Last updated: August 21, 2025
In August, Xi'an, China experiences a warm and humid climate characterized by maximum temperatures reaching 37°C (99°F), an average of 28°C (84°F), and nighttime lows around 21°C (71°F). The city sees considerable rainfall, with a total precipitation of approximately 192 mm (7.6 in) spread over 14 days, contributing to a humidity level that often hovers around 92%. Visitors should be prepared for muggy days and the potential for sudden showers, making August a unique yet vibrant time to explore Xi'an’s rich history and culture.
In August, Si'an, China, experiences a noticeable warmth that marks it as one of the hottest months of the year. With minimum temperatures averaging around 21°C (71°F) and maximums soaring to 37°C (99°F), the city basks under the summer sun. The average temperature settles at a comfortable 28°C (84°F), providing perfect conditions for outdoor adventures and cultural explorations. As this month serves as a bridge between the sweltering July heat and the cooler September air, the rising temperatures reflect the peak of summer in Si'an, inviting travelers to embrace the vibrant energy of the city during this lively season.
In August, Si'an, China, experiences a significant drop in precipitation compared to the preceding month of July, yet it remains substantial at 192 mm (7.6 in) over 14 days of rain. This month is characterized by a marked decrease from July’s peak of 231 mm, which reflects the region's tendency to experience the heaviest rain in the summer months. The rainfall in August, while still robust, heralds a transition towards a drier season, as seen in the decline leading into September, where precipitation lessens to 142 mm (5.6 in). Overall, the trend shows a peak in summer, with July leading the charge, while August still maintains a notable contribution before tapering off in the subsequent months.
In August, Si'an, China experiences a humidity level of 92%, influenced by the peak of summer. This month continues the trend of high humidity that begins in June, where levels reach 90%, and peaks in July at 95%. Although August sees a slight decline from July's sweltering conditions, it remains among the most humid months of the year. The trend showcases a steady progression from 67% in January to the summer's oppressive highs, illustrating how Si'an transitions from the drier, cooler winter months to the vibrant, humid summer season. As September approaches, humidity levels drop significantly to 79%, hinting at the arrival of autumn and a welcome relief from the summer’s grip.
In August, Si'an, China, experiences an extreme UV Index of 11, mirroring the conditions from July. With a burn time of only 10 minutes, the need for sun protection is crucial during this hot month. The trend leading up to August displays a steady increase in UV exposure, starting with a moderate index of 4 in January and escalating to very high levels by spring. Consistently high figures from April through June maintain a sequence of 10, indicating a significant risk for skin damage without adequate protection. As summer peaks, individuals must remain diligent, following protective measures to enjoy the outdoors safely. For a detailed look at UV levels throughout the year, visit Si'an UV Index.
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August shines brightly in Si'an, China, with an impressive 308 hours of sunshine, marking the peak of summer. This month stands out in stark contrast to the cooler, darker winter months, where January sees only 166 hours of sun. As the year progresses, sunshine hours gradually increase, with spring bringing a noted rise, culminating in the vibrant energy of late summer. Following August, September experiences a decline with 268 hours, hinting at the shift towards autumn. Overall, the trend reveals a clear seasonal pattern, where Si'an basks in its sunniest moments from late spring through summer, creating an inviting atmosphere for outdoor activities and explorations.
In Si'an, China, the chances of sunny weather in August hover around 35%, a modest increase from the preceding months of June and July, which are characterized by their significantly lower probabilities of sunshine at just 28% and 21% respectively. This uptick reflects a gradual escalation in likelihood as summer wanes, giving way to the promise of clearer skies. Interestingly, August stands out as a transitional period, setting the stage for a return to sunnier days in September when the chances rise again to 45%. Overall, while August does not guarantee sunshine, it offers a glimmer of hope for those seeking warm, sunny respite amidst the summer's unpredictable weather patterns.
