The temperatures in Mazatlan during September are extremely high, between 27°C and hot as 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Mazatlan. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Mazatlan in September 2025.
If you’re planning to visit Mazatlan in the near future, we highly recommend that you review the 14 day weather forecast for Mazatlan before you arrive.
Temperatures
31° / 27°
Rainy Days
12
Snowy Days
0
Dry Days
18
Rainfall
279
mm
Sun Hours
11.4
Hrs
