Where to Go for Great Weather
Mongolia · Regional climate

Bayan-Ölgiiwhen to go

Regional slice of Mongolia with its own temperature profile. Best months here: Jan · Feb · Mar.

Range
-19–17 °C
Compare
−8.0°C vs. Mongolia mean
Country
Mongolia
TZ
Asia/Ulaanbaatar
Region match
Acceptable

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12-month climate · Bayan-Ölgii

How the year moves in Bayan-Ölgii

Ten years of ERA5, aggregated over Bayan-Ölgii itself rather than over Mongolia as a whole — the same series the month-by-month scores below are built from.

Temperature°C
Temperature · 12-month climatologyBayan-Ölgii, Mongolia. Average daytime high by month in °C. Lowest in January (-18.7), highest in July (16.8). Monthly means: -18.7, -14.2, -6.4, 1.8, 8.4, 15.2, 16.8, 15.2, 9.0, -1.4, -11.4, -18.3.
View data table
MonthAverage daytime high (°C)
January-18.7
February-14.2
March-6.4
April1.8
May8.4
June15.2
July16.8
August15.2
September9.0
October-1.4
November-11.4
December-18.3
Rainfallmm
Rainfall · 12-month climatologyBayan-Ölgii, Mongolia. Rainfall by month in mm. Lowest in January (8), highest in July (66). Monthly means: 8, 9, 20, 21, 36, 51, 66, 52, 35, 22, 21, 9.
View data table
MonthRainfall (mm)
January8
February9
March20
April21
May36
June51
July66
August52
September35
October22
November21
December9
Sunshinehr / day
Sunshine · 12-month climatologyBayan-Ölgii, Mongolia. Sunshine hours by month in hr / day. Lowest in December (5.8), highest in April (11.4). Monthly means: 6.7, 8.7, 10.1, 11.4, 10.9, 10.1, 9.1, 9.0, 8.7, 7.9, 6.6, 5.8.
View data table
MonthSunshine hours (hr / day)
January6.7
February8.7
March10.1
April11.4
May10.9
June10.1
July9.1
August9.0
September8.7
October7.9
November6.6
December5.8
What’s open · year round

Things to do in Bayan-Ölgii

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

Month by month · Bayan-Ölgii

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Other regions · Mongolia

Nearby and comparable

Safety · 4 governments

What the governments say about Mongolia

Combined advisory · most-cautious-wins
Exercise increased caution
Highest level across 4 governments · Advisory last changed
See breakdown by country
AU

Exercise normal precautions

Changed Checked www.smartraveller.gov.au
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
US

Exercise normal precautions

Changed Checked travel.state.gov
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