Climate in Primorsko-notranjska

Average daytime and nighttime temperatures

All climatic diagrams on this site result from the collected data from two measuring weather stations in Primorsko-notranjska.
All data correspond to the average monthly values of the last 20 years.
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Primorsko-notranjska is the coldest region in Slovenia with an average high temperature of only 16°C. The climate is very changeable and offers varied seasons with deep winters and warm summers. It rarely gets really warm here. 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.
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Daylengths and sun positions in Slovenia
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Hours of sunshine per daySunshine hours per day in Primorsko-notranjska
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 region of Primorsko-notranjska. In December the sun shines the shortest.
Rainy days per monthRainy days per month in Primorsko-notranjska
A rainy day is a day on which at least an amount of 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 rainy days, May offers the most number of rainy days, and in January the least.
Precipitation in mm/dayPrecipitation in Primorsko-notranjska
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 1.7 mm, the least rain falls in January. September, on the other hand, has the most rain.
Relative humidity in %Relative humidity in Primorsko-notranjska
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture of the physically possible is actually contained in the air. At high humidity, the person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% gives as pleasant. With only 73% humidity on average, it is quite dry in May. The highest value of 91% is experienced here in December.
Absolute humidity in g/m³Absolute humidity in Primorsko-notranjska
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 Primorsko-notranjska, although these are always average values.
Humidex in °CHumidex in Primorsko-notranjska
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.
Map of Primorsko-notranjska

Most important cities in the region »Primorsko-notranjska«

Only very small villages are located here. The two biggest are Postojna and Ilirska Bistrica. The region has a west-east extension of about 110 km and over 80 km from north to south.
It consists of the seven municipalities Bloke, Cerknica, Ilirska Bistrica, Loška Dolina, Pivka, Poljcane and Postojna.

CityPopulationGeo position
Postojna9,18345° 46' 28"N14° 12' 55"E
Ilirska Bistrica4,55345° 34' 44"N14° 18' 23"E
Cerknica3,92845° 47' 35"N14° 21' 45"E
Rakek2,15245° 48' 48"N14° 18' 40"E
Pivka2,08845° 40' 59"N14° 11' 45"E
Poljcane1,15346° 18' 43"N15° 34' 45"E
Leskova Dolina53945° 37' 17"N14° 27' 38"E
Nova Vas29945° 46' 18"N14° 30' 21"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.
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