→ Main article: Geography of Serbia
Note: The description of the geography of Serbia also includes the territory of Kosovo, which is disputed under international law.
Location, relief and geographical division
Serbia stretches across four degrees of latitude on the edge of the subtropics between 46° 11′ N (near Subotica in the northern Serbian province of Vojvodina) and 41° 16′ N near Preševo. From east to west, the Stara Planina near Dimitrovgrad (23° 01′ E). and the Danube near Bezdan (18° 51′ E) form the boundary points. The lowest point is the outlet of the Danube at Prahovo in eastern Serbia, 17 meters above sea level. The highest point is the 2656-meter-high Đeravica in Prokletije (Kosovo) or the 2169-meter-high Midžor on the Bulgarian border.
The territory of Serbia is composed of two types of landscape divided by the Sava-Danube line. North of the Sava and Danube plains lies Vojvodina, a lowland in the Pannonian Plain, where only the gentle rump mountains of Fruška Gora and the Carpathian foothills of the Vršačke Planine stand out somewhat in relief. The former forest steppes of the Danube lowlands are characterized by the hydrological knot of the most important streams of East-Central Europe and by formerly wide floodplain landscapes as well as the aeolian drifting sands (the Deliblatska peščara is known as the "European Sahara") and fertile black earth soils and loess.
South of the Sava and Danube rivers, the country in central Serbia and Kosovo is predominantly mountainous, but presents itself as a topographically diverse and varied area due to the coexistence of mountains, plateaus, basin landscapes and river plains. With the river system of the Morava running practically centrally from south to north, which separates the mountain ranges of the Dinarides, Carpathians and Balkan Mountains into a western and eastern group in the tectonic guideline of the Morava furrow, and the tributaries of the Western and Southern Morava, Ibar and the Drina, the border river to Bosnia, formed as gorges, central Serbia is structured in many ways. In the basins of Metohija and the Blackbird Field and the flanking high mountain ranges such as the highest elevation of Serbia, the Đeravica, the transition to the Pelargonian ("Macedonian") landscape type is found both through the drainage to the Mediterranean (the Blackbird Field drains through the bifurcation of the Nerodimka both to the Black Sea and the Mediterranean) and the interplay of basin landscapes and high mountain horsts.
Waters
Hydrographically, Serbia is mostly located in the catchment area of the Danube, which crosses the country in its middle course over a distance of 588 kilometres. The Danube and its tributaries in the Pannonian lowlands are typical lowland rivers with gentle gradients, numerous oxbows and wide alluvial terraces. Due to the frequent flood risk of Vojvodina, which is located in an important hydrological node, many regulating and hydraulic engineering measures have been created in the form of flood dams, retention basins and also outlet and overflow channels. The most important Danube tributaries here are the Sava (into which the Drina flows), the longest Danube tributary the Tisza, and the Temes. The Danube, Tisza and Sava are also the only navigable waterways in the country.
Among the Danube tributaries of Serbia, the catchment areas of Morava and Drina occupy the largest areas. The longitudinal Morava trench is the main communication artery of the country between the Danube plain and the Mediterranean. Since ancient times, the historically important long-distance road (via militaris) has run through it, which, together with the transversal valleys of the Toplica, Nišava and Zapadna Morava, represents the central natural communication route. Since the Drina Valley, which is also longitudinal, does not represent a continuous communication axis due to its multiple meanders and steep gorge sections, the transversal valleys of the Drina tributaries, on the other hand, could mostly only be integrated into the modern transport infrastructure with the completion of the Belgrade-Bar railway line. Because the Morava Valley geologically also forms a wide tectonic rift whose base consists of crystalline Late Precambrian-Paleozoic rocks, but the Drina Valley runs in Mesozoic sedimentary rocks, which mostly in the form of carbonates allow only steep and narrow canyon valleys, these geological predispositions are also causal for the conspicuous obstacles that the Drina Valley poses for the communicative penetration of the Southeast Dinarides. In eastern Serbia, the Timok catchment is the most important and here its most important transport axis.
