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September Weather in Mayo, United States

Last updated: June 24, 2025

In September, the average temperature in Mayo, United States is a warm 27°C (80°F), perfect for enjoying the outdoors. Temperatures can range from a refreshing 16°C (61°F) to a scorching 38°C (100°F). Expect an average precipitation of 128 mm (5.0 in) spread over 14 days, and keep in mind the average humidity hovers around a humid 83%.

September Temperature in Mayo

In September in Mayo, the average temperature is 27°C (80°F). Maximums can reach 38°C (100°F) and minimums can be as low as 16°C (61°F). It's an ideal time for travelers to enjoy warm days while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Mayo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mayo, September typically has an average temperature of 27°C (80°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec556164697680818180756358
Data source: Temperature data for Mayo 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 Mayo

In Mayo in September, the precipitation amount is 128 mm (5.0 in) over a span of 14 days.

September Precipitation Trends in Mayo

The chart displays monthly precipitation patterns in Mayo, 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 Mayo, September typically receives around 128 mm (5.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec66734380901681891851286565119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Mayo

In Mayo in September, humidity is 83%. With an average temperature of 27°C (80°F), this humidity feels like a warm, steamy embrace, making traveling a bit uncomfortable as the air clings to your skin and renders even the slightest exertion more exhausting.

September Average Humidity in Mayo

This chart illustrates the average monthly humidity levels in Mayo, 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 Mayo is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%78%77%75%76%79%78%83%81%83%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Mayo

In Mayo 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 Mayo.

Maximum UV Index Levels in Mayo for September

The chart shows the monthly maximum UV Index (UVI) for Mayo 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 Mayo typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111121110965
Data source: Mayo 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 Mayo Compares to Other Months

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

This table compares monthly weather conditions in Mayo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (56°F)65 mm (2.6 inches)83%moderate
February Weather16°C (62°F)73 mm (2.9 inches)82%very high
March Weather18°C (64°F)43 mm (1.7 inches)78%very high
April Weather21°C (70°F)80 mm (3.2 inches)77%very high
May Weather25°C (76°F)90 mm (3.6 inches)75%extreme
June Weather27°C (80°F)168 mm (6.6 inches)76%extreme
July Weather27°C (81°F)189 mm (7.4 inches)79%extreme
August Weather27°C (82°F)185 mm (7.3 inches)78%extreme
September Weather27°C (80°F)128 mm (5.0 inches)83%very high
October Weather24°C (75°F)65 mm (2.6 inches)81%very high
November Weather17°C (63°F)65 mm (2.6 inches)83%high
December Weather14°C (58°F)119 mm (4.7 inches)86%moderate

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