Last updated: August 21, 2025
October in Si'an, China, offers a delightful blend of warm days and cool evenings, making it an ideal time for exploration. With maximum temperatures reaching 34°C (93°F) and an average of 19°C (66°F), the weather is generally pleasant. However, be prepared for cooler mornings, as minimum temperatures can drop to 7°C (44°F). The month sees about 50 mm (2.0 in) of rainfall spread over 8 days, creating a refreshing ambiance, while humidity remains relatively high at 76%. This combination makes October a month of transformation, where the vibrant autumn colors start to emerge, inviting adventurers to experience Si'an's rich cultural heritage and stunning landscapes.
In October, Si'an, China experiences a delightful transition as temperatures begin to cool from the intense summer heat. With minimums hovering around 7°C (44°F) and average highs reaching 19°C (66°F), the city offers a comfortable climate ideal for outdoor activities. The maximum temperature of 34°C (93°F) reflects a lingering warmth from the preceding months, yet the overall trend signals a gentle descent into the crispness of autumn. As the month progresses, residents and visitors alike can enjoy the cooler evenings while soaking up the last rays of warm sunshine, making October a truly enjoyable time to explore Si'an's rich cultural landscape.
In October, Si'an, China experiences a notable decrease in precipitation, recording just 50 mm (2.0 in) of rainfall over 8 days. This marks a significant drop compared to the wetter summer months, where June and July showcase peaks of 257 mm (10.1 in) and 299 mm (11.8 in) respectively. The shift to drier conditions signals the transition into autumn, as the lush greenery of summer gives way to the more subdued hues of fall. With October's precipitation amount descending to one of the year’s lowest levels, residents and visitors can enjoy relatively dry weather, allowing for outdoor activities amidst the picturesque autumn landscape.
In October, Si'an experiences a notable drop in humidity, settling at 76% after the peak summer months. This slight decrease from September's 75% reflects a transition as the region prepares for the cooler, drier conditions of autumn. The humidity levels in October remain relatively high compared to the winter months; however, they are significantly lower than the peak summer humidity, which reaches a hefty 90% in July. Overall, as the year progresses from the sultry heights of summer to the more temperate fall, Si'an witnesses a gradual ebbing of moisture in the air, setting the stage for the crisp winter months ahead.
As October unfolds in Si'an, China, the UV Index stands at a strong 8, categorizing it as very high with an advised burn time of just 15 minutes. This trend reflects a slight decline from the extreme levels seen during the peak summer months, yet it remains significant enough to warrant caution. Notably, October’s UV Index is part of a gradual decrease after months of intensity, where levels peaked at 11 from May to August. As outdoor enthusiasts enjoy the crisp autumn air, they should still remain vigilant to protect their skin from potential sun damage. For more detailed information on maintaining safe sun exposure, check out Si'an UV Index.
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In October, Si'an experiences a delightful transition as the sun graces the city with 235 hours of sunshine—a charming contrast to the summer month of August, which boasts a peak of 300 hours. As the year progresses from the bright days of late spring and early summer, October's sunshine reflects a gradual decline in hours, yet it still provides a warm embrace as autumn approaches. Interestingly, the month follows September's total of 258 hours, showcasing a steady decrease, yet remaining above the levels seen in the earlier months of the year. This trend of fluctuating sunshine, peaking in the height of summer and gently tapering into fall, captures the essence of Si'an's climatic charm, making it a captivating destination year-round.
In Si'an, China, October brings a refreshing shift in weather patterns, with a 42% chance of sunny days. This marks a slight uptick from the preceding months, particularly after the lower probabilities seen during the blistering summer when the chance of sunshine dwindles to 17% in July. October's figures reflect a transition toward brighter skies, drawing us closer to the pleasant climates of fall. Interestingly, as the year progresses into November, the probability of sunshine increases even further to 52%, suggesting that the region begins to embrace sunnier days just before winter sets in. Overall, October presents a promising opportunity for enjoying the outdoors amidst the changing autumn foliage.
