Last updated: August 28, 2025
Discover the October weather in the enchanting region of Altai, Mongolia, where temperatures begin to dip as autumn settles in. Expect daytime highs reaching a comfortable 19°C (66°F), while the average cools to around 0°C (33°F) during the night, sometimes plunging to a brisk -15°C (5°F). With approximately 10 mm (0.4 in) of precipitation over 4 days, the month brings a moderate amount of rain, which complements the crisp air and heightened 67% humidity. This blend of cool temperatures and occasional rainfall creates a perfect backdrop for experiencing the stunning fall foliage and vibrant landscapes that characterize this breathtaking region.
In October, temperatures in Altai, Mongolia begin to shift as the region transitions from the warmth of autumn to the chill of winter. The month showcases a notable drop in temperatures, with minimums averaging around -15°C (5°F) and maximums climbing to a mild 19°C (66°F). This range marks a significant change from September, where the weather was relatively warmer. The average temperature hovers near 0°C (33°F), indicating the approach of harsher conditions. With cold nights becoming more frequent, October sets the stage for the long winter ahead, yet still allows for moments of sunshine and pleasant afternoons. As the landscape transitions, visitors can expect a stunning array of fall colors amidst the crisp air, making it a unique time to experience the beauty of Mongolian nature.
In October, Altai, Mongolia experiences a notable shift in precipitation patterns as the season transitions towards winter. The precipitation amount settles at 10 mm (0.4 in), mirroring the relatively dry conditions of the spring and early summer months like March and April, but significantly lower than the lush landscapes of August. With rainfall occurring over four days, the month maintains a balance between the abundant moisture of summer and the dry chill of winter. This hints at the region’s climatic behavior, where the early autumn days may usher in the crispness of colder temperatures while still allowing for some lingering rain, setting the stage for the snow-laden months ahead. Overall, October’s precipitation reinforces the gradual decline in moisture as Altai prepares for its harsh winters.
In October, Altai, Mongolia experiences a noticeable shift in humidity, settling at 67% after the higher levels observed in the summer months. Following the drier spell of June and July, where humidity dipped to around 48%, October marks a gradual return to more saturated conditions as autumn sets in. This month also acts as a transitional period, bridging the dry summer and the colder, more humid winter that follows, evidenced by the spike to 86% in November. The increasing humidity in October not only enhances the crispness of the fall air but also signals the impending seasonal changes that define the region, showcasing the dynamic climate patterns of Altai.
In October, the UV Index in Altai, Mongolia drops to 5, placing it in the moderate exposure category with a burn time of 30 minutes. This signifies a transition from the intense summer months, where the UV Index consistently peaked at 10, towards more manageable levels. Comparatively, the UV Index descends from the high readings of September but remains significantly above the winter lows of January and December, which feature an Index of 2. As autumn sets in, it's essential to stay aware of UV exposure even as temperatures drop, making it a good practice to monitor the Altai UV Index as the days grow shorter.
UV Risk Categories
As October rolls into Altai, Mongolia, the days grow shorter but still bask in a generous 321 hours of sunshine. This month marks a transition in the yearly rhythm of light, following the vibrant summer months when July shone the brightest with 398 hours. In contrast, October experiences a dip in daylight, yet it holds on to a respectable amount of sun, significantly more than the winter months that follow. The gradual decline from the peak in July highlights the region's rich seasonal variation, as nature prepares for the dormancy of winter, while still offering a warm glow to those who explore its breathtaking landscapes during this crisp, autumn month.
In October, Altai, Mongolia, enjoys a promising 73% chance of sunny weather, making it one of the brighter months of the year. This positive trend follows a notably sunny September, boasting a remarkable 77% sunshine likelihood, and continues from a generally bright start in the fall. Over the course of the year, the likelihood of sunny days tends to fluctuate, with January and February showing high probabilities in the upper 60s. However, as the seasons transition, there is a noticeable dip during the summer months, with July and August plunging to their lowest points. As October rolls in, the weather brightens again, providing a beautiful backdrop for exploration and outdoor activities amidst the stunning landscapes of Altai.