The larger mountain rivers of Central Serbia mostly form breakthrough valleys with occasional valley widenings. The middle Drina and Lim valleys are partly stepped by river terraces, on which therefore some larger settlements could be established. Drina and Morava show strongly meandering courses, especially in their lower reaches; these valley sections belong today to the periodically flood-prone landscapes of Serbia, after the Danube and Tisza systems were regulated in the 19th and 20th centuries. Many of the smaller river courses in the mountainous areas, such as the tributaries of the Rasina, are also a constant threat to urban settlements as torrent streams due to episodic flash flood events. Erosion control measures and reforestation efforts in parts of the most vulnerable catchments are particularly intended to minimize the sediment transport volumes that pose the greatest risk during these events.
A significant part of the hydrological systems in Serbia is determined by karst aquifers. These are important in terms of area in the West Serbian-Dinaric limestone mountains and in the Carpatho-Balkan mountain arc of Eastern Serbia (Serbian Carpathians).
Only the extreme southwest of the country is drained by the White Drin to the Adriatic, the extreme southeast via the Pčinja, which flows into the Vardar, to the Aegean.
Today, larger standing waters are mostly found as oxbow lakes on the Danube and Sava; the largest natural lake is Lake Palić with an area of around six square kilometres. Among the artificial reservoirs, Lake Đerdap (Đerdapsko jezero) above the Iron Gate occupies the largest area with 163 square kilometres on the Serbian side (total: 253 km²). Well-known reservoirs are Lake Vlasina on a former high moorland area in the southeast Serbian mountains, Lake Perućac on the Drina and the reservoir in the Uvac canyon.
At 71 meters, Jelovarnik in Kopaonik is the highest waterfall in the country. The largest and longest, but not the deepest gorge in Serbia and in Europe is the Iron Gate.
Climate
Located in the warm temperate climate zone, Serbia is characterized by a temperate continental climate. Precipitation decreases from southwest to northeast, while in particular the precipitation maxima in the southwest shift from early summer to autumn/winter. Thus, a basic feature of the climate of Serbia is established, which is determined by the location to the relatively warm seas (Adriatic, Aegean and Black Sea) and the mountainous nature. The precipitation regime with Mediterranean winter rains disappears with distance from the coast, but can still be observed in the western Serbian mountains and in Kosovo. Only in the more continental Vojvodina the typical precipitation pattern of East-Central Europe with an early summer precipitation maximum, which coincides with the solar maximum, appears.
Due to the chambering of the relief, a variety of microclimatic and macroclimatic modifications occur, which are modified by ventilatory conditions and relief. Mountain climates are found in the higher mountains in the south, west and east of the country.
Winters in Serbia are generally cold and snowy, summers are warm. The coldest month is January, the warmest is July. The lowest temperature recorded so far in Serbia was -38.0 °C (26 January 1954 in Sjenica), the highest was 45.8 °C (16 August 2006 in Paraćin). The average annual temperature in Serbia is 10 °C. The average amount of precipitation is 896 millimeters.
The wind systems are determined by the seasonal pressure gradients. If in winter dry-cold north winds prevail, produced by the Siberian High (Košava, Severac, Moravac); Adriatic lows (in the transitional seasons due to humid-adiabatic foehn effects when the air masses rise from the Adriatic over the Dinarides) bring warm-humid winds from the southwest (Jugozapadni vetar); which are then followed by a short-lived temperature increase in western Serbia and the Sava lowlands. The warm Južni vetar (south wind) is based on the summer etesias, which flows into Serbia from the south across the Morava-Vardar furrow on the front of a Balkan high. While the south wind on the back of the high causes the cooler Meltimi in the Aegean.
Nature reserves and scenic spots
Serbia has five national parks, 20 nature parks and about 590 nature reserves with a total area of 7315.08 square kilometres, which means that more than eight percent of Serbia's area is under nature protection. Serbia has shares in the Green Belt of Europe and is located in the Blue Heart of Europe.
These protected areas, designated for the protection of species and the preservation of the country's biodiversity, also represent supra-regionally important reserves for rare or unique animal and plant species, the unique biotopes as well as landscape elements and landscape forms. Exemplary sites are the steppe dune landscape in the Deliblatska peščara reserve and the primeval mountain forest in the Tara Mountains National Park.
