Last updated: August 21, 2025
August in Nanjing, China is characterized by hot and humid conditions, with an average temperature of 29°C (84°F), peaking at a sweltering 38°C (100°F). Visitors can expect a minimum temperature of about 21°C (71°F) during the cooler nights. The month sees considerable precipitation, totaling 189 mm (7.4 in) over approximately 14 rainy days, contributing to the high humidity levels that often reach 88%. Whether you're exploring historical sites or enjoying local cuisine, be prepared for the heat and occasional showers typical of this vibrant summer month.
In Nanjing, China, August ushers in the peak of summer, with temperatures soaring to a maximum of 38°C (100°F), creating a sweltering ambiance that's perfect for seeking shade or enjoying cool treats. The month starts off with a minimum temperature of 21°C (71°F), ensuring that even the nights remain warm and balmy. With an average temperature around 29°C (84°F), August stands out as one of the hottest months of the year, reflecting a steady increase from the cooler spring months. This pattern highlights a transition from the mild temperatures of early summer in June and July to the intense warmth characteristic of late summer. As Nanjing approaches autumn, the gradually cooling trend begins to take shape, making way for relief in September, but for now, the heat of August reigns supreme.
In August, Nanjing experiences a significant dip in precipitation compared to the preceding month, receiving 189 mm (7.4 in) of rainfall over 14 days. This peak is part of a broader trend where summer months are marked by substantial rainfall; for instance, July registers the highest amount at 228 mm (9.0 in). Unlike the earlier months, which see regular precipitation, August strikes a balance with fewer rainy days while still delivering considerable totals. This pattern of intense rainfall during the summer, followed by a marked decline in September, highlights the city's seasonal climate dynamics as it transitions into a drier autumn.
As summer reaches its zenith in Nanjing, August brings with it an average humidity of 88%, slightly dipping from the peak of 90% seen in July. This high level of humidity is a continuation of the trend observed over the warmer months, where values surged from 70% in January to a steamy 86% in April, maintaining a comfortable yet damp environment suitable for lush greenery. Following August, humidity levels begin to decrease significantly, dropping to 75% in September as the city transitions into autumn. Overall, Nanjing's humidity seems to follow a clear seasonal pattern, peaking in the heart of summer and gradually easing as the year progresses.
As summer peak heat lingers in August, Nanjing experiences a very high UV Index of 10, similar to the previous months of June and July, where an extreme rating of 11 was recorded. With a burn time of just 15 minutes, this month serves as a reminder to take sun safety seriously. The trend reveals that from March to August, the UV Index remains mostly very high to extreme, making it crucial for residents and visitors alike to protect their skin during outdoor activities. With the sun still glaring throughout the month, be sure to check the daily UV Index and stay informed at Nanjing UV Index.
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In August, Nanjing basks in a remarkable 296 hours of sunshine, peaking as the sunniest month of the year. This bright stretch follows a steady climb from 159 hours in January to a vibrant 287 hours in July, showcasing the city's warm embrace of summer. As the days lengthen progressively from February's 214 hours to May's 275 hours, it's evident that summer’s golden glow is a draw for both locals and visitors. However, as autumn approaches, sunshine begins to wane, tapering to 254 hours in September and gradually decreasing through the fall months. This trend not only highlights Nanjing's rich seasonal shifts but also invites everyone to savor every sun-drenched moment before the cool embrace of winter settles in.
In August, Nanjing experiences a 35% chance of sunny weather, which marks a slight uptick from the sunniest months earlier in the year. While the summer months, particularly July, show a notable decline in sunny days with only 24%, August provides a refreshing transition towards fall, echoing the increased sunshine that arrives again in September at 49%. This pattern indicates that while the summer heat may limit sunny days earlier, the approach of autumn begins to foster a more favorable climate, enhancing the likelihood of clear blue skies and inviting outdoor activities as the month progresses.
As August unfolds in Nanjing, the city enjoys 13 hours of daylight, a continuation of the long summer days experienced throughout June and July. This month marks a peak in daylight duration before the gradual decline begins, as September brings slightly shorter days. In the broader context, the year begins with a modest 10 hours of daylight in January, which gradually increases to a sunny peak in summer. The progression from the winter months to the height of summer highlights the vibrant shift in Nanjing’s daylight, allowing residents and visitors alike to savor the fullness of the season before transitioning back to the cozy embrace of shorter days in the fall.
