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September Weather in Francisco Osorno, Mexico

Last updated: August 27, 2025

In September, the average temperature in Francisco Osorno, Mexico is a pleasant 24°C (76°F), making it an inviting destination. Expect temperatures to range from a cool 15°C (60°F) to a warm 34°C (93°F). However, be prepared for some rain, as the area sees about 330 mm (13.0 in) of precipitation over 24 days, and keep in mind the humidity is relatively high at 84%.

September Temperature in Francisco Osorno

In September in Francisco Osorno, the average temperature is 24°C (76°F). Maximum temperatures can reach 34°C (93°F), and minimums can drop as low as 15°C (60°F). This pleasant climate makes Francisco Osorno an ideal destination for travelers seeking both warmth and comfort.

September Weather in Francisco Osorno: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Francisco Osorno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Francisco Osorno, September typically has an average temperature of 24°C (76°F), with highs reaching up to 34°C (93°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec636569737777767776736864
Data source: Temperature data for Francisco Osorno 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 Francisco Osorno

In Francisco Osorno in September, the precipitation amount is 330 mm (13.0 in) accumulated over a span of 24 days.

September Precipitation Trends in Francisco Osorno

The chart displays monthly precipitation patterns in Francisco Osorno, 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 Francisco Osorno, September typically receives around 330 mm (13.0 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec11810815214019629025129733032916481
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Francisco Osorno

In Francisco Osorno in September humidity is 84%. With an average temperature of 24°C (76°F), this humidity feels like a warm, damp embrace that can make outdoor activities feel sticky and uncomfortable, requiring frequent breaks in the shade and plenty of hydration for travelers.

September Average Humidity in Francisco Osorno

This chart illustrates the average monthly humidity levels in Francisco Osorno, 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 Francisco Osorno is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Francisco Osorno

In Francisco Osorno in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Francisco Osorno.

Maximum UV Index Levels in Francisco Osorno for September

The chart shows the monthly maximum UV Index (UVI) for Francisco Osorno 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 Francisco Osorno typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810111213131312121197
Data source: Francisco Osorno 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 Francisco Osorno Compares to Other Months

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

This table compares monthly weather conditions in Francisco Osorno, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)118 mm (4.6 inches)88%very high
February Weather19°C (66°F)108 mm (4.3 inches)86%very high
March Weather20°C (69°F)152 mm (6.0 inches)83%extreme
April Weather23°C (74°F)140 mm (5.5 inches)80%extreme
May Weather25°C (77°F)196 mm (7.7 inches)82%extreme
June Weather25°C (77°F)290 mm (11.4 inches)79%extreme
July Weather25°C (77°F)251 mm (9.9 inches)72%extreme
August Weather25°C (77°F)297 mm (11.7 inches)74%extreme
September Weather24°C (76°F)330 mm (13.0 inches)84%extreme
October Weather23°C (73°F)329 mm (13.0 inches)92%extreme
November Weather20°C (68°F)164 mm (6.4 inches)91%very high
December Weather18°C (64°F)81 mm (3.2 inches)91%high

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