Last updated: August 21, 2025
Experience the vibrant August weather in Si'an, China, where daytime temperatures can soar to a maximum of 38°C (100°F), offering a balmy average of 29°C (84°F). As summer unfolds, evenings bring a refreshing respite with lows of 18°C (64°F). Visitors should prepare for frequent rain, as the month witnesses about 190 mm (7.5 in) of precipitation over approximately 15 days, resulting in a humid atmosphere with levels reaching 88%. Embrace the warmth and occasional showers as you explore this culturally rich city during its lively August days.
In Si'an, China, August is marked by warm temperatures as the summer reaches its peak. The month records a minimum of 18°C (64°F), climbing to an average of 29°C (84°F) and a maximum of 38°C (100°F). This notable warmth reflects a steady rise throughout the summer, following July's high averages, and showcases the city's temperate climate. As the season changes and cooler months approach, temperatures will gradually begin to drop, yet August remains a vibrant mix of heat and activity, perfect for exploring the city's rich history and culture under the sun.
In August, Si'an experiences a significant shift in its precipitation patterns, with rainfall totaling 190 mm (7.5 in) over 15 days. This month marks a departure from the deluges of July, where the city saw a peak of 299 mm (11.8 in) spread across 17 days, indicating a gradual tapering of the summer monsoon. However, August remains among the wetter months, contributing to nearly a third of the annual rainfall total. The decline in precipitation from July reflects a subtle transition towards the drier months ahead, as September sees a further decrease in rainfall to 120 mm (4.7 in). This trend underscores how Si'an's climate is characterized by a pronounced wet season, gradually easing into a drier autumn.
In August, Si'an, China, experiences a notable drop in humidity, settling at 88%, slightly down from the peak of 90% seen in July. The steady rise in humidity from January through July culminates in the height of summer, reflecting the region's warm climate. However, as the month progresses, there's a hint of relief from the intense moisture, signifying a transition towards the drier months ahead. Comparatively, this August humidity is lower than the levels recorded in March through July, yet still higher than the 75% observed in September, indicating a gradual shift towards autumn. Overall, the summer months in Si'an showcase a significant increase in humidity levels, establishing a tropical essence before the crispness of fall arrives.
August in Si'an, China, marks a peak in UV intensity, with an UV Index of 11, categorized as extreme. This mirrors the relentless summer pattern seen since May, where the burning sun demands heightened caution. With just 10 minutes of unprotected exposure to the sun potentially leading to skin damage, it's crucial for residents and visitors alike to adopt protective measures. As summer transitions to autumn, the UV Index begins to taper off, easing to 10 in September. For ongoing updates and detailed daily forecasts, check out the Si'an UV Index.
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In Si'an, China, the sun shines brightly, especially during the peak summer months. August stands out with a remarkable 300 hours of sunshine, making it the sunniest month of the year. This vibrant month is a culmination of a steady increase in sunlight, starting from 152 hours in January and gradually rising through the spring and summer. May and July also see significant sunshine, with 278 and 282 hours respectively, hinting at an expansive summer season. As fall approaches, sunlight begins to taper off with 258 hours in September, yet the year still maintains generous hours of sunshine throughout autumn and winter. Overall, Si'an's sunshine trend depicts a glorious summer peak, inviting outdoor adventures and vibrant city life during the sun-drenched days of August.
In Si'an, China, the likelihood of sunny weather in August sees a slight uptick, with a 31% chance of clear skies, contrasting with the notably lower probabilities through the summer months. From a peak of 50% in January, the sunny prospects typically dwindle to as low as 17% in July before beginning to recover in late summer. This trend indicates that while August does not guarantee abundant sunshine, it offers a welcome improvement, aligning with the upward rise that follows the summer lows. As the region transitions into September, the chances of enjoying sunny days increase further to 48%, suggesting that outdoor enthusiasts may find August to be a pleasant window for exploration in Si'an.
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 winds in Si'an, China typically soften to an average speed of 2.1 m/s (5 mph), marking a gentle retreat from the breezier summer months. While July boasts the highest wind speed at 2.9 m/s (7 mph), the transition into August signifies a notable calmness as the heat peaks. This trend of decreasing wind speed continues into September as it rises slightly to 2.5 m/s (6 mph), suggesting a gradual return to more stable conditions as the summer fades. Overall, the data highlights a seasonal ebb and flow, with summer winds giving way to a serene August ambiance, perfect for enjoying the picturesque landscapes of Si'an.
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.
In August, Si'an experiences warm and humid weather, with average temperatures reaching 29°C (84°F) and highs that can soar up to 38°C (100°F). The month is marked by significant rainfall, averaging 190 mm (7.5 in) over 15 days, contributing to a high humidity level of 88%. In stark contrast, January brings cold temperatures, with an average of just 5°C (41°F) and lows plummeting to -11°C (13°F). Precipitation in January is lower at 68 mm (2.7 in) and occurs over only 8 days, accompanied by a humidity level of 70%. For more detailed information on January weather in Si'an, you can visit Si'an weather in January.
August and February present starkly contrasting weather patterns. In August, temperatures soar with a minimum of 18°C (64°F), an average of 29°C (84°F), and a maximum reaching up to 38°C (100°F). This month is characterized by high humidity at 88% and significant precipitation, totaling 190 mm (7.5 in) over 15 days. In contrast, February features a much cooler climate, with temperatures ranging from a minimum of -8°C (18°F) to a maximum of 26°C (79°F) and an average of just 6°C (44°F). The precipitation in February is lower at 71 mm (2.8 in) over 10 days, accompanied by a humidity level of 73%. For more detailed information about February weather, you can visit Si'an weather in February.
