Last updated: August 28, 2025
April in Ulan Bator, Mongolia presents a striking contrast in weather conditions, ranging from chill to warmth. The month ushers in an average temperature of 2°C (36°F), peaking at a pleasant 25°C (77°F). However, early spring still holds sway, as nighttime lows can plunge to a brisk -16°C (4°F). While the city sees around 15 mm (0.6 in) of precipitation spread across just 4 days, the air remains relatively humid at 59%, adding to the overall freshness of the season. This dynamic weather makes April a fascinating month of transition in Ulan Bator.
In April, Ulan Bator begins to shake off the grip of winter, with temperatures gradually rising. The month starts with lows around -16°C (4°F) and averages a comfortable 2°C (36°F), presenting a significant welcome from the harshness of earlier months. As days progress, maximum temperatures can soar to a pleasant 25°C (77°F), hinting at the approaching warmth of spring. This transition showcases a marked increase from March, where the daily max barely reached 16°C (61°F). Overall, April's temperature shift not only indicates the thinning of winter's chill but also heralds the vibrant changes that spring brings to the city and its surroundings.
April marks a noticeable shift in Ulan Bator's weather as precipitation amounts rise to 15 mm (0.6 in), nearly doubling March's 7 mm (0.3 in). This increase is reflected in the number of rainy days as well, with four days of precipitation marking a welcome transition from the dry winter months. As spring unfolds, the city experiences a gradual build-up towards the wetter summer season, laying the groundwork for the more substantial rains that arrive in May and June. This growth in rainfall not only signposts the end of winter's dry grip but also signifies an awakening of nature, as Ulan Bator prepares for a lush and vibrant summer ahead.
In April, Ulan Bator experiences a noticeable shift in humidity with levels dropping to 59%, continuing the downward trend from the previous months. After the high humidity of 92% in January and declining to 64% by March, April represents a transitional period as spring sets in. This decrease reflects a broader pattern as the humidity levels gradually ease into the milder, drier conditions of late spring and early summer, ultimately reaching a low of 50% in May. This steady decline indicates the city's shift away from the cold and moisture-laden winter months, paving the way for more comfortable atmospheric conditions.
As April unfolds in Ulan Bator, the UV Index rises to 7, marking the transition to a high exposure category and a notable decrease in safe sun exposure time to just 25 minutes. This increase reflects a significant shift from the more moderate levels seen in the earlier months of the year; January's UV Index was a mild 2, while by March, it had already climbed to a 5. The trend is clear: as spring progresses towards summer, residents and visitors should take precautions against potential sunburn. With May approaching, the UV Index will hit 9, falling into the very high category, emphasizing the need for effective sun protection strategies. To stay informed and prepared for changing UV levels, check the forecast at Ulan Bator UV Index.
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April in Ulan Bator shines brightly, receiving 333 hours of golden sunlight, a delightful increase that marks a continued trend of growing daylight as winter fades. Following the enlivening 327 hours in March, this upward trajectory signals the city's gradual awakening from the cold embrace of winter. April's sunshine offers a vibrant preview of the months to come, with May set to bask in even more light, totaling 376 hours. This steady increase in sunlight not only heralds the arrival of spring but also invites residents and visitors to partake in outdoor activities, making it an ideal time to explore the breathtaking landscapes and rich culture of Mongolia. As the city flourishes in radiant warmth, April stands as a pivotal point in the year, ushering in a season of vitality and renewal.
In April, Ulan Bator experiences a 53% chance of sunny weather, reflecting a slight dip from the brighter days of previous months like February and March. This trend indicates a transitional phase, as the city shifts from the cold grasp of winter towards the warmth of spring. Interestingly, the chances of sunshine begin to rise again with the approach of autumn, peaking notably in October at 69%, suggesting that while April may feature a mix of sun and clouds, the promise of brighter days is just around the corner. The fluctuation in sunny weather not only underscores the city's unique climate but also invites explorers to embrace the crisp air and evolving vistas of early spring.
As April unfolds in Ulan Bator, the days begin to lengthen significantly, with daylight stretching to an invigorating 13 hours. This noticeable increase from March, which enjoys only 11 hours of light, marks a turning point as the city emerges from the grips of winter. Following the trend of gradual growth in daylight from the start of the year, April's brightening skies signal the approach of warmer months, heralded by the promise of 15 hours of daylight in May. This progression not only uplifts spirits but also invites opportunities for outdoor activities, as the sun's rays start to reclaim the landscape after months of relative darkness.