In Si'an, China, the fascinating ebb and flow of daylight duration unfolds throughout the year, peaking in the summer months and gently receding as autumn approaches. By August, residents enjoy approximately 13 hours of daylight, maintaining the same luminous count as in July. This duration marks the summer's gradual transition, as daylight begins to wane softly towards September, which sees a slight decrease to 12 hours. The trend illustrates a vibrant summer's end, where longer days invite outdoor activities and abundant sunshine, before the days shorten again, creating a rhythmic cycle between the expanse of summer light and the subtle embrace of fall's longer nights.
In August, the wind in Si'an, China, tends to calm down significantly, recording an average speed of 2.9 m/s (7 mph)—the lowest of the year. This marks a noticeable drop from the breezier months of July, where winds picked up to 4.5 m/s (10 mph), and represents part of a broader trend of gradually decreasing wind speeds as summer progresses into late summer and early autumn. Through the spring and early summer months, wind speeds remain relatively steady, hovering around 3.4 m/s (8 mph), but by August, there's a clear shift towards milder breezes. Following August, wind speeds generally see a gradual resurgence in September and October, establishing a rhythmic ebb and flow that characterizes Si'an's wind patterns throughout the year.
Weather in Si'an varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Si'an, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present stark contrasts in weather. In August, temperatures soar, with a minimum of 21°C (71°F) and daytime highs reaching up to 37°C (99°F), while humidity remains high at 92%. The month is also characterized by significant precipitation, averaging 192 mm (7.6 in) over about 14 days of rainfall. In contrast, January brings much colder conditions, with temperatures ranging from a frigid -8°C (17°F) at night to a mild 18°C (64°F) during the day. This month experiences significantly less precipitation, averaging just 47 mm (1.8 in) over 8 days and a lower humidity level of 67%. For those interested in exploring the specifics of January weather, more information can be found here: Si'an weather in January.
August and February present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 21°C (71°F) and can reach a scorching maximum of 37°C (99°F), accompanied by high humidity levels of 92% and substantial rainfall of 192 mm (7.6 inches) over 14 days. In contrast, February experiences a much cooler climate, showcasing a minimum of -5°C (23°F) and a comfortable average of 6°C (43°F), peaking at a mild 24°C (75°F). With only 52 mm (2.0 inches) of precipitation over 8 days and lower humidity at 69%, February provides a refreshing break from the intense summer heat. For more detailed insights into February's weather, check out Si'an weather in February.
August and March represent two very different seasons in terms of weather. In August, temperatures soar with a minimum of 21°C (71°F) and a peak reaching as high as 37°C (99°F), making it one of the warmest months of the year. The high humidity of 92% combined with significant rainfall (192 mm or 7.6 in over 14 days) creates a hot and steamy atmosphere. In contrast, March experiences much cooler temperatures, ranging from a chilly minimum of 0°C (33°F) to a comfortable maximum of 27°C (81°F), with an average temperature of only 11°C (51°F). Precipitation is lighter in March, totaling 56 mm (2.2 in) over about 9 days, and humidity is comparatively lower at 79%. For a closer look at weather specifics in March, you can check Si'an weather in March.
When comparing the weather in August and April, a clear contrast emerges. August typically boasts warmer temperatures, with minimums around 21°C (71°F) and maximums reaching up to 37°C (99°F), while April offers a cooler range, with lows of 4°C (39°F) and highs of 30°C (87°F). Additionally, August experiences significantly higher precipitation, averaging 192 mm (7.6 inches) over 14 days, compared to April's more moderate 70 mm (2.8 inches) across 8 days. Despite both months having high humidity, August's average of 92% slightly surpasses April's 86%. For more details about April's weather, you can check out Si'an weather in April.
When comparing the weather in August and May, it is evident that August is significantly warmer and more humid. August features a minimum temperature of 21°C (71°F) and an average of 28°C (84°F), reaching highs of up to 37°C (99°F), while May has a cooler temperature range, with a minimum of 9°C (49°F) and an average of 21°C (69°F), peaking at 35°C (95°F). Additionally, August experiences more precipitation, with 192 mm (7.6 in) over 14 days, compared to May's 112 mm (4.4 in) over just 9 days. The humidity is also higher in August at 92%, whereas May is slightly lower at 87%. For more details on May weather, check out Si'an weather in May.
