Climate and monthly weather forecast
Arvaikheer, Mongolia

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The climate of Arvaikheer

According to the Köppen climate classification, Arvaikheer, a city in Mongolia, is dominated by a Mid-latitude steppe climate, also known as BSk. This geographical location exhibits climatic conditions characterized by an array of severe temperatures and precipitation changes throughout the year.

Throughout the year, the temperature in Arvaikheer exhibits a broad spectrum, damping from the chilling lows of -20°C (-4°F) during January to reaching the pleasant highs of 21.4°C (70.5°F) in July. Rainfall varies significantly from one month to another, hinting at the fluctuations observed in this continental climate. January and February account for minimal precipitation, averaging around 1mm (0.04") and 1mm (0.04") respectively, while July with its peak rainfall of 60mm (2.36") represents the city’s humid summer.

A distinct pattern can be pointed out in the number of rainfall days. Starting from a mere 0.2 days in January, it escalates quite significantly to reach a peak of 11 days in July, only to descend back to 0.3 days by December. The city also possesses varied daylight hours, hovering from a low of 8.7 hours in December to a high of 15.7 hours in June. The weather parameters of Arvaikheer, therefore, highlight a region with extreme weather conditions due to its mid-latitude steppe climate.

The best time to visit Arvaikheer

The optimal timeframe for visiting Arvaikheer lies from May to September, as the weather during these months is relatively warm and manageable. With the temperature ranging from a high of 16.4°C (61.5°F) to 21.4°C (70.5°F) and a low of 2.6°C (36.7°F) to 10°C (50°F), this period allows for comfortable exploration. More so, the increase in daylight hours, reaching its peak of 15.7 hours during June, promises longer days and more time for outdoor activities.

The worst time to visit Arvaikheer

Travelling to Arvaikheer from November to March is less advisable due to the harsh winter conditions. During these months, the city experiences its lowest temperatures, dropping from -1°C (30.2°F) to -6.7°C (19.9°F) in the day and even harsher conditions at night between -12.6°C (9.3°F) to -20°C (-4°F). Along with fewer daylight hours, reaching a low of 8.7 hours in December, the freezing environment and short days make travel less enjoyable.

Spring weather in Arvaikheer

Spring in Arvaikheer, from March to May, is a period of rising temperatures and increasing rainfall. The city observes a temperature increase, from the mere 0.1°C (32.2°F) in March to a more comfortable 16.4°C (61.5°F) by May. While rainfall experiences a similar increase, starting at 4mm (0.16") in March and escalating to 15mm (0.59") by May, signalling the arrival of the wetter months to follow.

Summer weather in Arvaikheer

Summers, from June to August, bring warmer temperatures between 20.1°C (68.2°F) and 21.4°C (70.5°F), while the nighttime temperature ranges between 7.7°C (45.9°F) to 10°C (50°F). Simultaneously, rainfall is at its peak for the year, reaching a high of 60mm (2.36") in July. With daylight extending up to 15.7 hours per day during this season, summer is the most vibrant season in Arvaikheer.

Autumn weather in Arvaikheer

Autumn, from September to November, sees a rapid drop in temperature and daylight hours in Arvaikheer. A high temperature of 15.2°C (59.4°F) in September plummets to -1°C (30.2°F) in November while the daylight hours decrease from 12.6 hours to 9.5 hours. Rainfall also diminishes during this season, going down from 20mm (0.79") in September to a scarce 3mm (0.12") in November.

Winter weather in Arvaikheer

Winter in Arvaikheer lasts from December to February, featuring the harshest weather of the year. With daytime temperatures staggering between -8.5°C (16.7°F) and -6.7°C (19.9°F) and temperatures plunging as low as -20°C (-4°F) at night. Moreover, rainfall is at its most minimal throughout the season, not exceeding 1mm (0.04"). Daylight hours also minimize, reaching a low point of 8.7 hours in December. Winter in Arvaikheer thus presents extreme conditions, throwing a blanket of frost over the city.

