Last updated: August 21, 2025
September in Nanhai, China presents a warm and slightly humid atmosphere, with average temperatures hovering around 27°C (81°F). Daily highs can reach up to a comfortable 29°C (85°F), while evenings cool down to about 23°C (73°F). Travelers should prepare for a fair amount of rain, as the month sees an average total of 96 mm (3.8 in), spread over 12 days. With humidity levels around 70%, the weather can feel quite sticky, making it essential to stay hydrated and enjoy the vibrant tropical landscapes that thrive during this season.
As September rolls into Nanhai, China, the temperatures reflect a subtle transition toward autumn while retaining the warmth of summer. With minimums around 23°C (73°F) and averages peaking at 27°C (81°F), the month continues to showcase the lingering summer warmth, though the highs gently taper off to 29°C (85°F). This signs a notable shift from the sweltering heat of July and August, which consistently flirted with the higher end of the scale. As daylight hours shorten and humidity begins to ease, September is a delightful blend of warmth and comfort, making it an ideal time for outdoor activities as the area prepares for the cooler months ahead.
In September, Nanhai experiences a notable shift in precipitation, recording 96 mm (3.8 in) over 12 days, which marks a decrease from the previous month's heavy rainfall of 201 mm (7.9 in). This marked variability highlights a transition from the peak of the wet season in August to a more manageable weather pattern as autumn approaches. Despite September's reduced intensity, the rain remains significant, contributing to the region's lush landscapes and supporting agriculture. Comparatively, the 12 rainfall days, consistent with the average throughout the year, indicate that while showers become less frequent, the lingering humidity continues to play a crucial role in Nanhai's climate dynamics. As temperatures gradually cool, this shift sets the stage for a more balanced weather pattern moving into the fall.
September in Nanhai, China, marks a notable transition in humidity levels, dropping to 70% as summer fades into autumn. This decrease is part of a broader trend observed throughout the year, where humidity peaks in the late spring and summer months, reaching heights of 85% in May. As the seasons shift, September's lower humidity provides a refreshing contrast to the elevated levels experienced in the sweltering summer. Despite this dip, subsequent months see a gradual rise back to 73% in October, highlighting the region's propensity for fluctuating moisture levels that contribute to its lush environment and vibrant climate.
In September, Nanhai, China experiences a notable UV Index of 11, categorizing it as extreme and requiring caution for sun exposure. This trend follows a summer peak that saw the UV Index soar to 13 in both July and August, emphasizing the region's intense sunlight during these months. Interestingly, the UV Index begins to decline in October, dropping to a very high 9, providing a slight reprieve from the extreme conditions of the summer. With consistently low burn times of just 10 minutes during September, it's crucial for residents and visitors alike to take protective measures while enjoying the waning warmth. For more detailed information, visit Nanhai UV Index.
UV Risk Categories
September in Nanhai, China, basks in a delightful 294 hours of sunshine, making it one of the sunniest months of the year. Following the peak summer months, July and August, which showcased stunning highs of 331 and 312 hours, September maintains a significant amount of bright days, allowing residents and visitors to enjoy the tail end of warm weather. As the season transitions into autumn, the sun's presence starts to wane, with October dipping to 265 hours, yet September stands out as a vibrant bridge between the rich warmth of summer and the cooler, crisp days ahead. This sunny month offers an ideal opportunity for outdoor activities, as daylight begins to subtly retreat in the upcoming months.
In September, Nanhai, China, experiences a promising 60% chance of sunny weather, marking a noticeable increase compared to the preceding summer months. This surge in sunshine is a welcome shift from the rainy days of June and July, where the chances of sun plummeted to just 6% and 30%, respectively. As the seasons transition, September stands out as a bright spot, making it an ideal time for outdoor activities and exploration. Following this sunny month, the likelihood of clear skies dips again in October to 35%, suggesting that September is truly a golden opportunity for sun seekers in Nanhai.
