The Hottest and Coldest Places on Earth: Records, Science, and Survival
Photo: mali maeder / Pexels
On July 10, 1913, a thermometer at Furnace Creek Ranch in Death Valley, California registered 56.7°C (134°F) — the highest air temperature ever accepted by the World Meteorological Organization as a global record. Seventy years and 11 days later, on the opposite side of the planet, scientists at Soviet station Vostok deep in East Antarctica read -89.2°C (-128.6°F) off their instruments, the lowest surface air temperature ever recorded. The gap between those two numbers — 145.9 degrees Celsius — encompasses nearly the entire thermal range within which life on Earth's surface is possible. Understanding why these specific places hold these records reveals how solar energy, topography, atmospheric pressure, and ocean distance combine to push temperature toward its limits.
How Temperature Records Are Validated
Not every thermometer reading becomes a world record. The World Meteorological Organization (WMO) maintains the official Archive of Weather and Climate Extremes, which subjects candidate records to formal scientific review before acceptance.
World Meteorological Organization (WMO) — the United Nations specialized agency for meteorology, climatology, and related Earth sciences, responsible for maintaining official global weather records and coordinating the standards by which those records are measured and verified.
WMO validation examines: the quality and calibration history of the measuring instrument; the siting of the weather station (a thermometer in direct sunlight or over asphalt runs artificially hot); the continuity of the observational record at the station; and whether the measurement is physically plausible given atmospheric conditions recorded simultaneously at nearby stations.
The WMO distinguishes between surface air temperature (measured in a standardized instrument shelter, 1.25–2.0 meters above the ground, shielded from direct solar radiation) and land surface temperature (the actual temperature of the ground surface itself, measured by satellites or ground-level sensors). These two measures can differ dramatically: a bare desert surface in direct sun can reach 70–80°C while the air temperature at instrument height is "only" 50°C.
This distinction matters enormously for record claims. Iran's Lut Desert has recorded land surface temperatures above 70°C via satellite thermal imaging — but this is not an air temperature record and cannot be compared directly to the Death Valley figure.
Source: World Meteorological Organization (2023) — WMO Archive of Weather and Climate Extremes, methodology for evaluating and accepting regional and global temperature records. wmo.int
The World's Most Extreme Temperature Records
| Record | Value | Location | Date | Measurement Type |
|---|---|---|---|---|
| Highest air temperature (global) | 56.7°C (134°F) | Furnace Creek, Death Valley, CA, USA | July 10, 1913 | Surface air (WMO) |
| Highest air temp (most recent credible) | 54.4°C (129.9°F) | Furnace Creek, Death Valley | Aug 16–17, 2020 | Surface air (NWS) |
| Highest surface temperature (satellite) | ~80.8°C (177.4°F) | Lut Desert, Iran | 2005 | Land surface (NASA MODIS) |
| Lowest air temperature (global) | -89.2°C (-128.6°F) | Vostok Station, Antarctica | July 21, 1983 | Surface air (WMO) |
| Lowest satellite-derived temp | -98°C (-144.4°F) | East Antarctic Plateau | 2010–2013 | Surface (USGS/Landsat) |
| Coldest permanently inhabited place | -67.7°C (-89.9°F) | Oymyakon, Sakha Republic, Russia | Feb 6, 1933 | Surface air |
| Hottest average annual temperature | ~34.4°C (93.9°F) mean | Dallol, Ethiopia | 1960–1966 | Annual mean surface air |
Source: World Meteorological Organization — Global extremes table, updated 2023. Death Valley 1913 record currently maintained pending ongoing scientific review of archival data quality.
Source: Mildrexler, D.J. et al. (2011), "A global comparison between station air temperatures and MODIS land surface temperatures reveals the cooling role of forests," Journal of Geophysical Research: Biogeosciences — source for satellite-derived land surface temperature maxima in the Lut Desert.
Death Valley: Why Heat Concentrates Here
Death Valley sits in the Mojave Desert of eastern California, the lowest, driest, and hottest place in North America. Its floor at Badwater Basin lies 86 meters (282 feet) below sea level — the lowest point on the North American continent. That topographic position is central to why it reaches extreme temperatures.
