Об және Ни́жневартовск ауданының су режимі мен климаты

The main watercourse of the city is the Ob river, from the mouth of the Svitlaya Bayou to the Lokosovskaya Bayou. Within the Nizhnevartovsky district, the section of the middle Ob river is 134 km long and the floodplain is 18 to 20 km wide. By the nature of the water regime, it belongs to the type of rivers with spring and summer floods and floods in the warm period of the year. The duration of the flood is on average 60–130 days. The appearance of ice formations on rivers is typical for the second half of October—early November. The average duration of ice build up is 180–200 days. In hydrographic terms, the taiga zone of the Ob river differs sharply from the forest steppe zone adjacent to it from the South; this difference is primarily due to a change in the ratio of water balance elements. With a noticeable increase in precipitation, with a decrease in their losses to evaporation, surface runoff increases sharply here. In 2015, the largest flooding of territories adjacent to Nizhnevartovsk in thirty years occurred, including numerous dachas and gardening associations. The reason for the dynamics of water level rise was the climatic features of the spring period.

Nizhnevartovsk is located in the continental climate zone. The climate is characterized by a long winter, long snow cover (200–210 days), short transitional seasons, late spring and early autumn frosts, short frost free period (100–110 days), and short summer (10–14 weeks). Winter is characterized by significant inter day variability in air temperature, the average value of which is 5 °C. The annual precipitation rate is of the continental type. During the cold period, about 20% of the annual amount falls. Most of them fall in the first months of winter. The maximum annual precipitation falls in the summer months of the year — from June to August. In some years, the amount of precipitation may deviate significantly from the norm. The annual minimum precipitation is observed in February. Snow cover is formed in October—early November, and its descent is observed in late April early may. As the entire district is equated to the regions of the Far North. Average annual air temperature: −0.9 °C
Relative humidity: 73.7%
Average wind speed: 3.1 m/s

In the Nizhnevartovsky district, as well as throughout the entire territory of the Middle Ob region, cedar (people in Russia called "cedar" some species of pine, in this case – Siberian pine) forests are indigenous, and birch and aspen trees that have arisen in their place are derived. The basis of the district's forests is made up of three species: pine, cedar and birch. Among the forest formations, the area is dominated by pine trees. Cedar forests cover less than a quarter of the forested area. A third of the area is occupied by small leaved forests. Pine trees are found on sandy and sandy loam strongly podzolic soils and are confined to elevated terrain areas. The most common types are lichen and cranberry pines. For cedar trees, a good development of the grass shrub layer is characteristic, in which the dominant value belongs to forest shrubs (blueberries, cranberries, watermelons, marsh bagulnik) and taiga smallgrass (Linnea Severnaya, kislitsa, maynik dvulistnogo). Shrubs are represented by Siberian mountain ash, individual specimens. Green mosses are always present in these forests.

Nizhnevartovsk was founded in 1909 (or 1905), built as a service point for merchant steamships operating on the Ob River to acquire stocks of firewood to power their boats. The new village had five homes with a population of eleven people, and was named Nizhnevartovskoye (Нижневартовское), in reference to the Vartovskaya River, a tributary of the Ob located downstream. In early 1924, Nizhnevartovsky Selsoviet was formed. Nizhnevartovsk remained a relatively small settlement until the 1960s when the Soviet authorities began widespread prospecting for the petroleum industry in the Western Siberia region, discovering the Samotlor oil field, one of the largest oil fields in the world, beneath the nearby Lake Samoltor to the north of Nizhnevartovsk. The discovery saw its rapid development and growth from a large village to a boomtown, Komsomol volunteers were brought in from across the country to construct the city, and Nizhnevartovsk's population skyrocketed from 2300 people in 1959 to 15,663 in 1970. Town status was granted to Nizhnevartovsk on March 9, 1972.

Within the framework of administrative divisions, Nizhnevartovsk serves as the administrative center of Nizhnevartovsky District, even though it is not a part of it. As an administrative division, it is incorporated separately as the city of okrug significance of Nizhnevartovsk—an administrative unit with the status equal to that of the districts.

Nizhnevartovsk is the center of the West Siberian oil producing region and one of the wealthiest cities in the country.

Nizhnevartovsk features prominently in the opening of Tom Clancy's novel Red Storm Rising, which details a hypothetical war between NATO and the Warsaw Pact. In the novel, Nizhnevartovsk is depicted as a significant center for petroleum in the Soviet Union until it is sabotaged, causing a major economic crisis which triggers World War III.