nomadseason

Monthly climate in Sayn-Ust, Mongolia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sayn-Ust features a cold semi-arid climate (BSk). Temperatures typically range between -19 °C (-3 °F) and 23 °C (73 °F) through the year, but rarely can drop to -40 °C (-40 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 122 mm (4.8 inches) and receives 21 rainy days on the 1 mm (0.04 inches) threshold annually. Sayn-Ust enjoys an average of 3910 hours of sunshine throughout the year, and daylight varies from 8 hours 31 minutes to 15 hours 51 minutes per day.

Monthly average temperatures in Sayn-Ust, Mongolia

The warmest months in Sayn-Ust are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (67 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -19 to -13 °C (-3 - 9 °F) throughout the day. On average each year, Sayn-Ust experiences 63 days above 25 °C (77.0 °F) and 172 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sayn-Ust. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum-2°C
(29°F)		12°C
(54°F)		20°C
(69°F)		29°C
(84°F)		31°C
(89°F)		35°C
(94°F)		36°C
(97°F)		33°C
(92°F)		32°C
(89°F)		22°C
(72°F)		14°C
(58°F)		3°C
(37°F)
Mean maximum-5°C
(24°F)		4°C
(40°F)		15°C
(59°F)		24°C
(76°F)		30°C
(87°F)		32°C
(90°F)		34°C
(93°F)		32°C
(89°F)		29°C
(84°F)		18°C
(65°F)		12°C
(53°F)		-3°C
(27°F)
Average high-13°C
(9°F)		-6°C
(22°F)		5°C
(42°F)		14°C
(58°F)		21°C
(70°F)		26°C
(80°F)		28°C
(82°F)		25°C
(77°F)		20°C
(68°F)		10°C
(51°F)		-0°C
(31°F)		-12°C
(10°F)
Daily mean-19°C
(-3°F)		-13°C
(9°F)		-1°C
(30°F)		8°C
(47°F)		15°C
(60°F)		21°C
(70°F)		23°C
(73°F)		20°C
(67°F)		14°C
(57°F)		3°C
(38°F)		-7°C
(20°F)		-18°C
(-1°F)
Average low-25°C
(-12°F)		-19°C
(-3°F)		-8°C
(17°F)		1°C
(34°F)		9°C
(48°F)		15°C
(59°F)		17°C
(63°F)		14°C
(57°F)		7°C
(45°F)		-3°C
(27°F)		-12°C
(11°F)		-23°C
(-9°F)
Mean minimum-34°C
(-28°F)		-29°C
(-20°F)		-18°C
(0°F)		-8°C
(18°F)		-2°C
(29°F)		8°C
(48°F)		11°C
(52°F)		7°C
(45°F)		-2°C
(28°F)		-12°C
(11°F)		-23°C
(-9°F)		-32°C
(-26°F)
Minimum-40°C
(-40°F)		-33°C
(-27°F)		-22°C
(-7°F)		-14°C
(8°F)		-7°C
(20°F)		5°C
(41°F)		7°C
(45°F)		4°C
(39°F)		-7°C
(20°F)		-17°C
(1°F)		-26°C
(-15°F)		-40°C
(-40°F)

Compare climate in Sayn-Ust with other places

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

Monthly average precipitation in Sayn-Ust, Mongolia

Sayn-Ust usually has the most precipitation in June, July and August, with an average of 4 rainy days and 27 mm (1.0 inches) of precipitation per month. The driest months in Sayn-Ust are January, February and December. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sayn-Ust. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)2 (0.1)2 (0.1)3 (0.1)5 (0.2)8 (0.3)16 (0.6)25 (1.0)39 (1.5)10 (0.4)6 (0.2)3 (0.1)2 (0.1)
Average precipitation days (≥ 1 mm)010213652100

Monthly sunshine hours in Sayn-Ust, Mongolia

The sunniest months in Sayn-Ust are May, June and July, when the sun shines an average of 12 hours 51 minutes a day. Least sunny months in Sayn-Ust: January, November and December receive an average of 7 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sayn-Ust. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours205270342358390388403369341318268252
Mean daily daylight hours8h 55m10h 15m11h 55m13h 38m15h 6m15h 51m15h 28m14h 10m12h 31m10h 49m9h 18m8h 31m

Solar UV radiation in Sayn-Ust, Mongolia

Sayn-Ust 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 Sayn-Ust UV Index data.

Average daily maximum UV levels by month for Sayn-Ust. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)23571010997522