In Si'an, China, October marks a transitional phase as daylight begins to wane, illuminating the month with 11 hours of sunlight. Following the summer's peak in June, where daylight reached an impressive 14 hours, the gradual decrease becomes evident as day length recedes through the autumn months. The shift from the abundant light of May and June to October's more modest offering sets the stage for the cooler, darker days of winter. This rhythm of daylight mirrors the seasonal changes experienced in Si'an, enhancing the region's rich tapestry of natural beauty and cultural festivities. As daylight dwindles, the evenings invite cozy gatherings, making October a time of both reflection and connection amidst the changing scenery.
As October arrives in Si'an, China, the average wind speed settles at a gentle 2.5 m/s (6 mph), echoing the mild breeziness of both September and November. This slight consistency in wind patterns suggests a transition into cooler months, with a noticeable drop in speed during the summer's peak. Notably, July experiences the highest gusts at 2.9 m/s (7 mph), while June and August find themselves on the calmer side with speeds around 2.1 to 2.2 m/s (5 mph). October, nestled comfortably within this wind spectrum, provides a perfect backdrop for experiencing the changing seasons, as autumn gracefully unfolds in Si'an.
Weather in Si'an varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Si'an, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January present strikingly different weather patterns. In October, temperatures range from a mild minimum of 7°C (44°F) to a warm maximum of 34°C (93°F), with an average temperature of 19°C (66°F). The month experiences about 50 mm (2.0 in) of precipitation over 8 days, coupled with a relatively high humidity of 76%. In contrast, January brings much colder conditions, with temperatures dropping to a minimum of -11°C (13°F) and only reaching a maximum of 20°C (68°F), resulting in an average of just 5°C (41°F). Precipitation slightly increases to 68 mm (2.7 in), still over 8 days, but humidity decreases to 70%. For more details on January weather, you can visit Si'an weather in January.
October and February present stark contrasts in weather conditions. In October, temperatures range from a mild 7°C (44°F) at night to a warm 34°C (93°F) during the day, with an average of 19°C (66°F). The month experiences about 50 mm (2.0 in) of precipitation over eight days and generally higher humidity at 76%. In contrast, February sees much cooler temperatures, with nighttime lows dipping to -8°C (18°F) and daytime highs reaching 26°C (79°F), averaging around 6°C (44°F). Precipitation increases to 71 mm (2.8 in) over ten days, while humidity remains relatively steady at 73%. For more specific details about February weather, you can explore Si'an weather in February.
October and March present contrasting weather patterns. In October, temperatures range from a comfortable minimum of 7°C (44°F) to a maximum of 34°C (93°F), with an average of 19°C (66°F). The month brings relatively low precipitation, totaling 50 mm (2.0 in) over about 8 days, and boasts a humidity level of 76%. In contrast, March experiences cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 29°C (84°F), averaging around 12°C (54°F). It is also a wetter month, receiving 106 mm (4.2 in) of rain across approximately 13 days and slightly higher humidity at 82%. For more detailed information on March weather, you can refer to Si'an weather in March.
When comparing the weather in October and April, October tends to offer slightly warmer temperatures, with averages reaching 19°C (66°F) and a maximum of 34°C (93°F), while April averages at 17°C (62°F) with a peak of 33°C (92°F). Notably, October has a lower minimum temperature of 7°C (44°F) compared to April's minimum of 2°C (35°F). However, April experiences more precipitation, totaling 81 mm (3.2 in) over 8 days, compared to October's 50 mm (2.0 in) over the same number of days. Additionally, April's humidity is higher at 86%, compared to October's 76%. For a detailed look at April weather patterns, you can reference Si'an weather in April.
When comparing the weather in October and May, several key differences emerge. October typically enjoys milder temperatures, ranging from a minimum of 7°C (44°F) to a maximum of 34°C (93°F), with an average of 19°C (66°F). In contrast, May tends to be warmer, with temperatures ranging from a minimum of 8°C (47°F) to a peak of 37°C (99°F), and an average of 22°C (71°F).
In terms of precipitation, October sees approximately 50 mm (2.0 in) over about 8 days, while May experiences significantly higher rainfall at 135 mm (5.3 in) across 11 days. The humidity levels also reflect this difference, with October at 76% and May slightly higher at 85%. For more detailed insights on May weather, you can check Si'an weather in May.