As April unfolds in Ulan Bator, the city feels a gentle shift in the breeze, with average wind speeds reaching 3.4 m/s (8 mph)—a notable increase from the preceding months. This uptick signals the gradual transition into spring, as the winds pick up from a relatively calm 2.6 m/s (6 mph) in January and 2.4 m/s (5 mph) in February to more spirited gusts. By March, the winds begin to wake, ascending to 3.1 m/s (7 mph), and continuing to gain momentum into April and May, where they peak at 3.8 m/s (9 mph). This pattern of increasing wind speeds not only underscores the arrival of warmer weather but also hints at the vibrant energy of spring, invigorating the air in Mongolia's capital. The seasonal shift is palpable, with April's refreshing breezes heralding the bloom of life and activity, as the city prepares for the warmer months ahead.
Weather in Ulan Bator varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Ulan Bator, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January present starkly contrasting weather conditions. In April, the temperature ranges dramatically from a minimum of -16°C (4°F) to a pleasant maximum of 25°C (77°F), with an average temperature of 2°C (36°F). This month also sees light precipitation of 15 mm (0.6 in) over about 4 days, with humidity levels averaging 59%. In contrast, January experiences much harsher conditions, with temperatures plummeting to a minimum of -42°C (-44°F) and an average of -22°C (-8°F), peaking at a maximum of only -5°C (23°F). Precipitation is minimal in January, amounting to just 2 mm (0.1 in) across no rainy days, coupled with high humidity of 92%. For more detailed information, you can check Ulan Bator weather in January.
In comparing the weather between April and February, it's evident that April offers significantly milder conditions. While February experiences frigid temperatures with a minimum of -38°C (-36°F) and an average of -18°C (0°F), April shows a remarkable rise, with temperatures ranging from -16°C (4°F) to a pleasant maximum of 25°C (77°F). Additionally, precipitation in April is higher at 15 mm (0.6 in) over 4 days compared to the scant 5 mm (0.2 in) that falls over just 1 day in February. Notably, February is characterized by a higher humidity level of 84%, contrasting with April's 59%. For more details, you can refer to Ulan Bator weather in February.
In comparing the weather between March and April, we observe a significant warming trend. March experiences much colder temperatures with a minimum of -29°C (-20°F) and an average of -7°C (20°F), while April sees a more moderate minimum of -16°C (4°F) and an average temperature of 2°C (36°F). The maximum temperatures also rise, with March peaking at 16°C (61°F) compared to April's maximum of 25°C (77°F). Precipitation remains relatively low in both months, with March receiving 7 mm (0.3 in) over 2 days and April slightly increasing to 15 mm (0.6 in) over 4 days. Humidity in March is slightly higher at 64%, compared to 59% in April. For more details on the weather in March, you can check Ulan Bator weather in March.
April and May in Ulan Bator exhibit notable differences in weather patterns. In April, temperatures range from a chilly minimum of -16°C (4°F) to a maximum of 25°C (77°F), with an average of 2°C (36°F). The month experiences relatively low precipitation of 15 mm (0.6 in) over 4 days, accompanied by a humidity level of 59%. In contrast, May sees a milder temperature range, with a minimum of -8°C (18°F) and a maximum reaching 30°C (87°F), resulting in an average of 9°C (48°F). Precipitation increases to 26 mm (1.0 in) across 5 days, while humidity drops to 50%. For more details, you can check Ulan Bator weather in May.
April and June present contrasting weather patterns, showcasing the transition from early spring to early summer. In April, temperatures can plummet to a minimum of -16°C (4°F), with an average of just 2°C (36°F) and a maximum reaching 25°C (77°F). This month experiences relatively low precipitation, averaging only 15 mm (0.6 in) over 4 days, along with a humidity level of 59%. In comparison, June brings significantly warmer conditions, with a minimum temperature of -3°C (28°F), an average of 15°C (59°F), and highs peaking at 32°C (90°F). June also sees increased precipitation at 44 mm (1.7 in) over 7 days, coupled with a slightly lower humidity of 55%. For a detailed look at the weather in June, you can visit Ulan Bator weather in June.
