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Monthly climate in Bayan-Ovoo, Mongolia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Bayan-Ovoo features a cold desert climate (BWk). Temperatures typically range between -11 °C (12 °F) and 24 °C (75 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 66 mm (2.6 inches) and receives 8 rainy days on the 1 mm (0.04 inches) threshold annually. Bayan-Ovoo enjoys an average of 3882 hours of sunshine throughout the year, and daylight varies from 8 hours 51 minutes to 15 hours 29 minutes per day.

Monthly average temperatures in Bayan-Ovoo, Mongolia

The warmest months in Bayan-Ovoo are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (71 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -11 to -7 °C (12 - 20 °F) throughout the day. On average each year, Bayan-Ovoo experiences 72 days above 25 °C (77.0 °F) and 145 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bayan-Ovoo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum1°C
(33°F)		11°C
(52°F)		19°C
(66°F)		29°C
(85°F)		30°C
(87°F)		33°C
(92°F)		35°C
(95°F)		33°C
(91°F)		32°C
(91°F)		24°C
(76°F)		14°C
(58°F)		5°C
(41°F)
Mean maximum-2°C
(29°F)		6°C
(43°F)		14°C
(58°F)		25°C
(76°F)		29°C
(85°F)		31°C
(88°F)		34°C
(93°F)		32°C
(90°F)		28°C
(83°F)		19°C
(67°F)		11°C
(53°F)		1°C
(35°F)
Average high-7°C
(20°F)		-2°C
(29°F)		7°C
(45°F)		15°C
(60°F)		21°C
(70°F)		26°C
(80°F)		29°C
(84°F)		27°C
(80°F)		21°C
(71°F)		11°C
(53°F)		2°C
(36°F)		-5°C
(23°F)
Daily mean-11°C
(12°F)		-7°C
(20°F)		2°C
(36°F)		10°C
(50°F)		16°C
(61°F)		21°C
(71°F)		24°C
(75°F)		22°C
(71°F)		16°C
(61°F)		6°C
(43°F)		-3°C
(28°F)		-10°C
(15°F)
Average low-14°C
(6°F)		-11°C
(12°F)		-3°C
(27°F)		5°C
(40°F)		10°C
(51°F)		16°C
(61°F)		18°C
(66°F)		17°C
(62°F)		11°C
(52°F)		1°C
(35°F)		-6°C
(21°F)		-13°C
(8°F)
Mean minimum-21°C
(-6°F)		-17°C
(1°F)		-11°C
(13°F)		-4°C
(24°F)		2°C
(35°F)		10°C
(51°F)		13°C
(56°F)		11°C
(52°F)		2°C
(36°F)		-5°C
(23°F)		-15°C
(5°F)		-19°C
(-2°F)
Minimum-25°C
(-12°F)		-21°C
(-6°F)		-13°C
(9°F)		-9°C
(17°F)		-3°C
(27°F)		7°C
(45°F)		11°C
(52°F)		9°C
(48°F)		-1°C
(30°F)		-8°C
(18°F)		-17°C
(2°F)		-24°C
(-11°F)

Compare climate in Bayan-Ovoo with other places

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

Monthly average precipitation in Bayan-Ovoo, Mongolia

Bayan-Ovoo usually has the most precipitation in May, July and August, with an average of 2 rainy days and 14 mm (0.6 inches) of precipitation per month. The driest months in Bayan-Ovoo are March, October and December. On average, 1 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bayan-Ovoo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)2 (0.1)3 (0.1)2 (0.1)3 (0.1)9 (0.3)7 (0.3)13 (0.5)21 (0.8)2 (0.1)2 (0.1)2 (0.1)1 (0.0)
Average precipitation days (≥ 1 mm)010021220000

Monthly sunshine hours in Bayan-Ovoo, Mongolia

The sunniest months in Bayan-Ovoo are May, June and July, when the sun shines an average of 12 hours 29 minutes a day. Least sunny months in Bayan-Ovoo: January, February and December receive an average of 8 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bayan-Ovoo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours211270339349377378393374341317271258
Mean daily daylight hours9h 13m10h 25m11h 56m13h 29m14h 48m15h 29m15h 8m13h 58m12h 29m10h 56m9h 34m8h 51m

Solar UV radiation in Bayan-Ovoo, Mongolia

Bayan-Ovoo experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Bayan-Ovoo UV Index data.

Average daily maximum UV levels by month for Bayan-Ovoo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2368101010107532