Last updated: August 21, 2025
In January, Xi'an, China experiences a dynamic winter climate characterized by an average temperature of 5°C (41°F). The month sees a maximum of 18°C (64°F), providing a brief respite from the chill, while temperatures can dip to a brisk -8°C (17°F) at night. With 47 mm (1.8 in) of precipitation spread across 8 days, the air is marked by a relatively high humidity level of 67%, which can make for a brisk yet refreshing atmosphere. Travelers to this historic city will find January a blend of cold air and unique winter charm, perfect for exploring its rich heritage amidst cool temperatures.
In Si'an, China, January presents a captivating variety of temperatures, with minimums dipping to -8°C (17°F) and daytime highs reaching a pleasant 18°C (64°F). The month typically experiences an average temperature of 5°C (41°F), showcasing the coldest stretch of winter before it gradually warms in February, where the temperatures climb slightly to a range of -5°C to 24°C (23°F to 75°F). This upward trend continues into the spring months, with March nudging averages to 11°C (51°F) and April warming further to 15°C (59°F). As the year progresses, Si'an shakes off winter’s chill, transitioning to increasingly warmer conditions that peak during the summer months. In contrast, January’s brisk air and frosty nights set a serene atmosphere, inviting winter enthusiasts to enjoy the last hurrah of the colder season before the climate shifts dramatically.
In January, Si'an, China, experiences a moderate rainfall of 47 mm (1.8 in) spread across approximately 8 days, marking a subtle transition into the wetter months ahead. As winter recedes, the precipitation begins its gradual climb, with February seeing a slight increase to 52 mm (2.0 in). However, the most significant uptick arrives in the late spring and summer months, peaking in July with a striking 231 mm (9.1 in) over 17 days. This trend highlights a clear seasonal pattern, where precipitation not only increases in amount but also in frequency, emphasizing Si'an's shift from drier winter months to a robust monsoon season by mid-year.
In January, Si'an experiences a relatively moderate humidity level of 67%, setting the stage for the wetter months ahead. As winter transitions into spring, the humidity gradually rises, peaking at 79% in March. The months of April and May usher in a significant increase, with humidity soaring to 86% and 87%, respectively. By the time summer hits, the city finds itself enveloped in a humid atmosphere, reaching a staggering 95% in July, which marks the pinnacle of the year. As summer wanes, humidity begins to decline, dropping back to 79% in September and continuing its descent through the latter months, settling at 73% by December. This trend highlights Si'an's gradual shift from drier winter conditions to a humid summer climate, followed by a gentle retreat into more comfortable levels as the year closes.
In January, Si'an, China, experiences a moderate UV Index of 4, suggesting that sun exposure is manageable but still requires caution, with a burn time of around 30 minutes for fair-skinned individuals. As the month progresses into February, the UV Index rises to 6, marking a shift to a high exposure category and reducing the burn time to 25 minutes. This trend continues into the coming months, where from March through June, the UV Index escalates dramatically, reaching a peak of 11 during July and August, signaling an extreme exposure risk with a minimal burn time of just 10 minutes. As summer transitions to fall, the UV Index gradually decreases, but remains significant, showing values of 10 in September and 8 in October. By late year, the index falls back to 4 in December, reflecting the seasonal ebb and flow of UV radiation in this region. Stay informed and protect your skin by following local UV trends. For more details, visit Si'an UV Index.
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In January, Si'an, China, experiences 166 hours of sunshine, marking the year's lowest point for bright days. As winter wanes and February arrives, the sun starts to peek through more often, increasing to 218 hours. By March, the days grow longer and sunnier with 254 hours of sunshine, paving the way for the delightful spring weather ahead. The trend continues upward, with April basking in 265 hours, and May basking in the warmth of 288 hours. June and July maintain this sunny disposition, showcasing 287 and 286 hours, respectively, before peaking in August with an impressive 308 hours. As summer fades into fall, the hours gradually decrease, with September still enjoying 268 hours of sunshine. By October to December, Si'an sees a gentle decline, settling into the cooler months with 246, 226, and 220 hours of sunlight respectively. This trend illustrates how Si'an transitions from winter’s quiet gray to the vibrant warmth of summer, making each season uniquely captivating.
