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Monthly climate in Brno, Czech Republic

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Brno features a oceanic climate (Cfb). Temperatures typically range between -1 °C (31 °F) and 20 °C (69 °F) through the year, but rarely can drop to -17 °C (2 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 695 mm (27.4 inches) and receives 126 rainy days on the 1 mm (0.04 inches) threshold annually. Brno enjoys an average of 3493 hours of sunshine throughout the year, and daylight varies from 8 hours 14 minutes to 16 hours 9 minutes per day.

Monthly average temperatures in Brno, Czech Republic

The warmest months in Brno are June, July and August, with daily mean temperatures ranging from 19 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 1 °C (31 - 34 °F) throughout the day. On average each year, Brno experiences 41 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 Brno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(54°F)		15°C
(60°F)		21°C
(69°F)		26°C
(80°F)		31°C
(87°F)		32°C
(90°F)		33°C
(92°F)		34°C
(93°F)		30°C
(86°F)		22°C
(72°F)		16°C
(62°F)		10°C
(51°F)
Mean maximum8°C
(47°F)		12°C
(54°F)		18°C
(64°F)		23°C
(73°F)		26°C
(79°F)		29°C
(84°F)		31°C
(88°F)		31°C
(89°F)		27°C
(82°F)		21°C
(71°F)		15°C
(59°F)		9°C
(49°F)
Average high1°C
(35°F)		4°C
(40°F)		9°C
(48°F)		14°C
(57°F)		18°C
(64°F)		24°C
(75°F)		25°C
(77°F)		25°C
(78°F)		19°C
(67°F)		14°C
(58°F)		7°C
(45°F)		3°C
(37°F)
Daily mean-1°C
(31°F)		1°C
(34°F)		4°C
(40°F)		9°C
(49°F)		13°C
(56°F)		19°C
(67°F)		20°C
(67°F)		20°C
(69°F)		15°C
(59°F)		10°C
(50°F)		5°C
(41°F)		1°C
(34°F)
Average low-3°C
(26°F)		-2°C
(29°F)		0°C
(33°F)		4°C
(40°F)		9°C
(48°F)		14°C
(58°F)		14°C
(58°F)		15°C
(60°F)		11°C
(52°F)		7°C
(44°F)		3°C
(38°F)		-1°C
(31°F)
Mean minimum-10°C
(15°F)		-9°C
(17°F)		-6°C
(21°F)		-2°C
(29°F)		3°C
(37°F)		8°C
(46°F)		9°C
(48°F)		9°C
(48°F)		4°C
(40°F)		1°C
(34°F)		-4°C
(24°F)		-6°C
(21°F)
Minimum-17°C
(2°F)		-15°C
(4°F)		-16°C
(4°F)		-6°C
(21°F)		-1°C
(30°F)		6°C
(43°F)		5°C
(41°F)		7°C
(45°F)		-0°C
(31°F)		-2°C
(28°F)		-8°C
(18°F)		-7°C
(20°F)

Compare climate in Brno with other places

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

Monthly average precipitation in Brno, Czech Republic

Brno usually has the most precipitation in May, July and September, with an average of 12 rainy days and 84 mm (3.3 inches) of precipitation per month. The driest months in Brno are January, February and March. On average, 34 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Brno. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)33 (1.3)35 (1.4)35 (1.4)36 (1.4)82 (3.2)79 (3.1)80 (3.1)71 (2.8)91 (3.6)56 (2.2)46 (1.8)51 (2.0)
Average precipitation days (≥ 1 mm)9879151212121010913

Monthly sunshine hours in Brno, Czech Republic

The sunniest months in Brno are June, July and August, when the sun shines an average of 13 hours 21 minutes a day. Least sunny months in Brno: January, November and December receive an average of 5 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Brno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours130210294333380411432385314265176156
Mean daily daylight hours8h 41m10h 8m11h 55m13h 45m15h 20m16h 9m15h 43m14h 18m12h 32m10h 43m9h 5m8h 14m

Solar UV radiation in Brno, Czech Republic

Brno 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, November 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 Brno UV Index data.

Average daily maximum UV levels by month for Brno. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235688876422