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September Weather in Cairo, United States

Last updated: June 24, 2025

In September, the average temperature in Cairo, United States hovers around 20°C (69°F). Be prepared for a range, as temperatures can dip to a chilly 4°C (40°F) or soar to a sweltering 36°C (96°F). During this month, expect around 57 mm (2.3 in) of precipitation spread over 6 days, while the average humidity lingers at a comfortable 77%.

September Temperature in Cairo

In September in Cairo, the average temperature is 20°C (69°F). The maximum can reach 36°C (96°F) and the minimum can be as low as 4°C (40°F). It's advisable to pack both light clothing for the warm days and warmer layers for cooler evenings.

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

The chart illustrates September temperature patterns in Cairo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cairo, September typically has an average temperature of 20°C (69°F), with highs reaching up to 36°C (96°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec262640496175777469514031
Data source: Temperature data for Cairo 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 Cairo

In Cairo in September, the total precipitation amount is 57 mm (2.3 in), occurring over a span of 6 days.

September Precipitation Trends in Cairo

The chart displays monthly precipitation patterns in Cairo, 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 Cairo, September typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2619865614582677657872141
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cairo

In Cairo in September, humidity is 77%. With an average temperature of 20°C (69°F), this humidity feels like a sultry embrace, making travel comfortable yet slightly sticky, as the moist air clings to your skin with every step you take.

September Average Humidity in Cairo

This chart illustrates the average monthly humidity levels in Cairo, 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 Cairo is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%81%69%71%80%83%84%84%77%72%80%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cairo

In Cairo in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Cairo.

Maximum UV Index Levels in Cairo for September

The chart shows the monthly maximum UV Index (UVI) for Cairo 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 Cairo typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110108643
Data source: Cairo 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 Cairo Compares to Other Months

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

This table compares monthly weather conditions in Cairo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)26 mm (1.0 inches)73%moderate
February Weather-4°C (26°F)19 mm (0.7 inches)81%moderate
March Weather5°C (41°F)86 mm (3.4 inches)69%high
April Weather10°C (49°F)56 mm (2.2 inches)71%very high
May Weather16°C (61°F)145 mm (5.7 inches)80%very high
June Weather24°C (75°F)82 mm (3.2 inches)83%extreme
July Weather25°C (78°F)67 mm (2.6 inches)84%very high
August Weather23°C (74°F)76 mm (3.0 inches)84%very high
September Weather20°C (69°F)57 mm (2.3 inches)77%very high
October Weather11°C (52°F)87 mm (3.4 inches)72%high
November Weather5°C (40°F)21 mm (0.8 inches)80%moderate
December Weather-1°C (31°F)41 mm (1.6 inches)79%moderate

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