Heat pools in Death Valley by a mechanism called the basin effect. During summer days, solar radiation heats the dark rock and alluvial fan surfaces on the valley floor. The hot air rises but cannot escape the valley easily: it is bounded by mountains on all sides reaching 2,000–3,000 meters (6,500–9,800 feet). The rising air cools as it ascends, sinks back down along the valley walls (subsidence), is compressed adiabatically as it drops to lower altitude — and therefore arrives at the valley floor warmer than when it left it. This convective cycling amplifies the heat gain rather than releasing it.
Adiabatic compression — the increase in temperature a parcel of air experiences when it sinks to lower altitude and is compressed by the greater atmospheric pressure there, without exchanging heat with its surroundings. Air sinking into Death Valley from the surrounding mountains arrives pre-heated by this compression, effectively delivering additional thermal energy to an already hot valley floor.
Death Valley also has extremely low humidity (humidity as low as 0–5% is common in summer), which removes the latent heat buffer that moisture provides. In humid climates, water vapor in the air absorbs much of the incoming solar energy before it reaches the surface; in Death Valley's hyperarid atmosphere, almost all solar radiation hits rock and soil directly.
The 56.7°C (134°F) reading from 1913 has faced scrutiny. Researchers including Christopher Burt and Jan Null have examined the historical record and noted irregularities in the 1913 station data, suggesting the reading may reflect instrumentation error, observer error, or station siting problems. The WMO has reviewed this argument and continues to accept the record, but acknowledged that if new evidence emerges it will re-examine it. A 2021 paper in Oxford Open Climate Change modeled atmospheric conditions on July 10, 1913 and found the 56.7°C reading to be at the high but physically plausible end of what the observed weather pattern could have produced.
Source: National Park Service, Death Valley National Park — official station data and description of the valley's topographic heat-trapping mechanism. nps.gov
Source: Burt, C. / Weather Underground (2016) — "An Investigation of Death Valley's 134°F World Temperature Record" — detailed analysis of the 1913 station record and methodological concerns about its validity.
The Lut Desert: Hottest Surface on the Planet
Iran's Dasht-e Lut (Lut Desert) holds the record for highest land surface temperature measured by satellite. In 2005, NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) recorded a surface temperature of approximately 70.7°C (159.3°F). Subsequent surveys, including analysis of USGS Landsat data, have found values approaching 80°C (176°F) on the bare, dark sand surface.
These figures are not air temperatures. The bare dark gravel of the Lut absorbs nearly all incoming solar radiation and re-emits it as heat, driving the immediate surface to temperatures far above what the overlying air reaches. An unshaded metal surface left in these conditions would cause burns on contact within seconds.
The Lut Desert is one of the driest places on Earth — classified as hyperarid — and its interior is so inhospitable that it was long considered completely lifeless. Surveys over the last two decades have found microorganisms in the soil, but the surface itself remains essentially sterile during peak summer conditions.
Source: Mildrexler, D.J. et al. (2006), "Testing a MODIS Global Disturbance Index across North and South America," Remote Sensing of Environment — establishes methodology for land surface temperature measurement using MODIS satellite data, foundational for the Lut Desert record.
Vostok Station: Earth's Cold Pole
Vostok Station is a Russian Antarctic research facility located at 78.5° south latitude on the East Antarctic ice sheet, at an elevation of 3,488 meters (11,444 feet) above sea level. On July 21, 1983, its standard thermometer measured -89.2°C (-128.6°F) — the lowest surface air temperature in recorded history, accepted by the WMO.
Three factors converge at Vostok to produce extreme cold. First, latitude: at 78.5° south, Vostok experiences polar night — months of continuous darkness in Antarctic winter when no solar energy reaches the surface at all. Second, elevation: at 3,488 meters, the atmosphere above is thinner and holds less heat. The temperature drop with altitude (approximately -6.5°C per 1,000 meters in the free atmosphere) means the surface radiates to a very cold sky. Third, distance from ocean: the East Antarctic Plateau is among the most remote continental interiors on Earth, insulated from the moderating influence of ocean thermal mass by thousands of kilometers of ice and rock.