Weather in January

During the month of January, Arvaikheer, Mongolia endures its most frigid temperatures, enduring nighttime lows of -20°C (-4°F) and barely reaching a maximum of -8.5°C (16.7°F) during the day. The weather appears to be in a deep freeze throughout the month, often accompanying gusts of icy winds. Weather in January »

Weather in February

A mild variation in the weather pattern is observed as Arvaikheer transitions from January to February. The cold grip of winter persists, but the city witnesses a slightly comforting increase in mean temperatures. No substantial changes in the rain activity occur, making February yet another dry, winter month. Weather in February »

Weather in March

By the time Arvaikheer enters March, the city undergoes a significant leap in temperature, although the weather remains in the negative spectrum during the night. With the precipitation chart noticing a rise, rain activity is more prominent as compared to the previous two months. Weather in March »

Weather in April

The progression from March to April marks the departure from freezing temperatures, with Arvaikheer experiencing considerable positive temperatures. The improvement in weather conditions is noticeable, with the city finally shedding off the chill of winter. Weather in April »

Weather in May

May proves to be noticeably warmer, driving away the last remnants of winter in Arvaikheer. The jump in day and night temperatures can be prominently observed, providing pleasant weather throughout the month. Increased rainfall influences the flourishing of vegetation, turning the city into a green oasis. Weather in May »

Weather in June

Arvaikheer gradually embraces summer as it steps into June, witnessing a rise in temperature to a comfortable 21°C (69.8°F) during the day. This month indeed marks the true onset of the summer season, with its longer, sun-soaked days and mild nights. Weather in June »

Weather in July

July turns out to be the warmest period of the year in Arvaikheer, as the temperature reaches its peak, with nights at a pleasant 10°C (50°F). The increase in heat is accompanied by the highest rainfall of the year, resulting in a humid climate. Weather in July »

Weather in August

August brings a slight dip in temperature compared to July, while maintaining a similar rainfall pattern in Arvaikheer. Although the days remain long, a gradual reduction in daylight hours signifies the slow approach of fall. The decrease in heat doesn't take away the joy of outdoor recreational activities as the weather stays warm and mild throughout the month. Weather in August »

Weather in September

The transition from summertime to autumn is significant as Arvaikheer enters September. The heat starts to recede, paving the way for cooler days and nights. The city witnesses a sharp fall in rainfall after the peak observed in the previous two months. Weather in September »

Weather in October

Cooler winds blow across Arvaikheer in October, bringing down the temperature further. This month proves to be one of the dryer ones, with negligible rainfall expected. The daylight hours continue to shorten, setting the stage for the upcoming cold season. Weather in October »

Weather in November

As November arrives in Arvaikheer, the city begins to brace itself for the frigid winter season. The temperature drops dramatically from the previous month, with the mercury dipping back into the negatives. The rainfall figures dwindle even more, making November an exceedingly dry month. Weather in November »

Weather in December

The arrival of December marks the return of the deep freeze in Arvaikheer with daytime temperatures barely rising above -6.7°C (19.9°F). The bitterly cold conditions become standard, with residents experiencing short days and long, chilly nights. Weather in December »
Updated: Feb 6, 2024 | Published by: Weather Atlas | About Us

Frequently asked questions

What month is the coldest in Arvaikheer?

The coldest month in Arvaikheer, Mongolia, is January, with an average high-temperature of -8.5°C (16.7°F) and an average low-temperature of -20°C (-4°F).

What is the driest month in Arvaikheer?

January is the month with the least rainfall. Rain falls for 0.2 days and accumulates 1mm (0.04") of precipitation.

How many days does it rain in Arvaikheer?

In Arvaikheer, during the entire year, the rain falls for 38.7 days and collects up to 208mm (8.19") of precipitation.

When are the longest days in Arvaikheer?

June has the longest days of the year, with an average of 15h and 42min of daylight.

What month is the hottest in Arvaikheer?

The warmest time of the year in Arvaikheer is July, with temperatures averaging a high of 21.4°C (70.5°F) and a low of 10°C (50°F).

What is the wettest month in Arvaikheer?

The month with the most rainfall is July, when the rain falls for 11 days and typically aggregates up to 60mm (2.36") of precipitation.

What is the month with the shortest days in Arvaikheer?

The month with the shortest days in Arvaikheer, Mongolia, is December, with an average of 8h and 42min of daylight.

Is there Daylight Saving Time (DST) in Arvaikheer?

Arvaikheer, Mongolia, does not utilize Daylight Saving Time (DST). +08 timezone is used over the entire year.

Average temperature
Arvaikheer, Mongolia

Average temperature - Arvaikheer, Mongolia

The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (-8.5°C).

The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is January (-20°C).

Average rainfall
Arvaikheer, Mongolia

Average rainfall - Arvaikheer, Mongolia

The wettest month (with the highest rainfall) is July (60.1mm).
The driest month (with the least rainfall) is January (0.8mm).

Average rainfall days
Arvaikheer, Mongolia

Average rainfall days - Arvaikheer, Mongolia

The month with the highest number of rainy days is July (11 days).
The month with the least rainy days is January (0.2 days).

Average daylight
Arvaikheer, Mongolia

Average daylight - Arvaikheer, Mongolia

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

Arvaikheer, Mongolia

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