Climate Insights for Ölgii

, Bayan-Ölgiy Aymag, Mongolia

Hottest
July
20°C peak
Coldest
January
-29°C low
Wettest
July
72mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Ölgii is cold. The average annual temperature is -2°C and approximately 259mm of precipitation falls per year. July is the wettest month, receiving around 72mm of rainfall. Ölgii is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, December, February, when temperatures can drop to -29°C. Snowfall occurs from January to December, with around 53cm accumulating over the season.

Temperature

-30° -20° -10° 10° 20° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -17° Average: -23° Min: -29° Feb Max: -10° Average: -17° Min: -25° Mar Max: -1° Average: -7° Min: -15° Apr Max: 9° Average: 3° Min: -4° May Max: 13° Average: 7° Min: 1° Jun Max: 19° Average: 14° Min: 8° Jul Max: 20° Average: 15° Min: 9° Aug Max: 19° Average: 13° Min: 7° Sep Max: 13° Average: 7° Min: 0° Oct Max: 3° Average: -3° Min: -9° Nov Max: -8° Average: -14° Min: -19° Dec Max: -16° Average: -22° Min: -26°
Max
Average
Min

Ölgii has a wide annual temperature range, spanning 49°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 20°C with a mean of 15°C. January brings the harshest conditions, with lows dropping to -29°C and an average temperature of -23°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 11°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 2mm Snow: 2mm Feb Precipitation: 2mm Snow: 2mm Mar Precipitation: 13mm Snow: 12mm Apr Precipitation: 12mm Snow: 6mm May Precipitation: 28mm Snow: 8mm Jun Precipitation: 49mm Snow: 2mm Jul Precipitation: 72mm Snow: 0mm Aug Precipitation: 43mm Snow: 0mm Sep Precipitation: 21mm Snow: 5mm Oct Precipitation: 9mm Snow: 8mm Nov Precipitation: 6mm Snow: 6mm Dec Precipitation: 2mm Snow: 2mm
Precipitation
Snow

Ölgii is a quite dry location, receiving approximately 259mm of precipitation annually, which averages out to around 22mm per month. The wettest month is July, averaging 72mm of rainfall. June and August also tend to see above-average precipitation. The driest month is January, with just 2mm. That's 70mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 53cm accumulating over the season. March typically sees the most snow at around 12cm.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 2km/h Feb Wind Speed: 2km/h Mar Wind Speed: 2km/h Apr Wind Speed: 3km/h May Wind Speed: 3km/h Jun Wind Speed: 2km/h Jul Wind Speed: 2km/h Aug Wind Speed: 2km/h Sep Wind Speed: 2km/h Oct Wind Speed: 3km/h Nov Wind Speed: 2km/h Dec Wind Speed: 2km/h
Wind Speed

Ölgii is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 3km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

92 days until Autumn

It is currently summer in Ölgii, which began on June 21, 2026. Ölgii is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 20°C, while the coldest stretch bottoms out in January near -29°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from -15 to 13°C. Rainfall is relatively light, with around 52mm over the season and a monthly average of 17mm. Winds are generally light, averaging 3km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 7 to 20°C. Precipitation is moderate at around 164mm for the season, averaging 55mm per month. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -19 to 13°C. Precipitation is minimal, with only around 36mm for the entire season. Expect around 19cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from -29 to -10°C. Precipitation is minimal, with only around 7mm for the entire season. Expect around 7cm of snow accumulation during this period. Winds are generally light, averaging 2km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Monthly Climate Data

The table below shows monthly climate averages for Ölgii based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-29 °C
-17 °C
2 km/h
2 mm
2 cm
Feb
-25 °C
-10 °C
2 km/h
2 mm
2 cm
Mar
-15 °C
-1 °C
2 km/h
13 mm
12 cm
Apr
-4 °C
9 °C
3 km/h
12 mm
6 cm
May
1 °C
13 °C
3 km/h
28 mm
8 cm
Jun Current
8 °C
19 °C
2 km/h
49 mm
2 cm
Jul
9 °C
20 °C
2 km/h
72 mm
0 cm
Aug
7 °C
19 °C
2 km/h
43 mm
0 cm
Sep
0 °C
13 °C
2 km/h
21 mm
5 cm
Oct
-9 °C
3 °C
3 km/h
9 mm
8 cm
Nov
-19 °C
-8 °C
2 km/h
6 mm
6 cm
Dec
-26 °C
-16 °C
2 km/h
2 mm
2 cm
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