Last updated: August 21, 2025
September in Tianjin, China, offers a delightful transition from the sweltering summer heat to cooler autumn breezes. With a maximum temperature peaking at 35°C (96°F) and an average of 23°C (73°F), the month maintains a warm yet pleasant atmosphere. As nighttime approaches, temperatures dip to a minimum of 11°C (51°F), inviting more comfortable evenings. September also brings a modest precipitation amount of 57 mm (2.2 in) over just 4 days, contributing to a relatively humid environment with an average humidity level of 66%. This blend of warmth and occasional rain makes September an interesting time to explore the vibrant streets and cultural landmarks of Tianjin.
September in Tianjin ushers in the transition from the heat of summer to the crisp notes of autumn. With minimum temperatures around 11°C (51°F) and an average of 23°C (73°F), the city offers a pleasant respite from the sweltering summer months, where highs can soar to 35°C (96°F). This month marks a significant drop from the soaring peaks of July and August, as the lingering warmth begins to recede, making way for more comfortable outdoor activities. As the days grow shorter and cooler, September serves as a vibrant prelude to autumn, inviting both locals and visitors to enjoy the changing seasons without the extremes of summer's heat.
In September, Tianjin experiences a notable decrease in precipitation, receiving 57 mm (2.2 in) of rainfall over 4 days. This drop follows the peak monsoon months of July and August, which collectively showcase a significant surge with 182 mm (7.2 in) and 156 mm (6.1 in), respectively. The transition into fall brings a marked reduction in both the intensity and frequency of rainfall, as the city shifts from its wettest season to a more moderate climate. The relatively low precipitation in September, characterized by a few light showers, sets the tone for the drier months ahead, paving the way for the gradual emergence of clear skies and cooler temperatures.
As September rolls into Tianjin, the city's humidity reflects a gradual decline following the summer months. After peaking at a sultry 78% in both July and August, September experiences a decrease to a still noticeable 66%. This transition signals the onset of autumn, where humidity levels contemplate a balance against the backdrop of cooler temperatures. The earlier months of the year, starting with 40% in January and creeping up to 61% by April, show a steady increase, but the summer brings a noticeable spike that characterizes the season’s intensity. With October bringing humidity back up to 70%, September serves as a pivotal month, marking the shift from the humid heat of summer towards the more temperate fall climate.
In September, Tianjin experiences a UV Index of 7, placing it in the high exposure category and resulting in a burn time of approximately 25 minutes. This marks a slight decline from the peak levels seen in the summer months, where July reached an extreme UV Index of 11. Following the scorching heat of June and July, September offers a moderate respite while still requiring sun protection, particularly during midday. The transition towards autumn continues into October, where the UV Index remains at 6, maintaining a high exposure classification. For ongoing UV updates and insights into safe sun exposure habits, visit Tianjin UV Index.
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September in Tianjin, China, offers a delightful blend of sunlight with 285 hours illuminating the month. This marks a gentle transition from the summer’s peak, where June and May basked in a vibrant 318 and 329 hours respectively. As the days grow shorter, September still retains a generous amount of sunshine, though it shows a noticeable decline compared to the sun-drenched summer months. The trend reflects the cooling of the season, paving the way for the crisp autumn days ahead. With October dropping further to 257 hours, September serves as a comforting bridge, gently wrapping the outdoors in a warm glow before the dwindling light of fall sets in.
In Tianjin, China, the likelihood of sunny weather shows a notable trend as the year progresses. Beginning with a robust 78% chance in January, the sun's presence begins to wane through the spring and reaches its lowest in summer, dropping to merely 32% in July. As September arrives, the chances of sunny days modestly improve to 44%, though still below the annual average. This transitional month hints at the easing of summer's grip, leading into the more stable, sunnier months of autumn, which offer a 54% chance in October and a promising 70% in November. The ebb and flow of Tianjin's skies reflect a dynamic climate, where sunshine is more of a cherished sense of hope as summer fades.
