Last updated: August 21, 2025
In Haidian, China, September brings a dynamic weather pattern, characterized by a maximum temperature reaching 36°C (98°F) and an average of 21°C (71°F), creating a warm yet comfortable climate. The evenings can cool off, with temperatures dropping to a minimum of 6°C (43°F). This month sees approximately 71 mm (2.8 in) of rainfall spread across 6 days, contributing to a relative humidity of 66% that adds to the lushness of the region. Overall, September in Haidian offers a blend of warm days and refreshing rains, setting the stage for a picturesque autumn transition.
In Haidian, China, September marks a delightful transition into mild autumn weather as temperatures begin to cool down. With a minimum of 6°C (43°F) and an average of 21°C (71°F), the month presents comfortable days that are perfect for outdoor activities. Daytime highs can still reach a warm 36°C (98°F), reminiscent of summer but gradually giving way to the crispness of fall. This shift in climate is a refreshing change after the heat of summer, setting the stage for the colorful foliage and cooler temperatures of October. Overall, September serves as a gentle reminder that as summer bids farewell, the beauty of autumn is just around the corner.
September in Haidian, China, marks a notable transition in precipitation patterns as the summer rains begin to wane. With 71 mm (2.8 in) of rain falling over 6 days, this month serves as a bridge between the heavy downpours of July and August and the significantly drier conditions of October and beyond. The rainfall is a substantial reduction from July's peak of 196 mm (7.7 in) and August's 135 mm (5.3 in), yet it remains a significant moisture contributor for the region. This shift indicates the onset of the autumn season, where the frequency and intensity of precipitation start to decline, paving the way for cooler and less humid weather in the months ahead.
September in Haidian, China, marks a transition as the summer's heavy humidity begins to wane. While the peak months of July and August experience a high humidity level of 78%, September sees a significant drop to 66%. This decreased moisture in the air signifies a shift toward the more temperate conditions of autumn, although the humidity levels remain relatively high compared to earlier months like January and February, which hover around 40% and 41% respectively. As the year progresses into October, humidity is expected to rise slightly again to 70%, hinting at the lingering warmth before the cooler months set in. Overall, September serves as a bridge, blending the summer's sultriness with the crispness of fall, creating a unique climate signature for Haidian.
As September rolls into Haidian, China, the UV Index hovers at 7, placing it in the high exposure category. This marks a slight decline from the peak summer months, where the index soared to 10 in July, but it still prompts caution with a recommended burn time of just 25 minutes. Historically, the UV Index trends in Haidian showcase a significant swing from the lower values of winter, such as 2 in January, to the intense peaks seen mid-year. As autumn approaches, residents can expect a gradual decrease in UV levels, though September still demands a mindful approach to sun exposure. For more insights and tips, visit Haidian UV Index.
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In September, Haidian, China, basks in a delightful 279 hours of sunshine, a fitting transition as summer yields to autumn. This month sees a slight dip from the sun-drenched days of August, which boasted 302 hours of radiant light. Overall, the trend reveals a gradual decline in sunshine hours as the year progresses, peaking in May with an impressive 326 hours. As the days shorten, September still offers a generous amount of sunlight, bridging the warmth of summer and the cooler embrace of fall, inviting residents and visitors alike to relish in the beautiful, golden hues of early autumn.
In Haidian, China, the likelihood of sunny weather experiences significant variation throughout the year. September marks a shift, with a 41% chance of sun, a notable decrease from the sunnier months of June and July but still more favorable than the summer peak. Following a hot season, this month sees a gradual transition into autumn, where sunny days become less frequent. Interestingly, October shows an uptick in sunshine probability, climbing back to 58%, indicating that while September may not be the sunniest, it serves as a bridge to brighter days ahead. Overall, as the year progresses, Haidian's weather patterns reveal a dance between sunny and cloudy days, with each month offering its unique charm.
