Mexico City weather in September 2025

Expect daytime maximum temperatures of 23°C in Mexico City, Mexico in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 16 days with some rainfall and typically 109 mm of rainfall in the month.

  • 23°C maximum daytime temperature in September in Mexico City23
    23°C max day temperature
  • 4 hours of sunshine per day
  • 16 days with some rainfall in September in Mexico City16
    16 days with some rainfall
  • 11°C minimum night-time temperature in September in Mexico City11
    11°C min night temperature
  • 12 hours of daylight per day in September in Mexico City12
    12 hours of daylight per day
  • No heat & humidity in September in Mexico City0
    No heat & humidity
  • 109 mm monthly rainfall in September in Mexico City109
    109 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Mexico City11
    11+ (Extreme) UV index

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The September weather guide for Mexico (Mexico City) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Mexico

How hot is it in Mexico City in September?

Daytime temperatures usually reach 23°C in Mexico City in September, falling to 11°C at night.

How sunny is it in Mexico City in September?

There are normally 4 hours of bright sunshine each day in Mexico City in September - that's 35% of daylight hours.

Does it rain in Mexico City in September?

There are usually 16 days with some rain in Mexico City in September and the average monthly rainfall is 109mm.

What is the chance of a hurricane in Mexico City in September?

On average less than 1 day in September in Mexico City is likely to be affected by the passage of one or more tropical storms.

Mexico City September sunrise & sunset times

Browse the sunrise and sunset times for Mexico City in September 2025. Select a month to view Mexico City sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:21 18:51
Monday, 15th September 2025 06:24 18:39
Tuesday, 30th September 2025 06:27 18:25

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