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Monthly climate in Slany, Czech Republic

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Slany features a oceanic climate (Cfb). Temperatures typically range between 1 °C (34 °F) and 20 °C (69 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 616 mm (24.2 inches) and receives 120 rainy days on the 1 mm (0.04 inches) threshold annually. Slany enjoys an average of 3433 hours of sunshine throughout the year, and daylight varies from 8 hours 5 minutes to 16 hours 20 minutes per day.

Monthly average temperatures in Slany, Czech Republic

The warmest months in Slany are June, July and August, with daily mean temperatures ranging from 20 to 20 °C (67 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (34 - 36 °F) throughout the day. On average each year, Slany experiences 47 days above 25 °C (77.0 °F) and 69 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Slany. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(56°F)		17°C
(63°F)		22°C
(72°F)		26°C
(80°F)		32°C
(89°F)		38°C
(100°F)		38°C
(100°F)		35°C
(96°F)		31°C
(89°F)		24°C
(76°F)		18°C
(65°F)		12°C
(54°F)
Mean maximum10°C
(51°F)		14°C
(57°F)		19°C
(67°F)		24°C
(75°F)		28°C
(82°F)		31°C
(88°F)		33°C
(91°F)		33°C
(92°F)		29°C
(85°F)		23°C
(74°F)		15°C
(59°F)		11°C
(51°F)
Average high3°C
(38°F)		5°C
(42°F)		9°C
(49°F)		15°C
(58°F)		19°C
(66°F)		25°C
(77°F)		25°C
(78°F)		26°C
(78°F)		20°C
(69°F)		15°C
(59°F)		8°C
(46°F)		4°C
(40°F)
Daily mean1°C
(34°F)		2°C
(36°F)		5°C
(41°F)		9°C
(49°F)		14°C
(57°F)		20°C
(67°F)		20°C
(69°F)		20°C
(69°F)		15°C
(60°F)		10°C
(51°F)		5°C
(41°F)		2°C
(36°F)
Average low-1°C
(30°F)		-1°C
(30°F)		1°C
(33°F)		4°C
(39°F)		8°C
(47°F)		14°C
(57°F)		15°C
(59°F)		15°C
(59°F)		11°C
(51°F)		7°C
(44°F)		3°C
(37°F)		0°C
(33°F)
Mean minimum-7°C
(20°F)		-9°C
(16°F)		-6°C
(22°F)		-2°C
(29°F)		2°C
(36°F)		7°C
(45°F)		9°C
(49°F)		8°C
(48°F)		4°C
(39°F)		1°C
(34°F)		-3°C
(26°F)		-5°C
(24°F)
Minimum-14°C
(8°F)		-19°C
(-2°F)		-13°C
(9°F)		-7°C
(20°F)		-0°C
(32°F)		4°C
(39°F)		7°C
(45°F)		6°C
(44°F)		1°C
(34°F)		-1°C
(30°F)		-7°C
(20°F)		-8°C
(18°F)

Compare climate in Slany with other places

Compare temperature, precipitation, sunshine, UV index in Slany, Czech Republic with other places around the world.

Monthly average precipitation in Slany, Czech Republic

Slany usually has the most precipitation in May, June and August, with an average of 12 rainy days and 73 mm (2.9 inches) of precipitation per month. The driest months in Slany are January, April and November. On average, 34 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Slany. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)34 (1.3)41 (1.6)42 (1.7)30 (1.2)74 (2.9)71 (2.8)59 (2.3)76 (3.0)56 (2.2)52 (2.1)37 (1.4)45 (1.8)
Average precipitation days (≥ 1 mm)991081311111299910

Monthly sunshine hours in Slany, Czech Republic

The sunniest months in Slany are May, June and July, when the sun shines an average of 13 hours 15 minutes a day. Least sunny months in Slany: January, November and December receive an average of 4 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Slany. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours118203279341387405427382314257176138
Mean daily daylight hours8h 33m10h 3m11h 55m13h 49m15h 28m16h 20m15h 52m14h 23m12h 33m10h 40m8h 59m8h 5m

Solar UV radiation in Slany, Czech Republic

Slany experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 8 - 8, which corresponds to the 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 Slany UV Index data.

Average daily maximum UV levels by month for Slany. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)224588876421