In comparing the weather of June and August, we observe distinct differences in temperature and precipitation. August experiences warmer temperatures, with a minimum of 21°C (71°F) and an average of 28°C (84°F), while June has a milder minimum of 16°C (61°F) and an average of 24°C (76°F). Both months share the same maximum temperature of 37°C (99°F), but August boasts significantly higher precipitation at 192 mm (7.6 in) over 14 days, compared to June's 131 mm (5.2 in) over just 10 days. Furthermore, humidity levels are slightly higher in August at 92%, versus June's 90%. For more detailed information, you can check Si'an weather in June.
When comparing the weather in July and August, July tends to be slightly hotter on average, with a maximum temperature of 39°C (103°F) compared to August's high of 37°C (99°F). Both months experience similar average temperatures, around 28°C (82°F in July and 84°F in August). However, July has higher precipitation levels, with 231 mm (9.1 in) over 17 days, while August sees 192 mm (7.6 in) across 14 days. Humidity levels are also notably high in both months, peaking at 95% in July and slightly dropping to 92% in August. For more detailed insights into July’s climate, visit Si'an weather in July.
August experiences warmer temperatures, with minimums around 21°C (71°F) and averages peaking at 28°C (84°F), while September sees a drop in temperature, with minimums falling to 16°C (61°F) and averages around 24°C (76°F). Additionally, August is characterized by higher humidity levels at 92%, compared to September's more comfortable 79%. Precipitation is also heavier in August, totaling 192 mm (7.6 in) over 14 days, while September records 142 mm (5.6 in) spread across 11 days. For more detailed information, check Si'an weather in September.
In August, the weather is characterized by hot temperatures, with a minimum of 21°C (71°F) and an average of 28°C (84°F), peaking at a sweltering 37°C (99°F). This month also experiences significant rainfall, totaling 192 mm (7.6 in) over approximately 14 days, coupled with high humidity levels of 92%, making it feel even hotter and more oppressive.
In contrast, October brings a much cooler and more pleasant climate, with temperatures ranging from a minimum of 8°C (47°F) to an average of 19°C (66°F) and a maximum of 32°C (90°F). Precipitation decreases significantly to 58 mm (2.3 in), falling over just 7 days, and humidity drops to a more comfortable 76%. For a detailed overview of weather conditions in October, you can refer to Si'an weather in October.
August and November present a stark contrast in weather conditions. August is characterized by high temperatures, typically ranging from a minimum of 21°C (71°F) to a scorching maximum of 37°C (99°F), with an average of 28°C (84°F). This month also experiences significant rainfall, with about 192 mm (7.6 in) spread over 14 days, contributing to a high humidity level of 92%. In contrast, November ushers in cooler temperatures, with a minimum of 1°C (34°F) and an average of 13°C (56°F), peaking at 27°C (81°F). Rainfall is considerably lighter in November, totaling only 53 mm (2.1 in) over 7 days, and the humidity drops to 77%. For more detailed insights into the weather during this month, you can check out Si'an weather in November.
August and December present strikingly contrasting weather conditions. In August, temperatures soar with a minimum of 21°C (71°F) and can reach a sweltering maximum of 37°C (99°F), accompanied by high humidity levels of 92%. Precipitation is also significant, averaging 192 mm (7.6 in) across 14 days, making it a particularly humid month. In contrast, December brings a chill, with temperatures ranging from a frigid minimum of -7°C (20°F) to a mild maximum of 20°C (68°F), and an average of just 7°C (45°F). This month experiences much less rain, with only 44 mm (1.7 in) falling over 8 days and lower humidity at 73%. For more details on December weather, you can visit Si'an weather in December.
In August, Si'an experiences a distinct shift in weather compared to the cooler months. With maximum temperatures soaring to 37°C, the month is notably warmer, creating a backdrop of high humidity at 92% that can make the heat feel even more intense. Rainfall is common, with approximately 14 days of precipitation totaling around 192 mm, providing a refreshing contrast to the sweltering heat. As summer reaches its peak, this vibrant climate invites changes in daily life and activities, making it an exciting time to witness the region in full bloom. For more detailed insights on weather patterns, explore Si'an Climate.