Cluj-Napoca climate

Name: Cluj-Napoca
Address: RO

Cluj-Napoca is warmest in August, with average highs of 25 °C, and coldest in January, when nights average -5.7 °C. June is the wettest month (106 mm) and January the driest (34 mm). Figures are 1991–2020 climate normals.

Across a full year Cluj-Napoca averages 773 mm of rain, 47 days above 25 °C and 118 days below freezing.

Romania · population 286,598 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 25 °C
Coldest month January -5.7 °C
Driest month January 34 mm
Wettest month June 106 mm
Least cloud August 42 % cloud
Hottest on record August 36 °C
Coldest on record February -26 °C

What to expectCluj-Napoca through the year

Cluj-Napoca has a clear annual cycle: average daily highs run from 1.7 °C in January to 25 °C in August, a swing of 22 °C in mean temperature across the year.

Counted across a normal year, 47 days a year reach 25 °C, 7 of them reach 30 °C, 118 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in August.

Rain is strongly seasonal. June averages 106 mm against 34 mm in January — 3.2 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	1.7 °C	34 mm	65 %
February	4.2 °C	35 mm	66 %
March	9.2 °C	49 mm	61 %
April	15.1 °C	67 mm	58 %
May	19.7 °C	87 mm	58 %
June	23.1 °C	106 mm	54 %
July	24.8 °C	101 mm	48 %
August	25.0 °C	82 mm	42 %
September	20.1 °C	71 mm	52 %
October	14.7 °C	56 mm	55 %
November	8.5 °C	42 mm	62 %
December	2.8 °C	44 mm	66 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	1.7 °C	-5.7 °C	-2.0 °C	13.6 °C	-25.1 °C	0	0	28
February	4.2 °C	-4.7 °C	-0.4 °C	17.1 °C	-26.2 °C	0	0	24
March	9.2 °C	-1.1 °C	4.0 °C	23.3 °C	-18.4 °C	0	0	18
April	15.1 °C	3.7 °C	9.8 °C	27.2 °C	-5.4 °C	0	0	5
May	19.7 °C	8.8 °C	14.8 °C	30.0 °C	-1.4 °C	3	0	0
June	23.1 °C	12.7 °C	18.4 °C	32.5 °C	5.3 °C	9	1	0
July	24.8 °C	14.4 °C	20.1 °C	34.7 °C	5.9 °C	15	2	0
August	25.0 °C	14.4 °C	20.0 °C	36.2 °C	6.8 °C	15	3	0
September	20.1 °C	10.0 °C	15.1 °C	31.4 °C	1.1 °C	4	0	0
October	14.7 °C	5.0 °C	9.7 °C	27.5 °C	-5.6 °C	0	0	4
November	8.5 °C	0.5 °C	4.1 °C	23.2 °C	-21.6 °C	0	0	13
December	2.8 °C	-3.8 °C	-0.7 °C	13.8 °C	-23.0 °C	0	0	25

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	34 mm	8	9.0 h/day	65 %	82 %	11 km/h
February	35 mm	9	10 h/day	66 %	79 %	12 km/h
March	49 mm	10	12 h/day	61 %	73 %	14 km/h
April	67 mm	12	14 h/day	58 %	71 %	14 km/h
May	87 mm	15	15 h/day	58 %	72 %	13 km/h
June	106 mm	15	16 h/day	54 %	74 %	12 km/h
July	101 mm	15	16 h/day	48 %	73 %	12 km/h
August	82 mm	12	14 h/day	42 %	72 %	11 km/h
September	71 mm	10	13 h/day	52 %	75 %	12 km/h
October	56 mm	8	11 h/day	55 %	80 %	11 km/h
November	42 mm	8	9.4 h/day	62 %	84 %	11 km/h
December	44 mm	9	8.6 h/day	66 %	83 %	11 km/h

How Cluj-Napoca compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Cluj-Napoca	25 °C	-5.7 °C	773 mm	47
Târgu Mureş · Romania	26 °C	-5.8 °C	716 mm	57
Oradea · Romania	27 °C	-2.9 °C	734 mm	72
Debrecen · Hungary	27 °C	-3.2 °C	636 mm	76
Braşov · Romania	23 °C	-7.4 °C	768 mm	29

Planning a trip? See the best time to visit Cluj-Napoca.

QuestionsCommon questions about Cluj-Napoca’s climate

When is the best time to visit Cluj-Napoca?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August sit closest to 20 °C on average, August is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Cluj-Napoca get?

In August, the warmest month, daily highs average 25 °C. About 7 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average -5.7 °C in January, the coldest month. A normal year has 118 nights below freezing.

Which month is wettest in Cluj-Napoca?

June, averaging 106 mm over 15 days with rain. The driest month is January with 34 mm. The year as a whole averages 773 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Cluj-Napoca rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 46.767°, 23.600° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.