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Monthly climate in Slawno, Poland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Slawno features a oceanic climate (Cfb). Temperatures typically range between -1 °C (31 °F) and 20 °C (68 °F) through the year, but rarely can drop to -20 °C (-4 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 712 mm (28.0 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. Slawno enjoys an average of 3365 hours of sunshine throughout the year, and daylight varies from 7 hours 53 minutes to 16 hours 33 minutes per day.

Monthly average temperatures in Slawno, Poland

The warmest months in Slawno are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (67 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 1 °C (31 - 35 °F) throughout the day. On average each year, Slawno experiences 42 days above 25 °C (77.0 °F) and 81 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Slawno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum11°C
(52°F)		18°C
(64°F)		20°C
(69°F)		27°C
(81°F)		29°C
(84°F)		36°C
(97°F)		36°C
(97°F)		36°C
(96°F)		31°C
(88°F)		24°C
(75°F)		19°C
(66°F)		14°C
(57°F)
Mean maximum9°C
(48°F)		12°C
(55°F)		18°C
(64°F)		24°C
(76°F)		27°C
(80°F)		30°C
(86°F)		32°C
(90°F)		32°C
(90°F)		29°C
(85°F)		23°C
(73°F)		16°C
(61°F)		10°C
(51°F)
Average high2°C
(35°F)		4°C
(39°F)		8°C
(47°F)		14°C
(57°F)		18°C
(65°F)		24°C
(76°F)		25°C
(76°F)		25°C
(77°F)		20°C
(68°F)		15°C
(59°F)		8°C
(47°F)		3°C
(38°F)
Daily mean-1°C
(31°F)		1°C
(33°F)		4°C
(39°F)		9°C
(48°F)		14°C
(57°F)		19°C
(67°F)		20°C
(68°F)		20°C
(68°F)		15°C
(59°F)		10°C
(51°F)		5°C
(42°F)		1°C
(35°F)
Average low-3°C
(27°F)		-2°C
(28°F)		-1°C
(31°F)		3°C
(38°F)		8°C
(47°F)		14°C
(57°F)		14°C
(58°F)		14°C
(58°F)		10°C
(51°F)		7°C
(44°F)		3°C
(38°F)		-1°C
(31°F)
Mean minimum-12°C
(11°F)		-10°C
(15°F)		-8°C
(18°F)		-3°C
(27°F)		1°C
(35°F)		6°C
(44°F)		9°C
(49°F)		8°C
(47°F)		3°C
(38°F)		0°C
(32°F)		-3°C
(26°F)		-9°C
(17°F)
Minimum-20°C
(-4°F)		-15°C
(6°F)		-16°C
(3°F)		-5°C
(23°F)		-3°C
(27°F)		5°C
(42°F)		8°C
(46°F)		7°C
(44°F)		1°C
(34°F)		-2°C
(29°F)		-7°C
(20°F)		-17°C
(2°F)

Compare climate in Slawno with other places

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

Monthly average precipitation in Slawno, Poland

Slawno usually has the most precipitation in July, August and September, with an average of 12 rainy days and 83 mm (3.3 inches) of precipitation per month. The driest months in Slawno are January, March and November. On average, 37 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Slawno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)40 (1.6)46 (1.8)40 (1.6)44 (1.7)75 (3.0)73 (2.9)84 (3.3)85 (3.3)81 (3.2)64 (2.5)33 (1.3)49 (1.9)
Average precipitation days (≥ 1 mm)1011119131015121110811

Monthly sunshine hours in Slawno, Poland

The sunniest months in Slawno are June, July and August, when the sun shines an average of 13 hours 21 minutes a day. Least sunny months in Slawno: January, November and December receive an average of 4 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Slawno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours111189271333384417423387300247173126
Mean daily daylight hours8h 23m9h 58m11h 54m13h 54m15h 38m16h 33m16h 4m14h 30m12h 35m10h 36m8h 50m7h 53m

Solar UV radiation in Slawno, Poland

Slawno experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 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 Slawno UV Index data.

Average daily maximum UV levels by month for Slawno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124578876321