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September Weather in Sun City, United States

Last updated: June 24, 2025

In September, the average temperature in Sun City, United States hovers around 32°C (89°F), with fluctuations that can see it drop to a cool 14°C (57°F) or soar as high as a sweltering 45°C (114°F). Expect some precipitation, averaging 25 mm (1.0 in) over just 3 days, contributing to an average humidity of 64%. Embrace the warmth, but be prepared for the occasional rain!

September Temperature in Sun City

In September in Sun City, the average temperature is 32°C (89°F). Maximums can reach 45°C (114°F), while minimums can drop to as low as 14°C (57°F). Be prepared for a wide range of temperatures and stay hydrated while exploring.

September Weather in Sun City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sun City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sun City, September typically has an average temperature of 32°C (89°F), with highs reaching up to 45°C (114°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec545765758292959589766555
Data source: Temperature data for Sun City 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 Sun City

In Sun City in September, the precipitation amount is 25 mm (1.0 in) over the course of 3 days.

September Precipitation Trends in Sun City

The chart displays monthly precipitation patterns in Sun City, 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 Sun City, September typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec223229122343425231720
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sun City

In Sun City in September, humidity is 64%. With an average temperature of 32°C (89°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel more strenuous and prompting travelers to seek shade or refreshment more frequently.

September Average Humidity in Sun City

This chart illustrates the average monthly humidity levels in Sun City, 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 Sun City is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sun City

In Sun City in September, 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 Sun City.

Maximum UV Index Levels in Sun City for September

The chart shows the monthly maximum UV Index (UVI) for Sun City 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 Sun City typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469101112111110754
Data source: Sun City 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 Sun City Compares to Other Months

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

This table compares monthly weather conditions in Sun City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (55°F)22 mm (0.9 inches)76%moderate
February Weather14°C (57°F)32 mm (1.2 inches)79%high
March Weather18°C (65°F)29 mm (1.2 inches)67%very high
April Weather24°C (75°F)1 mm (0.0 inches)55%very high
May Weather28°C (82°F)2 mm (0.1 inches)40%extreme
June Weather33°C (92°F)2 mm (0.1 inches)33%extreme
July Weather35°C (96°F)34 mm (1.3 inches)34%extreme
August Weather35°C (95°F)34 mm (1.3 inches)48%extreme
September Weather32°C (89°F)25 mm (1.0 inches)64%very high
October Weather24°C (76°F)23 mm (0.9 inches)67%high
November Weather19°C (66°F)17 mm (0.7 inches)77%moderate
December Weather13°C (55°F)20 mm (0.8 inches)82%moderate

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