In January, Si'an, China enjoys a 49% chance of sunny weather, making it one of the brighter months of the year. As the winter season unfolds, sunlight becomes more prevalent compared to the months that follow, with February slightly trailing at 44%. Interestingly, the likelihood of sunny days decreases significantly as spring approaches, with March and April registering only 31% and 33%, respectively. This trend continues through the summer months, where overcast skies dominate, bringing a stark contrast to the sunnier winter days. Notably, November and December rebound with higher probabilities of sunshine, reaching 60% and 62%, reclaiming the sun as winter gives way to the cooler season. This cyclical behavior showcases the dynamic weather pattern in Si'an, highlighting January as a prime time for sun seekers before the clouds take over.
In Si'an, China, January heralds a modest 10 hours of daylight, setting the stage for gradual lengthening as the year unfolds. By February and March, daylight extends to 11 hours, hinting at the approaching warmth of spring. April ushers in a delightful 12 hours, quickly followed by a flourishing 13 hours in May, as nature awakens in full bloom. The longest days occur in June with 14 hours, perfect for outdoor adventures and explorations. As summer transitions into fall, daylight gently wanes, with July and August both enjoying 13 hours before dipping to 12 hours in September. The descent continues through October and November, returning to 10 hours in December, bringing the year full circle. This subtle ebb and flow of daylight not only marks the changing seasons but also encapsulates the vibrant rhythm of life in Si'an.
In January, Si'an experiences a gentle breeze with an average wind speed of 3.6 m/s (8 mph), setting a tranquil tone for the new year. This calmness is mirrored in February, where the wind picks up slightly to 3.8 m/s, before settling back to 3.6 m/s in March, suggesting a consistent pattern of mild winds during the early months. As spring approaches, April and May see a slight dip in wind speeds, averaging 3.4 m/s, which gives way to a more noticeable increase in July, where winds reach 4.5 m/s (10 mph). The trend then shifts again as summer fades into fall, with speeds tapering back to around 3.5 m/s in October and 3.4 m/s in November, before settling down further to 3.1 m/s in December. This cyclical rhythm of wind speeds not only shapes Si'an’s weather landscape but also enhances the serene atmosphere characteristic of the region, especially in the quieter winter months.
Weather in Si'an varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Si'an, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of January and February, January tends to be colder, with average temperatures ranging from a minimum of -8°C (17°F) to a maximum of 18°C (64°F). In contrast, February sees a slight increase in temperatures, with a minimum of -5°C (23°F) and a maximum of 24°C (75°F). Precipitation is slightly higher in February, totaling 52 mm (2.0 in) compared to January's 47 mm (1.8 in), although both months experience roughly the same number of rainy days at eight. Humidity levels also show a slight increase, with January at 67% and February edging up to 69%. For a more detailed look at February weather, you can visit Si'an weather in February.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -8°C (17°F) to a maximum of 18°C (64°F) and an average of 5°C (41°F). The month sees about 47 mm (1.8 in) of precipitation over 8 days, with humidity levels around 67%. In contrast, March ushers in a noticeable warming trend, featuring higher temperatures that range from 0°C (33°F) to 27°C (81°F), and an average of 11°C (51°F). Although slightly more precipitation occurs in March at 56 mm (2.2 in) over 9 days, the humidity rises to 79%, making the air feel warmer and more humid. For more detailed insights, you can check out Si'an weather in March.
January and April present a stark contrast in weather conditions. January tends to be much colder, with average temperatures ranging from a minimum of -8°C (17°F) to a maximum of 18°C (64°F), accompanied by relatively low precipitation of 47 mm (1.8 in) over 8 days and moderate humidity levels at 67%. In contrast, April enjoys a milder climate, with temperatures increasing significantly—averaging between 4°C (39°F) and a hot 30°C (87°F). Additionally, April sees increased precipitation at 70 mm (2.8 in) over the same number of days, alongside higher humidity levels reaching 86%. For more information about the weather in April, check out Si'an weather in April.
January and May exhibit stark contrasts in weather conditions. In January, temperatures can dip as low as -8°C (17°F) with an average of around 5°C (41°F) and a maximum of 18°C (64°F). This month sees an average precipitation of 47 mm (1.8 in) over approximately 8 days, accompanied by a humidity level of 67%. In contrast, May brings much warmer temperatures, with a minimum of 9°C (49°F), an average of 21°C (69°F), and highs reaching 35°C (95°F). The rainfall in May is significantly higher at 112 mm (4.4 in) over 9 days, and the humidity also rises to 87%. For a detailed look at May's weather patterns, check Si'an weather in May.