As September unfolds in Nanhai, China, daylight lingers for approximately 12 hours, a pleasant continuation of the longer days seen in the summer months. The trend showcases a gradual transition from the extended daylight of 13 hours in the height of summer, highlighting the region's shift towards shorter days as autumn approaches. Following September, daylight begins to taper off, dipping to 11 hours in October and settling back to 10 hours by winter. This rhythmic change in daylight serves as a reminder of nature’s cyclical patterns, inviting both reflection and appreciation for the ever-evolving seasons.
As summer bids farewell in Nanhai, China, September brings a gentle shift in wind dynamics, with an average speed of 6.1 m/s (14 mph), marking a noticeable decline from the gustier months of July and August. This transition into autumn is characterized by a soothing breeze that gently rustles the leaves, inviting residents and visitors alike to enjoy the mild climate. Interestingly, the wind speeds begin to pick up again in October, soaring to 11.3 m/s (25 mph), suggesting that the calm of September is simply a brief interlude before the invigorating winds of fall. Overall, September serves as a tranquil bridge between the warmth of summer and the briskness of autumn, offering a perfect backdrop for outdoor activities and reflection.
Weather in Nanhai varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nanhai, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit stark contrasts in weather. In September, temperatures range from a minimum of 23°C (73°F) to a maximum of 29°C (85°F), with an average of 27°C (81°F), creating a warm and humid atmosphere with 96 mm (3.8 in) of precipitation over 12 days. In contrast, January brings a significant drop in temperatures, with a minimum of 6°C (44°F) and a maximum of 18°C (65°F), averaging only 13°C (56°F). The month is much drier, receiving just 44 mm (1.7 in) of precipitation over 6 days. Despite the lower temperatures, humidity remains relatively consistent at 73%. To explore more about January weather, you can see Nanhai weather in January.
September and February present stark contrasts in weather patterns. In September, temperatures are much warmer, with averages around 27°C (81°F), peaking at a maximum of 29°C (85°F). The month also sees significant precipitation, totaling 96 mm (3.8 in) over about 12 days, with humidity levels hovering around 70%. In contrast, February carries a chillier demeanor, with average temperatures dipping to 13°C (55°F) and highs only reaching 17°C (64°F). It experiences less rainfall, with 62 mm (2.4 in) over 8 days, while humidity remains slightly higher at 73%. For a more detailed look at the weather in February, you can check this link: Nanhai weather in February.
When comparing the weather in September and March, notable differences in temperature and humidity are evident. September enjoys warmer temperatures, with a minimum of 23°C (73°F) and an average of 27°C (81°F), while March is much cooler, starting at a minimum of 10°C (50°F) and averaging only 15°C (59°F). Both months experience similar levels of precipitation, with September receiving 96 mm (3.8 in) and March slightly wetter with 108 mm (4.3 in), although the number of rainy days remains the same at 12. Additionally, humidity levels are higher in March at 80%, compared to September's 70%, creating a distinct contrast in the overall climate between the two months. For more detailed weather insights, you can check Nanhai weather in March.
September and April present contrasting weather patterns. In September, temperatures are notably warmer, with a minimum of 23°C (73°F) and an average high of 29°C (85°F), making it a much warmer month overall. Additionally, September experiences higher humidity at 70% and slightly more precipitation, totaling 96 mm (3.8 inches) across 12 days. In contrast, April boasts cooler temperatures, with a minimum of 12°C (54°F) and an average high of 24°C (75°F), accompanied by 81 mm (3.2 inches) of precipitation over 11 days. The humidity in April is slightly higher at 81%, contributing to a different feel in the atmosphere. For more detailed information on April conditions, you can visit Nanhai weather in April.
Comparing the weather in September and May reveals distinct seasonal differences. In September, temperatures are generally warmer, with a minimum of 23°C (73°F) and an average of 27°C (81°F), while May is cooler, starting at a minimum of 17°C (64°F) and peaking at an average of 22°C (73°F). Additionally, September experiences less precipitation, totaling 96 mm (3.8 in) over 12 days, compared to May's higher 135 mm (5.3 in) across the same number of days. Humidity levels also differ noticeably, with September at 70% and May reaching a higher 85%. For further details about May weather, you can visit Nanhai weather in May.