At -89.2°C, several unusual physical phenomena occur. The sound of voice becomes muted — cold air is denser and the speed of sound changes. Exhaled breath freezes instantly into ice crystals before it disperses. Exposed metal becomes brittle enough to shatter. Diesel fuel gels. Standard batteries fail immediately. The field researchers who have worked at Vostok (a station continuously occupied since 1957) operate under strict protocols: no one goes outside without a buddy, no one stays outside longer than necessary, and any mechanical failure requiring outdoor work becomes a potentially fatal event.
Below Vostok Station, under approximately 3.7 km of ice, lies Lake Vostok — the largest subglacial lake in Antarctica, with a surface area of roughly 12,500 km² (about the size of Lake Ontario). It has been isolated from the atmosphere for approximately 15–25 million years. The lake water, kept liquid by geothermal heat from below and the insulating pressure of the ice above, was sampled for the first time in 2012. Bacterial DNA was found.
Source: Turner, J. et al. (2009), "Record low surface air temperature at Vostok Station, Antarctica," Journal of Geophysical Research: Atmospheres, Vol. 114 — peer-reviewed confirmation of the July 21, 1983 measurement at Vostok Station, analysis of contributing meteorological conditions. Available via British Antarctic Survey.
East Antarctica's Satellite Cold Record: -98°C
In 2018, researchers at the University of Colorado Boulder published an analysis of USGS Landsat and Terra/Aqua satellite data that identified surface temperatures approaching -98°C (-144.4°F) on the East Antarctic Plateau during winter nights between 2010 and 2013. These represent the coldest natural temperatures ever measured on Earth's surface — colder than the -89.2°C Vostok air record by nearly 9 degrees.
The distinction is again crucial: these are land surface temperatures measured by satellite infrared sensor, not air temperatures measured by a standard thermometer in a shelter. The mechanism is intense radiative cooling during polar night: the ice surface radiates heat to the clear sky unimpeded, and in the absence of any incoming solar radiation and with extremely dry air (dry air does not trap outgoing infrared as efficiently as humid air), the surface temperature can fall far below the air temperature above it.
At -98°C, the researchers believe the surface approaches a theoretical lower limit: below this temperature, water vapor sublimating from the ice surface would form a thin insulating layer that slows further cooling. The -98°C figure may therefore represent not just the coldest place but the physical limit of how cold a natural surface on Earth can get.
Source: Scambos, T. et al. (2018), "Ultralow surface temperatures in East Antarctica from satellite thermal infrared mapping: The coldest places on Earth," Geophysical Research Letters, Vol. 45 — documents satellite-measured land surface temperatures approaching -98°C on the East Antarctic Plateau.
Oymyakon: The Coldest Town People Actually Live In
Oymyakon is a village of roughly 500 people in the Sakha Republic of northeastern Russia, located in a river valley at approximately 750 meters above sea level, at 63.5° north latitude. On February 6, 1933, the weather station there recorded -67.7°C (-89.9°F) — the lowest temperature ever officially recorded at a permanently inhabited settlement.
Oymyakon's extreme cold is a product of the same factors at work in Antarctica, scaled to a mid-latitude context. The surrounding mountains (reaching 1,000–1,100 meters) trap cold dense air in the valley during winter inversions. The latitude ensures extended periods of low solar angles in winter. The extreme continental position — Oymyakon is more than 5,000 km from any ocean — removes all maritime temperature buffering.
The thermal inversion that plagues Oymyakon is the same mechanism, inverted, that makes Death Valley hot in summer. Cold air, being denser than warm air, sinks and pools in valley floors. In summer, the sinking air compresses and warms; in winter, the air pooling in the valley simply loses heat to the sky and grows progressively colder as long as clear skies allow radiative cooling to continue.
Life in Oymyakon at record-breaking temperatures is characterized by creative adaptation. Cars are kept running around the clock because they may not restart if allowed to cool. Ground is permanently frozen (the permafrost extends 1,500 meters deep here), meaning pipes cannot be buried — infrastructure runs above ground, insulated. The ground is too frozen for crop agriculture; the local economy is based on reindeer herding and horse breeding. The Yakutian horse, the local breed, can find forage by pawing through snow and survives temperatures that would kill most domestic horse breeds.
Nearby Verkhoyansk — another Siberian settlement — also claims the title of coldest inhabited town, having recorded -67.8°C in February 1892, slightly colder than Oymyakon's 1933 record. The contest between the two towns is unresolved: both hold plausible legitimate records, and neither measurement has been invalidated.