In Altai, Mongolia, the daylight duration experiences a fascinating ebb and flow throughout the year. Beginning in January with just 9 hours of sunlight, the days gradually lengthen, peaking in the summer months of June and July with a generous 15 hours of daylight. This radiant stretch offers a vibrant contrast to the fall and winter months, where daylight diminishes again. By October, the sun retreats to 10 hours, signaling the approach of winter's shorter days. As the year progresses, the rhythmic cycle of longer and shorter days underscores the region's unique seasonal shifts, shaping both the landscape and the lifestyle of its inhabitants.
As October arrives in Altai, Mongolia, the winds begin to calm, with an average speed of 2.6 m/s (6 mph), marking a gentle transition into the cooler months. This decrease from the springtime peaks of 4.1 m/s in May reflects a seasonal trend where winds reach their highest speeds in the late spring before tapering off. Following a mild September, which held steady at 3.0 m/s, October showcases a slight drop that hints at the approaching winter. Interestingly, while the wind speeds fluctuate throughout the year, they generally stabilize, with most months averaging between 2.5 m/s and 4.1 m/s, creating an overall gentle breeziness that defines Altai's unique autumnal character. The softer winds of October serve as a reminder of nature's transition, inviting both reflection and appreciation of the changing landscape.
Weather in Altai varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Altai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In October, the weather is significantly milder, with temperatures ranging from a minimum of -15°C (5°F) to a pleasant maximum of 19°C (66°F). The average temperature hovers around 0°C (33°F), accompanied by light precipitation of about 10 mm (0.4 in) over four days and a humidity level of 67%. In contrast, January presents a starkly colder picture, with temperatures plummeting to a chilling minimum of -35°C (-30°F) and an average of -17°C (2°F). The maximum temperature barely reaches -2°C (29°F), and notable is the almost non-existent precipitation, with only 3 mm (0.1 in) recorded throughout the month and no rainy days. The humidity spikes to a high of 98%, making the cold feel even more penetrating. For more detailed insights, check out Altai weather in January.
When comparing the weather in October and February, it's clear that February presents a more frigid climate. October features a brisk range of temperatures, with minimums around -15°C (5°F), average temperatures close to freezing at 0°C (33°F), and maximums reaching a mild 19°C (66°F). In contrast, February sees much colder conditions, with minimums plummeting to -27°C (-17°F) and average temperatures sitting at a chilly -13°C (10°F). Additionally, February tends to have higher humidity at 94%, compared to October's 67%, but it also experiences less precipitation, averaging only 6 mm (0.2 in) over just one day. For more details about February weather conditions in the region, you can visit Altai weather in February.
In October, temperatures range from a minimum of -15°C (5°F) to a maximum of 19°C (66°F), with an average of 0°C (33°F), while March is typically colder, with temperatures dipping as low as -20°C (-4°F) and peaking at 13°C (56°F), resulting in an average of -4°C (24°F). Both months receive similar amounts of precipitation at 10 mm (0.4 in), albeit with October experiencing it over four days compared to March's three. Humidity levels are notably higher in March at 88%, compared to 67% in October, which further emphasizes March's chilliness. For a deeper dive into March weather conditions, you can visit Altai weather in March.
The weather comparison between October and April reveals notable differences in temperature and precipitation patterns. In October, temperatures range from a chilly minimum of -15°C (5°F) to a comfortable maximum of 19°C (66°F), with an average of around 0°C (33°F) and relatively low precipitation of 10 mm (0.4 in) over just four days. In contrast, April sees slightly warmer temperatures, with lows of -16°C (4°F) and highs reaching 22°C (72°F), yielding an average of 3°C (38°F). April also brings increased rainfall, measuring 17 mm (0.7 in) over the same number of days, and a higher humidity level at 74%. For more details on the weather conditions during this month, you can visit Altai weather in April.
October and May present distinct contrasts in weather. In October, temperatures can dip to a chilling minimum of -15°C (5°F), with an average around 0°C (33°F) and a maximum of 19°C (66°F). The month experiences relatively low precipitation at 10 mm (0.4 in) over about 4 days, accompanied by a higher humidity level of 67%. In contrast, May brings milder conditions, with temperatures ranging from a minimum of -11°C (12°F) to a more comfortable maximum of 24°C (76°F), averaging around 10°C (49°F). Precipitation increases slightly to 19 mm (0.8 in) over 6 days, but humidity drops to 50%. These differences highlight May's overall warmth and increased precipitation compared to the cool, crisp air of October. For further details on May weather, visit Altai weather in May.
