Climate in Transylvania

Average daytime and nighttime temperatures

All climate diagrams on this site result from the collected data from five measuring weather stations in Transylvania.
All data correspond to the average monthly values of the last 20 years.

Back to overview: Romania

Transylvania is one of the coldest regions in Romania with an average daily high temperature of only 16 degrees. The climate widely corresponds to Central European weather conditions. It is cold, wet and a few beautiful summer months are also happening during a year. Due to the warmer temperatures, the best time for traveling is from May to September. Less attractive are the cold months from November to March.
Overview: Climate in Romania
Daylengths and sun positions in Romania
Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 9 hours per day, July is the sunniest month in the greater region of Transylvania. In December, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 12 rain days, May offers the most rain days, while September has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 1.1 mm, the least amount of rain falls in February. June, on the other hand, has the most rain.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With only 71% humidity on average, it is quite dry in April. The highest value of 87% is experienced here in January.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is only reached in a few months in Transylvania, although these are always average values.
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity, the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Climate charts for other greater regions in Romania

Map of Transylvania

Most important cities in the greater region »Transylvania«

Alone 4 cities with over 100,000 inhabitants are located here. The greater region has a west-east extension of about 300 km and over 240 km from north to south.

It consists of the nine counties Alba, Bistrita-Nasaud, Brasov, Cluj, Covasna, Harghita, Hunedoara, Mures and Sibiu.

CityPopulationGeo position
Sibiu425,90645° 47' 60"N24° 8' 60"E
Cluj-Napoca303,04746° 46' 0"N23° 36' 0"E
Brasov275,51445° 38' 55"N25° 36' 22"E
Targu-Mures146,86346° 32' 33"N24° 33' 27"E
Bistrita81,31847° 7' 59"N24° 30' 0"E
Hunedoara69,13645° 45' 0"N22° 53' 60"E
Deva67,80245° 52' 60"N22° 53' 60"E
Alba Iulia66,08546° 4' 0"N23° 34' 60"E
Sfântu-Gheorghe60,67745° 52' 0"N25° 46' 60"E
Turda54,58646° 34' 0"N23° 46' 60"E
Medias53,04046° 10' 0"N24° 21' 0"E
Petrosani44,18745° 25' 0"N23° 22' 0"E
Miercurea-Ciuc41,28246° 21' 0"N25° 48' 0"E
Dej38,03347° 8' 60"N23° 52' 0"E
Odorheiu Secuiesc36,53246° 17' 60"N25° 18' 0"E
Sighisoara34,53746° 13' 17"N24° 47' 34"E
Fogarasch34,03445° 51' 0"N24° 58' 0"E
Lupeni30,48845° 21' 37"N23° 14' 18"E
Sacele29,91845° 37' 0"N25° 42' 40"E
Vulcan28,86945° 22' 60"N23° 16' 0"E
Tarnaveni28,63446° 19' 55"N24° 17' 48"E
Aiud28,34146° 18' 36"N23° 43' 17"E
Sebes27,24645° 57' 23"N23° 34' 16"E
Câmpia Turzii26,45746° 32' 60"N23° 52' 60"E
Petrila25,23445° 27' 0"N23° 25' 0"E
Zarnesti24,92645° 33' 39"N25° 19' 4"E
Cugir24,73445° 50' 11"N23° 22' 12"E
Codlea24,18845° 42' 0"N25° 26' 60"E
Gherla23,74147° 1' 60"N23° 55' 0"E
Orastie20,76345° 49' 60"N23° 11' 60"E

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
International tourismThe 40 most popular travel countriesA ranking of international tourism over 40 countries. USA ranks 3rd.
Austria: ClimateClimate and temperature development in AustriaA climate analysis for Austria incl. temperatures, humidity, rain days per month, hours of sunshine, water temperature, rainfalls
Mauritius: cyclonesMost recent cyclones in MauritiusOverview of current and the most severe 20 cyclones of the past years for Mauritius