In the Tara Mountains, eleven scattered sites of the pre-glacial relict of the narrow-crowned and "fir-like" (due to its leathery, soft needles) Serbian spruce (Picea omirka (Panč.) Purk.) exist in the National Park. These sites comprise 2760 hectares of special reserve areas, which include Aquilegia nikolicii, a columbine first recognized as a new species in 2013. An unusual relict-endemic deciduous tree, first collected in 1856 by Josif Pančić in the Jastrebica Mountains, is the northern subspecies of the Greek maple (Acer heldreichii ssp. visianii, serb. Planinski javor), which has a distribution centre in Serbia in the subalpine mountain forests. It is the most climate-hardy deciduous tree of the subtropical mountains of the Balkans and, due to the sought-after wood quality, is also traded internationally as an important commercial product in the tonewood segment (even in Italy, violin backs are frequently offered in Balkan maple quality, the English trivial and trade name for Greek maple wood). It is also the most highly quoted raw material for the production of guslen in Serbia, which means that the deposits are subject to strong adjustment.
Among the steppe plants, in the Deliblato Dunes Nature Reserve, in a protected zone covering 34,829 hectares, there are a few locations of the population of the Banat peony (Paeonia officinalis ssp. banatica (Rochel) Soó), consisting of about 40 individual plants, which at the same time constitutes the world population of the forest-steppe plant. Another peony, at the same time the national flower of Serbia - the Byzantine peony - grows in the heat-loving oak forests of eastern Serbia and Kosovo. In folk tradition, it is associated with the blood of the Blackbird heroes and is therefore called the Blackbird Peony (Kosovski božur). Recently, a stand of about 2000 plants of this deep red flowering species, which is also used as a medicinal plant, was discovered on 100 ha at Maljan in Kučaj planina.
The protected landscape areas such as the Suva Planina Special Nature Reserve are home to, for example, Tertiary tropical relics such as the Serbian rock plate or the endemic Pančić columbine. These species, adapted to rocky sites in limestone, are considered typical representatives of the paleoendemic Balkan flora. These protected areas and reserves are also refuges for many other species in the Red Data Book of Serbia.
The five national parks correspond to the category II of the IUCN.
| National Park | accepted in the IUCN list | Opština (Municipalities) | Area (km²) |
| National Park Đerdap | 1974 | Golubac, Majdanpek, Kladovo | 636,8 |
| Kopaonik National Park | 1981 | Raška, Brus | 118 |
| Tara National Park | 1981 | Bajina Bašta | 190 |
| Šara/Sharr National Park | 1986 | Štrpce/Shtërpca, Kačanik/Kaçanik, Prizren, Suva Reka/Suhareka | 390 |
| Fruška Gora | 1960 | Novi Sad, Sremski Karlovci, Beočin, Bačka Palanka, Šid, Sremska Mitrovica, Irig, Inđija | 253,93 |
Eight places in Serbia have been listed in the Ramsar Convention for the Conservation of Wetlands.
| Area | added to the Ramsar Convention | Opština (Municipalities) | Area (km²) |
| Gornje Podunavlje | 2007 | Apatin | 224,8 |
| Labudovo okno | 2006 | Bela Crkva | 37,33 |
| Lake Ludašer | 1977 | Subotica | 5,93 |
| Obedska bara | 1977 | Pećinci | 175,01 |
| Peštersko polje | 2006 | Sjenica | 34,55 |
| Slano Kopovo | 2004 | Novi Bečej | 9,76 |
| Carska bara | 1996 | Zrenjanin | 17,67 |
| Lake Vlasina | 2007 | Surdulica | 32,09 |
Among the scenic sights are numerous geomorphological phenomena. Among them:
- Đavolja varoš (Engl.: "Devil's City") Earth pyramids in southern Serbia (near Leskovac).
- Meander and gorge of the river Uvac (Meandri i klisura reke Uvac) in southwest Serbia (Sandžak).
- Meander and gorge of the Temska River in southeastern Serbia (near Niš).
- Rock of the Babin zub peak in the Stara Planina in southeastern Serbia.
- Rock Stol in eastern Serbia (near Bor).
- Ušaćka pećina (Ušać Cave) in southwestern Serbia.