As summer wanes into autumn, September in Haidian, China, marks a subtle transition in daylight hours, offering about 12 hours of sunshine each day. This month, while shorter than the sun-drenched summer months of June, July, and August—each boasting 14 hours of light—still provides ample time for outdoor activities and enjoying the lingering warmth. As the year progresses, daylight gradually tapers, with the promise of long evenings returning, reminiscent of the shorter days of January and November, which each offer just 9 hours of sunlight. This seasonal ebb and flow not only highlights nature's rhythms but also invites residents to savor the fleeting warmth of early fall before it gives way to winter's embrace.
As September rolls in, the winds in Haidian, China, begin to calm, reflecting a gradual decline in average wind speed. Starting the year with gentle breezes in January at 2.2 m/s, Haidian experiences its peak winds in late spring, reaching 2.8 m/s in May before tapering off into the summer months. July and August see the calmest conditions, with wind speeds dropping to a mere 1.6 m/s. As we transition into September, this trend continues, as the winds quieten further to 1.5 m/s, signaling a serene shift towards autumn. This pattern hints at the region's seasonal changes, where tranquil winds slowly pave the way for the brisker gusts of October and November.
Weather in Haidian varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Haidian, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is typically warm and variable, with temperatures ranging from a cool 6°C (43°F) to a scorching 36°C (98°F), and an average of around 21°C (71°F). There is some precipitation, with an average of 71 mm (2.8 in) over about 6 days, and humidity levels are relatively high at 66%. In stark contrast, January brings significantly colder temperatures, with lows dipping to -20°C (-4°F) and highs reaching only up to 12°C (53°F). The average temperature in January is a brisk -4°C (25°F), and precipitation is minimal at just 2 mm (0.1 in), occurring over 0 days, with humidity levels considerably lower at 40%. For more details, check out Haidian weather in January.
September and February present strikingly different weather conditions. In September, temperatures range from a mild 6°C (43°F) at their lowest to a scorching high of 36°C (98°F), with an average of 21°C (71°F) and humidity at 66%. This month also experiences 71 mm of precipitation over about six days. Conversely, February is characterized by much colder temperatures, with a minimum of -13°C (8°F) and an average of -1°C (31°F), peaking at 23°C (74°F). This month boasts significantly lower precipitation, only 9 mm over two days, and a humidity level of 41%. For more detailed information about the weather in February, you can check Haidian weather in February.
September weather is characterized by warmer temperatures, with a minimum of 6°C (43°F) and an average of 21°C (71°F), peaking at a high of 36°C (98°F). This month experiences more precipitation, totaling 71 mm (2.8 in) over about 6 days, and a relatively high humidity level of 66%. In contrast, March is much colder, featuring temperatures that range from a minimum of -6°C (21°F) to an average of 7°C (45°F), and a maximum of 26°C (79°F). Additionally, March sees significantly less rainfall, with only 17 mm (0.7 in) across about 3 days and lower humidity at 48%. For more details, check out Haidian weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a chilly 6°C (43°F) at night to a warm 36°C (98°F) during the day, with an average temperature of 21°C (71°F). The month sees 71 mm (2.8 in) of precipitation over about 6 days, and humidity levels are relatively high at 66%. In contrast, April experiences cooler nights with temperatures dropping to -3°C (26°F) and warmer afternoons peaking at 35°C (95°F), averaging 15°C (59°F). Precipitation in April is significantly lower at 20 mm (0.8 in) over just 2 days, accompanied by slightly lower humidity at 61%. For more detailed insights, you can check Haidian weather in April.
September and May both feature average temperatures around 21°C (71°F), but the extremes tell a different story. In September, temperatures can reach as high as 36°C (98°F), while May sees a maximum of 39°C (102°F). May also has slightly cooler temperatures, with a minimum of 3°C (39°F) compared to September's 6°C (43°F). Additionally, May experiences less precipitation, with only 20 mm (0.8 in) over 4 days, compared to September's 71 mm (2.8 in) over 6 days, and lower humidity levels at 58% versus September's 66%. For more detailed information, you can check Haidian weather in May.