April weather in Ulan Bator is marked by significant temperature fluctuations, ranging from a frigid minimum of -16°C (4°F) to a maximum of 25°C (77°F), with an average temperature of 2°C (36°F). Precipitation is relatively low, totaling 15 mm (0.6 in) over just four days, and humidity sits at 59%. In contrast, July experiences much warmer conditions, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 32°C (91°F) and an average of 17°C (64°F). However, July also brings increased precipitation, amounting to 72 mm (2.9 in) over twelve days, and a slightly lower humidity of 57%. For a deeper look into July's weather patterns, check out Ulan Bator weather in July.
April and August showcase distinct contrasts in weather patterns. In April, temperatures can range from a chilly minimum of -16°C (4°F) to a pleasant maximum of 25°C (77°F), averaging around 2°C (36°F). The month sees minimal precipitation, with only about 15 mm (0.6 in) over just four days, and a humidity level of 59%. In comparison, August experiences milder temperatures with a minimum of 0°C (33°F) and a maximum of 28°C (82°F), averaging 14°C (58°F). However, it is a wetter month, receiving 83 mm (3.3 in) of rainfall over 13 days, while the humidity remains relatively stable at 58%. For more specifics on August weather, you can check out Ulan Bator weather in August.
April and September in Ulan Bator present contrasting weather conditions. In April, temperatures range from a brisk -16°C (4°F) at night to a pleasant 25°C (77°F) during the day, with an average temperature of 2°C (36°F). There's relatively low precipitation in April, amounting to 15 mm (0.6 in) over just 4 days, and humidity levels hover around 59%. In contrast, September experiences milder temperatures with a minimum of -9°C (16°F) and a maximum of 27°C (81°F), leading to a higher average of 9°C (48°F). Precipitation is more significant in September, with 51 mm (2.0 in) recorded over 8 days, and humidity rises slightly to 65%. For a deeper insight into September's climate, check out Ulan Bator weather in September.
April and October in Ulan Bator showcase contrasting yet intriguing weather patterns. In April, temperatures fluctuate significantly with a minimum of -16°C (4°F) and an average of 2°C (36°F), peaking at a warm 25°C (77°F). The month experiences relatively low precipitation of 15 mm (0.6 in) over just four days, contributing to a humidity level of 59%. In contrast, October sees a slight decrease in warmth, with average temperatures dropping to -1°C (30°F) while still reaching a maximum of 22°C (72°F). Precipitation increases slightly to 21 mm (0.8 in) also over four days, leading to a higher humidity at 65%. The transition from spring to autumn highlights the distinct climatic shifts in this region. For more detailed information, check out Ulan Bator weather in October.
April and November present striking contrasts in weather patterns. In April, temperatures range from a chilly minimum of -16°C (4°F) to a much warmer maximum of 25°C (77°F), with an average of 2°C (36°F). This month sees about 15 mm (0.6 in) of precipitation over four days, with a humidity level of 59%. In contrast, November experiences significantly colder temperatures, with a minimum of -35°C (-32°F) and an average of -12°C (11°F), peaking at just 9°C (49°F). Precipitation is lighter, at 10 mm (0.4 in) over two days, accompanied by a slightly higher humidity of 67%. For more detailed information, check out Ulan Bator weather in November.
April and December present striking contrasts in weather conditions. In April, temperatures range from a chilly -16°C (4°F) at night to a warm 25°C (77°F) during the day, with an average temperature around 2°C (36°F) and modest precipitation of 15 mm (0.6 in) occurring over four days. The humidity sits at a comfortable 59%. Conversely, December showcases a much harsher climate, with temperatures plummeting to a minimum of -39°C (-38°F) and averaging -21°C (-5°F), only reaching a maximum of -3°C (28°F). Precipitation is minimal in December, at just 3 mm (0.1 in) with no rain recorded over the month, and humidity is significantly higher at 89%. For more detailed information, check out Ulan Bator weather in December.
April in Ulan Bator marks a notable shift in the weather as winter finally releases its grip. Temperature swings become more pronounced, with warm afternoons contrasting sharply against chilly nights. This month experiences a gradual increase in temperature, welcoming the first signs of spring after the frosty months of winter. While April enjoys a modest amount of precipitation, it's significantly drier than the surrounding months, leading to a refreshing crispness in the air. With humidity levels sitting at around 59%, the atmosphere is more invigorating, making it an ideal time for outdoor activities. To learn more about Ulan Bator’s unique climate, visit Ulan Bator Climate.