As September rolls in, Tianjin, China experiences a gradual shift in daylight, with 12 hours of sunlight—marking a gentle decline from the peak of 14 hours in the vibrant summer months. This transition reflects a broader trend seen throughout the year, where daylight starts at a modest 9 hours in January, steadily increasing to the longest days in late spring and summer, before tapering back down in fall and winter. As nature prepares for a cozy autumn, September's daylight captures a harmonious blend of lingering warmth and the approaching chill, inviting residents and visitors alike to relish those golden hours before the days start shortening more sharply in October.
In September, the wind in Tianjin begins to shift as summer wanes, with an average speed of 2.7 m/s (6 mph). This slight increase from the summer's lows, specifically August's 2.1 m/s (5 mph), marks a transition towards a breezier autumn. Throughout the year, wind speeds generally climb from the calm of winter months, peaking in late spring with 4.1 m/s (9 mph) in May, before gradually tapering off in late summer. As the seasons change, September’s gentle winds offer a refreshing reprieve, hinting at the crispness of fall just around the corner. This pattern of fluctuation illustrates the dynamic climate of Tianjin, where every month brings its own unique breezes.
Weather in Tianjin varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Tianjin, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase stark contrasts in weather conditions. In September, temperatures range from a mild 11°C (51°F) at night to a sweltering 35°C (96°F) during the day, with an average of 23°C (73°F). The month also experiences a moderate amount of precipitation, totaling 57 mm (2.2 in) over four days, accompanied by a humidity level of 66%. In sharp contrast, January brings frigid temperatures, with lows plummeting to -19°C (-1°F) and an average of -2°C (28°F), reaching a maximum of only 11°C (53°F). This winter month is extremely dry, with virtually no precipitation recorded and a lower humidity of 40%. To explore more about January weather, you can refer to Tianjin weather in January.
September and February present contrasting weather patterns. September tends to be warm, with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 35°C (96°F) and an average of 23°C (73°F). The month experiences moderate precipitation, averaging 57 mm (2.2 in) over about 4 days, and a humidity level of 66%, creating a humid atmosphere. In stark contrast, February is much colder, with temperatures ranging from a minimum of -13°C (9°F) to a maximum of 23°C (74°F) and an average of 0°C (33°F). Precipitation is minimal, totaling just 8 mm (0.3 in) over a single day, accompanied by a lower humidity of 41%. For a more detailed look at February's weather, you can visit Tianjin weather in February.
In September, the weather transitions from warm to hot, with average temperatures around 23°C (73°F) and maximums reaching as high as 35°C (96°F). The humidity is relatively high at 66%, and the month sees about 57 mm (2.2 in) of precipitation over approximately 4 days. In contrast, March presents a starkly different climate, with average temperatures dropping to 9°C (48°F) and minimums plunging to -5°C (24°F). This month has significantly lower precipitation at 15 mm (0.6 in) over just 3 days and a humidity of 48%. The contrasting temperatures and weather patterns highlight the seasonal shift between these two months. For more detailed information, you can visit Tianjin weather in March.
In September, the weather features a broader temperature range, with minimums of 11°C (51°F) and maximums reaching up to 35°C (96°F), resulting in an average temperature of 23°C (73°F). This month also sees slightly higher humidity at 66% and greater precipitation totaling 57 mm (2.2 in) over four days. In contrast, April experiences cooler temperatures, starting from a low of 1°C (33°F) and peaking at 34°C (93°F), with a more moderate average of 16°C (61°F). The spring month also sees less rainfall, accumulating 30 mm (1.2 in) over the same four days, and lower humidity levels at 61%. For a detailed look at the weather patterns, you can check Tianjin weather in April.
September and May present contrasting weather patterns, with September featuring temperatures ranging from a minimum of 11°C (51°F) to a maximum of 35°C (96°F) and a higher average of 23°C (73°F). This month typically experiences more precipitation, averaging 57 mm (2.2 in) over about four days, along with a humidity level of 66%. In contrast, May offers slightly cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 37°C (100°F), while the average is close at 22°C (72°F). Precipitation during May is significantly lower, totaling 25 mm (1.0 in) over three days and accompanied by lower humidity at 58%. For more detailed information, visit Tianjin weather in May.
