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September Weather in Barrio San Diego, Mexico

Last updated: August 27, 2025

In Barrio San Diego, Mexico, the average temperature in September hovers around 17°C (63°F). Expect a comfortable range, with minimums dropping to 10°C (50°F) and maximums soaring up to 27°C (81°F). However, be prepared for the wet weather, as precipitation amounts can reach 394 mm (15.5 in) over the course of 29 days, accompanied by an average humidity of 82%.

September Temperature in Barrio San Diego

In September in Barrio San Diego, the average temperature is 17°C (63°F). Maximums can reach 27°C (81°F) and minimums can be as low as 10°C (50°F). This mild climate makes Barrio San Diego an ideal destination for outdoor activities and exploration during this time of year.

September Weather in Barrio San Diego: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Barrio San Diego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barrio San Diego, September typically has an average temperature of 17°C (63°F), with highs reaching up to 27°C (81°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec586063646463636363626059
Data source: Temperature data for Barrio San Diego 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 Barrio San Diego

In Barrio San Diego in September, the precipitation amount is 394 mm (15.5 in) spread over 29 days, indicating a significant level of rainfall for that period.

September Precipitation Trends in Barrio San Diego

The chart displays monthly precipitation patterns in Barrio San Diego, 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 Barrio San Diego, September typically receives around 394 mm (15.5 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec1231946151337286361394187319
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Barrio San Diego

In Barrio San Diego in September, humidity is 82%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket wrapping around you—comfortable yet heavy, making outdoor activities more taxing and requiring frequent breaks for hydration.

September Average Humidity in Barrio San Diego

This chart illustrates the average monthly humidity levels in Barrio San Diego, 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 Barrio San Diego is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Barrio San Diego

In Barrio San Diego 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 Barrio San Diego, you can check here.

Maximum UV Index Levels in Barrio San Diego for September

The chart shows the monthly maximum UV Index (UVI) for Barrio San Diego 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 Barrio San Diego typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131515151515141413119
Data source: Barrio San Diego 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 Barrio San Diego Compares to Other Months

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

This table compares monthly weather conditions in Barrio San Diego, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (58°F)12 mm (0.5 inches)65%extreme
February Weather16°C (60°F)3 mm (0.1 inches)61%extreme
March Weather17°C (63°F)19 mm (0.7 inches)59%extreme
April Weather18°C (64°F)46 mm (1.8 inches)62%extreme
May Weather18°C (65°F)151 mm (6.0 inches)73%extreme
June Weather17°C (63°F)337 mm (13.3 inches)78%extreme
July Weather17°C (63°F)286 mm (11.3 inches)79%extreme
August Weather17°C (63°F)361 mm (14.2 inches)82%extreme
September Weather17°C (63°F)394 mm (15.5 inches)82%extreme
October Weather17°C (62°F)186 mm (7.3 inches)79%extreme
November Weather16°C (60°F)31 mm (1.2 inches)72%extreme
December Weather15°C (59°F)9 mm (0.4 inches)70%very high

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