October and June showcase contrasting weather patterns. In October, temperatures can range from a chilling minimum of -15°C (5°F) to a mild maximum of 19°C (66°F), with an average of around 0°C (33°F). The month sees about 10 mm (0.4 in) of precipitation over approximately four days, contributing to a humidity level of 67%. In stark contrast, June experiences significantly warmer conditions with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 29°C (84°F), averaging 15°C (60°F). This month is wetter too, with about 27 mm (1.1 in) of precipitation over around eight days, and a lower humidity of 48%. For a more detailed look at the weather in June, visit Altai weather in June.
In a comparison of October and July's weather, October experiences a stark shift towards cooler temperatures, with an average of 0°C (33°F) and maximums reaching only 19°C (66°F), whereas July boasts much warmer conditions, averaging 17°C (64°F) and peaking at 31°C (87°F). Precipitation is also noticeably different; October sees lighter rainfall of 10 mm (0.4 in) spread across 4 days, in contrast to July's 42 mm (1.6 in) over 9 days, contributing to a significantly drier atmosphere in October despite its higher humidity level of 67%. For a closer look at July's climate, you can check out Altai weather in July.
October weather in Altai features a significant drop in temperatures, with minimums reaching -15°C (5°F) and an average around 0°C (33°F), compared to August's milder climate where temperatures range from a minimum of 1°C (34°F) to a maximum of 27°C (82°F). Additionally, October experiences much lower precipitation at 10 mm (0.4 in) over 4 days, while August is notably wetter, receiving 66 mm (2.6 in) across 9 days. Humidity levels are higher in October at 67% versus August's 54%, contributing to the overall chill in the air. For more detailed insights into August weather, you can visit Altai weather in August.
In October, the weather takes a noticeable turn as temperatures drop significantly, with a minimum of -15°C (5°F) and an average of 0°C (33°F), compared to September's milder temperatures, which range from a minimum of -7°C (19°F) to an average of 9°C (49°F). Additionally, October experiences a maximum temperature of only 19°C (66°F), while September can reach up to 26°C (80°F). Precipitation decreases slightly in October with 10 mm (0.4 in) over 4 days, compared to September's 19 mm (0.8 in) over the same duration. Notably, humidity rises in October to 67%, reflecting the chillier conditions as the region transitions into autumn. For more insights into September's weather patterns, visit Altai weather in September.
October and November present a stark contrast in weather patterns. In October, temperatures range from a minimum of -15°C (5°F) to a pleasant maximum of 19°C (66°F), with an average hovering around 0°C (33°F). The month sees relatively low precipitation of 10 mm (0.4 in) over just 4 days and humidity levels at 67%. On the other hand, November ushers in a significant drop in temperatures, with minimums reaching -25°C (-13°F) and a chilly average of -7°C (19°F), while the daytime maximums do not exceed 11°C (53°F). Precipitation decreases slightly to 7 mm (0.3 in), but it occurs over just 1 day, and humidity rises to a high of 86%. For more details, check out Altai weather in November.
October and December present quite different weather conditions. In October, temperatures range from a chilly -15°C (5°F) at night to a more moderate maximum of 19°C (66°F) during the day, with an average around 0°C (33°F). This month also sees about 10 mm (0.4 in) of precipitation over roughly four days, accompanied by a humidity level of 67%. In contrast, December brings much colder temperatures, with minimums plummeting to -31°C (-24°F) and an average of -15°C (5°F). The maximum temperature barely reaches freezing at 0°C (33°F). Precipitation decreases significantly to just 4 mm (0.2 in) over a single day, and humidity rises to a high 96%. For those interested in more detailed information, you can explore Altai weather in December.
October in Altai brings a distinct shift as the coolness of autumn settles in, with temperatures dipping significantly compared to the warmer months of summer. While the crisp air is invigorating, it also introduces the potential for cold snaps, making the average temperature hover around the freezing point. Precipitation is relatively low, with only a few rainy days, contributing to the serene beauty of the landscape blanketed in vibrant autumn hues. The overall humidity remains moderate, creating a refreshing atmosphere that contrasts sharply with the sweltering summer months. As you prepare for this transitional season, embrace the changing weather and explore more about it in detail at Altai Climate.