In comparing the weather of September and June, we observe a subtle contrast in temperatures and precipitation patterns. September generally experiences a broader temperature range, with a minimum of 11°C (51°F) and a maximum of 35°C (96°F), averaging around 23°C (73°F). In contrast, June boasts a slightly higher average temperature of 26°C (79°F), with a maximum reaching up to 39°C (103°F) and a minimum of 12°C (53°F). Both months show similarly low precipitation levels, with June receiving 52 mm (2.1 in) over 7 days and September recording 57 mm (2.2 in) over 4 days. Humidity remains comparable, with September at 66% and June slightly lower at 64%. For more detailed insights, check Tianjin weather in June.
When comparing the weather of September and July, it becomes clear that July is significantly warmer and more humid. In July, temperatures range from a minimum of 19°C (66°F) to a scorching maximum of 39°C (103°F), creating an average of 28°C (83°F). This month also experiences substantial rainfall, with 182 mm (7.2 in) of precipitation across 14 days, leading to a high humidity level of 78%. In contrast, September offers a more moderate climate, with temperatures falling between 11°C (51°F) and 35°C (96°F), averaging 23°C (73°F). Additionally, September sees less precipitation at 57 mm (2.2 in) over just 4 days, and a lower humidity of 66%. For more details on July's weather, visit Tianjin weather in July.
In comparing the weather of September to that of August, September generally sees cooler temperatures, with a minimum of 11°C (51°F), an average of 23°C (73°F), and a maximum of 35°C (96°F). This is a notable drop from August, which has a higher minimum of 17°C (63°F), an average of 27°C (80°F), and peaks at 37°C (99°F). Additionally, September experiences less precipitation, with 57 mm (2.2 in) over 4 days, whereas August sees significantly more rain at 156 mm (6.1 in) spread over 13 days. The humidity also decreases slightly in September to 66% from August's 78%. For a more detailed look at the weather patterns in August, visit Tianjin weather in August.
In September, the weather is characterized by warmer temperatures, with a minimum of 11°C (51°F) and an average of 23°C (73°F), peaking at a hot 35°C (96°F). The month experiences about 57 mm (2.2 in) of precipitation over four days, with humidity levels around 66%. In contrast, October heralds a significant drop in temperatures, starting as low as 1°C (35°F) and averaging 14°C (58°F), with a maximum of 32°C (90°F). Although it is slightly drier with 40 mm (1.6 in) of rainfall over the same number of days, the humidity rises to 70%. For a detailed overview of the weather in October, visit Tianjin weather in October.
September typically boasts much warmer weather, with average temperatures ranging from a mild 11°C (51°F) at night to a high of 35°C (96°F) during the day. In contrast, November experiences much cooler temperatures, with an average low of -6°C (22°F) and a daytime high of 26°C (79°F). Additionally, September tends to be wetter, receiving about 57 mm (2.2 in) of precipitation over four days, compared to November's lighter 21 mm (0.8 in) over just three days. Interestingly, November's humidity levels are slightly higher at 68%, compared to September's 66%. For more detailed information, you can check Tianjin weather in November.
September and December present stark contrasts in weather. In September, temperatures range from a cool 11°C (51°F) at night to a scorching 35°C (96°F) during the day, with an average of 23°C (73°F). This month experiences a moderate amount of rainfall, totaling 57 mm (2.2 in) over four rainy days, and a humid atmosphere with 66% humidity. In contrast, December brings much colder temperatures, with a minimum of -14°C (7°F) and an average of -1°C (30°F). The maximum temperature reaches only 13°C (56°F), and precipitation is minimal, with just 2 mm (0.1 in) over the entire month and no rainy days. Humidity also decreases to 51%. For more details on the weather specifics, check out Tianjin weather in December.
As summer transitions into fall, September in Tianjin brings a welcome change, marked by moderate temperatures and lower humidity levels compared to the sweltering heat of July and August. With an average temperature of 23°C (73°F), the weather is pleasantly warm, providing an ideal backdrop for outdoor activities. Unlike the peak summer months, September experiences less rainfall, with only a few days of precipitation, making it a great time to explore the city's vibrant atmosphere. As you enjoy the mild weather, you can learn more about the seasonal changes by visiting Tianjin Climate.