nomadseason

September Weather in El Fresno, Mexico

Last updated: August 27, 2025

In September, the average temperature in El Fresno, Mexico is a pleasant 19°C (66°F). Expect a minimum of 9°C (48°F) and a maximum of 29°C (84°F), offering a nice range for outdoor activities. However, be prepared for some rain, as 104 mm (4.1 in) of precipitation typically falls over 17 days, with an average humidity of 86%.

September Temperature in El Fresno

In September in El Fresno, the average temperature is 19°C (66°F). Maximums can reach 29°C (84°F) and minimums can be as low as 9°C (48°F). Overall, this weather is ideal for exploring the outdoors and enjoying various activities while traveling.

September Weather in El Fresno: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Fresno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Fresno, September typically has an average temperature of 19°C (66°F), with highs reaching up to 29°C (84°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec545864687272697065645954
Data source: Temperature data for El Fresno generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in El Fresno

In El Fresno in September, the precipitation amount is 104 mm (4.1 in) over a span of 17 days.

September Precipitation Trends in El Fresno

The chart displays monthly precipitation patterns in El Fresno, 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 El Fresno, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec171291115521115110449139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in El Fresno

In El Fresno in September, humidity is 86%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket enveloping you, making travel slightly uncomfortable as the air feels heavy and sticking to your skin.

September Average Humidity in El Fresno

This chart illustrates the average monthly humidity levels in El Fresno, 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 El Fresno is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%64%49%47%55%77%82%83%86%83%80%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in El Fresno

In El Fresno in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in El Fresno, you can check here.

Maximum UV Index Levels in El Fresno for September

The chart shows the monthly maximum UV Index (UVI) for El Fresno 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 El Fresno typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131515141414141298
Data source: El Fresno 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 El Fresno Compares to Other Months

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

This table compares monthly weather conditions in El Fresno, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)17 mm (0.7 inches)71%very high
February Weather15°C (59°F)12 mm (0.5 inches)64%extreme
March Weather18°C (65°F)9 mm (0.4 inches)49%extreme
April Weather20°C (68°F)11 mm (0.4 inches)47%extreme
May Weather22°C (73°F)15 mm (0.6 inches)55%extreme
June Weather22°C (72°F)52 mm (2.0 inches)77%extreme
July Weather20°C (69°F)111 mm (4.4 inches)82%extreme
August Weather21°C (70°F)51 mm (2.0 inches)83%extreme
September Weather19°C (66°F)104 mm (4.1 inches)86%extreme
October Weather18°C (64°F)49 mm (1.9 inches)83%extreme
November Weather15°C (59°F)13 mm (0.5 inches)80%very high
December Weather12°C (54°F)9 mm (0.4 inches)83%very high

Compare El Fresno's Climate with Cities Worldwide