Mazatlan weather in September 2025

Expect 90°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Mazatlan in September. Check more long-term weather averages for Mazatlan in September before you book your next holiday to Mexico in 2025/2026.

  • 90°F maximum daytime temperature in September in Mazatlan90
    90°F max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in September in Mazatlan12
    12 days with some rainfall
  • 77°F minimum night-time temperature in September in Mazatlan77
    77°F min night temperature
  • 12 hours of daylight per day in September in Mazatlan12
    12 hours of daylight per day
  • Very high heat & humidity in September in MazatlanVH
    Very High heat & humidity
  • 8.8 inches monthly rainfall in September in Mazatlan8.8
    8.8 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Mazatlan11
    11 (Extreme) UV index
  • 86°F sea temperature in September in Mazatlan86
    86°F sea temperature

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The September weather guide for Mexico (Mazatlan) 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)  |  Imperial (°F)

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How hot is it in Mazatlan in September?

Daytime temperatures usually reach 90°F in Mazatlan in September with very high heat and humidity, falling to 77°F at night.

How sunny is it in Mazatlan in September?

There are normally 7 hours of bright sunshine each day in Mazatlan in September - that's 55% of daylight hours.

How warm is the sea around Mazatlan in September?

The average sea temperature around Mazatlan in September is 86°F.

Does it rain in Mazatlan in September?

There are usually 12 days with some rain in Mazatlan in September and the average monthly rainfall is 8.8 inches.

What is the chance of a hurricane in Mazatlan in September?

On average 1.1 days in September in Mazatlan are likely to be affected by the passage of one or more tropical storms.

Mazatlan September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:48 18:23
Monday, 15th September 2025 05:52 18:09
Tuesday, 30th September 2025 05:57 17:54

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