nomadseason

September Weather in Xihai, China

Last updated: August 22, 2025

In Xihai, China, the average temperature in September hovers around 7°C (44°F). However, temperatures can swing dramatically, with minimums plunging to -5°C (24°F) and maximums reaching up to 20°C (67°F). Expect rainy days, as 93 mm (3.7 in) of precipitation falls over 18 days, while humidity remains high at an average of 82%.

September Temperature in Xihai

In September in Xihai, the average temperature is 7°C (44°F), with maximums potentially reaching 20°C (67°F) and minimums dropping as low as -5°C (24°F). Travelers should prepare for a range of temperatures and pack accordingly to ensure comfort during their visit.

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

The chart illustrates September temperature patterns in Xihai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Xihai, September typically has an average temperature of 7°C (44°F), with highs reaching up to 20°C (67°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec8142533414852514432209
Data source: Temperature data for Xihai 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 Xihai

In Xihai in September, the precipitation amount is 93 mm (3.7 in) spread over 18 days, indicating a relatively wet period.

September Precipitation Trends in Xihai

The chart displays monthly precipitation patterns in Xihai, 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 Xihai, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec671949641051151379347135
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Xihai

In Xihai in September, humidity is 82%. With an average temperature of 7°C (44°F), this humidity feels like an unwelcoming chill that seeps into your bones, making outdoor exploration feel damp and cumbersome.

September Average Humidity in Xihai

This chart illustrates the average monthly humidity levels in Xihai, 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 Xihai is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%80%81%78%71%77%77%82%82%85%80%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Xihai

In Xihai in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Xihai.

Maximum UV Index Levels in Xihai for September

The chart shows the monthly maximum UV Index (UVI) for Xihai 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 Xihai typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469121416141311964
Data source: Xihai 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 Xihai Compares to Other Months

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

This table compares monthly weather conditions in Xihai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-13°C (8°F)6 mm (0.2 inches)74%moderate
February Weather-10°C (14°F)7 mm (0.3 inches)80%high
March Weather-4°C (26°F)19 mm (0.7 inches)81%very high
April Weather1°C (34°F)49 mm (1.9 inches)78%extreme
May Weather5°C (41°F)64 mm (2.5 inches)71%extreme
June Weather9°C (48°F)105 mm (4.1 inches)77%extreme
July Weather11°C (52°F)115 mm (4.5 inches)77%extreme
August Weather10°C (51°F)137 mm (5.4 inches)82%extreme
September Weather7°C (44°F)93 mm (3.7 inches)82%extreme
October Weather0°C (32°F)47 mm (1.8 inches)85%very high
November Weather-7°C (20°F)13 mm (0.5 inches)79%high
December Weather-13°C (9°F)5 mm (0.2 inches)71%moderate

Compare Xihai's Climate with Cities Worldwide