Last updated: August 21, 2025
July in Nanjing, China is characterized by hot and humid conditions that can be both invigorating and challenging. The temperature soars with a maximum of 39°C (103°F), while the average hovers around a steamy 28°C (83°F), and the nights offer a mild 21°C (70°F) respite. Unfortunately, the region experiences significant rainfall this month, totaling 98 mm (3.9 in) across 16 days, leading to an average humidity of 89%. This combination of heat and moisture creates a tropical atmosphere, perfect for those who thrive in summer’s embrace while reminding visitors to stay hydrated and prepared for sudden showers.
In July, Nanjing, China, experiences the peak of summer, with temperatures showcasing a significant rise. The minimum temperature hovers around 21°C (70°F), while the average settles at a toasty 28°C (83°F), and can soar to a blistering 39°C (103°F) on the hottest days. This month marks a distinct shift from the milder June, where the temperatures start ramping up, signaling the height of the heatwave season. As the city basks under the sun, July's warmth makes it ideal for enjoying shaded parks or cooling off with refreshing summer treats. However, with humidity often high, it's also wise to stay hydrated and seek indoor respite during the peak temperature hours.
In Nanjing, July witnesses a noticeable shift in precipitation patterns, with 98 mm (about 3.9 inches) of rainfall spread over 16 days. While this marks a decrease from the deluge of June, which recorded 258 mm of rain, the month still remains fairly wet compared to earlier in the year. The rainfall in July, paired with the 16 precipitation days, suggests a balance between humid summer days and brief, refreshing showers, making it a key month in the city's subtropical climate. This mid-summer dip precedes a resurgence in rainfall with August expected to bring more substantial totals, highlighting the dynamic weather trends characteristic of Nanjing's climate.
In July, Nanjing experiences its peak humidity at an impressive 89%, making this month one of the most sweltering and muggy times of the year. The trend leading up to July shows a steady increase, with humidity rising from 63% in January to 85% by May. June maintains high moisture levels at 83%, setting the stage for the humidity peak of July before gradually declining in August to 88%. This humid climate is indicative of the region's subtropical weather patterns, which brighten up the hot summer months yet may pose challenges for those unaccustomed to such stifling conditions. As summer fades into September, the humidity swings back down to 62%, offering a refreshing contrast to the preceding months.
In July, Nanjing experiences intense ultraviolet (UV) radiation with a consistent UV Index of 13, categorized as extreme. This trend of escalating UV intensity that began in February and peaked over the summer months means that residents and visitors alike must take caution, as the recommended burn time is a mere 10 minutes. The July UV Index mirrors that of the preceding months, including May and June, indicating a relentless sun that poses heightened risks for skin damage. As such, protective measures are crucial during this time. To stay informed about UV levels and plan accordingly, explore the details on the Nanjing UV Index.
UV Risk Categories
In Nanjing, China, the month of July shines brightly with a stunning 311 hours of glorious sunshine, marking the pinnacle of summer's radiance. This vibrant month stands out against the backdrop of the year, where sunlight steadily increases from 196 hours in January to July's peak, before gradually tapering off into August and September with 309 and 286 hours respectively. The trend reveals a delightful progression, where the sun-drenched days of spring and summer accumulate warmth, culminating in July’s exceptional luminosity. Each month leading up to July shows a steady climb in sunlight, particularly notable in May's 282 hours and June's 253 hours, all paving the way for a summer that’s nothing short of spectacular. As autumn approaches, Nanjing retains its sun-kissed allure, but July remains the crown jewel of the year for those who bask in its brilliance.
In Nanjing, China, July offers a 33% chance of sunny weather, marking a notable recovery from the preceding months, which trend significantly lower—with June dipping to just 14%. This uptick in sunny likelihood signifies that while the early summer can be quite overcast, July stands out as a rare window of opportunity for sunshine before the heavier cloud cover returns in August at only 16%. Interestingly, as we move toward the year’s end, the likelihood of clear skies begins to rebound again in September (53%), hinting at an intriguing seasonal cycle where summer's sun is fleeting but cherished. Overall, July in Nanjing presents a mixed bag, inviting both optimism and a touch of unpredictability in the quest for sunny days.
