Last updated: August 28, 2025
In January, Altai, Mongolia, experiences a chilling climate characterized by an average temperature of -17°C (2°F), where the mercury can plummet to a minimum of -35°C (-30°F). The maximum temperature hovers around -2°C (29°F), creating a stark winter landscape. Notably, the month records 0 days of precipitation, yielding a mere 3 mm (0.1 in) of moisture, while humidity remains high at 98%, contributing to the biting cold. This combination of severe cold and dry conditions shapes the distinct character of Altai's January weather, making it a unique experience for those venturing into this remote corner of Mongolia.
In January, Altai, Mongolia, experiences its coldest temperatures of the year, with minimums plunging to -35°C (-30°F) and average temperatures hovering around -17°C (2°F). The sharp chill continues to define this month, as the maximum rarely exceeds -2°C (29°F). However, as winter transitions into early spring, the following months notably demonstrate a gradual warming trend. By February, the minimum drops slightly to -27°C (-17°F), and averages improve to -13°C (10°F), paving the way for a March that sees even more significant increases, where temperatures climb closer to freezing. This pattern of rising temperatures continues through spring and into summer, culminating in July's warmest days, where maximums can reach 31°C (87°F), showcasing a stark contrast to January's frigid grip. The cyclical nature of these temperatures paints a clear picture of Altai's harsh winters giving way to milder seasons, embodying the dramatic seasonal shifts characteristic of this stunning Mongolian landscape.
In January, Altai, Mongolia experiences a notably dry start to the year, with a mere 3 mm (0.1 in) of precipitation and typically no rainfall days. This trend of low precipitation continues into February, increasing slightly to 6 mm with just a single day of rain. As spring approaches, rainfall becomes more frequent, with March seeing a modest 10 mm over 3 days. The trend is clear: as the warmer months draw closer, both the amount of rainfall and the frequency of rainy days begin to rise significantly. By July, Altai reaches its wettest point, accumulating 42 mm (1.6 in) across 9 days. This gradual increase culminates in August, where almost double that amount—66 mm (2.6 in)—is recorded, demonstrating the peak of the region's wet season. Following this high, the precipitation starts to decline again, illustrating the yearly cycle of moisture that defines Mongolia's climatic patterns.
In January, Altai, Mongolia, experiences an impressive humidity level of 98%, creating a winter landscape that feels both frigid and moist. This peak in humidity marks the height of the winter season, as the cold air holds substantial moisture. As the month advances into February and March, humidity begins to gradually decrease to 94% and then to 88%, signaling the slow transition towards spring. By April, moisture levels drop significantly to 74%, followed by a more substantial decline to 50% by May, indicative of the warming temperatures. The trend continues through the summer months, where humidity stabilizes around 48-54%. However, as autumn unfolds, humidity begins to climb again, reaching 67% by October before plunging in late fall, culminating in another high of 96% in December. This cyclical shift underscores the dramatic seasonal changes that characterize Altai's climate, where winter embraces high humidity while the summer months favor drier conditions.
In January, the UV Index in Altai, Mongolia, is at a low 2, translating to a burn time of 45 minutes—ideal for outdoor activities without much concern for sun exposure. As the months progress, February sees a slight increase to a moderate 3 (30 minutes burn time), before March jumps to 7, elevating sun safety considerations to a high category with just 25 minutes before risk sets in. The peak UV Index hits a staggering 10 from May through August—each month categorized as very high, necessitating serious sun protection with burn times dropping to just 15 minutes. As autumn approaches, September returns to a high index of 7 for 25 minutes, followed by a moderate 5 in October and a return to low levels in December. This seasonal progression highlights the dramatic shifts in UV exposure, underscoring the importance of adapting sun safety measures throughout the year in Altai. For more details, visit Altai UV Index.
UV Risk Categories
January in Altai, Mongolia, shines with 210 hours of sunlight, setting the stage for the gradual increase that unfolds throughout the year. As winter transitions into spring, February witnesses a notable rise to 276 hours, heralding a brighter, more inviting landscape. The sun continues to assert its presence, reaching 342 hours in March and peaking at 353 hours in April, as locals and visitors alike begin to embrace the outdoors. May takes the sun's generosity a step further with 385 hours, leading into the summer months of June and July, where it shines the brightest at 383 hours and 398 hours, respectively. Despite a slight decline in August's 374 hours, the sunlight remains abundant. As autumn sets in, September and October maintain a warm ambience with 338 and 321 hours of sunshine. Finally, November and December close the year with 274 and 259 hours, reminding us of the cyclical nature of light and warmth in this enchanting region.