In August, the weather is significantly warmer and more humid compared to March, with average temperatures soaring to 29°C (84°F) and peak highs reaching up to 38°C (100°F). The month is characterized by substantial rainfall, totaling 190 mm (7.5 in) across 15 days, creating a very humid atmosphere with levels around 88%. In contrast, March experiences much cooler weather, with temperatures ranging from a chilly minimum of -1°C (30°F) to a comfortable maximum of 29°C (84°F). Precipitation in March is lower, averaging 106 mm (4.2 in) over 13 days, and humidity levels are slightly less at 82%. For more specific insights into March's weather patterns, you can visit Si'an weather in March.
The weather in August is notably warmer and more humid compared to April. In August, temperatures range from a minimum of 18°C (64°F) to an average of 29°C (84°F), peaking at a sweltering 38°C (100°F), while April sees milder conditions with temperatures fluctuating between 2°C (35°F) and 33°C (92°F), with an average of 17°C (62°F). Additionally, August experiences significantly higher precipitation, totaling 190 mm (7.5 in) over approximately 15 rainy days, compared to April's 81 mm (3.2 in) over just 8 days. Despite the higher temperatures in August, humidity levels are strikingly similar, with both months hovering around 86-88%. For a more detailed look at the April weather, you can visit Si'an weather in April.
August and May present a stark contrast in weather patterns. August boasts a higher average temperature of 29°C (84°F) with maximums soaring up to 38°C (100°F), while May's average temperature is a cooler 22°C (71°F), peaking at 37°C (99°F). Although May has a slightly lower humidity level at 85% compared to August's 88%, it tends to experience less rainfall, receiving 135 mm (5.3 in) over 11 days versus August's 190 mm (7.5 in) across 15 days. For those interested in exploring the weather nuances of May, check out Si'an weather in May.
When comparing the weather in August to that in June, August typically features higher average temperatures, with a minimum of 18°C (64°F) and an average of 29°C (84°F), while June starts at a slightly cooler minimum of 14°C (58°F) and has an average of 25°C (77°F). Although both months experience a similar number of rainy days (15), June sees more overall precipitation at 257 mm (10.1 in) compared to August's 190 mm (7.5 in). Humidity levels are quite high in both months, with August at 88% and June slightly lower at 85%. For more specific details on June's weather, you can check Si'an weather in June.
In comparing the weather between July and August, we see some notable differences. July typically experiences slightly warmer temperatures, with an average of 28°C (83°F) and maximums reaching up to 39°C (102°F). In contrast, August sees a slightly lower average temperature of 29°C (84°F), but it has a minimum temperature of 18°C (64°F), offering cooler nights. Precipitation also varies, with July receiving more rainfall at 299 mm (11.8 in) over 17 days compared to August's 190 mm (7.5 in) over 15 days. Humidity remains high in both months, with July at 90% and August at 88%. For more detailed information about July's weather, check out Si'an weather in July.
August's weather is characterized by significantly warmer temperatures, with an average of 29°C (84°F) and maximums peaking at 38°C (100°F). In contrast, September sees a noticeable drop, averaging 25°C (77°F), with maximum temperatures reaching 36°C (98°F). While both months experience fairly high humidity, August is particularly humid at 88%, compared to September's 75%. Precipitation is also higher in August, with 190 mm (7.5 in) across 15 days, whereas September records 120 mm (4.7 in) over 12 days. For a detailed look at September weather, you can check out Si'an weather in September.
August and October present stark contrasts in weather patterns. In August, temperatures are quite high, with minimums around 18°C (64°F) and average highs reaching up to 38°C (100°F), accompanied by high humidity levels at 88%. This month also sees significant precipitation, averaging 190 mm (7.5 inches) over 15 days. In contrast, October experiences a much cooler climate, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 34°C (93°F) and an average of 19°C (66°F). Precipitation decreases substantially to 50 mm (2.0 inches) over just 8 days, and humidity drops to 76%. For a more detailed look at October weather, you can check Si'an weather in October.
In August, the weather is characterized by high temperatures, with a minimum of 18°C (64°F) and an average of 29°C (84°F), peaking at a scorching 38°C (100°F). The month is also marked by significant precipitation, receiving around 190 mm (7.5 in) over 15 days, contributing to high humidity levels at 88%. In contrast, November brings a much cooler climate, with temperatures ranging from a minimum of -2°C (28°F) to an average of 13°C (56°F), reaching a maximum of 28°C (83°F). The rainfall is considerably less, totaling only 45 mm (1.8 in) over 8 days, and the humidity drops slightly to 84%. This stark shift in weather highlights the transition from the sweltering heat of summer to the crisp chill of late autumn. For more detailed insights into the weather during this month, you can explore Si'an weather in November.
August and December present stark contrasts in weather. August typically boasts warm temperatures, with averages around 29°C (84°F) and highs reaching up to 38°C (100°F), accompanied by high humidity at 88%. The month also experiences substantial rainfall, with around 190 mm (7.5 in) over 15 days. In contrast, December features much cooler temperatures, averaging only 7°C (44°F), and highs reaching 23°C (73°F). The precipitation is significantly lower in December, totaling just 52 mm (2.0 in) across 8 days with a humidity level of 77%. For more specific details, check out Si'an weather in December.
In August, Si'an experiences its warmest weather of the year, with high humidity levels making the heat feel even more intense. Unlike the milder temperatures of earlier months, August often sees peaks around 38°C (100°F) and an average of 29°C (84°F), creating a sultry atmosphere. With approximately 15 days of rainfall contributing to a total precipitation of 190 mm, the month stands out for its frequent, albeit brief, showers that provide relief from the heat. This combination of warmth and humidity sets August apart from the rest of the year, shaping a distinctive climate that is both challenging and invigorating. For more details on the weather patterns, visit Si'an Climate.