In comparing the weather between September and June, we can see distinct differences in temperature and precipitation patterns. September experiences lower minimum temperatures, ranging from 6°C (43°F) at night, while June starts at a milder 11°C (52°F) in the early hours. The average temperature in June is notably higher at 26°C (79°F), compared to September's 21°C (71°F), illustrating the peak summer warmth in June with maximum temperatures soaring up to 41°C (106°F) versus September's maximum of 36°C (98°F). In terms of precipitation, September is slightly wetter with 71 mm (2.8 in) over 6 days, compared to June’s 50 mm (2.0 in) on the same number of days. Both months experience high humidity levels—66% in September and 64% in June—adding to the muggy feel of late summer. For more detailed information, you can check out Haidian weather in June.
September weather tends to be milder compared to July, with minimum temperatures dipping to 6°C (43°F) and average highs reaching 21°C (71°F). In contrast, July experiences warmer conditions, averaging 27°C (81°F) and peaking at a maximum of 39°C (103°F). Additionally, September is generally drier, with only 71 mm (2.8 in) of precipitation over 6 days, while July sees a significantly higher rainfall of 196 mm (7.7 in) across 14 days. Humidity levels also differ, with September's 66% being lower than July's 78%, contributing to a more comfortable feel during the early autumn month. For more details on July's climate, visit Haidian weather in July.
In comparing the weather of September and August, we notice a significant drop in temperatures as September's minimum temperature begins at 6°C (43°F) compared to August's milder minimum of 15°C (59°F). The average temperature for September is 21°C (71°F), which is noticeably cooler than August's average of 26°C (78°F). Furthermore, while August experiences higher maximum temperatures of up to 38°C (101°F), September peaks at 36°C (98°F). Precipitation also varies, with September receiving 71 mm (2.8 in) over 6 days, in contrast to August's 135 mm (5.3 in) over 12 days, indicating a drier month. Humidity is also higher in August at 78%, compared to September's 66%. For further details on August's weather, you can refer to Haidian weather in August.
September weather features a wider temperature range, with minimums at 6°C and maximums reaching up to 36°C, reflecting the warmth of late summer. The average temperature of 21°C and 71 mm of precipitation over 6 days suggest a mix of sunny and rainy days, with humidity at 66%. In contrast, October experiences a significant drop in minimum temperatures, reaching -2°C, and an average of 12°C, while maximums still peak at a warm 31°C. With only 33 mm of precipitation over 4 days and a slight increase in humidity to 70%, October brings a more gradual transition into autumn. For more on October weather specifics, check Haidian weather in October.
September and November showcase a significant contrast in weather patterns. In September, temperatures can soar with a minimum of 6°C (43°F) and a peak of 36°C (98°F), offering an average of 21°C (71°F), accompanied by relatively high humidity at 66% and moderate rainfall of 71 mm over 6 days. In contrast, November ushers in cooler temperatures, with averages dipping to around 5°C (40°F), and nighttime lows plummeting to -9°C (16°F). Rainfall in November is markedly less, at just 14 mm over 2 days, and humidity remains similar at 68%. For more detailed insights, check out Haidian weather in November.
September and December showcase starkly contrasting weather patterns. In September, temperatures can range from a chilly 6°C (43°F) at night to a sweltering 36°C (98°F) during the day, with an average of 21°C (71°F). This month sees a fair amount of rainfall, totaling 71 mm (2.8 in) over approximately six days, and humidity levels sit at around 66%. In contrast, December brings a full winter chill, with temperatures that dip as low as -14°C (6°F) and peak at only 13°C (55°F), averaging -2°C (28°F). Precipitation is minimal, with only 3 mm (0.1 in) expected across the month, and the humidity decreases to 51%. For more details, check out Haidian weather in December.
As September unfolds in Haidian, the weather transitions into a delightful blend of warmth and mildness, distinguishing it from the sweltering summer months. This month sees average temperatures hovering around 21°C, creating a comfortable atmosphere perfect for outdoor activities. While maximum temperatures can still reach a high of 36°C, nights begin to cool down, offering a welcome respite from the heat. September also experiences a modest amount of precipitation spread across just a few days, allowing for lush greenery without the incessant rain typical of other seasons. The humidity level at 66% can occasionally make the warmth feel stickier, yet overall, the weather remains inviting. For a more in-depth look at the seasonal shifts in this vibrant district, visit Haidian Climate.