In Nanjing, China, the daylight duration experiences a gradual progression as the year unfolds. Starting from 10 hours in January, the days lengthen impressively, reaching 13 hours by May and maintaining this vibrant daylight until the end of July. This peak of summer sunshine is particularly inviting, fostering an atmosphere of warmth and activity. As August approaches, the daylight begins to wane slightly, settling back to 12 hours. This cyclical pattern showcases the rhythm of the seasons, with longer days in the warmer months delivering a significant energy boost before transitioning back to shorter daylight hours as autumn sets in.
In July, Nanjing experiences a gentle breeze with an average wind speed of 2.1 m/s (5 mph), slightly lower than the earlier summer months. This mild wind serves as a refreshing contrast to the rising temperatures, creating a comfortable atmosphere for both locals and visitors. As the season progresses, wind speeds typically decrease, with August showing a further dip to 1.7 m/s (4 mph), suggesting a trend of calmer days leading into late summer. In contrast, the year starts off with a brisker pace, peaking at 2.9 m/s (6 mph) in October, highlighting the dynamic shifts in Nanjing’s wind patterns throughout the year.
Weather in Nanjing varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Nanjing, focusing on differences in temperature, rainfall, humidity, and UV levels.
July and January present a stark contrast in weather conditions. In July, temperatures soar, with lows around 21°C (70°F) and highs reaching up to 39°C (103°F). The month is characterized by high humidity at 89% and frequent rain, totaling 98 mm (3.9 in) over 16 days. Conversely, January offers a much cooler climate, with minimum temperatures diving to -2°C (29°F) and maximums peaking at 26°C (78°F). This winter month is relatively dry, featuring only 43 mm (1.7 in) of precipitation across just 6 days, and the humidity drops to a more manageable 63%. For more details, you can refer to Nanjing weather in January.
July and February in Nanjing present a striking contrast in weather. July boasts warm temperatures, ranging from a minimum of 21°C (70°F) to a scorching maximum of 39°C (103°F), accompanied by high humidity at 89%. Despite the warmth, July experiences significant rainfall, with 98 mm over 16 days. In contrast, February is much cooler, with temperatures fluctuating from a minimum of -2°C (29°F) to a maximum of 28°C (82°F), and an average of 11°C (52°F). While February has less precipitation at 82 mm over 9 days, the humidity is notably lower at 66%. For more insights on February's weather in Nanjing, you can check out Nanjing weather in February.
When comparing the weather in July and March, it's clear they present stark contrasts. July boasts much warmer temperatures, with an average of 28°C (83°F) and maximums reaching up to 39°C (103°F), along with high humidity levels at 89%. This month also sees considerable rainfall, totaling 98 mm (3.9 in) over 16 days. In contrast, March offers cooler conditions, with an average temperature of 16°C (61°F) and maximums of 30°C (87°F). Although March has higher total precipitation at 162 mm (6.4 in) across 17 days, the humidity sits lower at 77%. For more detailed insights about the climate during this month, you can check out Nanjing weather in March.
When comparing the weather in July and April, notable differences emerge. July offers a warmer climate with an average temperature of 28°C (83°F) and a maximum that can reach up to 39°C (103°F). In contrast, April's temperatures are significantly cooler, averaging 19°C (67°F) and peaking at 31°C (88°F). Precipitation is also more pronounced in April, with 168 mm (6.6 in) falling over 17 days, compared to July's 98 mm (3.9 in) spread over 16 days. Additionally, July's humidity reaches a high of 89%, making it feel quite muggy, while April's humidity is a lower 73%. For more detailed insights into April's weather, check out Nanjing weather in April.
When comparing the weather in July and May, we see significant differences in temperature and precipitation. July tends to be much warmer, with minimum temperatures around 21°C (70°F) and averages reaching up to 28°C (83°F), while May has cooler temperatures, featuring a minimum of 11°C (53°F) and an average of 24°C (75°F). The maximum temperatures also demonstrate this difference, with July peaking at 39°C (103°F) compared to May's maximum of 34°C (94°F). On the precipitation front, May experiences a higher total with 171 mm (6.7 in) over 19 days, compared to July's 98 mm (3.9 in) across 16 days, suggesting that while May is wetter, July is both hotter and more humid at 89%. For a detailed look at May's weather, you can check Nanjing weather in May.
