nomadseason

October Weather in Si'en, China

Last updated: August 22, 2025

In Si'en, China, the average temperature in October is a pleasant 21°C (71°F). Temperatures can vary, with a minimum of 12°C (54°F) and a maximum reaching 34°C (94°F). Expect about 131 mm (5.1 in) of precipitation over 13 days, and enjoy the moderate average humidity of 66%.

October Temperature in Si'en

In October in Si'en, the average temperature is 21°C (71°F), with maximums reaching up to 34°C (94°F) and minimums dipping as low as 12°C (54°F). This pleasant climate makes Si'en an ideal destination for outdoor activities and exploration during this time of year.

October Weather in Si'en: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Si'en, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si'en, October typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec525463697680828280706354
Data source: Temperature data for Si'en 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.

October Precipitation in Si'en

In Si'en in October, the total precipitation amount is 131 mm (5.1 in) over the course of 13 days.

October Precipitation Trends in Si'en

The chart displays monthly precipitation patterns in Si'en, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Si'en, October typically receives around 131 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec80941841912924292582611701319056
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Si'en

In Si'en in October, humidity is 66%. With an average temperature of 21°C (71°F), this humidity feels like a warm, sticky embrace that can make outdoor activities a bit taxing but also lends a vibrant energy to the atmosphere, ideal for those who appreciate a tropical ambiance while exploring.

October Average Humidity in Si'en

This chart illustrates the average monthly humidity levels in Si'en, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Si'en is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%67%70%67%84%87%89%86%66%66%69%68%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Si'en

In Si'en in October, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Si'en.

Maximum UV Index Levels in Si'en for October

The chart shows the monthly maximum UV Index (UVI) for Si'en in October, 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 October, the maximum UV index in Si'en typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111113121313111086
Data source: Si'en October 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 October Weather in Si'en Compares to Other Months

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

This table compares monthly weather conditions in Si'en, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)80 mm (3.1 inches)59%high
February Weather12°C (55°F)94 mm (3.7 inches)67%very high
March Weather17°C (63°F)184 mm (7.2 inches)70%extreme
April Weather20°C (69°F)191 mm (7.5 inches)67%extreme
May Weather24°C (76°F)292 mm (11.5 inches)84%extreme
June Weather27°C (80°F)429 mm (16.9 inches)87%extreme
July Weather28°C (83°F)258 mm (10.1 inches)89%extreme
August Weather28°C (83°F)261 mm (10.3 inches)86%extreme
September Weather27°C (80°F)170 mm (6.7 inches)66%extreme
October Weather21°C (71°F)131 mm (5.1 inches)66%very high
November Weather17°C (63°F)89 mm (3.5 inches)69%very high
December Weather12°C (54°F)56 mm (2.2 inches)68%high

Compare Si'en's Climate with Cities Worldwide