Mongolia in January

−20 to −30 °C (−4 to −22 °F) and the worst smog of the year in Ulaanbaatar; city museums only.−4 to −22 °F (−20 to −30 °C) and the worst smog of the year in Ulaanbaatar; city museums only.

January is rated avoid. These months rate higher:

• JuneGreatGreen steppe, long days, fewer people than July; the best-value month.
• JulyGreatNaadam (11–15 Jul) fills everything; book cars, flights and camps months ahead. Afternoon rain begins.
• SeptemberGreatGolden larches, clear skies, cold nights; the Gobi is at its most comfortable.
• AugustGoodWarmest and wettest; rivers rise and tracks get muddy. Peak for Khövsgöl.

• Ulaanbaatar and the centre · Ulaanbaatar, Terelj, Kharkhorin, Orkhon valleysmoke haze

  Coldest capital in the world: January averages about −20 °C (−4 °F). Coal and ger-stove smoke make winter air among the worst anywhere Nov–Feb. Summer is 20–28 °C (68–82 °F) by day with afternoon showers in July–August.Coldest capital in the world: January averages about −4 °F (−20 °C). Coal and ger-stove smoke make winter air among the worst anywhere Nov–Feb. Summer is 68–82 °F (20–28 °C) by day with afternoon showers in July–August.

• Gobi · Dalanzadgad, Khongoryn Els, Bayanzag, Yolyn Amcool

  Summer days reach 35–40 °C (95–104 °F), nights stay cool; spring (Apr–May) brings wind and dust storms. September is the easy month.Summer days reach 95–104 °F (35–40 °C), nights stay cool; spring (Apr–May) brings wind and dust storms. September is the easy month.

• Khövsgöl and the north · Mörön, Khatgal, Darkhad valleycool

  Lake Khövsgöl stays frozen until late May or June; summer nights near freezing at 1,650 m. Ice Festival in early March.

• Western Altai · Ölgii, Khovd, Tavan Bogd, Uvscool

  High mountains with snow possible any month; the Golden Eagle Festival in early October is the last good week before the cold.

• Eastern Mongolia: Eastern steppe · Dornod, Sükhbaatar, Khentiicold

  Short summer, June to early September. July and August are warmest and greenest; nights stay cold. Winter is extreme and not a visitor season.

• Gobi: South Gobi (Dalanzadgad) · Ömnögovi and the dune beltcold

  May–June and September are the sweet spots; July–August is hot and busy with domestic tourists. Winter is genuinely cold, not mild.

• Gobi: Northern Gobi edge (Bayanhongor, Sainshand) · Steppe-desert transitioncold

  Slightly cooler and greener than the south; dust storms peak in spring.

• Northern Mongolia: Northern Mongolia · Darkhan to Khövsgölcold

  Short summer: June–August are the workable months, July warmest. Lake Khövsgöl sits at 1,645 m and stays cool; winter is far below freezing.

• Western Mongolia: Altai and Bayan-Ölgii · Ölgii, Tavan Bogd, Tsambagaravcold

  Short summer; July–August are the only reliable trekking months. Early October is Eagle Festival weather — cold, with snow possible.

• Western Mongolia: Great Lakes Depression · Hovd, Uvs, Ulaangomcold

  Drier and lower than the Altai; Uvs Lake basin is one of the coldest places in Mongolia in winter.

• Western Mongolia: Zavkhan · Uliastai, Tosontsengelcold

  Khangai side is wetter and greener; July–August for the lakes and dunes.

