Climate · Mongolia

Ulaanbaatar

Warm and damp from May to September; cold and dry from December to February.

Typical weather, averaged over 30 years47.9°N1,290 m above the sea
  1. Jan12°-11°-16°-27°Rain on fewer than one day a week.
  2. Feb18°-8°-12°-24°Rain on fewer than one day a week.
  3. Mar35°2°5°-15°Rain on about one day a week.
  4. Apr49°9°23°-5°Rain on about one day a week.
  5. May63°17°34°1°Rain on about two days a week.
  6. Jun74°23°46°8°Rain on about two days a week.
  7. Jul78°26°53°12°Rain on about three days a week.
  8. Aug75°24°49°9°Rain on about three days a week.
  9. Sep65°18°37°3°Rain on about two days a week.
  10. Oct49°9°25°-4°Rain on about one day a week.
  11. Nov31°-1°8°-13°Rain on about one day a week.
  12. Dec16°-9°-8°-22°Rain on fewer than one day a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The warm season runs from May to September, with highs near 71°F and nights near 44°F. From December to February, highs stay near or below freezing, around 15°F. The rain comes from June to September, on about two days a week. November to March is the driest stretch, with rain or snow on fewer than one day a week. Daylight runs from about 8½ hours in December to 16 hours in June.The warm season runs from May to September, with highs near 22°C and nights near 7°C. From December to February, highs stay near or below freezing, around -9°C. The rain comes from June to September, on about two days a week. November to March is the driest stretch, with rain or snow on fewer than one day a week. Daylight runs from about 8½ hours in December to 16 hours in June.

Where Ulaanbaatar sits

Asia/Ulaanbaatar

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
47.9°Nnorthern hemisphere
Above the sea
1,290 mupland
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
8:37 AM8:00 AM7:08 AM6:05 AM5:15 AM4:52 AM5:08 AM5:46 AM6:28 AM7:10 AM7:58 AM8:35 AMsets 5:25 PMsets 6:13 PMsets 6:56 PMsets 7:40 PMsets 8:22 PMsets 8:52 PMsets 8:48 PMsets 8:08 PMsets 7:08 PMsets 6:06 PMsets 5:17 PMsets 5:00 PM
Nearest of ours
Bulgan511 km south-west

The land around Ulaanbaatar, shaded by its typical high in January, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in February, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in March, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in April, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in May, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in June, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in July, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in August, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in September, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in October, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in November, the planning map's own layer.The land around Ulaanbaatar, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 12°F in January to 78°F in July.Highs from -11°C in January to 26°C in July.

Chance of a wet day

Wettest in August (37% of days), driest in January and February (3%).

Cloud cover

Cloud stays near 46% of the sky all year.

Daylight

From 8h 27m in December to 15h 57m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C

Ulaanbaatar, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryBelow freezing
-16°-27°12°-11°
no days49%8h 52m
FebruaryBelow freezing
-12°-24°18°-8°
no days45%10h 09m
March
5°-15°35°2°
1 day44%11h 49m
April
23°-5°49°9°
1 day46%13h 36m
MayWarm season
34°1°63°17°
2 days48%15h 09m
JuneWarm seasonAt its best
46°8°74°23°
2 days50%15h 57m
JulyWarm seasonAt its best
53°12°78°26°
3 days48%15h 34m
AugustWarm seasonAt its best
49°9°75°24°
3 days44%14h 13m
SeptemberWarm season
37°3°65°18°
2 days40%12h 28m
October
25°-4°49°9°
1 day41%10h 41m
November
8°-13°31°-1°
1 day45%9h 11m
DecemberBelow freezing
-8°-22°16°-9°
no days49%8h 27m

When is the best time to visit Ulaanbaatar?


The best months are June to August: highs near 76°F, nights near 49°F, and rain on about three days a week. Winter sports depend on snow, which these pages don't measure.The best months are June to August: highs near 24°C, nights near 9°C, and rain on about three days a week. Winter sports depend on snow, which these pages don't measure.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions


What is the warmest month in Ulaanbaatar?

July, with highs near 78°F and lows near 53°F. The coolest is January, with highs near 12°F.July, with highs near 26°C and lows near 12°C. The coolest is January, with highs near -11°C.

When does it rain most in Ulaanbaatar?

August, with rain on about three days a week. January and February are the driest, with rain on fewer than one day a week.

How long are the days in Ulaanbaatar?

From about 8½ hours in December to 16 hours in June.

When are the skies clearest in Ulaanbaatar?

September, when cloud covers about 40% of the sky on average. June is the cloudiest, at about 50%.

Places with a year like Ulaanbaatar's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Ulaanbaatar's through the year, one place a country. “Six months apart”: their winter is Ulaanbaatar's summer.

Elsewhere in Mongolia

All of Mongolia

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Ulaanbaatar. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,290 m) against the climate model's (1,502 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,290 m) against the climate model's (1,502 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.