nomadseason

Monthly climate in Altan-Ovoo, Mongolia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Altan-Ovoo features a subarctic climate (Dwc). Temperatures typically range between -18 °C (0 °F) and 18 °C (64 °F) through the year, but rarely can drop to -37 °C (-34 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 385 mm (15.1 inches) and receives 71 rainy days on the 1 mm (0.04 inches) threshold annually. Altan-Ovoo enjoys an average of 3787 hours of sunshine throughout the year, and daylight varies from 8 hours 30 minutes to 15 hours 52 minutes per day.

Monthly average temperatures in Altan-Ovoo, Mongolia

The warmest months in Altan-Ovoo are June, July and August, with daily mean temperatures ranging from 15 to 18 °C (60 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -18 to -14 °C (0 - 7 °F) throughout the day. On average each year, Altan-Ovoo experiences 25 days above 25 °C (77.0 °F) and 199 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Altan-Ovoo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum1°C
(34°F)		11°C
(53°F)		18°C
(64°F)		27°C
(82°F)		29°C
(85°F)		33°C
(92°F)		34°C
(93°F)		28°C
(82°F)		30°C
(86°F)		23°C
(74°F)		13°C
(56°F)		4°C
(39°F)
Mean maximum-2°C
(28°F)		4°C
(40°F)		13°C
(56°F)		22°C
(72°F)		28°C
(83°F)		28°C
(83°F)		30°C
(85°F)		27°C
(81°F)		25°C
(77°F)		17°C
(64°F)		11°C
(52°F)		0°C
(33°F)
Average high-11°C
(13°F)		-6°C
(21°F)		3°C
(38°F)		11°C
(52°F)		17°C
(64°F)		22°C
(73°F)		23°C
(74°F)		21°C
(69°F)		17°C
(64°F)		8°C
(47°F)		-1°C
(30°F)		-9°C
(17°F)
Daily mean-18°C
(0°F)		-14°C
(7°F)		-4°C
(25°F)		4°C
(39°F)		11°C
(51°F)		16°C
(62°F)		18°C
(64°F)		15°C
(60°F)		10°C
(51°F)		1°C
(33°F)		-8°C
(18°F)		-15°C
(5°F)
Average low-23°C
(-10°F)		-20°C
(-4°F)		-10°C
(13°F)		-3°C
(26°F)		3°C
(38°F)		9°C
(49°F)		12°C
(54°F)		10°C
(51°F)		4°C
(40°F)		-5°C
(23°F)		-13°C
(8°F)		-20°C
(-3°F)
Mean minimum-31°C
(-23°F)		-28°C
(-19°F)		-21°C
(-5°F)		-13°C
(9°F)		-7°C
(19°F)		3°C
(38°F)		8°C
(46°F)		5°C
(42°F)		-4°C
(25°F)		-11°C
(12°F)		-24°C
(-11°F)		-29°C
(-19°F)
Minimum-37°C
(-34°F)		-33°C
(-28°F)		-23°C
(-10°F)		-20°C
(-5°F)		-13°C
(8°F)		-1°C
(31°F)		6°C
(43°F)		3°C
(37°F)		-7°C
(19°F)		-20°C
(-4°F)		-29°C
(-19°F)		-33°C
(-27°F)

Compare climate in Altan-Ovoo with other places

Compare temperature, precipitation, sunshine, UV index in Altan-Ovoo, Mongolia with other places around the world.

Monthly average precipitation in Altan-Ovoo, Mongolia

Altan-Ovoo usually has the most precipitation in June, July and August, with an average of 14 rainy days and 79 mm (3.1 inches) of precipitation per month. The driest months in Altan-Ovoo are January, February and December. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Altan-Ovoo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)4 (0.1)8 (0.3)11 (0.4)22 (0.9)31 (1.2)55 (2.2)96 (3.8)87 (3.4)39 (1.5)18 (0.7)10 (0.4)4 (0.2)
Average precipitation days (≥ 1 mm)113571017156321

Monthly sunshine hours in Altan-Ovoo, Mongolia

The sunniest months in Altan-Ovoo are May, June and July, when the sun shines an average of 12 hours 13 minutes a day. Least sunny months in Altan-Ovoo: January, November and December receive an average of 7 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Altan-Ovoo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours205273333340376367381355319312267257
Mean daily daylight hours8h 55m10h 14m11h 55m13h 38m15h 6m15h 52m15h 29m14h 10m12h 31m10h 49m9h 18m8h 30m

Solar UV radiation in Altan-Ovoo, Mongolia

Altan-Ovoo experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Altan-Ovoo UV Index data.

Average daily maximum UV levels by month for Altan-Ovoo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2357910997622