Source: Wikipedia / Russian Meteorological Service — Oymyakon temperature record of -67.7°C on February 6, 1933, from station data held by the Russian state meteorological agency (Roshydromet).
What People Get Wrong About Temperature Records
The most common error is conflating surface temperature and air temperature as though they measure the same thing. They do not. A satellite recording 70°C in the Lut Desert and a WMO station recording 56.7°C in Death Valley are measuring fundamentally different quantities — one the temperature of sunbaked rock, the other the temperature of air in a shaded shelter 1.5 meters above the ground. Both are real; they are not directly comparable.
A second error: assuming Death Valley is always the hottest place. Several stations in Kuwait, Iraq, Pakistan, and northwestern Australia regularly exceed 50°C air temperature in summer. The Dasht-e Kavir (Great Salt Desert) in Iran and the Sahara's interior routinely approach or exceed Death Valley's typical summer maxima of 47–50°C. Death Valley holds the record — not the average.
Third: the belief that Oymyakon and Antarctica experience cold of the same fundamental kind. Antarctica's -89°C record occurred at a high-altitude ice sheet in permanent polar night — conditions unreachable by most living organisms. Oymyakon's -67.7°C occurred in a valley where people, horses, and reindeer live continuously. These are the same quantity (air temperature) but represent radically different ecological situations.
For context on life at the other extreme of Earth's temperature range — the organisms that survive in the deep cold ocean trenches — see our article on the deepest places in the ocean.
Frequently Asked Questions
Q: What is the hottest temperature ever recorded on Earth?
A: The highest surface air temperature accepted by the World Meteorological Organization is 56.7°C (134°F), recorded at Furnace Creek Ranch, Death Valley, California, on July 10, 1913. This record has been questioned by some meteorologists on data quality grounds, but the WMO continues to accept it pending any new evidence of instrument error.
Q: What is the coldest natural temperature ever measured on Earth?
A: For surface air temperature: -89.2°C (-128.6°F) at Vostok Station, Antarctica, on July 21, 1983. For satellite-measured land surface temperature: approximately -98°C (-144.4°F) on the East Antarctic Plateau during winter nights, documented by Scambos et al. (2018). The two measures are methodologically different and not directly comparable.
Q: How does the WMO validate temperature records?
A: The WMO reviews the instrument's calibration history, the station's siting (exposure to sun, wind, artificial heat sources), the observational record's continuity, and whether the reading is physically consistent with conditions at nearby stations recorded simultaneously. The process involves a formal committee of climate scientists who review submitted evidence and may request additional data before accepting or rejecting a record.
Q: Is Oymyakon or Verkhoyansk the coldest inhabited place on Earth?
A: Both claims are legitimate. Verkhoyansk recorded -67.8°C in February 1892; Oymyakon recorded -67.7°C in February 1933. Verkhoyansk's record is 0.1°C colder. Both are permanently inhabited; both records are considered authentic. Guinness World Records has recognized both at various times. No consensus exists to unambiguously separate the two.
Q: Why does Death Valley get so hot?
A: Three factors combine: the valley sits 86 meters below sea level, trapping hot air in a basin; dark rocky surfaces absorb solar radiation efficiently; and the extreme low humidity (near 0% in summer) removes the moisture buffer that moderates heat in other climates. Hot air subsides from surrounding mountains, compressing adiabatically as it descends into the valley floor and adding further heat.
Q: What is the hottest planet surface temperature in the solar system?
A: Venus, at approximately 465°C (869°F) mean surface temperature — hotter than Mercury despite being farther from the Sun, because Venus's dense CO₂ atmosphere creates an extreme runaway greenhouse effect. Earth's 56.7°C record is roughly 1% of Venus's permanent surface temperature.
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SciHub101 is an independent science and technology publication founded and edited by Buğra Sözeri, a software engineer and app developer based in Türkiye. AI tools assist with drafting and research. Source documentation in the existing archive is uneven, and articles are being reviewed and corrected. The Editorial Team byline identifies editorial responsibility; it does not certify specialist or independent human review. Where we compare products, anything built by our own team is labelled as such — see the editorial guidelines and About page for how corrections and disclosures work.
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