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Monthly climate in Cluj-Napoca, Romania

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Cluj-Napoca features a humid continental climate (Dfb). Temperatures typically range between -3 °C (28 °F) and 20 °C (68 °F) through the year, but rarely can drop to -21 °C (-6 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 808 mm (31.8 inches) and receives 144 rainy days on the 1 mm (0.04 inches) threshold annually. Cluj-Napoca enjoys an average of 3670 hours of sunshine throughout the year, and daylight varies from 8 hours 35 minutes to 15 hours 47 minutes per day.

Monthly average temperatures in Cluj-Napoca, Romania

The warmest months in Cluj-Napoca are June, July and August, with daily mean temperatures ranging from 18 to 20 °C (65 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to 1 °C (28 - 34 °F) throughout the day. On average each year, Cluj-Napoca experiences 44 days above 25 °C (77.0 °F) and 105 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Cluj-Napoca. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(53°F)		16°C
(61°F)		22°C
(72°F)		26°C
(80°F)		27°C
(81°F)		32°C
(90°F)		32°C
(89°F)		35°C
(95°F)		29°C
(85°F)		24°C
(76°F)		22°C
(73°F)		12°C
(54°F)
Mean maximum7°C
(45°F)		12°C
(54°F)		18°C
(64°F)		23°C
(73°F)		25°C
(78°F)		28°C
(82°F)		30°C
(86°F)		32°C
(89°F)		28°C
(83°F)		23°C
(73°F)		17°C
(63°F)		10°C
(50°F)
Average high1°C
(33°F)		5°C
(41°F)		9°C
(48°F)		15°C
(59°F)		19°C
(66°F)		23°C
(74°F)		24°C
(76°F)		26°C
(79°F)		21°C
(70°F)		16°C
(61°F)		9°C
(48°F)		3°C
(38°F)
Daily mean-3°C
(28°F)		1°C
(34°F)		4°C
(39°F)		9°C
(48°F)		14°C
(57°F)		18°C
(65°F)		19°C
(67°F)		20°C
(68°F)		15°C
(59°F)		10°C
(50°F)		5°C
(41°F)		0°C
(33°F)
Average low-6°C
(22°F)		-3°C
(27°F)		-1°C
(30°F)		3°C
(38°F)		8°C
(47°F)		13°C
(56°F)		13°C
(57°F)		14°C
(57°F)		9°C
(49°F)		5°C
(41°F)		2°C
(35°F)		-2°C
(29°F)
Mean minimum-15°C
(6°F)		-11°C
(13°F)		-10°C
(15°F)		-3°C
(26°F)		2°C
(35°F)		8°C
(46°F)		8°C
(47°F)		9°C
(48°F)		2°C
(37°F)		-1°C
(30°F)		-5°C
(23°F)		-10°C
(14°F)
Minimum-21°C
(-6°F)		-14°C
(8°F)		-19°C
(-1°F)		-7°C
(20°F)		-1°C
(30°F)		6°C
(42°F)		7°C
(45°F)		6°C
(43°F)		-1°C
(31°F)		-4°C
(25°F)		-8°C
(19°F)		-13°C
(9°F)

Compare climate in Cluj-Napoca with other places

Compare temperature, precipitation, sunshine, UV index in Cluj-Napoca, Romania with other places around the world.

Monthly average precipitation in Cluj-Napoca, Romania

Cluj-Napoca usually has the most precipitation in May, June and July, with an average of 17 rainy days and 108 mm (4.3 inches) of precipitation per month. The driest months in Cluj-Napoca are January, February and November. On average, 41 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cluj-Napoca. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)34 (1.3)49 (1.9)56 (2.2)52 (2.0)115 (4.5)110 (4.3)100 (3.9)74 (2.9)59 (2.3)53 (2.1)41 (1.6)65 (2.6)
Average precipitation days (≥ 1 mm)91111121918161187913

Monthly sunshine hours in Cluj-Napoca, Romania

The sunniest months in Cluj-Napoca are June, July and August, when the sun shines an average of 13 hours 29 minutes a day. Least sunny months in Cluj-Napoca: January, February and December receive an average of 6 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cluj-Napoca. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours159214290347392410426403338287221179
Mean daily daylight hours8h 59m10h 17m11h 56m13h 36m15h 3m15h 47m15h 24m14h 7m12h 30m10h 50m9h 21m8h 35m

Solar UV radiation in Cluj-Napoca, Romania

Cluj-Napoca experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Cluj-Napoca UV Index data.

Average daily maximum UV levels by month for Cluj-Napoca. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689987432