When comparing the weather in October and June, several notable differences emerge. October generally has a wider temperature range, with minimums around 7°C (44°F) and maximums reaching up to 34°C (93°F), making it more variable than June, which has milder temperatures ranging from a minimum of 14°C (58°F) to a maximum of 37°C (99°F). Additionally, October experiences significantly less rainfall, averaging 50 mm (2.0 in) over about 8 days, while June sees much higher precipitation, totaling 257 mm (10.1 in) over approximately 15 days. Humidity levels are also slightly lower in October at 76%, compared to June's higher humidity of 85%, which may contribute to the feeling of mugginess during the summer months. For more specific insights about June weather, you can refer to Si'an weather in June.
In October, temperatures tend to be more moderate, with minimums around 7°C (44°F) and maximums reaching 34°C (93°F), averaging 19°C (66°F). The month is accompanied by a relatively low precipitation of 50 mm (2.0 in) over about 8 days, alongside a humidity level of 76%. In contrast, July experiences significantly warmer conditions, featuring minimum temperatures of 20°C (68°F) and maximums that soar to 39°C (102°F), with an average of 28°C (83°F). This month sees a substantial amount of rainfall, totaling 299 mm (11.8 in) across 17 days, contributing to a higher humidity of 90%. For more detailed information about July weather conditions, you can explore Si'an weather in July.
October weather is noticeably cooler than that of August, with minimum temperatures dropping to around 7°C (44°F) compared to August's minimum of 18°C (64°F). The average temperature in October is 19°C (66°F), significantly lower than the warm average of 29°C (84°F) experienced in August. While October sees a maximum temperature of 34°C (93°F), August can reach highs of 38°C (100°F). Additionally, October experiences less precipitation, with 50 mm (2.0 in) over 8 days, in contrast to August's 190 mm (7.5 in) average rainfall spread over 15 days. The humidity in October is also lower at 76%, while August remains quite humid at 88%. For more detailed information about August weather patterns, you can visit this link: Si'an weather in August.
In comparison to September, October experiences cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 34°C (93°F), while September boasts a higher minimum of 13°C (56°F) and peaks at 36°C (98°F). The average temperature in October is lower at 19°C (66°F) compared to September's 25°C (77°F). Additionally, October sees less precipitation, with 50 mm (2.0 in) over 8 days, whereas September accumulates 120 mm (4.7 in) across 12 days. Despite October having a slightly higher humidity level of 76%, the overall weather is more stable and drier than in September. For more details, you can refer to Si'an weather in September.
October weather is characterized by a wider range of temperatures, with minimums around 7°C (44°F) and maximums reaching up to 34°C (93°F), resulting in an average of 19°C (66°F). The month experiences moderate precipitation of 50 mm (2.0 in) over approximately 8 days, coupled with a humidity level of 76%. In contrast, November sees a significant drop in temperature, with minimums dipping to -2°C (28°F) and an average of 13°C (56°F), while maximums reach a milder 28°C (83°F). Precipitation slightly decreases to 45 mm (1.8 in) over the same 8 days, though humidity rises to 84%. For a closer look at November weather specifics, you can visit Si'an weather in November.
October and December exhibit stark contrasts in weather patterns. In October, temperatures are notably warmer, with a minimum of 7°C (44°F) and an average of 19°C (66°F), peaking at 34°C (93°F). The month experiences mild humidity at 76% and sees about 50 mm (2.0 in) of precipitation over 8 days. In contrast, December ushers in much colder conditions, with temperatures ranging from a minimum of -5°C (22°F) to a maximum of 23°C (73°F) and an average of just 7°C (44°F). The precipitation remains fairly similar at 52 mm (2.0 in) over the same number of days, while humidity slightly rises to 77%. For a detailed look at the weather specifics for December, you can check Si'an weather in December.
As October arrives in Si'an, the weather undergoes a notable transformation, bringing a delightful mix of warm days and cool nights. Unlike the sweltering peak summer months, October's temperatures are more moderate, averaging a pleasant 19°C while still reaching maximums of 34°C during the day. The humidity, lingering around 76%, adds a touch of softness to the air, while occasional rainfall—spreading over 8 days with total precipitation of 50 mm—refreshes the landscape. This transitional month invites locals and travelers alike to embrace the beautiful autumn scenery. For more detailed insights, explore the Si'an Climate.