In January, the likelihood of sunny weather in Altai, Mongolia stands at a promising 68%, setting the stage for a bright start to the year. This frequency of sunshine is closely matched by February, which sees a slight increase to 70%. As we progress towards spring, however, the chances begin to dip, with March and April experiencing lower probabilities at 57% and 58%, respectively. Interestingly, the trend shifts as the year moves into September and October, showcasing the region's sunniest months with 77% and 73% chances, respectively. Overall, January offers a substantial chance of sunny days, signaling the enduring charm of Mongolia's winter landscape.
In Altai, Mongolia, January heralds the year with 9 hours of daylight, marking the beginning of a slow but steady transition towards the longer days of spring and summer. As February unfolds, daylight increases to 10 hours, hinting at the approaching warmth. This upward trend continues into March, bringing 11 hours of light, and by April, the days stretch to a delightful 13 hours, as nature awakens. May and June reach their peak with 14 to 15 hours of glorious sunlight, creating a vibrant atmosphere for outdoor adventures. However, the rhythm of daylight begins to wane in late summer, with August offering 14 hours before tapering down to 12 hours in September. As the year draws to a close, daylight diminishes again—October provides 10 hours, culminating in November's 9 hours and December's 8 hours, completing the cycle of light that defines life in this striking region.
In January, the winds of Altai, Mongolia, gently weave through the landscape, averaging a moderate 2.7 m/s (6 mph). This heralds the start of a gradual increase in wind speed as the months progress, peaking in May at 4.1 m/s (9 mph), which signals the transition into summer. Following a brief dip in July, where the winds return to January's speed, there’s a subtle rise again in September, before settling into a calmer pace as winter approaches once more. Overall, the wind patterns reflect a dynamic fluctuation, with spring heralding the most robust breezes, while the winter months exhibit a more tranquil breeze, making Altai's climate uniquely captivating throughout the year.
Weather in Altai varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Altai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, temperatures can plunge to a frigid minimum of -35°C (-30°F), with an average of -17°C (2°F) and a maximum of only -2°C (29°F). The month is characterized by very low precipitation, with only 3 mm (0.1 in) recorded over 0 days, and the humidity remains extremely high at 98%. In contrast, February experiences somewhat milder conditions, with a minimum temperature of -27°C (-17°F) and an average of -13°C (10°F), reaching up to 6°C (43°F) at its warmest. Precipitation increases slightly to 6 mm (0.2 in) over 1 day, and humidity decreases to 94%. This shift in weather makes February a bit more bearable compared to the depths of January. For more detailed insights, you can check Altai weather in February.
In January, the weather is harsh and frigid, with temperatures plummeting as low as -35°C (-30°F) and an average of -17°C (2°F). The month experiences minimal precipitation, accumulating only 3 mm (0.1 in) with no rain days, and humidity remains high at 98%. In contrast, March brings a noticeable shift toward milder conditions, where temperatures rise to a minimum of -20°C (-4°F) and an average of -4°C (24°F), peaking at 13°C (56°F). Precipitation increases in March to 10 mm (0.4 in) over three days, and humidity drops to a more comfortable 88%. For more details on the weather in March, you can visit Altai weather in March.
In January, the weather is characterized by frigid temperatures, with a minimum of -35°C (-30°F) and an average temperature hovering around -17°C (2°F). The month sees little precipitation, recording only 3 mm with no rainy days, and high humidity levels at 98%, contributing to the intensely cold and dry conditions. In stark contrast, April brings a significant warming trend, with temperatures ranging from a minimum of -16°C (4°F) to a maximum of 22°C (72°F) and an average of 3°C (38°F). This spring month experiences more precipitation at 17 mm over four days and considerably lower humidity at 74%, marking a clear departure from January's harsh winter weather. For more details on the weather conditions in April, check Altai weather in April.
In January, the weather is starkly cold, with temperatures plummeting to a minimum of -35°C (-30°F) and averaging around -17°C (2°F). Precipitation is minimal, with just 3 mm (0.1 in) and a humidity level that reaches a chilling 98%, making it one of the coldest months of the year.
In contrast, May offers a much more temperate climate, with temperatures ranging from a minimum of -11°C (12°F) to a pleasant maximum of 24°C (76°F), averaging around 10°C (49°F). The month sees an increase in precipitation, totaling 19 mm (0.8 in) over six days, and a much lower humidity level of 50%, contributing to a refreshing spring atmosphere. For a detailed look at what to expect, check out Altai weather in May.