• Ulaanbaatar-16 °C (3 °F) / -26 °C (−15 °F), 1 rain days3 °F (-16 °C) / −15 °F (-26 °C), 1 rain days
• Altai-10.5 °C (13 °F) / -24.3 °C (−12 °F), 2 rain days13 °F (-10.5 °C) / −12 °F (-24.3 °C), 2 rain days
• Arvayheer-18.9 °C (−2 °F) / -8.8 °C (16 °F), 1 rain days−2 °F (-18.9 °C) / 16 °F (-8.8 °C), 1 rain days
• Baganuur-17 °C (1 °F) / -34 °C (−29 °F), 3 rain days1 °F (-17 °C) / −29 °F (-34 °C), 3 rain days
• Baruun-Urt-15.7 °C (4 °F) / -25.5 °C (−14 °F), 2 rain days4 °F (-15.7 °C) / −14 °F (-25.5 °C), 2 rain days
• Bayanhongor-23.3 °C (−10 °F) / -11.1 °C (12 °F), 2 rain days−10 °F (-23.3 °C) / 12 °F (-11.1 °C), 2 rain days
• Bulgan-13.2 °C (8 °F) / -26.4 °C (−16 °F), 2 rain days8 °F (-13.2 °C) / −16 °F (-26.4 °C), 2 rain days
• Choibalsan-12 °C (10 °F) / -24 °C (−11 °F), 2 rain days10 °F (-12 °C) / −11 °F (-24 °C), 2 rain days
• Dalanzadgad-19.3 °C (−3 °F) / -7.1 °C (19 °F), 2 rain days−3 °F (-19.3 °C) / 19 °F (-7.1 °C), 2 rain days
• Darkhan-16.9 °C (2 °F) / -30.3 °C (−23 °F), 4 rain days2 °F (-16.9 °C) / −23 °F (-30.3 °C), 4 rain days
• Erdenet-14 °C (7 °F) / -26 °C (−15 °F), 2 rain days7 °F (-14 °C) / −15 °F (-26 °C), 2 rain days
• Hovd-16.1 °C (3 °F) / -27.7 °C (−18 °F), 1 rain days3 °F (-16.1 °C) / −18 °F (-27.7 °C), 1 rain days
• Hutag-Ondor-15 °C (5 °F) / -28 °C (−18 °F), 1 rain days5 °F (-15 °C) / −18 °F (-28 °C), 1 rain days
• Karakorum-14 °C (7 °F) / -27 °C (−17 °F), 1 rain days7 °F (-14 °C) / −17 °F (-27 °C), 1 rain days
• Mandalgovĭ-11 °C (12 °F) / -22 °C (−8 °F), 2 rain days12 °F (-11 °C) / −8 °F (-22 °C), 2 rain days
• Mörön-14.7 °C (6 °F) / -27.3 °C (−17 °F), 1 rain days6 °F (-14.7 °C) / −17 °F (-27.3 °C), 1 rain days
• Ölgii-11 °C (12 °F) / -22 °C (−8 °F), 1 rain days12 °F (-11 °C) / −8 °F (-22 °C), 1 rain days
• Ondorkhaan-15.6 °C (4 °F) / -29.5 °C (−21 °F), 2 rain days4 °F (-15.6 °C) / −21 °F (-29.5 °C), 2 rain days
• Sainshand-22.1 °C (−8 °F) / -11.4 °C (11 °F), 0 rain days−8 °F (-22.1 °C) / 11 °F (-11.4 °C), 0 rain days
• Sühbaatar-14 °C (7 °F) / -30 °C (−22 °F), 2 rain days7 °F (-14 °C) / −22 °F (-30 °C), 2 rain days
• Tsagaannuur-15 °C (5 °F) / -25 °C (−13 °F), 2 rain days5 °F (-15 °C) / −13 °F (-25 °C), 2 rain days
• Tsetserleg-8.3 °C (17 °F) / -20.7 °C (−5 °F), 3 rain days17 °F (-8.3 °C) / −5 °F (-20.7 °C), 3 rain days
• Ulaangom-12 °C (10 °F) / -36 °C (−33 °F), 5 rain days10 °F (-12 °C) / −33 °F (-36 °C), 5 rain days
• Uliastai-25.9 °C (−15 °F) / -10.5 °C (13 °F), 3 rain days−15 °F (-25.9 °C) / 13 °F (-10.5 °C), 3 rain days
• Zamyn-Üüd-12 °C (10 °F) / -22 °C (−8 °F), 2 rain days10 °F (-12 °C) / −8 °F (-22 °C), 2 rain days
• Zuunmod-12 °C (10 °F) / -22 °C (−8 °F), 2 rain days10 °F (-12 °C) / −8 °F (-22 °C), 2 rain days

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

• New Year

  1 Jan

  Offices close for a day; hotels in Ulaanbaatar hold parties.

• Tsagaan Sar (Lunar New Year) big impact

  Feb 2027 (lunar, moves yearly — check)

  Three official days, but many shops and restaurants close for a week; families visit elders, transport out of the city is packed.

Crowds · Mongolia

Low

Prices · Mongolia

Low

Weather, crowds and prices for any two months in Mongolia, side by side.

• Layers: a fleece or light jacket

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Better another month

• Ulaanbaatar

  −20 to −30 °C (−4 to −22 °F), smog; Tsagaan Sar closures some years.−4 to −22 °F (−20 to −30 °C), smog; Tsagaan Sar closures some years.