The weather in January is notably cooler, with temperatures ranging from a minimum of -8°C (17°F) up to a maximum of 18°C (64°F), and an average of 5°C (41°F). This month experiences about 47 mm (1.8 in) of precipitation over 8 days, accompanied by a humidity level of 67%. In contrast, June offers a much warmer climate, with minimum temperatures of 16°C (61°F) and maximum values soaring to 37°C (99°F), boasting an average of 24°C (76°F). The summer month sees higher precipitation, totaling around 131 mm (5.2 in) over 10 days, along with increased humidity at 90%. For more detailed information on June weather, check out Si'an weather in June.
In January, Si'an experiences chilly temperatures, with nighttime lows dropping to -8°C (17°F) and daytime averages around 5°C (41°F). The month typically sees about 47 mm (1.8 in) of precipitation over approximately 8 days, accompanied by a humidity level of 67%. In stark contrast, July brings a dramatic increase in warmth, with lows around 18°C (65°F) and highs reaching up to 39°C (103°F). This summer month also experiences a significant spike in rainfall, totaling 231 mm (9.1 in) over 17 days, while humidity levels rise to a hefty 95%. For a closer look at July weather specifics, you can visit Si'an weather in July.
January and August present starkly contrasting weather conditions. In January, temperatures range from a chilly minimum of -8°C (17°F) to a mild maximum of 18°C (64°F), with an average of 5°C (41°F). The month sees about 47 mm (1.8 in) of precipitation over approximately 8 days, accompanied by a humidity level of 67%. In contrast, August features a much warmer climate with temperatures ranging from a minimum of 21°C (71°F) to a scorching maximum of 37°C (99°F), averaging 28°C (84°F). During this month, precipitation significantly increases to 192 mm (7.6 in), occurring over 14 days, and the humidity rises to 92%. For more details on the August climate, you can check Si'an weather in August.
January and September present starkly contrasting weather conditions. In January, temperatures range from a chilly minimum of -8°C (17°F) to a mild maximum of 18°C (64°F), with an average of 5°C (41°F). The month sees about 47 mm (1.8 in) of precipitation over 8 days, coupled with a humidity level of 67%. In contrast, September is much warmer, with temperatures varying from a minimum of 16°C (61°F) to a sweltering maximum of 34°C (94°F), leading to an average of 24°C (76°F). Rainfall increases significantly, reaching 142 mm (5.6 in) over 11 days, while humidity also rises to 79%. For more specific details on September weather, you can refer to the following link: Si'an weather in September.
January and October present contrasting weather conditions. In January, temperatures can drop as low as -8°C (17°F), with an average of 5°C (41°F) and a maximum reaching 18°C (64°F). The month sees about 47 mm (1.8 in) of precipitation over 8 days and has a humidity level of 67%. In stark contrast, October enjoys milder weather with minimum temperatures around 8°C (47°F) and an average high of 19°C (66°F), peaking at 32°C (90°F). It experiences slightly more precipitation at 58 mm (2.3 in) over just 7 days, with humidity rising to 76%. For more detailed insights, check out Si'an weather in October.
January and November present contrasting weather patterns. In January, the temperatures range from a chilly minimum of -8°C (17°F) to a more moderate maximum of 18°C (64°F), with an average temperature of 5°C (41°F). The month experiences around 47 mm (1.8 in) of precipitation over 8 days, coupled with a humidity level of 67%. In contrast, November enjoys milder conditions, with temperatures starting from a minimum of 1°C (34°F) and reaching up to 27°C (81°F), averaging 13°C (56°F). This month sees slightly higher precipitation at 53 mm (2.1 in) over just 7 days, but with increased humidity at 77%. For a closer look at weather specifics in November, you can check this link: Si'an weather in November.
In January, the weather is slightly colder than in December, with January's average temperature at 5°C (41°F) compared to December's 7°C (45°F). While both months experience similar maximum temperatures, January sees a minimum of -8°C (17°F), which is a touch colder than December's -7°C (20°F). Precipitation levels are comparable, with January receiving 47 mm (1.8 in) and December slightly less at 44 mm (1.7 in), and both months have about eight days of rain. Additionally, January’s humidity is a bit lower at 67%, while December has higher humidity at 73%. For more details on December weather, visit Si'an weather in December.
January in Si'an brings a distinct chill that sets it apart from the milder months of the year. With temperatures dipping to a minimum of -8°C, residents experience a stark contrast to the more temperate conditions of the spring and autumn. This winter month also sees a higher level of humidity at 67%, coupled with about 47 mm of precipitation over approximately eight days, making the air feel even colder. The combination of these factors creates a unique weather pattern that highlights the depth of winter in Si'an. For a deeper understanding of how January compares to other months, explore the full details at Si'an Climate.