In January, the weather is characterized by bitterly cold temperatures, with minimums plunging to -35°C (-30°F) and an average hovering around -17°C (2°F). The month sees virtually no precipitation, with humidity remaining high at 98%, creating a frigid atmosphere. In stark contrast, June experiences a significant warming trend, where temperatures range from a minimum of -1°C (30°F) to a maximum of 29°C (84°F), with an average of 15°C (60°F). This month receives 27 mm (1.1 in) of precipitation over eight days, and the humidity drops to a more comfortable 48%. For those interested in exploring more about the weather in June, visit Altai weather in June.
In January, temperatures can plunge as low as -35°C (-30°F), with an average of -17°C (2°F) and a maximum of only -2°C (29°F). This chilling month sees minimal precipitation, averaging just 3 mm (0.1 in) over zero days, while humidity remains high at 98%. In contrast, July brings a significant transformation in weather, with temperatures ranging from a minimum of 4°C (40°F) to a comfortable average of 17°C (64°F), reaching a maximum of 31°C (87°F). This warmer month experiences more precipitation, averaging 42 mm (1.6 in) over nine days, and the humidity drops to a more moderate 49%. For a detailed look at July weather in the region, check out Altai weather in July.
In January, the weather is characterized by frigid temperatures, with a minimum of -35°C (-30°F) and an average of -17°C (2°F), rarely rising above -2°C (29°F). The month sees negligible precipitation at just 3 mm (0.1 in) and maintains high humidity levels at 98%, creating a harsh winter environment. In contrast, August experiences a much milder climate, with temperatures ranging from a minimum of 1°C (34°F) to a pleasant average of 15°C (59°F) and reaching a maximum of 27°C (82°F). Precipitation is significantly higher in August, totaling 66 mm (2.6 in) over about 9 days, and the humidity drops to a more comfortable 54%. For a detailed look at the conditions during this month, you can visit Altai weather in August.
January and September present a stark contrast in weather conditions. In January, temperatures can plummet to a chilling minimum of -35°C (-30°F), with an average that hovers around -17°C (2°F) and barely reaches a maximum of -2°C (29°F). The month is characterized by extreme cold and high humidity at 98%, though it sees almost no precipitation. In comparison, September offers a much milder climate, with temperatures ranging from a minimum of -7°C (19°F) to a pleasant maximum of 26°C (80°F) and an average of 9°C (49°F). This month experiences more rainfall, accumulating about 19 mm (0.8 in) over four days, and lower humidity at 59%. For a detailed look at weather patterns in September, check out Altai weather in September.
In January, the weather is frigid, with temperatures plummeting to a minimum of -35°C (-30°F) and an average of -17°C (2°F), making it one of the coldest months of the year. Precipitation is minimal at just 3 mm (0.1 in) over zero days, while the humidity remains extremely high at 98%, contributing to the biting chill. In stark contrast, October experiences a much milder climate with temperatures ranging from a minimum of -15°C (5°F) to a maximum of 19°C (66°F), averaging around 0°C (33°F). This month sees a slight increase in precipitation to 10 mm (0.4 in) over four days, and humidity drops to a more comfortable 67%. For more details on the weather during this time, check out Altai weather in October.
January weather is characterized by extreme cold, with temperatures plunging to a minimum of -35°C (-30°F) and averaging -17°C (2°F), making it one of the coldest months of the year. In contrast, November experiences milder conditions, featuring a minimum temperature of -25°C (-13°F) and an average of -7°C (19°F), with daytime highs reaching up to 11°C (53°F). Additionally, January sees almost no precipitation with an average of just 3 mm (0.1 in) over the course of the month, while November has slightly higher precipitation levels at 7 mm (0.3 in) over a single day. Humidity also differs, with January maintaining a high humidity of 98%, compared to November’s relatively lower 86%. For more detailed information about November weather, check out Altai weather in November.
In December, temperatures in Altai are slightly milder, with an average of -15°C (5°F) compared to January's -17°C (2°F). Although both months experience bitter cold, January can plunge to a lower minimum of -35°C (-30°F), while December's minimum is a slightly warmer -31°C (-24°F). Precipitation is low in both months, with December receiving a tiny 4 mm over 1 day and January seeing only 3 mm with no precipitation days at all. Interestingly, humidity remains high in both months, hovering around 98% in January and 96% in December. For more detailed information about December weather, you can check Altai weather in December.
January in Altai is characterized by its harsh winter conditions, making it stand out from the milder months. With temperatures plummeting to bitterly cold levels, it’s a time when the landscape is often covered in a frozen white blanket, creating a serene yet stark beauty. Unlike other months, January sees little to no precipitation, contributing to the dry, crisp air that can feel quite piercing due to the high humidity. This combination of frigid temperatures and stillness makes January a month of quiet reflection and stunning winter scenery. For more detailed insights on the region's climate, visit Altai Climate.