September Weather in Lantang, China

Last updated: August 21, 2025

September in Lantang, China, offers a striking blend of warm temperatures and seasonal rainfall that defines the month. With maximum temperatures reaching up to 35°C (96°F) and an average of 27°C (81°F), the weather remains inviting for outdoor activities. However, the minimum temperature dips to a comfortable 18°C (65°F), providing a refreshing respite during cooler evenings. This month sees significant rainfall, with 133 mm (5.3 in) of precipitation spread over 18 days, contributing to the lush, verdant landscapes of the region. The humidity level remains notable at 75%, enhancing the tropical feel of the air. Whether you're exploring the vibrant surroundings or enjoying a cozy indoor retreat, September in Lantang offers a unique climate experience.

September Temperature in Lantang

In September, Lantang, China experiences a delightful transition as temperatures begin to shift from the summer's heat. With a minimum temperature of 18°C (65°F), the nights cool down while the days remain pleasantly warm, reaching an average of 27°C (81°F) and peaking at a maximum of 35°C (96°F). This marks a gradual retreat from the sweltering August conditions, inviting both locals and visitors to enjoy outdoor activities before autumn sets in. The subtle drop in temperatures signifies a move towards the more temperate fall, encouraging a vibrant atmosphere as the lush landscapes start to hint at their seasonal transformation. Overall, September in Lantang offers a perfect mix of warmth and comfort, making it an ideal time to explore this picturesque region.

September Weather in Lantang: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lantang, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lantang, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec596067727881838281756859
Data source: Temperature data for Lantang generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Lantang

September in Lantang, China, marks a noteworthy transition in the monsoon season, with precipitation reaching 133 mm (5.3 in) over 18 days. This amount is a slight decrease from the torrential rains of August but remains substantial, highlighting the lingering effects of the summer monsoon. The region experiences an average of 24 rainy days in August, indicating a peak in rainfall, before tapering off into the fall months. As September progresses, the frequency of rainy days starts to diminish, setting the stage for a more moderate climate in October, where precipitation drops significantly to 70 mm (2.8 in). This pattern underscores the dynamic shifts in Lantang's weather, emphasizing its rich and varied precipitation throughout the year.

September Precipitation Trends in Lantang

The chart displays monthly precipitation patterns in Lantang, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Lantang, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec294698106164318130225134702719
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lantang

In September, Lantang, China, experiences a noticeable dip in humidity, with levels averaging 75% — a refreshing change compared to the sweltering heights of 88% seen in both July and August. This month marks a transition as the oppressive summer heat begins to ease, resulting in a more comfortable atmosphere. Notably, September's humidity is lower than the spring peaks, which saw averages of 71% in April and a high of 79% in May. As the year progresses, humidity levels continue to decline toward the cooler autumn months, with October registering 65%, suggesting that while September still retains significant moisture, it heralds a shift toward drier conditions ahead.

September Average Humidity in Lantang

This chart illustrates the average monthly humidity levels in Lantang, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Lantang is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec64%68%73%71%79%77%88%88%75%65%64%69%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lantang

In September, Lantang experiences a UV Index of 12, categorized as extreme, with a burn time of just 10 minutes. This marks a slight decline from the blazing heat of May and June, which both peaked at 14. Throughout the summer months, the region maintains consistently high UV levels, with July and August also reaching an Index of 13. As we transition into autumn, the UV Index begins to decrease, yet September remains a month where sun safety is crucial. Those planning outdoor activities should stay vigilant against sun exposure and keep an eye on UV levels. For more details, check Lantang UV Index.

Maximum UV Index Levels in Lantang for September

The chart shows the monthly maximum UV Index (UVI) for Lantang in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Lantang typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121214131313121097
Data source: Lantang September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Lantang

September in Lantang, China, shines brightly with 280 hours of sunlight, continuing the warm trend set by the summer months. After July's peak of 304 hours, the region maintains a vibrant atmosphere, with August closely following at 280 hours as well. This consistency hints at a seamless transition into autumn, where daylight remains generous before gradually tapering off into October's 270 hours. Notably, the overall trend from spring through fall reflects a steady increase in sunshine hours, peaking mid-summer, which is a delightful backdrop for both residents and visitors enjoying the stunning landscapes of this enchanting locale.

Monthly Sunshine Duration in Lantang: September Highlighted

The September sunshine duration represents the total number of hours Lantang experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec209h233h240h225h270h229h304h280h280h270h252h264h
Data source: Lantang September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Lantang During September

In September, Lantang, China, enjoys a moderate 45% chance of sunny weather, marking a notable rebound from the dismal sunlight of the peak summer months. After experiencing the lowest probabilities in June and August, which offer only 11% and 15% sunny days respectively, September's weather transitions into a more favorable pattern. This increase in sunshine likely heralds a shift towards autumn, providing a refreshing respite before the winter approaches. Notably, September stands out amid the shoulder months of the year, as it offers a better opportunity for sun-seekers compared to both April and May, making it an appealing time for outdoor activities and exploration.

