nomadseason

Monthly climate in Ongi, Mongolia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ongi features a cold desert climate (BWk). Temperatures typically range between -16 °C (3 °F) and 23 °C (73 °F) through the year, but rarely can drop to -33 °C (-27 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 127 mm (5.0 inches) and receives 23 rainy days on the 1 mm (0.04 inches) threshold annually. Ongi enjoys an average of 3754 hours of sunshine throughout the year, and daylight varies from 8 hours 45 minutes to 15 hours 35 minutes per day.

Monthly average temperatures in Ongi, Mongolia

The warmest months in Ongi are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (68 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -16 to -12 °C (3 - 11 °F) throughout the day. On average each year, Ongi experiences 67 days above 25 °C (77.0 °F) and 176 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ongi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum1°C
(34°F)		14°C
(57°F)		20°C
(68°F)		29°C
(85°F)		34°C
(93°F)		37°C
(99°F)		38°C
(101°F)		33°C
(91°F)		31°C
(88°F)		27°C
(81°F)		14°C
(57°F)		4°C
(40°F)
Mean maximum-1°C
(30°F)		6°C
(43°F)		15°C
(59°F)		25°C
(78°F)		31°C
(88°F)		32°C
(90°F)		35°C
(95°F)		32°C
(90°F)		28°C
(83°F)		20°C
(69°F)		13°C
(55°F)		-1°C
(31°F)
Average high-10°C
(15°F)		-5°C
(24°F)		6°C
(43°F)		15°C
(58°F)		21°C
(70°F)		27°C
(80°F)		28°C
(83°F)		25°C
(78°F)		21°C
(71°F)		11°C
(52°F)		0°C
(33°F)		-9°C
(16°F)
Daily mean-16°C
(3°F)		-12°C
(11°F)		-1°C
(30°F)		8°C
(46°F)		14°C
(58°F)		21°C
(70°F)		23°C
(73°F)		20°C
(68°F)		15°C
(59°F)		4°C
(39°F)		-6°C
(21°F)		-15°C
(5°F)
Average low-22°C
(-7°F)		-18°C
(-1°F)		-8°C
(18°F)		1°C
(33°F)		7°C
(45°F)		14°C
(58°F)		17°C
(63°F)		15°C
(59°F)		9°C
(48°F)		-2°C
(28°F)		-11°C
(12°F)		-21°C
(-5°F)
Mean minimum-30°C
(-22°F)		-26°C
(-15°F)		-17°C
(1°F)		-7°C
(19°F)		-3°C
(27°F)		6°C
(43°F)		11°C
(53°F)		9°C
(49°F)		1°C
(33°F)		-10°C
(15°F)		-21°C
(-6°F)		-29°C
(-20°F)
Minimum-33°C
(-27°F)		-30°C
(-22°F)		-20°C
(-4°F)		-11°C
(13°F)		-6°C
(21°F)		2°C
(36°F)		9°C
(48°F)		7°C
(46°F)		-5°C
(24°F)		-13°C
(8°F)		-24°C
(-12°F)		-32°C
(-25°F)

Compare climate in Ongi with other places

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

Monthly average precipitation in Ongi, Mongolia

Ongi usually has the most precipitation in July, August and September, with an average of 4 rainy days and 28 mm (1.1 inches) of precipitation per month. The driest months in Ongi are January, November and December. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ongi. 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)8 (0.3)7 (0.3)7 (0.3)8 (0.3)39 (1.6)32 (1.2)13 (0.5)4 (0.1)2 (0.1)2 (0.1)
Average precipitation days (≥ 1 mm)012113563100

Monthly sunshine hours in Ongi, Mongolia

The sunniest months in Ongi are May, June and July, when the sun shines an average of 11 hours 57 minutes a day. Least sunny months in Ongi: January, November and December receive an average of 8 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ongi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours213272324333366362370357316305268263
Mean daily daylight hours9h 8m10h 22m11h 55m13h 31m14h 53m15h 35m15h 14m14h 1m12h 29m10h 54m9h 30m8h 45m

Solar UV radiation in Ongi, Mongolia

Ongi 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 Ongi UV Index data.

Average daily maximum UV levels by month for Ongi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2358101010107532