nomadseason

September Weather in Longjiang, China

Last updated: August 22, 2025

In September, the average temperature in Longjiang, China is a warm 28°C (83°F), with a minimum of 23°C (74°F) and a peak at 34°C (93°F). Expect about 140 mm (5.5 in) of precipitation over 18 days, contributing to an average humidity level of 71%. Be prepared for a mix of warmth and moisture as you explore this destination!

September Temperature in Longjiang

In September in Longjiang, the average temperature is 28°C (83°F), with maximums reaching 34°C (93°F) and minimums dropping to as low as 23°C (74°F). This warm climate makes it an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Longjiang, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Longjiang, September typically has an average temperature of 28°C (83°F), with highs reaching up to 34°C (93°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec616167727983848483777164
Data source: Temperature data for Longjiang generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Longjiang

In Longjiang in September, the precipitation amount is 140 mm (5.5 in) over the course of 18 days.

September Precipitation Trends in Longjiang

The chart displays monthly precipitation patterns in Longjiang, 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 Longjiang, September typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec213050591332451672681401024032
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Longjiang

In Longjiang in September, humidity is 71%. With an average temperature of 28°C (83°F), this humidity feels like a warm, enveloping blanket that can make traveling quite uncomfortable if you're not prepared for the stickiness and sweat that accompany such conditions.

September Average Humidity in Longjiang

This chart illustrates the average monthly humidity levels in Longjiang, 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 Longjiang is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%73%79%80%85%81%85%84%72%70%72%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Longjiang

In Longjiang in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Longjiang.

Maximum UV Index Levels in Longjiang for September

The chart shows the monthly maximum UV Index (UVI) for Longjiang 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 Longjiang typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121213131313121097
Data source: Longjiang 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.

How September Weather in Longjiang Compares to Other Months

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

This table compares monthly weather conditions in Longjiang, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)21 mm (0.8 inches)71%high
February Weather16°C (61°F)29 mm (1.2 inches)73%very high
March Weather19°C (67°F)50 mm (2.0 inches)79%extreme
April Weather22°C (72°F)59 mm (2.3 inches)80%extreme
May Weather26°C (79°F)133 mm (5.2 inches)85%extreme
June Weather28°C (83°F)245 mm (9.6 inches)81%extreme
July Weather29°C (85°F)167 mm (6.6 inches)85%extreme
August Weather29°C (84°F)268 mm (10.6 inches)83%extreme
September Weather28°C (83°F)140 mm (5.5 inches)71%extreme
October Weather25°C (78°F)102 mm (4.0 inches)70%very high
November Weather22°C (71°F)40 mm (1.6 inches)72%very high
December Weather18°C (64°F)32 mm (1.3 inches)75%high

Compare Longjiang's Climate with Cities Worldwide