In August, Nanjing experiences a gentle breeze with an average wind speed of only 2.4 m/s (5 mph), making it one of the calmest months of the year. This subtle drop from the breezier July, which boasted 3.4 m/s (8 mph), signifies a shift towards the stillness of late summer. It’s clear that as the hottest days of summer linger, the winds tend to wane, contributing to a hazy atmosphere as the city transitions into the more moderate autumn months ahead. Interestingly, the overall trend reveals a gradual decrease in wind speed throughout the summer, peaking in July, before rising slightly again in September and October, hinting at a cooling breeze returning with the change of seasons. This rhythmic fluctuation captures the serene essence of summer days in Nanjing.
Weather in Nanjing varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Nanjing, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present starkly contrasting weather conditions. In August, temperatures soar with a minimum of 21°C (71°F), averaging 29°C (84°F), and peaking at a scorching 38°C (100°F). The month is characterized by high humidity at 88%, along with significant rainfall of 189 mm (7.4 in) spread over 14 days. In sharp contrast, January features much cooler temperatures, with a minimum of -10°C (13°F), an average of 4°C (40°F), and a maximum of 18°C (64°F). Precipitation during this month is relatively low at 53 mm (2.1 in) over 8 days, and humidity stands at 70%. For more details on the weather specifics, you can check this link: Nanjing weather in January.
August and February present starkly contrasting weather patterns. In August, temperatures soar with a minimum of 21°C (71°F) and an average of 29°C (84°F), peaking at a sweltering 38°C (100°F). The month is marked by high humidity at 88% and significant rainfall, with 189 mm (7.4 in) of precipitation spread over 14 days. In contrast, February experiences much cooler conditions, with temperatures ranging from a chilly minimum of -11°C (13°F) to a mild maximum of 26°C (79°F), averaging just 6°C (43°F). Precipitation is lower in February, totaling 52 mm (2.0 in) over 9 days, and the humidity dips to 73%. For more insights on the winter climate, explore Nanjing weather in February.
When comparing the weather in August and March, a stark contrast emerges. August is characterized by high temperatures, with a minimum of 21°C (71°F) and an average reaching 29°C (84°F), peaking at a sizzling 38°C (100°F). The humidity is elevated at 88%, contributing to a muggy atmosphere, along with significant rainfall totaling 189 mm (7.4 in) over approximately 14 days. In contrast, March experiences much cooler weather, starting with a chilly minimum of 0°C (31°F) and an average temperature of 12°C (54°F), with lows reaching 29°C (84°F) on warmer days. The humidity is slightly lower at 82%, and precipitation is considerably less, with 66 mm (2.6 in) falling across about 10 days. For more details on March weather, visit Nanjing weather in March.
When comparing the weather in August and April, one can observe significant differences in temperature and precipitation. August is characterized by much warmer temperatures, with minimums around 21°C (71°F) and averages reaching 29°C (84°F), peaking at a sweltering 38°C (100°F). In contrast, April experiences cooler conditions, with minimums of 5°C (41°F) and average highs of only 17°C (62°F), although it can still reach up to 32°C (90°F) on warmer days. Additionally, August is notably more humid, with 88% humidity and 189 mm (7.4 in) of precipitation spread across 14 days, while April sees lower precipitation levels of 69 mm (2.7 in) over 9 days and a slightly lower humidity of 86%. For more detailed information, you can check Nanjing weather in April.
When comparing the weather in August and May, significant differences emerge. August is characterized by much warmer temperatures, with a minimum of 21°C (71°F) and an average high reaching a scorching 38°C (100°F), while May remains cooler with a minimum of 10°C (51°F) and an average high of 36°C (96°F). Additionally, August experiences higher humidity levels at 88%, compared to May's 85%. Precipitation is also more prominent in August, with 189 mm (7.4 in) over 14 days, whereas May sees 143 mm (5.6 in) across 9 days. For more detailed information on May weather, you can visit Nanjing weather in May.