Percentage of Sunny Days in September in Lantang

The chart illustrates the percentage of sunny days in Lantang throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Lantang experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec70%62%40%33%24%11%29%15%45%35%61%55%
Data source: Lantang September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Lantang in September

As September rolls into Lantang, China, daylight begins to soften, offering around 12 hours of sunlight each day. Following a summer filled with vibrant skies and the longest days peaking at 13 hours in June, the transition into autumn sees a gentle decrease in daylight. Notably, May through July shines brightly with extended daylight, signaling the height of summer enjoyment. In contrast, as the year wanes, light gradually diminishes, with October bringing a return to 11 hours. This rhythmic cycle not only marks the change of seasons but also embodies the natural ebb and flow of light that shapes life in this picturesque region.

Average Daylight Hours in Lantang for September

The chart illustrates the variation in daylight duration in Lantang throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 51m11h 21m12h12h 41m13h 15m13h 32m13h 23m12h 54m12h 15m11h 35m11h10h 42m
Data source: Lantang daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Lantang

In September, Lantang, China, experiences a gentle shift in its wind patterns, with an average wind speed of 1.2 m/s (3 mph). This marks a notable decline from the previous months, reflecting a trend of decreasing wind speeds as summer wanes. The breezy days of May, reaching 2.2 m/s (5 mph), give way to the calmest month of the year. As autumn approaches, the wind embraces a softer touch, paving the way for the cooler October winds that will soon pick up to 2.6 m/s (6 mph). This seasonal transition highlights Lantang's unique climatic rhythm, where each month brings its own character, subtly influencing the beauty of the landscape and the experiences of those who call it home.

Average September Wind Speed in Lantang

The chart displays monthly wind speed patterns in Lantang, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.41.82.01.72.21.91.71.41.2 m/s2.62.42.4
Data source: Lantang September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Lantang Compares to Other Months

Weather in Lantang varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Lantang, focusing on differences in temperature, rainfall, humidity, and UV levels.

In September, the weather is considerably warmer, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 35°C (96°F) and an average of 27°C (81°F). The month also experiences significant rainfall, totaling 133 mm (5.3 in) spread over 18 days, alongside high humidity levels of 75%. In contrast, January brings a much cooler climate, with temperatures dipping to a minimum of 0°C (32°F) and reaching a maximum of 28°C (83°F), averaging 15°C (59°F). Precipitation drops substantially to just 29 mm (1.1 in) over only 3 days, and humidity levels decrease to 64%. For a closer look at the weather specifics in January, you can check Lantang weather in January.

September and February present stark contrasts in weather patterns. In September, temperatures range from a comfortable minimum of 18°C (65°F) to a sweltering maximum of 35°C (96°F), with an average of 27°C (81°F). The month is also characterized by high humidity (75%) and substantial rainfall, averaging 133 mm (5.3 in) over about 18 days. In contrast, February offers a much cooler climate, with temperatures oscillating between 1°C (35°F) at night and reaching a maximum of 30°C (87°F) during the day, averaging just 15°C (60°F). It experiences significantly less rainfall, totaling only 46 mm (1.8 in) over 7 rainy days, and lower humidity at 68%. For those interested in exploring more about February weather, consider checking Lantang weather in February.

September and March present notably different weather patterns. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 35°C (96°F), with an average of 27°C (81°F). This month also experiences significantly more precipitation, totaling 133 mm (5.3 in) over 18 days and a higher humidity level at 75%. In contrast, March is much cooler, featuring temperatures that vary from a minimum of 5°C (42°F) to a maximum of 33°C (91°F), with an average of 19°C (67°F). Precipitation in March is lower, amounting to 98 mm (3.9 in) over just 12 days, and humidity remains slightly lower at 73%. For those seeking detailed insights on weather conditions in March, you can visit Lantang weather in March.

In comparing the weather between September and April, notable differences emerge. September tends to be warmer, with average temperatures around 27°C (81°F) and maximums reaching up to 35°C (96°F), while April's average hovers at a cooler 22°C (72°F), with a maximum of 34°C (94°F). Both months experience significant humidity levels, though September's is slightly higher at 75% compared to April's 71%. When it comes to precipitation, September sees more rainfall at 133 mm (5.3 in) over 18 days, whereas April has a total of 105 mm (4.2 in) over just 13 days. For those interested in the specifics of April weather, more information can be found here: Lantang weather in April.

