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September Weather in Trafalgar, United States

Last updated: June 24, 2025

In September, the average temperature in Trafalgar, United States is a pleasant 21°C (70°F). Expect a minimum chill of 6°C (43°F) and a potential high of 33°C (92°F). With 78 mm (3.1 in) of precipitation spread over 7 days, don't forget your umbrella! The air tends to be quite humid, with an average humidity level of 69%.

September Temperature in Trafalgar

In September in Trafalgar, the average temperature is 21°C (70°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 6°C (43°F). This weather makes Trafalgar an ideal destination for travelers seeking pleasant temperatures and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Trafalgar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trafalgar, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec313443536573777470584237
Data source: Temperature data for Trafalgar 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 Trafalgar

In Trafalgar in September, the total precipitation amount is 78 mm (3.1 in) over a duration of 7 days.

September Precipitation Trends in Trafalgar

The chart displays monthly precipitation patterns in Trafalgar, 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 Trafalgar, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec8598132104129117108101781009989
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trafalgar

In Trafalgar in September humidity is 69%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but requiring occasional breaks for hydration and shade during your travels.

September Average Humidity in Trafalgar

This chart illustrates the average monthly humidity levels in Trafalgar, 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 Trafalgar is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trafalgar

In Trafalgar 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 Trafalgar.

Maximum UV Index Levels in Trafalgar for September

The chart shows the monthly maximum UV Index (UVI) for Trafalgar 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 Trafalgar typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Trafalgar 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 Trafalgar Compares to Other Months

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

This table compares monthly weather conditions in Trafalgar, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)85 mm (3.4 inches)87%moderate
February Weather1°C (35°F)98 mm (3.8 inches)85%moderate
March Weather6°C (44°F)132 mm (5.2 inches)86%high
April Weather11°C (53°F)104 mm (4.1 inches)84%very high
May Weather18°C (65°F)129 mm (5.1 inches)79%very high
June Weather23°C (74°F)117 mm (4.6 inches)82%extreme
July Weather25°C (77°F)108 mm (4.2 inches)79%very high
August Weather23°C (74°F)101 mm (4.0 inches)70%very high
September Weather21°C (70°F)78 mm (3.1 inches)69%very high
October Weather14°C (58°F)100 mm (3.9 inches)76%high
November Weather6°C (42°F)99 mm (3.9 inches)88%moderate
December Weather3°C (37°F)89 mm (3.5 inches)87%moderate

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