In comparing the weather of August and June, it's clear that August tends to be hotter and more humid. August experiences an average temperature of 29°C (84°F), peaking at a scorching 38°C (100°F), while June averages 26°C (78°F) with a maximum of 36°C (96°F). Precipitation levels are also higher in August, with 189 mm (7.4 in) over 14 days, compared to June's 156 mm (6.2 in) over just 10 days. The humidity in August is slightly elevated at 88%, while June has a more comfortable 85%. For more detailed insights, you can check Nanjing weather in June.
In comparison to July, August experiences slightly warmer temperatures, with a minimum of 21°C (71°F) and an average of 29°C (84°F), while July's temperatures range from a minimum of 19°C (67°F) to an average of 28°C (83°F). Both months reach similar maximum temperatures, with August peaking at 38°C (100°F) and July at 38°C (101°F). However, August sees less precipitation at 189 mm (7.4 in) over 14 days compared to July's 228 mm (9.0 in) over 18 days. Humidity remains high in both months, with August at 88% and July slightly higher at 90%. For a more detailed look at July's conditions, you can visit Nanjing weather in July.
August and September present a noticeable shift in weather conditions. In August, temperatures soar with a minimum of 21°C (71°F) and an average of 29°C (84°F), reaching highs up to 38°C (100°F). This month experiences significant rainfall, totaling 189 mm (7.4 in) over 14 days, coupled with high humidity at 88%. In contrast, September sees a decline in temperature, with a minimum of 15°C (60°F) and an average of 24°C (76°F), peaking at 36°C (97°F). Rainfall in September is also reduced to 86 mm (3.4 in) over 10 days, and humidity drops to a more comfortable 75%. For more detailed information, check out Nanjing weather in September.
August and October present a striking contrast in weather conditions. August typically boasts high temperatures, ranging from a minimum of 21°C (71°F) to a scorching maximum of 38°C (100°F), complemented by an average temperature of 29°C (84°F). However, it also brings significant rainfall, with 189 mm (7.4 in) falling over 14 days, resulting in a high humidity level of 88%. In contrast, October experiences a cooler climate, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 36°C (97°F) and a more temperate average of 18°C (65°F). The month sees considerably less rain, accumulating only 54 mm (2.1 in) over 7 days and reducing humidity to 76%. For more detailed insights on October weather, you can check this link: Nanjing weather in October.
August and November exhibit stark contrasts in weather patterns. August typically boasts warm temperatures, with a minimum of 21°C (71°F) and an average high of 29°C (84°F), often peaking at a scorching 38°C (100°F). In contrast, November sees much cooler temperatures, with lows around 0°C (32°F) and an average of only 13°C (55°F), while the maximum reaches 28°C (83°F). Additionally, August is characterized by significant rainfall, totaling 189 mm (7.4 in) over 14 days, compared to November's much lighter 44 mm (1.7 in) spread over just 6 days. Humidity levels remain relatively high in both months, at 88% in August and 84% in November. For more detailed information, check out Nanjing weather in November.
August and December present strikingly different weather conditions. In August, temperatures soar with a minimum of 21°C (71°F) and can reach a maximum of 38°C (100°F), accompanied by high humidity at 88% and significant rainfall of 189 mm (7.4 in) over 14 days. In contrast, December ushers in a stark chill, with temperatures ranging from a frigid -7°C (20°F) at night to a milder 20°C (68°F) during the day. Precipitation is much lighter in December, totaling only 40 mm (1.6 in) over 7 days, and humidity decreases to 77%. For more detailed information, check Nanjing weather in December.
In August, Nanjing experiences its hottest and most humid weather of the year, characterized by sweltering temperatures that often soar above 38°C (100°F). This month stands in stark contrast to the cooler, dryer conditions of preceding months, as the average temperature settles around 29°C (84°F) and nighttime lows provide any relief. With approximately 14 days of rain, contributing to a total precipitation of around 189 mm (7.4 in), the air feels exceptionally muggy, making outdoor activities less inviting. Visitors should be prepared for the intensity of this summer month, which is undeniably a vivid testament to Nanjing's tropical climate. To learn more about the weather patterns throughout the year, check out Nanjing Climate.