hours of sunshine throughout the year, and daylight varies from 7 hours 30 minutes to 16 hours 58 minutes per day.

Monthly average temperatures in Sliwice, Poland

The warmest months in Sliwice are June, July and August, with daily mean temperatures ranging from 18 to 18 °C (64 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 1 °C (33 - 35 °F) throughout the day. On average each year, Sliwice experiences 25 days above 25 °C (77.0 °F) and 82 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sliwice. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum11°C
(52°F)		13°C
(56°F)		18°C
(64°F)		26°C
(79°F)		28°C
(82°F)		32°C
(91°F)		34°C
(94°F)		32°C
(89°F)		31°C
(88°F)		22°C
(72°F)		16°C
(62°F)		11°C
(51°F)
Mean maximum9°C
(48°F)		10°C
(51°F)		16°C
(61°F)		21°C
(71°F)		25°C
(78°F)		27°C
(81°F)		30°C
(85°F)		30°C
(87°F)		28°C
(83°F)		21°C
(69°F)		14°C
(58°F)		9°C
(49°F)
Average high2°C
(36°F)		3°C
(38°F)		7°C
(45°F)		12°C
(55°F)		17°C
(62°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		19°C
(66°F)		14°C
(57°F)		7°C
(46°F)		3°C
(38°F)
Daily mean0°C
(33°F)		0°C
(33°F)		3°C
(38°F)		8°C
(46°F)		12°C
(54°F)		18°C
(64°F)		18°C
(65°F)		18°C
(65°F)		14°C
(58°F)		10°C
(50°F)		5°C
(42°F)		1°C
(35°F)
Average low-2°C
(29°F)		-2°C
(28°F)		-1°C
(31°F)		3°C
(37°F)		7°C
(45°F)		12°C
(55°F)		14°C
(57°F)		13°C
(56°F)		10°C
(51°F)		7°C
(44°F)		3°C
(38°F)		-0°C
(31°F)
Mean minimum-11°C
(13°F)		-10°C
(14°F)		-7°C
(20°F)		-3°C
(26°F)		-0°C
(32°F)		6°C
(43°F)		9°C
(49°F)		7°C
(46°F)		4°C
(40°F)		0°C
(33°F)		-3°C
(28°F)		-7°C
(19°F)
Minimum-19°C
(-2°F)		-16°C
(3°F)		-16°C
(4°F)		-5°C
(23°F)		-1°C
(30°F)		4°C
(39°F)		8°C
(46°F)		6°C
(43°F)		2°C
(36°F)		-2°C
(29°F)		-5°C
(23°F)		-15°C
(5°F)

Compare climate in Sliwice with other places

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

Monthly average precipitation in Sliwice, Poland

Sliwice usually has the most precipitation in May, June and July, with an average of 13 rainy days and 89 mm (3.5 inches) of precipitation per month. The driest months in Sliwice are February, April and November. On average, 37 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sliwice. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)42 (1.7)37 (1.4)41 (1.6)38 (1.5)79 (3.1)81 (3.2)106 (4.2)63 (2.5)71 (2.8)62 (2.4)37 (1.5)46 (1.8)
Average precipitation days (≥ 1 mm)1181210141115121012912

Monthly sunshine hours in Sliwice, Poland

The sunniest months in Sliwice are May, June and July, when the sun shines an average of 13 hours 42 minutes a day. Least sunny months in Sliwice: January, November and December receive an average of 3 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sliwice. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours94186263346406432421386299243148116
Mean daily daylight hours8h 3m9h 47m11h 54m14h 3m15h 58m16h 58m16h 26m14h 43m12h 38m10h 29m8h 33m7h 30m

Solar UV radiation in Sliwice, Poland

Sliwice 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 Sliwice UV Index data.

Average daily maximum UV levels by month for Sliwice. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124568865321