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April Weather in Si'en, China

Last updated: August 22, 2025

In April, the average temperature in Si'en, China hovers around 20°C (69°F), with minimums dropping to 9°C (48°F) and maximums soaring to 33°C (92°F). Expect 191 mm (7.5 in) of precipitation over approximately 22 days, and enjoy an average humidity level of 67%. Don't forget your umbrella!

April Temperature in Si'en

In April in Si'en, the average temperature is 20°C (69°F). Maximum temperatures can reach 33°C (92°F), while the minimum can drop as low as 9°C (48°F). This pleasant climate makes it an ideal time for traveling, offering a comfortable range for outdoor activities and exploration.

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

The chart illustrates April 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, April typically has an average temperature of 20°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec525463697680828280706354
Data source: Temperature data for Si'en 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.

April Precipitation in Si'en

In Si'en in April, the precipitation amount totals 191 mm (7.5 in) over a span of 22 days.

April Precipitation Trends in Si'en

The chart displays monthly precipitation patterns in Si'en, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Si'en, April typically receives around 191 mm (7.5 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec80941841912924292582611701319056
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Si'en

In Si'en in April, humidity is 67%. With an average temperature of 20°C (69°F), this humidity feels like a warm, gentle embrace that clings to your skin, creating a comfortable yet slightly sticky atmosphere that can be refreshing while exploring the sights, provided you stay hydrated and take breaks in the shade.

April Average Humidity in Si'en

This chart illustrates the average monthly humidity levels in Si'en, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Si'en is approximately 67%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Si'en

In Si'en in April, 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 Si'en.

Maximum UV Index Levels in Si'en for April

The chart shows the monthly maximum UV Index (UVI) for Si'en in April, 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 April, the maximum UV index in Si'en typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111113121313111086
Data source: Si'en April 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 April 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 April’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 April’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

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