September and May exhibit differing weather patterns, influencing outdoor activities and overall comfort. In September, temperatures range from a mild 18°C (65°F) to a maximum of 35°C (96°F), with an average of 27°C (81°F). The month sees significant precipitation, totaling 133 mm (5.3 in) over 18 days, along with a humidity level of 75%. In comparison, May experiences slightly cooler minimum temperatures starting at 14°C (57°F) but can reach a peak of 38°C (100°F) and maintain an average of 26°C (79°F). Rainfall in May is higher at 164 mm (6.5 in) over the same number of rainy days, coupled with a marginally elevated humidity of 79%. For a closer look at May's specific conditions, check out Lantang weather in May.

In comparing the weather of September and June, both months showcase an average temperature of 27°C (81°F), but they differ notably in their minimum and maximum temperatures. September has a milder temperature range, with a minimum of 18°C (65°F) and a maximum of 35°C (96°F), whereas June is generally warmer, starting at 20°C (68°F) and peaking at 38°C (100°F). Additionally, June experiences significantly higher precipitation, with 318 mm (12.5 in) over 26 days, compared to September's 133 mm (5.3 in) over 18 days. The humidity levels are also slightly elevated in June, at 77% compared to September's 75%. For more details on June weather, you can check Lantang weather in June.

September and July exhibit distinct weather patterns, with September experiencing slightly cooler temperatures. In September, the temperature ranges from a minimum of 18°C (65°F) to a maximum of 35°C (96°F), with an average of 27°C (81°F). In contrast, July has warmer temperatures, with a minimum of 23°C (74°F) and a maximum reaching 36°C (97°F), averaging 28°C (84°F). Both months see significant rainfall, with September recording 133 mm (5.3 in) over 18 days and July just slightly less at 130 mm (5.1 in) over 23 days. Additionally, July tends to be more humid at 88%, compared to September's 75%. For a closer look at July weather, you can check this Lantang weather in July.

In comparing the weather of September to August, we see a slight decline in temperature, with September’s average of 27°C (81°F) being a touch cooler than August's 28°C (83°F). Notably, September features a lower maximum temperature of 35°C (96°F) compared to August’s peak of 36°C (98°F). Precipitation also decreases significantly, with September recording 133 mm (5.3 in) over 18 days, whereas August had much heavier rainfall of 225 mm (8.8 in) over 24 days. Furthermore, humidity levels are higher in August at 88%, compared to September’s more moderate 75%. For more details on August weather, you can check out this link: Lantang weather in August.

In September, the weather is marked by warmer temperatures, with a minimum of 18°C (65°F) and an average of 27°C (81°F), reaching up to a maximum of 35°C (96°F). The month is also quite rainy, with 133 mm (5.3 in) of precipitation over 18 days and a humidity level of 75%. In contrast, October brings a noticeable cooling trend, featuring a minimum temperature of 13°C (56°F) and an average of 24°C (75°F), while peaking at 36°C (97°F). Precipitation drops significantly to 70 mm (2.8 in) over just 7 days, and humidity decreases to 65%. For more specific weather details, check out Lantang weather in October.

September and November weather present a notable contrast in temperature, precipitation, and humidity. In September, temperatures range from a warm 18°C (65°F) at night, averaging around 27°C (81°F) during the day, and peaking at a high of 35°C (96°F). This month is characterized by significant rainfall, with an average precipitation of 133 mm (5.3 in) spread over 18 days and high humidity levels at 75%.

In contrast, November offers a much cooler climate, with minimum temperatures dropping to 10°C (51°F) and an average of 20°C (69°F), while the maximum reaches 31°C (88°F). The precipitation decreases dramatically to just 26 mm (1.0 in) over 4 days, and humidity lowers to 64%. For a more detailed overview of weather conditions during this month, check out Lantang weather in November.

September and December present a striking contrast in weather conditions. In September, temperatures range from a warm minimum of 18°C (65°F) to a peak of 35°C (96°F), with an average of 27°C (81°F). This month also brings considerable rainfall, totaling 133 mm (5.3 in) over 18 days, coupled with high humidity levels of 75%. On the other hand, December sees much cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 29°C (84°F), averaging at 15°C (60°F). Precipitation drops significantly to only 19 mm (0.7 in) across 4 days, and humidity levels decrease slightly to 69%. For more detailed information about weather conditions in December, check out Lantang weather in December.

Compare Lantang's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Lantang

As September rolls into Lantang, the weather begins to shift, presenting a unique blend of warmth and moisture that sets it apart from the preceding months. With average temperatures around 27°C (81°F), it’s a comfortable month, though the maximum highs can reach up to 35°C (96°F). However, the increased humidity at 75% and frequent precipitation over about half the month (with 133 mm of rain) make September feel significantly more tropical than the drier summer months. This transitional period signals the onset of autumn, bringing lush greenery and a vibrant atmosphere to the area, making it a captivating time to experience the beauty of Lantang. For more detailed insights on seasonal weather patterns, visit Lantang Climate.