In comparing September and June weather, both months feature similar maximum temperatures, peaking at around 29°C (85°F), but September generally feels a bit warmer on average, with temperatures averaging 27°C (81°F) compared to June's 26°C (79°F). Precipitation, however, tells a different story; September receives significantly less rainfall at 96 mm (3.8 in) over 12 days, while June experiences a much wetter climate, with 267 mm (10.5 in) of rain across 13 days. Additionally, humidity levels are higher in June at 81%, compared to September's 70%, which can make June feel more muggy overall. For a more detailed look at June weather patterns, you can visit Nanhai weather in June.
In comparing the weather of September and July, September tends to be slightly cooler, with minimum temperatures averaging around 23°C (73°F), while July starts off warmer with a minimum of 26°C (79°F). Both months share a maximum temperature of 29°C (85°F), but September experiences a bit more rain, averaging 96 mm (3.8 in) over approximately 12 days, compared to July's 52 mm (2.1 in) over just 7 days. Additionally, September's humidity levels are lower at 70%, in contrast to July's higher humidity of 84%. For more detailed information, you can check Nanhai weather in July.
When comparing the weather of September and August, September tends to be slightly cooler, with average temperatures ranging from a minimum of 23°C (73°F) to a maximum of 29°C (85°F), compared to August, which sees a minimum of 26°C (78°F) and a maximum of 30°C (87°F). Additionally, September experiences less precipitation, with 96 mm (3.8 in) over 12 days, whereas August has a significantly higher rainfall of 201 mm (7.9 in) spread over 16 days. Humidity levels also drop in September to 70%, compared to August's higher humidity of 82%. For more detailed information, you can visit Nanhai weather in August.
In September, the weather is generally warmer, with average temperatures peaking at 27°C (81°F) and reaching a maximum of 29°C (85°F). The month experiences a higher level of rainfall, totaling 96 mm (3.8 in) over 12 days, and humidity levels are around 70%. In contrast, October brings a slight cool down, with average temperatures dropping to 24°C (75°F) and a minimum temperature of 18°C (65°F). Precipitation decreases to 70 mm (2.8 in), while the humidity rises slightly to 73%. For more details, you can check Nanhai weather in October.
September and November showcase a notable shift in weather conditions. In September, temperatures are warmer, with a minimum of 23°C (73°F) and an average high of 29°C (85°F), creating a summery feel despite the 96 mm (3.8 in) of precipitation over 12 days. Humidity during this month is relatively high at 70%. In contrast, November experiences cooler temperatures, with a minimum of 14°C (57°F) and a maximum of 23°C (73°F), offering a more autumnal atmosphere. Precipitation is lower at 61 mm (2.4 in) over 11 days and humidity rises to 77%, making it feel quite damp. For more detailed insights, you can refer to Nanhai weather in November.
In September, the weather is considerably warmer, with average temperatures hovering around 27°C (81°F) and highs reaching up to 29°C (85°F), creating a hot and humid atmosphere with 70% humidity. The month experiences a decent amount of rainfall, measuring 96 mm (3.8 in) over approximately 12 days. In contrast, December sees a significant drop in temperatures, with averages around 15°C (60°F) and maximums peaking at 20°C (69°F). Despite a lower overall precipitation of 53 mm (2.1 in) spread over 9 days, the humidity rises to 79%, making the air feel chilly. For more detailed information, you can visit Nanhai weather in December.
As September unfolds in Nanhai, visitors can expect a transition in the weather, marked by mild temperatures and an increase in humidity compared to the summer months. While maximum temperatures remain pleasant, the frequent bouts of rain—averaging about 12 days of precipitation—bring a refreshing change to the air, making it a unique time for exploration. The overall atmospheric conditions create a lush environment, inviting both locals and tourists to embrace the vibrant scenes of nature. For those looking to plan their visit, detailed insights into the climate can be found at Nanhai Climate.