In comparing the weather between June and July, July tends to be hotter, with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 39°C (103°F), compared to June's range of 18°C (64°F) to 34°C (94°F). Additionally, July experiences slightly less precipitation at 98 mm (3.9 in) over 16 days, while June sees significantly more rain, accumulating 258 mm (10.1 in) across 21 days. Humidity levels are also higher in July at 89%, compared to June's 83%. For a detailed overview of June weather, you can visit Nanjing weather in June.
In comparing the weather of July and August, July tends to be hotter, with average temperatures reaching 28°C (83°F) and maximums soaring up to 39°C (103°F). In contrast, August sees a slight decrease in maximum temperatures, peaking at 37°C (100°F), while maintaining a similar average of 28°C (82°F). Both months experience high humidity, with July at 89% and August slightly lower at 88%. However, August is notably wetter, receiving more precipitation at 152 mm (6.0 in) over 20 days compared to July's 98 mm (3.9 in) across 16 days. For more specific insights, you can check out Nanjing weather in August.
July and September present distinct weather patterns, showcasing the transition from summer to early autumn. In July, temperatures soar with a minimum of 21°C (70°F) and an average high around 28°C (83°F), peaking at a scorching 39°C (103°F). The month also experiences considerable rainfall, totaling 98 mm (3.9 in) over 16 days, coupled with high humidity levels at 89%, making it feel quite muggy. In contrast, September sees milder conditions, with minimum temperatures dropping to 17°C (63°F) and an average high of 26°C (79°F), reaching up to 38°C (100°F). This month receives slightly more precipitation at 108 mm (4.3 in) over 15 days, but the humidity is notably lower at 62%, offering a more comfortable atmosphere overall. For detailed insights on September weather in Nanjing, you can visit Nanjing weather in September.
In comparing July and October weather, July is characterized by hot and humid conditions, with temperatures ranging from a minimum of 21°C (70°F) to a scorching maximum of 39°C (103°F). The month experiences considerable precipitation, totaling 98 mm (3.9 in) over 16 days, contributing to its high humidity level of 89%. In contrast, October offers a much cooler climate, featuring a minimum temperature of 11°C (52°F) and a comfortable average of 21°C (70°F), with a maximum reaching 36°C (96°F). The precipitation drops to 50 mm (2.0 in) across just 6 days, and the humidity decreases significantly to 56%. For more details, you can explore Nanjing weather in October.
July and November present striking contrasts in weather. In July, temperatures soar with a minimum of 21°C (70°F) and can reach up to 39°C (103°F), making it the hottest month of the year. The humidity is notably high at 89%, and the region experiences substantial rainfall with 98 mm (3.9 in) over 16 rainy days. In contrast, November enjoys much cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 30°C (87°F). The monthly average is a comfortable 16°C (62°F), accompanied by significantly less precipitation at 45 mm (1.8 in) over just 8 days, and lower humidity levels at 63%. For more detailed insights, visit Nanjing weather in November.
In July, Nanjing experiences sweltering heat with average temperatures around 28°C (83°F) and maximums reaching up to 39°C (103°F), accompanied by high humidity of 89%. This summer month also sees significant rainfall, totaling 98 mm (3.9 in) over 16 days, making it a moist and muggy time of year. In contrast, December brings a refreshing chill, with temperatures ranging from a minimum of 0°C (32°F) to a comfortable average of 11°C (52°F) and maximums around 26°C (79°F). The winter month is much drier, receiving only 31 mm (1.2 in) of rain over 5 days and boasting lower humidity levels at 70%. For more detailed information, check out Nanjing weather in December.
In July, Nanjing experiences its peak summer heat, with steamy temperatures consistently soaring, contrasting sharply with the milder months that precede and follow it. The average warmth invites a mix of sun-drenched days and intermittent rain, with significant humidity adding to the stickiness of the air. This month witnesses the highest frequency of precipitation, making it a lush and vibrant time for the region. While July’s sweltering conditions might deter some outdoor activities, it's undoubtedly a month that showcases Nanjing's unique climatic character. For a deeper insight into Nanjing's weather all year round, visit Nanjing Climate.